##### Table of Contents







UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549





FORM 20-F





Annual Report
Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

for the fiscal year ended December 31, 2010

Commission file number: 1-16269





AMÉRICA
MÓVIL, S.A.B. DE C.V.

(exact name of registrant as specified in its charter)





America Mobile

(translation of registrants name into English)

United Mexican
States

(jurisdiction of incorporation)

Lago Zurich 245, Plaza Carso / Edificio Telcel, Colonia Granada Ampliación, 11529, México, D.F., México

(address of principal executive offices)

Daniela Lecuona Torras,
Telephone: (5255) 2581-4449, E-mail: daniela.lecuona@americamovil.com,

Facsimile: (5255) 2581-4422, Lago
Zurich 245, Plaza Carso / Edificio Telcel, Piso 16, Colonia Granada Ampliación, 11529,

México, D.F.,
México

(name, telephone, e-mail and/or facsimile number and address of company contact person)

Securities registered pursuant to Section 12(b) of the Act:



|                                                                             |  |                                                    
|---------------------------------------------------------------------------- |  | ---------------------------------------------------
|Title of each class:                                                         |  | Name of each exchange on which registered:         
|American Depositary Shares, each representing 20 L Shares, without par value |  | New York Stock Exchange                            
|L Shares, without par value                                                  |  | New York Stock Exchange (for listing purposes only)
|American Depositary Shares, each representing 20 A Shares, without par value |  | NASDAQ National Market                             
|A Shares, without par value                                                  |  | NASDAQ National Market (for listing purposes only) 



Securities registered pursuant to Section 12(g) of the Act:None

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None

The number of outstanding shares of each of the registrants classes of capital or common stock as of December 31, 2010:



|               |  |          
|-------------- |  | ---------
|11,712 million |  | AA Shares
|393 million    |  | A Shares 
|28,068 million |  | L Shares 

Indicate by check mark if the
registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.x  Yes     ̈  No

If this report is an annual or transition report, indicate by check mark
if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of
1934. ̈  Yes    x  No

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days.xYes ̈No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule
405 of Regulation S-T (§ 232.405 of this Chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).N/A

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of
accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):



|                           |  |                      |  |                         
|-------------------------- |  | -------------------- |  | ------------------------
|Large accelerated
filer  x |  | Accelerated filer   ̈ |  | Non-accelerated filer   ̈

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:



|             |  |                                                                                                          |  |         
|------------ |  | -------------------------------------------------------------------------------------------------------- |  | --------
|U.S. GAAP   ̈ |  | International Financial Reporting Standards as issued by the International Accounting Standards Board  x |  | Other   ̈

If other has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to
follow.    Item 17 ̈Item 18 ̈N/A

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Exchange Act). ̈  Yes    x  No









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TABLE OF CONTENTS



|          |  |                                                                              |  |  |     | 
|--------- |  | ---------------------------------------------------------------------------- |  |  | --- | 
|Items 1-2 |  | Not Applicable                                                               |  |  | 1   | 
|Item 3.   |  | Key Information                                                              |  |  | 1   | 
|          |  | Selected Financial Data                                                      |  |  | 1   | 
|          |  | Exchange Rates                                                               |  |  | 3   | 
|          |  | Forward-Looking Statements                                                   |  |  | 4   | 
|          |  | Risk Factors                                                                 |  |  | 5   | 
|          |  |                                                                             
|Item 4.   |  | Information on the Company                                                   |  |  | 15  | 
|          |  |                                                                             
|Item 5.   |  | Operating and Financial Review and Prospects                                 |  |  | 59  | 
|          |  |                                                                             
|Item 6.   |  | Directors, Senior Management and Employees                                   |  |  | 78  | 
|          |  | Management                                                                   |  |  | 78  | 
|          |  | Employees                                                                    |  |  | 87  | 
|          |  |                                                                             
|Item 7.   |  | Major Shareholders and Related Party Transactions                            |  |  | 88  | 
|          |  | Major Shareholders                                                           |  |  | 88  | 
|          |  | Related Party Transactions                                                   |  |  | 90  | 
|          |  |                                                                             
|Item 8.   |  | Financial Information                                                        |  |  | 91  | 
|          |  | Dividends                                                                    |  |  | 91  | 
|          |  | Legal Proceedings                                                            |  |  | 92  | 
|          |  |                                                                             
|Item 9.   |  | The Offer and Listing                                                        |  |  | 93  | 
|          |  | Trading Markets                                                              |  |  | 93  | 
|          |  | Trading on the Mexican Stock Exchange                                        |  |  | 95  | 
|          |  |                                                                             
|Item 10.  |  | Additional Information                                                       |  |  | 95  | 
|          |  | Bylaws                                                                       |  |  | 95  | 
|          |  | Certain Contracts                                                            |  |  | 101 | 
|          |  | Exchange Controls                                                            |  |  | 102 | 
|          |  | Taxation                                                                     |  |  | 102 | 
|          |  | Documents on Display                                                         |  |  | 107 | 
|          |  |                                                                             
|Item 11.  |  | Quantitative and Qualitative Disclosures about Market Risk                   |  |  | 107 | 
|          |  |                                                                             
|Item 12.  |  | Description of Securities Other than Equity Securities                       |  |  | 107 | 
|          |  |                                                                             
|Item 12D. |  | American Depositary Shares                                                   |  |  | 107 | 
|          |  |                                                                             
|Item 13.  |  | Defaults, Dividend Arrearages and Delinquencies                              |  |  | 107 | 
|          |  |                                                                             
|Item 14.  |  | Material Modifications to the Rights of Security Holders and Use of Proceeds |  |  | 108 | 
|          |  |                                                                             
|Item 15.  |  | Controls and Procedures                                                      |  |  | 108 | 
|          |  |                                                                             
|Item 16A. |  | Audit Committee Financial Expert                                             |  |  | 110 | 
|          |  |                                                                             
|Item 16B. |  | Code of Ethics                                                               |  |  | 110 | 
|          |  |                                                                             
|Item 16C. |  | Principal Accountant Fees and Services                                       |  |  | 110 | 
|          |  |                                                                             
|Item 16D. |  | Exemptions from the Listing Standards for Audit Committees                   |  |  | 111 | 
|          |  |                                                                             
|Item 16E. |  | Purchases of Equity Securities by the Issuer and Affiliated Purchasers       |  |  | 111 | 
|          |  |                                                                             
|Item 16F. |  | Change in Registrants Certifying Accountant                                 |  |  | 112 | 
|          |  |                                                                             
|Item 16G. |  | Corporate Governance                                                         |  |  | 112 | 
|          |  |                                                                             
|Item 17.  |  | Not Applicable                                                               |  |  | 116 | 
|          |  |                                                                             
|Item 18.  |  | Financial Statements                                                         |  |  | 116 | 
|          |  |                                                                             
|Item 19.  |  | Exhibits                                                                     |  |  | 117 | 



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PART I



|Items 1-2. | Not Applicable.
|---------- | ---------------



|Item 3. | Key Information
|------- | ---------------

SELECTED FINANCIAL DATA

We prepared our consolidated financial statements included in this annual report in
accordance with International Financial Reporting Standards (IFRS) as issued by the International Accounting Standards Board (IASB). Our date of transition to IFRS was January 1, 2009. These consolidated annual financial
statements are our first financial statements prepared in accordance with IFRS. IFRS 1First-time Adoption of International Financial Reporting Standards has been applied in preparing these financial statements. Note 1(II)(b) to our
audited consolidated financial statements contains an analysis of the valuation, presentation and disclosure effects of adopting IFRS and a reconciliation between Mexican Financial Reporting Standards (Normas de Información Financiera
Mexicanas, or Mexican FRS) and IFRS as of January 1 and December 31, 2009 and for the year ended December 31, 2009.

We present our financial statements in Mexican pesos. This annual report contains translations of various peso amounts into U.S. dollars at specified rates solely for your convenience. You should
not construe these translations as representations by us that the nominal peso or constant peso amounts actually represent the U.S. dollar amounts or could be converted into U.S. dollars at the rate indicated. Unless otherwise indicated, we have
translated U.S. dollar amounts from constant pesos at the exchange rate of Ps. 12.3817 to U.S.$1.00, which was the rate reported by Banco de México for December 31, 2010, as published in the Official Gazette of the Federation
(Diario Oficial de la Federación, or Official Gazette).

The selected financial
information set forth below has been derived in part from our audited consolidated financial statements, which have been reported on by Mancera S.C., a member practice of Ernst & Young Global, an independent registered public accounting
firm. The selected financial information should be read in conjunction with, and is qualified in its entirety by reference to, our audited consolidated financial statements. The selected financial information for 2009 differs from the information we
previously published for 2009, because it is presented in accordance with IFRS and because the May 2010 acquisition of a controlling interest in Carso Global Telecom, S.A.B. de C.V. (CGT) is accounted for as a transaction between
entities under common control and accordingly given effect for all dates and periods presented.



|                                |  |                                 |            |  |                              |  |            |      |  |       |        | 
|------------------------------- |  | ------------------------------- | ---------- |  | ---------------------------- |  | ---------- | ---- |  | ----- | ------ | 
|                                |  | For the year ended December 31, |           
|                                |  | 2009                            |            |  | 2010                         |  |            | 2010 | 
|                                |  | (in millions of pesos)(1)       |            |  | (millions ofU.S. dollars)(1) | 
|Income Statement Data:          |  |                                 |            |  |                              |  |            |      |  |       |        | 
|IFRS                            |  |                                 |            |  |                              |  |            |      |  |       |        | 
|Operating revenues              |  |                                 | Ps.561,254 |  |                              |  | Ps.607,856 |      |  | U.S.$ | 49,191 | 
|Operating costs and expenses    |  |                                 | 412,443    |  |                              |  | 455,534    |      |  |       | 36,864 | 
|Depreciation and amortization   |  |                                 | 79,904     |  |                              |  | 91,071     |      |  |       | 7,370  | 
|Operating income                |  |                                 | 148,811    |  |                              |  | 152,321    |      |  |       | 12,327 | 
|Net income                      |  |                                 | 106,901    |  |                              |  | 98,905     |      |  |       | 8,004  | 
|Distribution of the net income: |  |                                 |            |  |                              |  |            |      |  |       |        | 
|Majority interest               |  |                                 | 92,968     |  |                              |  | 91,123     |      |  |       | 7,374  | 
|Non-controlling interest        |  |                                 | 14,203     |  |                              |  | 7,782      |      |  |       | 630    | 
|                                |  |                                 |            |  |                              |  |            |      |  |       |        | 
|Net income                      |  |                                 | 106,901    |  |                              |  | 98,905     |      |  |       | 8,004  | 
|                                |  |                                 |            |  |                              |  |            |      |  |       |        | 



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|                                                          |  |                                 |            |  |                              |  |            |      |  |       |        | 
|--------------------------------------------------------- |  | ------------------------------- | ---------- |  | ---------------------------- |  | ---------- | ---- |  | ----- | ------ | 
|                                                          |  | For the year ended December 31, |           
|                                                          |  | 2009                            |            |  | 2010                         |  |            | 2010 | 
|                                                          |  | (in millions of pesos)(1)       |            |  | (millions ofU.S. dollars)(1) | 
|Earnings per share:                                       |  |                                 |            |  |                              |  |            |      |  |       |        | 
|Basic(2)                                                  |  |                                 | 2.38       |  |                              |  | 2.31       |      |  |       | 0.18   | 
|Diluted(2)                                                |  |                                 | 2.38       |  |                              |  | 2.31       |      |  |       | 0.18   | 
|Dividends declared per share(3)                           |  |                                 | 0.80       |  |                              |  | 0.32       |      |  |       | 0.03   | 
|Dividends paid per share(4)                               |  |                                 | 0.80       |  |                              |  | 0.32       |      |  |       | 0.03   | 
|Weighted average number of shares outstanding (millions): |  |                                 |            |  |                              |  |            |      |  |       |        | 
|Basic                                                     |  |                                 | 38,965     |  |                              |  | 39,510     |      |  |       |        | 
|Diluted                                                   |  |                                 | 38,965     |  |                              |  | 39,510     |      |  |       |        | 
|                                                          | 
|                                                          |  | As of December 31,              |           
|                                                          |  | 2009                            |            |  | 2010                         |  |            | 2010 | 
|                                                          |  | (in millions of pesos)(1)       |            |  | (millions ofU.S. dollars)(1) | 
|Balance Sheet Data:                                       |  |                                 |            |  |                              |  |            |      |  |       |        | 
|IFRS                                                      |  |                                 |            |  |                              |  |            |      |  |       |        | 
|Property, plant and equipment, net                        |  |                                 | Ps.418,733 |  |                              |  | Ps.411,820 |      |  | U.S.$ | 33,327 | 
|Total assets                                              |  |                                 | 807,334    |  |                              |  | 876,695    |      |  |       | 70,948 | 
|Short-term debt and current portion of long-term debt     |  |                                 | 44,967     |  |                              |  | 9,039      |      |  |       | 731    | 
|Long-term debt                                            |  |                                 | 232,274    |  |                              |  | 294,060    |      |  |       | 23,797 | 
|Total equity(5)                                           |  |                                 | 313,798    |  |                              |  | 336,037    |      |  |       | 27,194 | 
|Capital stock                                             |  |                                 | 30,116     |  |                              |  | 96,433     |      |  |       | 7,804  | 
|Number of outstanding shares (millions):                  |  |                                 |            |  |                              |  |            |      |  |       |        | 
|AA Shares                                                 |  |                                 | 11,712     |  |                              |  | 11,712     |      |  |       |        | 
|A Shares                                                  |  |                                 | 451        |  |                              |  | 393        |      |  |       |        | 
|L Shares                                                  |  |                                 | 20,121     |  |                              |  | 28,068     |      |  |       |        | 
|Ratio of Earnings to Fixed Charges:                       |  |                                 |            |  |                              |  |            |      |  |       |        | 
|IFRS(6)                                                   |  |                                 | 9.2        |  |                              |  | 7.6        |      |  |       |        | 



|(1) | Except per share and share capital.
|--- | -----------------------------------

|(2) | We have not included earnings or dividends on a per ADS basis. Each L Share ADS represents 20 L Shares and each A Share ADS represents 20 A Shares.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Figures provided represent the annual dividend declared at the general shareholders meeting and for 2009 include a special dividend of Ps. 0.50 per share.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | For more information on dividends paid per share translated into U.S. dollars, see Financial InformationDividends under Item 8. Amount in U.S.
dollars translated at the exchange rate on each of the respective payment dates.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | Includes non-controlling interest.
|--- | ----------------------------------

|(6) | Earnings, for this purpose, consist of profit before income tax, plus interest expense and interest implicit in operating leases, minus equity interest in net income of
affiliates, during the period.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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EXCHANGE RATES

Mexico has a free market for foreign exchange, and the Mexican government allows the peso to float freely against the U.S. dollar. There
can be no assurance that the Mexican government will maintain its current policies with regard to the peso or that the peso will not depreciate or appreciate significantly in the future.

The following table sets forth, for the periods indicated, the high, low, average and period-end noon buying rate in New York City for
cable transfers in pesos published by the Federal Reserve Bank of New York, expressed in pesos per U.S. dollar. The rates have not been restated in constant currency units and therefore represent nominal historical figures.



|         |  |      |         |  |     |  |         |            |  |  |            |  |  |  |         | 
|-------- |  | ---- | ------- |  | --- |  | ------- | ---------- |  |  | ---------- |  |  |  | ------- | 
|Period   |  | High |         |  | Low |  |         | Average(1) |  |  | Period End | 
|2006     |  |      | 11.4600 |  |     |  | 10.4315 |            |  |  | 10.9023    |  |  |  | 10.7995 | 
|2007     |  |      | 11.2692 |  |     |  | 10.6670 |            |  |  | 10.9253    |  |  |  | 10.9169 | 
|2008     |  |      | 13.9350 |  |     |  | 9.9166  |            |  |  | 11.2124    |  |  |  | 13.8320 | 
|2009     |  |      | 15.4060 |  |     |  | 12.6318 |            |  |  | 13.5777    |  |  |  | 13.0576 | 
|2010     |  |      | 13.1940 |  |     |  | 12.1556 |            |  |  | 12.6352    |  |  |  | 12.3825 | 
|November |  |      | 12.5668 |  |     |  | 12.2121 |            |  |  |            |  |  |  |         | 
|December |  |      | 12.4725 |  |     |  | 12.3311 |            |  |  |            |  |  |  |         | 
|2011     |  |      |         |  |     |  |         |            |  |  |            |  |  |  |         | 
|January  |  |      | 12.2545 |  |     |  | 12.0390 |            |  |  |            |  |  |  |         | 
|February |  |      | 12.1824 |  |     |  | 11.9700 |            |  |  |            |  |  |  |         | 
|March    |  |      | 12.1114 |  |     |  | 11.9170 |            |  |  |            |  |  |  |         | 
|April    |  |      | 11.8552 |  |     |  | 11.5237 |            |  |  |            |  |  |  |         | 



|(1) | Average of month-end rates.
|--- | ---------------------------

On
May 6, 2011, the noon buying rate was Ps. 11.5831 to U.S.$1.00.

We will pay any cash dividends in pesos, and exchange
rate fluctuations will affect the U.S. dollar amounts received by holders of American Depositary Shares (ADSs) on conversion by the depositary of cash dividends on the shares represented by such ADSs. Fluctuations in the exchange rate
between the peso and the U.S. dollar affect the U.S. dollar equivalent of the peso price of our shares on the Mexican Stock Exchange (Bolsa Mexicana de Valores, S.A.B. de C.V., or the Mexican Stock Exchange) and, as a result, can
also affect the market price of the ADSs.



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FORWARD-LOOKING STATEMENTS

This annual report contains forward-looking statements. We may from time to time make forward-looking statements in our periodic reports
to the U.S. Securities and Exchange Commission (the SEC), on Forms 20-F and 6-K, in our annual report to shareholders, in offering circulars and prospectuses, in press releases and other written materials, and in oral statements made by
our officers, directors or employees to analysts, institutional investors, representatives of the media and others. Examples of such forward-looking statements include:



| |  |  | projections of operating revenues, net income (loss), net income (loss) per share, capital expenditures, indebtedness levels, dividends, capital
structure or other financial items or ratios;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | statements of our plans, objectives or goals, including those relating to acquisitions, competition, regulation and rates;
| | - |  | --------------------------------------------------------------------------------------------------------------------------



| |  |  | statements about our future economic performance or that of Mexico or other countries in which we currently operate;
| | - |  | --------------------------------------------------------------------------------------------------------------------



| |  |  | competitive developments in the telecommunications sector in each of the markets where we currently operate or into which we may expand;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | other factors and trends affecting the telecommunications industry generally and our financial condition in particular; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------



| |  |  | statements of assumptions underlying the foregoing statements.
| | - |  | --------------------------------------------------------------

We use words such as believe, anticipate, plan, expect, intend,
target, estimate, project, predict, forecast, guideline, should and other similar expressions to identify forward-looking statements, but they are not the only way
we identify such statements.

Forward-looking statements involve inherent risks and uncertainties. We caution you that a
number of important factors could cause actual results to differ materially from the plans, objectives, expectations, estimates and intentions expressed in such forward-looking statements. These factors, some of which are discussed under Risk
Factors, include economic and political conditions and government policies in Mexico, Brazil or elsewhere, inflation rates, exchange rates, regulatory developments, technological improvements, customer demand and competition. We caution you
that the foregoing list of factors is not exclusive and that other risks and uncertainties may cause actual results to differ materially from those in forward-looking statements.

Forward-looking statements speak only as of the date they are made. We undertake no obligation to publicly update or revise any
forward-looking statements, whether as a result of new information or future events or for any other reason.

You should
evaluate any statements made by us in light of these important factors.



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##### Table of Contents

RISK FACTORS

Risks Relating to Our Businesses

Competition in the telecommunications industry is intense and could adversely affect the revenues and profitability of our businesses

Our businesses face substantial competition from other wireless providers, fixed-line telephone companies and, increasingly, other
telecommunications providers such as cable, paging, trunking and Internet companies.

Competition in our markets has
intensified in recent periods, and we expect that it will continue to intensify in the future as a result of the entry of new competitors, the development of new technologies, products and services, and the auction of additional spectrum. We also
expect the current consolidation trend in the wireless industry to continue, as companies respond to the need for cost reduction and additional spectrum. This trend may result in larger competitors with greater financial, technical, promotional and
other resources to compete with our businesses. Telefónica, S.A. (Telefónica), which has important operations in Mexico and Brazil, as well as other of our markets, is our largest regional competitor through several
acquisitions.

Among other things, our competitors could:



| |  |  | provide increased handset subsidies;
| | - |  | ------------------------------------



| |  |  | offer higher commissions to retailers;
| | - |  | --------------------------------------



| |  |  | provide free airtime or other services (such as Internet access);
| | - |  | -----------------------------------------------------------------



| |  |  | expand their networks faster; or
| | - |  | --------------------------------



| |  |  | develop and deploy improved technologies faster.
| | - |  | ------------------------------------------------

Competition can lead us to increase advertising and promotional spending and to reduce prices for services and handsets. These developments may lead to smaller operating margins, greater choices for
customers, possible consumer confusion and increasing movement of customers among competitors, which may make it difficult for us to retain customers or add new customers. The cost of adding new customers may also continue to increase, reducing
profitability even if customer growth continues.

Our ability to compete successfully will depend on our coverage, the quality
of our network and service, our rates, customer service, marketing and our ability to anticipate and respond to various competitive factors affecting the telecommunications industry, including new services and technologies, changes in consumer
preferences, demographic trends, economic conditions and discount pricing strategies by competitors. If we are unable to respond to competition and compensate for declining prices by adding new customers, increasing usage and offering new services,
our revenues and profitability could decline.

Changes in government regulation could hurt our businesses

Our businesses are subject to extensive government regulation and can be adversely affected by changes in law,
regulation or regulatory policy. The licensing, construction, operation, sale, resale and interconnection arrangements of telecommunications systems in Latin America and elsewhere are regulated to varying degrees by government or regulatory
authorities. Any of these authorities having jurisdiction over our businesses could adopt or change regulations or take other actions that could adversely affect our operations. In particular, the regulation of prices that operators may charge for
their services could have a material adverse effect on us by reducing our profit margins.



5



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##### Table of Contents

These risks are significant in all of the markets in which we operate. See
Regulation under Item 4, Legal Proceedings under Item 8 and Note 17 to our audited consolidated financial statements included in this annual report. The risks in our largest markets, for example, include the
following.



| |  |  | In Mexico, the businesses of Radiomóvil Dipsa, S.A. de C.V. (Telcel) and Teléfonos de México, S.A.B. de C.V.
(Telmex) are subject to extensive government regulation, principally by the Mexican Ministry of Communications and Transportation (Secretaría de Comunicaciones y Transportes, or SCT), the Federal
Telecommunications Commission (Comisión Federal de Telecomunicaciones, or Cofetel), the Federal Antitrust Commission (Comisión Federal de Competencia, or Cofeco) and the Federal Consumer Bureau
(Procuraduría Federal del Consumidor, or Profeco), and may be adversely affected by changes in law or by actions of Mexican regulatory authorities. In Mexico, we face government regulation and are the subject of
investigations, including with respect to the mobile termination fees payable by local and long-distance operators to mobile operators and investigations into market power and monopolistic practices in the telecommunications sector. We may also face
additional regulatory restrictions and scrutiny other than those we have been subject to thus far as a result of our provision of combined services, including triple play services, following the acquisitions of CGT and Telmex Internacional, S.A.B.
de C.V. (Telmex Internacional). Findings adverse to us in any regulatory proceedings may lead to the imposition of additional regulations, prohibitions or monetary penalties, which in turn could have an adverse effect on its business and
results of operations. In April 2011, Cofeco notified Telcel of a resolution imposing a fine of Ps. 11,989 million for alleged monopolistic practices. We and Telcel are evaluating the scope and legal grounds of the resolution and will exercise
any and all legal actions or remedies to challenge it.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | In Brazil, our businesses are regulated principally by the Brazilian National Telecommunications Agency (Agência Nacional de
Telecomunicações, or Anatel) and may be adversely affected by its actions or changes in its regulations. In Brazil, we also face government regulation and are the subject of investigations, including with respect to the
interconnection fees charged by operators belonging to an economic group with significant market power and provisions in the concessions granted to Empresa Brasileira de Telecomunicações S.A. (Embratel), which limit its
ability to set tariffs for its services. We may also face additional regulatory restrictions and scrutiny other than those we have been subject to thus far as a result of our provision of combined services, including triple play services, following
the acquisitions of CGT and Telmex Internacional. If these issues are resolved against us, the consequences for our business could be material.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | In Colombia, the Colombian Ministry of Information and Communications (Ministerio de Tecnologías de la Información y las
Comunicaciones, or Ministry of Communications) and the Colombian Communications Regulation Commission (Comisión de Regulación de Comunicaciones, or CRC) are responsible for regulating and overseeing
the telecommunications sector, including cellular operations. In September 2009, the CRC issued a series of resolutions stating that Comunicación Celular, S.A. (Comcel), our Colombian subsidiary, has a dominant position in
Colombias market for outgoing mobile services. Under Colombian law, a market participant is considered to have a dominant position in a specified market if there is a substantial difference between that market participants traffic,
revenues and subscriber base and its competitors traffic, revenues and subscriber base. The resolutions also included regulations that would require Comcel to charge rates (excluding access fees) for mobile-to-mobile calls outside the Comcel
network (off net) that are no higher than the fees charged for mobile-to-mobile calls within the Comcel network (on net) plus access fees. The regulations, which limit Comcels flexibility in offering pricing plans to
its customers, were first implemented on December 4, 2009. As of the date of this annual report, the CRC is evaluating whether to broaden or suspend the regulations. If the regulations are broadened, they could have an adverse impact on our
operations, but we cannot predict the effects on Comcels financial performance.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In addition, changes
in political administrations could lead to the adoption of policies concerning competition and taxation of communications services that may be detrimental to our operations throughout



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Latin America and the Caribbean. These restrictions, which may take the form of preferences for local over foreign ownership of communications licenses and assets, or for government over private
ownership, may make it impossible for us to continue to develop our businesses. These restrictions could result in our incurring losses of revenues and require capital investments, all of which could materially adversely affect our businesses and
results of operations.

Dominant carrier regulations could hurt our business by limiting our ability to pursue
competitive and profitable strategies

Our regulators are authorized to impose specific requirements as to rates
(including mobile termination rates), service quality and information on operators that are determined to have substantial market power in a specific market. For example, in Mexico, Cofeco has issued resolutions concluding that Telcel has
substantial market power in the national mobile telephone services relevant market. Under the Antitrust Law (Ley Federal de Competencia Económica) and the Telecommunications Law (Ley Federal de Telecomunicaciones), if Cofeco
makes a final finding of substantial market power concerning an operator, Cofetel can impose on that operator specific regulations with respect to tariffs, quality of service and information in the specific market in which that operator was found to
have substantial market power. We cannot predict what regulatory steps Cofetel might take in response to determinations by Cofeco. In addition, Cofeco is conducting investigations into whether Telcel or Telmex have engaged in monopolistic practices.
Adverse determinations against Telcel or Telmex in any of the ongoing investigations could also result in material fines, penalties or restrictions on our Mexican operations.

We may face additional regulatory restrictions and scrutiny than those we have been subject to thus far as a result of our provision of combined services, including triple play services, following the
acquisitions of CGT and Telmex Internacional.

We believe that if dominant carrier regulations are imposed on our business in
the future, they will likely reduce our flexibility to adopt competitive market policies and impose specific tariff requirements or other special regulations on us, such as additional requirements regarding disclosure of information or quality of
service. Any such new regulation could have a material adverse effect on our operations.

We will, in the future, have
to acquire additional radio spectrum capacity in order to expand our customer base and maintain the quality of our services

Licensed radio spectrum is essential to our growth and the quality of our services, particularly for global system for mobile communications (GSM) and universal mobile telecommunications
systems (UMTS) services and increased deployment of third generation (3G) networks to offer value-added services. Our inability to acquire additional radio spectrum capacity could affect our ability to compete successfully
because it could result in, among other things, a decrease in the quality of our network and service and in our ability to meet the needs of our customers.

Participation in spectrum auctions in most of our markets requires prior governmental authorization. In 2005, for example, we bid and won the auction for an additional 10 MHz of capacity in three
principal regions in Mexico, but were subsequently prohibited from acquiring this additional spectrum based on restrictions imposed by Cofeco.

In the event we are unable to acquire additional radio spectrum capacity, we can increase the density of our network by building more cell and switch sites, but such measures are costly and would be
subject to local restrictions and approvals, and they will not fully meet our needs.

Our concessions and licenses are
for fixed terms, and conditions may be imposed on their renewal

Our concessions and licenses have specified terms,
ranging typically from 10 to 30 years, and are generally subject to renewal upon payment of a fee, but renewal is not assured. The loss of, or failure to renew, any one



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concession could have a material adverse effect on our business and results of operations. Our ability to renew concessions and the terms of renewal are subject to a number of factors beyond our
control, including the prevalent regulatory and political environment at the time of renewal. Fees are typically established at the time of renewal. As a condition for renewal, we may be required to agree to new and stricter terms and service
requirements. If our concessions are not renewed, we are required to transfer the assets covered by the concession to the government, generally at fair market value, although certain jurisdictions provide for other valuation methodologies.

In addition, the regulatory regimes and laws of the jurisdictions in which we operate permit the government to revoke our
concessions under certain circumstances. In Mexico, for example, the Mexican Telecommunications Law gives the government the right to expropriate our concessions or to take over the management of our networks, facilities and personnel in cases of
imminent danger to national security, internal peace or the national economy, natural disasters and public unrest.

We
continue to look for acquisition opportunities, and any future acquisitions and related financings could have a material effect on our business, results of operations and financial condition

We continue to look for other investment opportunities in telecommunications companies worldwide, including in markets where we are
already present, and we often have several possible acquisitions under consideration. Any future acquisitions and related financings could have a material effect on our business, results of operations and financial condition, but we cannot give any
assurances that we will complete any of them. In addition, we may incur significant costs and expenses as we integrate these companies in our systems, controls and networks.

We are subject to significant litigation

Some of our subsidiaries
are subject to significant litigation, which if determined adversely to our interests may have a material adverse effect on our business, results of operations, financial condition or prospects. In Mexico, for example, there are pending
administrative investigations and legal proceedings concerning whether Telcel or Telmex have substantial market power and whether they have engaged in monopolistic practices, and there are legal proceedings regarding rates for mobile termination
with other operators. In Brazil, there are pending regulatory proceedings regarding the calculation of inflation-related adjustments due under our concessions with Anatel, and Embratel is involved in various legal proceedings, including several tax
disputes with the Brazilian tax authorities alleging underpayments by Embratel and social security administrative and civil lawsuits for aggregate claims that are substantial. In Colombia, there are administrative proceedings against Comcel
regarding alleged anti-competitive behavior. Our significant litigation is described in Legal Proceedings under Item 8 and in Note 17 to our audited consolidated financial statements included in this annual report.

A system failure could cause delays or interruptions of service, which could cause us to lose customers and revenues

We will need to continue to provide our subscribers with reliable service over our network. Some of the risks to our
network and infrastructure include the following:



| |  |  | physical damage to access lines;
| | - |  | --------------------------------



| |  |  | power surges or outages;
| | - |  | ------------------------



| |  |  | limitations on the use of our radiobases;
| | - |  | -----------------------------------------



| |  |  | software defects;
| | - |  | -----------------



| |  |  | natural disasters; and
| | - |  | ----------------------



| |  |  | disruptions beyond our control.
| | - |  | -------------------------------



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Disruptions may cause interruptions in service or reduced capacity for customers, either of
which could cause us to lose subscribers and incur additional expenses.

If our churn rate increases, our business could
be negatively affected

The cost of acquiring a new subscriber is much higher than the cost of maintaining an existing
subscriber. Accordingly, subscriber deactivations, or churn, could have a material negative impact on our operating income, even if we are able to obtain one new subscriber for each lost subscriber. A substantial majority of our
subscribers are prepaid, and we do not have long-term contracts with those subscribers. Our weighted monthly average churn rate on a consolidated basis was 3.0% for the year ended December 31, 2009 and 3.2% for the year ended December 31,
2010. If we experience an increase in our churn rate, our ability to achieve revenue growth could be materially impaired. In addition, a decline in general economic conditions could lead to an increase in churn, particularly among our prepaid
subscribers.

We depend on key suppliers and vendors to provide equipment that we need to operate our business

We depend upon various key suppliers and vendors, including Apple, Nokia, Research in Motion, Sony-Ericsson, Motorola,
LG, Samsung, Cisco, Nokia-Siemens, Huawei, Alcatel-Lucent and Hispamar to provide us with handsets, network equipment or services, which we need to expand and operate our business. If these suppliers or vendors fail to provide equipment or service
to us on a timely basis, we could experience disruptions, which could have an adverse effect on our revenues and results of operations. In addition, we might be unable to satisfy the requirements contained on our concessions.

Our ability to pay dividends and repay debt depends on our subsidiaries ability to transfer income and dividends to us

We are a holding company with no significant assets other than the shares of our subsidiaries and our holdings of cash
and cash equivalents. Our ability to pay dividends and repay debt depends on the continued transfer to us of dividends and other income from our subsidiaries. The ability of our subsidiaries to pay dividends and make other transfers to us may be
limited by various regulatory, contractual and legal constraints that affect our subsidiaries.

We may fail to realize
the business growth opportunities, revenue benefits, cost savings and other benefits anticipated from, or may incur unanticipated costs associated with, acquisitions we make from time to time, our results of operations and financial condition may
suffer

The business growth opportunities, revenue benefits, cost savings and other benefits we anticipated to result
from our acquisitions may not be achieved as expected, or at all, or may be delayed. For example, we expect the acquisition of CGT and Telmex Internacional to produce benefits from combining our operations with those of Telmex Internacional.
However, these benefits may not be realized and other assumptions upon which the consideration paid for the acquisition of CGT and Telmex Internacional was determined may prove to be incorrect. Similar considerations apply to other acquisitions,
including our 2011 agreement to acquire Digicels operations in Honduras and El Salvador. For example, we may be unable to fully implement our business plans and strategies for the combined businesses due to regulatory limitations and we may
face regulatory restrictions in our provision of combined services in some of the countries in which we operate. To the extent that we incur higher integration costs or achieve lower revenue benefits or fewer cost savings than expected, our results
of operations and financial condition may suffer.



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Risks Relating to the Telecommunications Industry Generally

Changes in the telecommunications industry could affect our future financial performance

The telecommunications industry continues to experience significant changes as new technologies are developed that offer subscribers an
array of choices for their communications needs. These changes include, among others, regulatory changes, evolving industry standards, ongoing improvements in the capacity and quality of digital technology, shorter development cycles for new
products, and changes in end-user needs and preferences. In Mexico and in the other countries in which we conduct business, there is uncertainty as to the pace and extent of growth in subscriber demand, and as to the extent to which prices for
airtime and line rental may continue to decline. If we are unable to meet future advances in competing technologies on a timely basis or at an acceptable cost, we could lose subscribers to our competitors. In general, the development of new services
in our industry requires us to anticipate and respond to the varied and continually changing demands of our subscribers. We may not be able to accurately predict technological trends or the success of new services in the market. In addition, there
could be legal or regulatory restraints to our introduction of new services. If these services fail to gain acceptance in the marketplace, or if costs associated with implementation and completion of the introduction of these services materially
increase, our ability to retain and attract subscribers could be adversely affected.

In the wireless industry in particular
there are four existing digital technologies, none of which is compatible with the others except for long term evolution (LTE), which is compatible with GSM. In the past, Telcel and certain of our international businesses used time
division multiple access (TDMA) technology for their digital networks, while certain of our other international businesses used code division multiple access (CDMA) as their digital wireless technology. We introduced GSM
technology in all of our markets (excluding the United States). Also, Telcel and some of our international businesses launched new networks using the UMTS and high-speed downlink packet access protocol (HSDPA) 3G technology between 2007
and 2010. We expect to complete the deployment of the 3G technology in the following years.

However, if the technologies that
gain widespread acceptance in the future are not compatible with the technologies we use, we may be required to make capital expenditures in excess of our current forecasts in order to upgrade and replace our technology and infrastructure.

The intellectual property rights utilized by us, our suppliers or service providers may infringe on intellectual
property rights owned by others

Some of our products and services use intellectual property that we own or license
from others. We also provide content services we receive from content distributors, such as ring tones, text games, video games, wallpapers or screensavers, and outsource services to service providers, including billing and customer care functions,
that incorporate or utilize intellectual property. We and some of our suppliers, content distributors and service providers have received, and may receive in the future, assertions and claims from third parties that the products or software utilized
by us or our suppliers, content distributors and service providers infringe on the patents or other intellectual property rights of these third parties. These claims could require us or an infringing supplier, content distributor or service provider
to cease engaging in certain activities, including selling, offering and providing the relevant products and services. Such claims and assertions also could subject us to costly litigation and significant liabilities for damages or royalty payments,
or require us to cease certain activities or to cease selling certain products and services.

Concerns about health
risks relating to the use of wireless handsets and base stations may adversely affect our business

Portable
communications devices have been alleged to pose health risks, including cancer, due to radio frequency emissions from these devices. Lawsuits have been filed in the United States against certain participants in the wireless industry alleging
various adverse health consequences as a result of wireless phone usage, and our



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businesses may be subject to similar litigation in the future. Research and studies are ongoing, and there can be no assurance that further research and studies will not demonstrate a link
between radio frequency emissions and health concerns. Any negative findings in these studies could adversely affect the use of wireless handsets and, as a result, our future financial performance.

Developments in the telecommunications sector have resulted, and may in the future result, in substantial write-downs of the
carrying value of certain of our assets

We review on an annual basis, or more frequently where the circumstances
require, the value of each of our assets and subsidiaries, to assess whether those carrying values can be supported by the future cash flows expected to be derived from such assets. Whenever we consider that due to changes in the economic,
regulatory, business or political environment, our goodwill, intangible assets or fixed assets may be impaired, we consider the necessity of performing certain valuation tests, which may result in impairment charges. The recognition of impairments
of tangible, intangible and financial assets could adversely affect our results of operations.

We are exposed to
special risks in connection with our international call services

Revenues from international service in part reflect
payments under bilateral agreements between us and foreign carriers, which are influenced by the international tariff and trade regulations and cover virtually all international calls to and from the countries in which we operate. Various factors,
including unauthorized international traffic (commonly known as bypass), increases in the proportion of outgoing to incoming calls and the levels of settlement prices could affect the amount of net settlement payments from U.S. or other
international carriers to us in future years.

Risks Relating to Our Controlling Shareholders, Capital Structure and Transactions with
Affiliates

Members of one family may be deemed to control us

According to reports of beneficial ownership of our shares filed with the SEC, Carlos Slim Helú, together with his sons and
daughters (together, the Slim Family), including his two sons who are co-chairs of our board of directors, Patrick Slim Domit and Carlos Slim Domit, may be deemed to control us. The Slim Family may be able to elect a majority of the
members of our board of directors and to determine the outcome of other actions requiring a vote of our shareholders, except in very limited cases that require a vote of the holders of L Shares. We cannot assure you that the Slim Family will not
take actions that are inconsistent with your interests.

We have significant transactions with affiliates

We engage in transactions with certain subsidiaries of Grupo Carso, S.A.B. de C.V. and Grupo Financiero Inbursa,
S.A.B. de C.V., which are affiliates of América Móvil, and of our shareholder AT&T, Inc. Many of these transactions occur in the ordinary course of business. Transactions with affiliates may create the potential for conflicts of
interest.

We also make investments together with affiliated companies, sell our investments to related parties and buy
investments from related parties. For more information about our transactions with affiliates see Related Party Transactions under Item 7.

Our bylaws restrict transfers of shares in some circumstances

Our
bylaws provide that any acquisition or transfer of more than 10% of our capital stock by any person or group of persons acting together requires the approval of our Board of Directors. If you acquire or transfer more than 10% of our capital stock,
you will not be able to do so without the approval of our Board of Directors.



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The protections afforded to minority shareholders in Mexico are different from those
in the United States

Under Mexican law, the protections afforded to minority shareholders are different from those in
the United States. In particular, the law concerning fiduciary duties of directors is not as fully developed as in other jurisdictions, there is no procedure for class actions, and there are different procedural requirements for bringing
shareholder lawsuits. As a result, in practice it may be more difficult for minority shareholders of América Móvil to enforce their rights against us or our directors or controlling shareholder than it would be for shareholders of a
company incorporated in another jurisdiction, such as the United States.

Holders of L Shares and L Share ADSs
have limited voting rights

Our bylaws provide that holders of L Shares are not permitted to vote except on such
limited matters as, among others, the transformation or merger of América Móvil or the cancellation of registration of the L Shares with the National Securities Registry (Registro Nacional de Valores, or RNV)
maintained by CNBV or any stock exchange on which they are listed. If you hold L Shares or L Share ADSs, you will not be able to vote on most matters, including the declaration of dividends that are subject to a shareholder vote in
accordance with our bylaws.

Holders of ADSs are not entitled to attend shareholders meetings, and they may only
vote through the depositary

Under our bylaws, a shareholder is required to deposit its shares with a custodian in
order to attend a shareholders meeting. A holder of ADSs will not be able to meet this requirement, and accordingly is not entitled to attend shareholders meetings. A holder of ADSs is entitled to instruct the depositary as to how to
vote the shares represented by ADSs, in accordance with procedures provided for in the deposit agreements, but a holder of ADSs will not be able to vote its shares directly at a shareholders meeting or to appoint a proxy to do so.

Mexican law and our bylaws restrict the ability of non-Mexican shareholders to invoke the protection of their governments with
respect to their rights as shareholders

As required by Mexican law, our bylaws provide that non-Mexican shareholders
shall be considered as Mexicans in respect of their ownership interests in América Móvil and shall be deemed to have agreed not to invoke the protection of their governments in certain circumstances. Under this provision, a non-Mexican
shareholder is deemed to have agreed not to invoke the protection of his own government by asking such government to interpose a diplomatic claim against the Mexican government with respect to the shareholders rights as a shareholder, but is
not deemed to have waived any other rights it may have, including any rights under the U.S. securities laws, with respect to its investment in América Móvil. If you invoke such governmental protection in violation of this provision,
your shares could be forfeited to the Mexican government.

Our bylaws may only be enforced in Mexico

Our bylaws provide that legal actions relating to the execution, interpretation or performance of the bylaws may be brought only in
Mexican courts. As a result, it may be difficult for non-Mexican shareholders to enforce their shareholder rights pursuant to the bylaws.

It may be difficult to enforce civil liabilities against us or our directors, officers and controlling persons

América Móvil is a sociedad anónima bursátil de capital variable organized under the laws of Mexico, with its principal place of business (domicilio social) in
Mexico City, and most of our directors, officers and controlling persons reside outside the United States. In addition, all or a substantial portion of our assets and their assets are located outside of the United States. As a result, it may be
difficult for investors to effect service of



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process within the United States on such persons or to enforce judgments against them, including in any action based on civil liabilities under the U.S. federal securities laws. There is doubt as
to the enforceability against such persons in Mexico, whether in original actions or in actions to enforce judgments of U.S. courts, of liabilities based solely on the U.S. federal securities laws.

You may not be entitled to participate in future preemptive rights offerings

Under Mexican law, if we issue new shares for cash as part of certain capital increases, we must grant our shareholders the right to
purchase a sufficient number of shares to maintain their existing ownership percentage in América Móvil. Rights to purchase shares in these circumstances are known as preemptive rights. Our shareholders do not have preemptive rights in
certain circumstances such as mergers, convertible debentures, public offers and placement of repurchased shares. We may not legally be permitted to allow holders of ADSs or holders of L Shares or A Shares in the United States to exercise
any preemptive rights in any future capital increase unless we file a registration statement with the SEC, with respect to that future issuance of shares. At the time of any future capital increase, we will evaluate the costs and potential
liabilities associated with filing a registration statement with the SEC and any other factors that we consider important to determine whether we will file such a registration statement.

We cannot assure you that we will file a registration statement with the SEC to allow holders of ADSs or U.S. holders of L Shares or
A Shares to participate in a preemptive rights offering. As a result, the equity interest of such holders in América Móvil may be diluted proportionately. In addition, under current Mexican law, it is not practicable for the
depositary to sell preemptive rights and distribute the proceeds from such sales to ADS holders.

Risks Relating to Developments in Mexico
and Other Countries

Latin American and Caribbean economic, political and social conditions may adversely affect our
business

Our financial performance may be significantly affected by general economic, political and social conditions
in the markets where we operate, particularly in Mexico, Brazil, Colombia and Central America. Many countries in Latin America and the Caribbean, including Mexico, Brazil and Argentina have suffered significant economic, political and social crises
in the past, and these events may occur again in the future. We cannot predict whether changes in political administrations will result in changes in governmental policy and whether such changes will affect our business. Factors related to economic,
political and social conditions that could affect our performance include:



| |  |  | significant governmental influence over local economies;
| | - |  | --------------------------------------------------------



| |  |  | substantial fluctuations in economic growth;
| | - |  | --------------------------------------------



| |  |  | high levels of inflation;
| | - |  | -------------------------



| |  |  | changes in currency values;
| | - |  | ---------------------------



| |  |  | exchange controls or restrictions on expatriation of earnings;
| | - |  | --------------------------------------------------------------



| |  |  | high domestic interest rates;
| | - |  | -----------------------------



| |  |  | wage and price controls;
| | - |  | ------------------------



| |  |  | changes in governmental economic or tax policies;
| | - |  | -------------------------------------------------



| |  |  | imposition of trade barriers;
| | - |  | -----------------------------



| |  |  | unexpected changes in regulation; and
| | - |  | -------------------------------------



| |  |  | overall political, social and economic instability.
| | - |  | ---------------------------------------------------



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Adverse economic, political and social conditions in Latin America may inhibit demand for
telecommunication services and create uncertainty regarding our operating environment, which could have a material adverse effect on our company.

Our business may be especially affected by conditions in Mexico and Brazil, our two principal markets. Mexico experienced a period of slow growth in 2009, primarily as a result of the downturn in the U.S.
economy. According to preliminary data, during 2010, Mexicos gross domestic product (GDP) increased by an estimated 5.5%, compared to a decrease of 6.1% in 2009. The annual rate of inflation, as measured by changes in the National
Consumer Price Index published by Banco de México, was 4.4% for 2010 and 3.6% in 2009.

According to preliminary data,
during 2010, Brazils GDP increased by an estimated 7.5% in 2010, compared to a decrease of 0.6% in 2009. The annual rate of inflation, as measured by changes in the Brazilian National Consumer Price Index, was 5.9% for 2010 and 4.3% in 2009.

Our business may be affected by political developments in Latin America and the Caribbean. We cannot predict whether these
recent events will affect our business or our ability to renew our licenses and concessions, to maintain or increase our market share or profitability or will have an impact on future strategic acquisition efforts.

Depreciation or fluctuation of the currencies in which we conduct operations relative to the U.S. dollar could adversely affect our
financial condition and results of operations

We are affected by fluctuations in the value of the currencies in which
we conduct operations compared to the U.S. dollar, in which a substantial portion of our indebtedness is denominated. Changes in the value of the various currencies in which we conduct operations against the Mexican peso, which we use as our
reporting currency in our financial statements, and against the U.S. dollar may result in exchange losses or gains on our net U.S. dollar-denominated indebtedness and accounts payable. In 2009, changes in currency exchange rates led us to report net
foreign exchange gains of Ps. 13,419 million. In 2010, we reported net foreign exchange gains of Ps. 5,581 million. In addition, currency fluctuations between the Mexican peso and the currencies of our non-Mexican subsidiaries affect our
results as reported in Mexican pesos. Currency fluctuations are expected to continue to affect our financial income and expense.

Major devaluation or depreciation of any such currencies may also result in disruption of the international foreign exchange markets and may limit our ability to transfer or to convert such currencies
into U.S. dollars and other currencies for the purpose of making timely payments of interest and principal on our indebtedness. For example, although the Mexican government does not currently restrict, and for many years has not restricted, the
right or ability of Mexican or foreign persons or entities to convert pesos into U.S. dollars or to transfer other currencies out of Mexico, it could, however, institute restrictive exchange rate policies in the future. Similarly, the Brazilian
government may impose temporary restrictions on the conversion of Brazilian reais into foreign currencies and on the remittance to foreign investors of proceeds from investments in Brazil whenever there is a serious imbalance in Brazils
balance of payments or a reason to foresee a serious imbalance.



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|Item 4. | Information on the Company
|------- | --------------------------

GENERAL

We provide telecommunications services in 18 countries. We are the largest provider of wireless communications services in Latin America,
based on the number of subscribers, with the largest market share in Mexico and the third-largest in Brazil. We also have major fixed-line operations in Mexico, Brazil and twelve other countries. The table below provides a summary of the principal
businesses we conduct and the principal brand names we use in each country where we operate.



|                   |  |                 |  |                              
|------------------ |  | --------------- |  | -----------------------------
|Country            |  | PrincipalBrands |  | PrincipalBusinesses          
|Mexico             |  | Telcel          |  | Wireless                     
|                   |  | Telmex          |  | Fixed line                   
|Argentina          |  | Claro           |  | Wireless, fixed line         
|Brazil             |  | Claro           |  | Wireless                     
|                   |  | Embratel        |  | Fixed line, satellite, Pay TV
|                   |  | Net             |  | Pay TV                       
|Chile              |  | Claro           |  | Wireless, fixed line, Pay TV 
|Colombia           |  | Comcel          |  | Wireless                     
|                   |  | Telmex          |  | Fixed line, Pay TV           
|Dominican Republic |  | Claro           |  | Wireless, fixed line, Pay TV 
|Ecuador            |  | Claro           |  | Wireless, fixed line, Pay TV 
|El Salvador        |  | Claro           |  | Wireless, fixed line, Pay TV 
|Guatemala          |  | Claro           |  | Wireless, fixed line, Pay TV 
|Honduras           |  | Claro           |  | Wireless, fixed line, Pay TV 
|Jamaica            |  | Claro           |  | Wireless                     
|Nicaragua          |  | Claro           |  | Wireless, fixed line, Pay TV 
|Panama             |  | Claro           |  | Wireless, Pay TV             
|Paraguay           |  | Claro           |  | Wireless                     
|Peru               |  | Claro           |  | Wireless, fixed line, Pay TV 
|Puerto Rico        |  | Claro           |  | Wireless, fixed line, Pay TV 
|Uruguay            |  | Claro           |  | Wireless, fixed line         
|United States      |  | Tracfone        |  | Wireless                     

We intend to
build on our position as the leader in integrated telecommunications services in Latin America and the Caribbean by continuing to expand our subscriber base, both by developing our existing businesses and by making strategic acquisitions when
opportunities arise. We are offering our customers new services and new packages that integrate multiple services, and we continue investing in our networks to optimize coverage and implement new technologies. We strongly believe in profitably
creating value for our customers. Consistent with this objective, our corporate strategy is based on the three pillars of growth, integration and optimization, which we intend to solidify through:



| |  |  | proximity to our clients and ability to take advantage of opportunities to penetrate new markets with a greater variety of telecommunications products
and services with more and enhanced features;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | continuing to deliver on growth in revenues and profits, controlling costs through operational integration among our subsidiaries, reducing churn and
replicating best practices throughout the region; and
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | offering convergence services, ensuring quality to our clients and optimizing customer care with the best service.
| | - |  | ------------------------------------------------------------------------------------------------------------------



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The following table sets forth, for the dates indicated, the number of our wireless
subscribers and our revenue generating units (RGUs), which include fixed lines, broadband accesses and cable or direct-to-home (DTH) Pay TV units, in the countries where we operate. It includes total subscribers and RGUs of
all consolidated subsidiaries and affiliates, without adjusting where our equity interest is less than 100%. The table reflects the geographic segments we use in our consolidated financial statements, and in particular: (a) Southern Cone refers
to Argentina, Chile, Paraguay and Uruguay; (b) Andean Region refers to Ecuador and Peru; (c) Central America refers to El Salvador, Guatemala, Honduras and Nicaragua; and (d) Caribbean refers to Dominican Republic, Jamaica and
Puerto Rico.



|                           |  |                |         |  |      |  |         | 
|-------------------------- |  | -------------- | ------- |  | ---- |  | ------- | 
|                           |  | December 31,   |        
|                           |  | 2009           |         |  | 2010 | 
|                           |  | (in thousands) |        
|Wireless subscribers:      |  |                |         |  |      |  |         | 
|Mexico                     |  |                | 59,167  |  |      |  | 64,138  | 
|Brazil                     |  |                | 44,401  |  |      |  | 51,638  | 
|Southern Cone              |  |                | 21,833  |  |      |  | 24,508  | 
|Colombia and Panama        |  |                | 27,797  |  |      |  | 29,413  | 
|Andean Region              |  |                | 17,760  |  |      |  | 20,310  | 
|Central America            |  |                | 9,535   |  |      |  | 10,775  | 
|United States              |  |                | 14,427  |  |      |  | 17,749  | 
|Caribbean                  |  |                | 6,043   |  |      |  | 6,494   | 
|                           |  |                |         |  |      |  |         | 
|Total wireless subscribers |  |                | 200,963 |  |      |  | 225,024 | 
|                           |  |                |         |  |      |  |         | 
|                           |  |               
|RGUs:                      |  |                |         |  |      |  |         | 
|Mexico                     |  |                | 22,406  |  |      |  | 22,951  | 
|Brazil                     |  |                | 14,514  |  |      |  | 18,588  | 
|Southern Cone(1)           |  |                | 834     |  |      |  | 1,067   | 
|Colombia and Panama        |  |                | 2,753   |  |      |  | 2,988   | 
|Andean Region              |  |                | 338     |  |      |  | 544     | 
|Central America            |  |                | 2,929   |  |      |  | 3,231   | 
|Caribbean                  |  |                | 2,019   |  |      |  | 2,144   | 
|                           |  |                |         |  |      |  |         | 
|Total RGUs                 |  |                | 45,794  |  |      |  | 51,511  | 
|                           |  |                |         |  |      |  |         | 



|(1) | Argentina, Chile and Uruguay only. We do not have fixed line operations in Paraguay.
|--- | ------------------------------------------------------------------------------------

Our principal operations are:



| |  |  | Mexico Wireless.Our subsidiary Radiomóvil Dipsa, S.A. de C.V., which operates under the name Telcel, is the
largest provider of wireless service in Mexico, based on the number of subscribers.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Mexico Fixed.    Our subsidiary Telmex is the only nationwide provider of fixed-line telephony services in Mexico.
| | - |  | ------------------------------------------------------------------------------------------------------------------



| |  |  | Brazil.Several of our subsidiaries operating under the unified brand name Claro together constitute one of the three
largest providers of wireless telecommunications services in Brazil, based on the number of subscribers. Our subsidiary Embratel Participações S.A. (Embrapar), together with its subsidiaries, is one of the leading providers
of telecommunications services in Brazil, and our affiliate Net Serviços de Comunicação, S.A. (Net Serviços) is the largest cable television operator in Brazil. Together they offer triple-play services in
Brazil, with a cable television network that passes 11.7 million homes.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Southern Cone.    We provide wireless services in Argentina, Paraguay, Uruguay and Chile, operating under the Claro brand.
We also provide fixed-line services in Argentina, Chile and Uruguay under the Claro brand. In Chile, we offer nationwide Pay TV services under the Claro brand.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | Colombia and Panama.We provide wireless services under the Comcel brand in Colombia, where we are the largest wireless
provider. We also provide fixed-line telecommunications and Pay TV services in Colombia under the Telmex brand, where our network passes 5.5 million homes. We also provide wireless telecommunications and Pay TV services in Panama under the
Claro brand.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Andean Region.We provide wireless services in Peru and Ecuador under the Claro brand. We also provide fixed-line
telecommunications and Pay TV services in Peru, where our network passes 668 thousand homes, and Ecuador, where our network passes 406 thousand homes.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Central America.We provide fixed-line, wireless and Pay TV services in Guatemala, El Salvador, Honduras and Nicaragua.
Our Central American subsidiaries provide all services under the Claro brand.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | United States.Our subsidiary TracFone Wireless Inc. (TracFone) is engaged in the sale and distribution of
prepaid wireless services and wireless phones throughout the United States, Puerto Rico and the U.S. Virgin Islands.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Caribbean.We provide fixed-line, wireless and Pay TV services in the Dominican Republic and Puerto Rico, where we are
the largest telecommunications services providers. In addition, we provide wireless services in Jamaica. Our Caribbean subsidiaries provide all services under the Claro brand.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

All the companies that conduct our operations are fully consolidated and wholly owned, with these exceptions:



| |  |  | Telmex.    Our subsidiary CGT directly and indirectly, owns 59.89% of the total equity of Telmex, which conducts fixed-line
telecommunications business in Mexico. We own 99.96% of the total equity of CGT. Telmex is fully consolidated in our financial statements. Telmex is listed on the Mexican Stock Exchange, the New York Stock Exchange (NYSE), NASDAQ and the
Mercado de Valores Latinoamericanos en Euros (Latibex).
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Net Serviços.    Our Brazilian subsidiaries own a total of 91.9% of the total equity of Net Serviços, which
provides Pay TV services in Brazil. However, we do not control a majority of the voting equity. We account for Net Serviços on the equity method. Net Serviços is listed on the Brazilian stock exchange BM&FBOVESPA and on NASDAQ.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Other minority interest.    For some of our other operating subsidiaries, we own less than 100% of the equity, but in each
case we own more than 95% and the subsidiaries are fully consolidated. A detailed list of our subsidiaries and affiliates is provided in Exhibit 8.1 to this annual report; see also Note 2(b)(i) to our consolidated financial statements.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

América Móvil, S.A.B. de C.V. is a sociedad anónima bursátil de capital
variable organized under the laws of Mexico with its principal executive offices at Lago Zurich 245, Plaza Carso / Edificio Telcel, Colonia Granada Ampliación, Delegación Miguel Hidalgo, 11529, México D.F., México.
Our telephone number at this location is (5255) 2581-4449.

History

We were established in September 2000 in a spin-off from Telmex, a leading provider of telecommunications services in Mexico. The spin-off
was implemented using a procedure under the Mexican General Corporations Law (Ley General de Sociedades Mercantiles) called escisión.

In 1999, we began acquiring our international subsidiaries and investing in our Brazilian operations and our other international affiliates. We made significant acquisitions in Latin America and the
Caribbean during the past 12 years, including the acquisitions of Telmex Internacional and CGT, which owns a controlling interest in Telmex.



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We continue to look for other investment opportunities in telecommunication companies
worldwide, including in markets where we are already present, and we often have several possible acquisitions under consideration.

Recent
Developments

Acquisitions of CGT and Telmex Internacional

In June 2010, we completed two separate but concurrent offers to acquire outstanding shares of Telmex Internacional and CGT. Giving effect
to the acquisition of additional shares of each in subsequent offer periods, we currently own 99.96% of the outstanding shares of CGT and 97.13% of the outstanding shares of Telmex Internacional. The total consideration we paid upon closing the
offers was approximately 8,438 million of our Series L Shares (including Series L Shares represented by ADSs) and approximately Ps. 26,784 million in cash.

Embratel Tender Offer for Preferred Shares of Net Serviços

On October 13, 2010, our subsidiary, Embratel, purchased 143,853,436 preferred shares, no par value, of Net Serviços. A
sufficient number of preferred shares were tendered into the offer to give rise to a shareholder put right at the offer price adjusted for inflation through settlement of the put. The period for exercising the shareholder put right expired on
January 13, 2011. A total of 49,847,863 preferred shares, equivalent to 21.81% of outstanding preferred shares as of October 13, 2010, were tendered during the shareholder put right period, bringing the final number of preferred shares
tendered into the offer to 193,701,299. The total purchase price of all preferred shares acquired pursuant to the tender offer was approximately R$4.4 billion Brazilian reais (U.S.$2.6 billion based on the exchange rate as of January 13, 2011
of R$1.6701 per U.S.$1.00), paid in cash. As a result of the offer, our ownership of preferred shares through the combined holdings of Embratel and its parent, Embrapar, increased to 210,838,097 preferred shares, equivalent to 92.3% of the
outstanding preferred shares. Accordingly, our indirect ownership in Net Serviços total capital stock increased to 91.9%.

License to Operate in Costa Rica

In a public auction in January
2011, we obtained a license to operate in Costa Rica for a total purchase price of approximately U.S.$75 million. We were granted the use of 70 MHz of spectrum in the 1.8 MHz and 2.1 MHz bands for a period of 15 years. We expect to begin operations
in Costa Rica later in 2011.

Acquisition of Digicel Operations in Honduras and El Salvador and Divestiture of Our
Operations in Jamaica

In March 2011, we entered into an agreement with Digicel Group Limited and its affiliates
(Digicel) to acquire 100% of Digicels operations in Honduras and El Salvador. As part of this transaction, we are selling our operations in Jamaica to Digicel. The completion of the transaction is subject to governmental and
regulatory approvals in Honduras, El Salvador and Jamaica, among other conditions, and is expected to occur during the second quarter of 2011.

Acquisition of 20% Interest in Star One

In April 2011, we entered
into a stock purchase agreement with GE Satellite Holdings LLC and its affiliates to acquire a 20% interest in Star One S.A. (Star One). Star One is a Brazilian company that provides satellite services in Brazil. Our subsidiary Embratel
currently owns the remaining 80% interest in Star One. The transaction is subject to regulatory approvals in Brazil, and is expected to close during the third quarter of 2011.



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MEXICO WIRELESS OPERATIONS

We offer wireless services and products in Mexico through our subsidiary Telcel and Telcels subsidiaries and affiliates in Mexico.
Telcel is the leading provider of wireless communications services in Mexico. We also offer yellow pages directory services in Mexico through Anuncios en Directorios, S.A. de C.V.

As of December 31, 2010, we had approximately 64.1 million cellular subscribers, approximately 90.1% of which were prepaid
customers, which represented a market share of 70.5%.

In 2010, our Mexico Wireless segment had revenues of Ps.
146,095 million, representing 26.0% of our consolidated revenues for such period. As of December 31, 2010, our Mexico Wireless operations represented approximately 28.5% of our total wireless subscribers, as compared to 29.4% at
December 31, 2009.

The following table sets forth information regarding our Mexico Wireless segments subscriber
base, market share and operating measures at the dates and for the periods indicated.



|                                 |  |              |             |   |      |  |             |  
|-------------------------------- |  | ------------ | ----------- | - | ---- |  | ----------- | -
|                                 |  | December 31, |            
|                                 |  | 2009         |             |   | 2010 | 
|ARPU (year ended)                |  |              | Ps.     162 |   |      |  | Ps.     165 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |  
|Prepaid                          |  |              | 53,938      |   |      |  | 57,778      |  
|Postpaid                         |  |              | 5,229       |   |      |  | 6,359       |  
|                                 |  |              |             |   |      |  |             |  
|Total                            |  |              | 59,167      |   |      |  | 64,138      |  
|                                 |  |              |             |   |      |  |             |  
|Market share                     |  |              | 71.2        | % |      |  | 70.5        | %
|MOUs (year ended)                |  |              | 194         |   |      |  | 210         |  
|Wireless churn rate (year ended) |  |              | 3.2         | % |      |  | 3.2         | %

Services and Products

Voice Services and Products

Telcel offers wireless voice and data services under a variety of plans to meet the needs of different user segments. The plans are either postpaid, where the customer is billed monthly for
the previous month and may terminate the plan at any time, subject to certain exceptions, or prepaid, where the customer pays in advance for a specified volume of use over a specified period. Although prepaid customers typically generate
lower levels of usage and are often unwilling to make a fixed financial commitment or do not have the credit profile to purchase postpaid plans, we believe the prepaid market represents a large and growing under-penetrated market in Mexico because,
compared to the average postpaid plan, prepaid plans involve higher average per minute airtime charges, lower customer acquisition costs and billing expenses, and low credit or payment risk.

Rates for postpaid plans have not increased since April 1999 and rates for prepaid plans have not increased since 2002. Rates for both
types of plans are expected to remain stable as long as the Mexican economic environment remains stable. In addition, in recent periods Telcel has offered certain discounts and promotions that reduce the effective rates that its postpaid and prepaid
customers pay.

Telcel offers international roaming services to its subscribers through the networks of cellular service
providers with which Telcel has entered into international roaming agreements around the world. In Mexico, Telcel also provides GSM and 3G roaming services to customers of Telcels international roaming partners.

In connection with the provision of its voice services, Telcel earns mobile termination revenues from calls to any of its subscribers
that originate with another service provider. Telcel charges the service provider from whose network the call originates a mobile termination charge for the time Telcels network is used in connection with the call. Similarly, Telcel must pay
mobile termination fees in respect of calls made by its



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subscribers to customers of other service providers. There has been extensive controversy, and legal and administrative proceedings, concerning the terms of interconnection in Mexico. See
RegulationMexican Regulatory ProceedingsMobile Termination Rates under this Item 4 and Note 17 to our audited consolidated financial statements included in this annual report.

Data Services

Telcel offers data services, including Short Message Services (SMS), Multimedia Messaging Service (MMS), Premium SMS and Premium MMS, Mobile Entertainment Services, Data
Transmission, Internet Browsing and E-mail Services.

Handsets and Accessories

Telcel offers a variety of products as complements to its wireless service, including handsets and smart phones and accessories such as
chargers, headsets, belt clips, batteries, broadband cards and netbooks.

Other Services and Products

In addition, Telcel offers other wireless services, such as Push-to-Talk Services, Oficina Móvil Telcel, a
services suite designed to provide companies productivity-enhancing applications, mobile banking, Ideas TVIdeas Radio, which permit customers to access TV and radio content and videoconferencing.

Marketing

Telcel
develops customer and brand awareness through its marketing and promotion efforts and high-quality customer care. Telcel builds upon the strength of its well-recognized brand name to increase consumer awareness and customer loyalty, employing
continuous advertising efforts through print, radio, television, sponsorship of sports events and other outdoor advertising campaigns. Telcel also has a loyalty rewards program, Círculo Azul, that offers postpaid customers
points that can be redeemed for handsets and other goods or services provided by third parties. In 2010, our marketing efforts were mainly focused on communicating that we have one of the best 3G networks in the world and showing the advantages such
network has through value-added services.

Sales and Distribution

Telcel markets its wireless services and products primarily through exclusive distributors located throughout Mexico, who sell
Telcels services and products, including handsets, postpaid plans and prepaid cards, through approximately 40,794 points of sale and receive commissions. In addition, Telcels company-owned retail stores offer one-stop shopping for a
variety of wireless services and products. Walk-in customers can subscribe for postpaid plans, purchase prepaid cards and purchase handsets and accessories. As of December 31, 2010, Telcel owned and operated 266 customer sales and service
centers throughout Mexico and will continue to open new sales and service centers as necessary in order to offer its products directly to subscribers in more effective ways. In addition, Telcel has a dedicated corporate sales group to service the
needs of its large corporate and other high-usage customers. In the year ended December 31, 2010, approximately 77% of Telcels sales of handsets were generated by cellular distributors, 20% from sales in company-owned stores and 3% from
direct sales to corporate accounts.

Billing and Collection

Telcel bills its postpaid customers through monthly invoices, which detail itemized charges. Customers may pay their bills through pre-authorized debit or credit charges, in person at banks, Telcels
and other designated retail stores, and electronically through the Internet websites of Telcel and of banks.



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If a postpaid customers payment is overdue, service may be suspended temporarily until
full payment for all outstanding charges is received. If the subscribers payment is more than 60 days past due, service may be discontinued permanently. Accounts that are more than 90 days past due are considered doubtful accounts.

A prepaid customer who purchases airtime credit has between 7 to 60 days, depending on the amount purchased, to use the airtime. After 30
or 60 days, the customer can no longer use that airtime for outgoing calls unless the customer purchases additional airtime credit. After 180 days, unless the customer has purchased additional airtime credit, the service is discontinued and the
balance, if any, is recognized as revenue.

Customer Service

Telcel places a high priority on providing its customers with quality customer care and support, with approximately 59% of Telcels employees dedicated to customer service. Customers may call a
toll-free telephone number, go to one of the customer sales and service centers located throughout Mexico or access Telcels website to answer any inquiries.

Our Networks and Technology

Telcels wireless networks, which cover
approximately 93% of the population, use digital technologies both in the 850 MHz frequency spectrum and in the 1900 MHz frequency spectrum. As of December 31, 2010, Telcel has networks using:



| |  |  | TDMA technology in the 850 MHz frequency spectrum.
| | - |  | --------------------------------------------------



| |  |  | GSM technology in the 1900 and 850 MHz frequency spectrums;
| | - |  | -----------------------------------------------------------



| |  |  | Enhanced data rates for GSM evolution (EDGE) technologies in the 850 MHz frequency spectrum; and
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | UMTS/HSDPA 3G technologies in the 850 MHz frequency spectrum.
| | - |  | -------------------------------------------------------------

TDMA network

Telcel has a nationwide TDMA network that permits the use of advanced dual-band handsets that allow for roaming across analog and digital systems using the 850 MHz spectrum. This network is currently used
by subscribers who have not yet migrated to a newer network, especially in rural areas. Telcels TDMA subscriber base represented approximately 1.9% of Telcels total subscribers.

GSM/EDGE network

Currently, Telcels GSM network offers service in all nine regions in Mexico, having built and installed a GSM network in the 1900 MHz frequency spectrum in those regions. In addition, Telcel has
continued with the expansion of its GSM network by using the 850 and 1900 MHz spectrum since 2006. As of December 31, 2010, Telcels GSM subscriber base represented approximately 85.5% of Telcels total subscribers.

In addition, Telcel upgraded the GSM network with EDGE technology in 2005. It has implemented EDGE technology in all localities with GSM
coverage (approximately 179,000 localities), including all the major cities and roads in Mexico.

3G network

Telcel, which began offering 3G services in February 2008, is deploying a UMTS 3G network in Mexico using the existing
850 MHz spectrum using HSDPA, a mobile telephony communications protocol that allows networks based on UMTS to have higher data transfer speeds and capacity.



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Telcel is the first operator to deploy UMTS/HSDPA technologies in Mexico. As of
December 31, 2010, Telcels UMTS/HSDPA network covered approximately 112,000 localities, including all of Mexicos principal cities. Telcel plans to continue expanding its 3G coverage in Mexico throughout 2011 for urban as well as
rural areas. As of December 31, 2010, Telcels UMTS/HSDPA subscriber base represented approximately 12.6% of Telcels total subscribers.

4G network

In 2010, Telcel obtained additional spectrum in the
1.7/2.1 GHz Band (usually known as AWSAdvanced Wireless Services) for each of the nine regions (three of them with 30 MHz and six with 20 MHz), for which it paid Ps. 3.8 billion. The planned use for this spectrum is to deploy a 4th Generation
network based on the international standard LTE.

Competition

Telcel faces competition from other wireless providers using the 850 MHz spectrum and from providers with Personal Communications Service (PCS) licenses that provide wireless service on the
1900 MHz spectrum. Telcels principal competitors in Mexico are Iusacell and Telefónica. Telcel also competes with Nextel in certain regions.

The effects of competition on Telcel depend, in part, on the business strategies of its competitors, on regulatory developments, and on the general economic and business climate in Mexico, including
demand growth, interest rates, inflation and exchange rates. The effects could include loss of market share and pressure to reduce rates. Telcel believes that its strategies to meet competition will continue to help limit its loss of market share
and that any loss of market share will be partly offset by increasing demand.

Directory Services and Products

Print Directories

We offer two types of printed yellow pages directories: a complete yellow pages book and a community directory. We also publish and distribute white pages directories. Basic listing in our yellow pages
directories is provided at no charge and includes the name, address and telephone number of the business according to its classification. In addition, we sell paid advertising space on an annual basis in our yellow pages directories and offer
various advertising options to our clients.

Internet Directory

We provide electronic directory services through the Sección Amarilla website on the Internet, which can be accessed at
www.seccionamarilla.com or www.paginastelmex.com. The webpages provide access to the information published in the print yellow pages directories by geographic location, classification or business name. Maps accompany search results showing where a
business is located. We also sell advertising on the website.

We are the main provider of yellow pages directories in Mexico,
where we compete with other types of media, including television broadcasting, newspaper, radio, direct mail, search engines and other Internet yellow pages.



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MEXICO FIXED OPERATIONS

We offer fixed-line services and products in Mexico through our subsidiary Telmex and its subsidiaries and affiliates in Mexico. Telmex
is the leading provider of fixed-line voice and broadband services in Mexico. As of December 31, 2010, we had approximately 15.6 million fixed line voice subscribers and 7.4 million broadband subscribers in Mexico.

In 2010, our Mexico Fixed segment had revenues of Ps. 114,080 million, representing 18.8% of our consolidated revenues for such
period. As of December 31, 2010, our Mexico Fixed operations represented approximately 44.6% of our total RGUs, as compared to 48.9% at December 31, 2009.

The following table sets forth information regarding our Mexico Fixed segments subscriber base, traffic and operating measures at the dates and for the periods indicated:



|                                 |  |              |        |   |      |  |        |  
|-------------------------------- |  | ------------ | ------ | - | ---- |  | ------ | -
|                                 |  | December 31, |       
|                                 |  | 2009         |        |   | 2010 | 
|RGUs (thousands):                |  |              |        |   |      |  |        |  
|Fixed voice                      |  |              | 15,882 |   |      |  | 15,591 |  
|Broadband                        |  |              | 6,524  |   |      |  | 7,359  |  
|                                 |  |              |        |   |      |  |        |  
|Total                            |  |              | 22,406 |   |      |  | 22,950 |  
|                                 |  |              |        |   |      |  |        |  
|Traffic (year ended) (millions): |  |              |        |   |      |  |        |  
|Long distance minutes            |  |              | 25,222 |   |      |  | 25,636 |  
|Interconnection minutes          |  |              | 38,155 |   |      |  | 37,868 |  
|                                 |  |              |        |   |      |  |        |  
|Total minutes                    |  |              | 63,377 |   |      |  | 63,504 |  
|                                 |  |              |        |   |      |  |        |  
|Churn rate (year ended):         |  |              |        |   |      |  |        |  
|Fixed voice                      |  |              | 1.4    | % |      |  | 0.9    | %
|Broadband                        |  |              | 1.6    | % |      |  | 1.6    | %

Services and Products

Voice Services and Products

Telmex offers a variety of fixed-line voice services and products, including local service, domestic and international long-distance service and public telephony services, under a variety of plans to meet
the needs of different user segments.

Telmex charges for fixed-line local telephone service include (a) installation
charges, (b) monthly line rental charges, (c) monthly measured service charges, (d) digital services and (e) charges for other services, such as the transfer of a line to another address and reconnection. Residential customers
pay a fixed charge per local call in excess of a monthly allowance of 100 local calls, and commercial customers pay for every local call at the same fixed rate per call. The concession Telmex holds to operate a public network for basic telephone
services permits but does not require Telmex to base its charges on the duration of each call, with a monthly allowance of free calls or call minutes for residential customers. Telmex does not currently charge by duration of invoiced calls in any
region, except in the case of prepaid services. In 2010, Telmex did not increase rates for local telephone service. Telmex has had lower rates in real terms for every year since 2001.

Telmexs rates for domestic long-distance service are based on call duration and type of service (direct-dial or operator-assisted)
once customers exceed the number of minutes included in their service packages. In 2010 Telmex did not increase its rates for domestic long-distance calls. This continues Telmexs trend of offering lower rates in real terms every year since
1999.

Charges for international long-distance calls are based on call duration, type of service (direct-dial or
operator-assisted) and the destination of the call once customers exceed the number of minutes included in their



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plan. Customers can choose from a variety of discount rate plans. In 2010, Telmex did not increase its rates for international long-distance calls, continuing its trend of offering lower rates in
real terms every year since 1999.

In addition, Telmex provides interconnection services pursuant to which
(a) long-distance, local and mobile phone carriers operating in Mexico establish points of interconnection between their networks and Telmexs network and (b) Telmex carries calls between the points of interconnection and its
customers. When a customer of another carrier calls a local service customer of Telmex, Telmex completes the call by carrying the call from the point of interconnection to the particular customer, and when a local service customer of Telmex who has
preselected a competing long-distance carrier makes a long-distance call, Telmex carries the call from the customer to the point of interconnection with that other long-distance carriers network. Excluding the calling party pays
service, Telmex only has one rate for interconnecting all categories of carriers and all types of calls. As a result of Mexicos bill and keep system, under which local carriers and cable television providers do not pay
interconnection fees to other local carriers, Telmex does not receive an interconnection fee from these calls.

Telmex also
had more than 661 thousand fixed-line public telephones in operation at December 31, 2010.

Data Services and
Products

Telmexs data service business is comprised of corporate network services and Internet access service.

Corporate networks consist of the transmission of voice, video and data between two or more end points using private
circuits. Telmexs principal product offerings for corporate networks are Ladaenlaces (Ladalinks) and multi-service virtual private networks (VPNs), which allows Telmex to provide different levels of service for voice, data and
video applications. Telmex also provides specialized assistance and technical support for these applications. Telmex also provides network outsourcing services that include maintenance, support and integration of communication networks and
information systems.

Telmexs broadband service, which it provides under the Infinitum brand, allows its customers to
use its high-capacity connectivity services with applications such as video-conferencing, file transfer, terminals and email. Infinitum operates over Asymmetric Digital Subscriber Line (ADSL) technology. In October 2010, Telmex began the
marketing of 20 Mbps Internet access for residential customers.

Multi-Service Offers

Telmex has introduced a number of multi-service offers designed to meet the needs of its customers. For example, in order to promote local
service among Telmexs customers, Telmex has introduced multi-service offers that include unlimited local and domestic long-distance calls. Telmex has also introduced packages of telecommunications services that include a certain number of
local calls and/or minutes for domestic long-distance.

In addition, consistent with Telmexs strategy of retaining its
current customers and maximizing the value of residential and business Internet accounts, in 2010 Telmex continued to offer flexible plans permitting Infinitum customers to create their own individualized packages of additional voice services,
including a combination of local and long-distance calls.

Other Services and Products

In addition, Telmex provides various telecommunications and telecommunications-related products and services that include sales of
computers, telecommunications equipment and accessories.

In November 2008, Telmex entered into several agreements with Dish
México and its affiliates, which operate a DTH Pay TV system in Mexico pursuant to which Telmex is currently providing customary billing and collection services, customer equipment and access to the Telmex retail distribution network. Subject
to obtaining specified authorizations, Telmex could invest directly in a joint venture with Dish.



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Sales and Distribution

Telmex uses its network of 388 Telmex stores (Tiendas Telmex) to offer its products and services throughout Mexico. In addition to their function as customer service centers, the Telmex stores
offer a wide range of computer and telecommunications equipment and accessories, which may be purchased outright or through installment payment plans.

Billing and Collection

Telmexs invoices detail the number and
destination of local and long-distance calls made, and charges for other services. On Telmexs website (www.telmex.com), Telmex customers can view their statements in detail: SI@NA for corporate customers and Mi Telmex
for residential and commercial customers. Telmexs website provides information about its services, corporate information and access to online transactions such as order services and the payment of invoices.

Telmex also offers billing and collection services to other companies through its phone bill. Telmex currently provides billing and
collection services to companies such as Medicalhome, Socio Águila, Teletón, Telecomunicaciones de México and Dish México.

Customer Service

Telmex provides support to its customers through its
customer service centers, call centers and its website. Telmex services its corporate clients through its integrated service plans that can be customized to meet the specific needs of individual clients. Telmex assigns specialized staff to service
large corporate clients.

Our Networks and Technology

Telmexs local and long-distance fiber optic network consists of 115,750 kilometers, reaches more than 90% of Mexicos population, connects the major cities in Mexico, connects Mexico via
submarine cables with 28 other countries and includes secondary branches and additional transmission rings throughout Mexico designed to avoid network congestion. In addition, Telmexs international long-distance traffic may also be carried by
microwave transmission and satellite systems.

Competition

Telmex faces competition from other holders of long-distance licenses, holders of local service licenses, Pay TV operators with licenses to provide telephone and Internet service and wireless
telecommunications providers. Telmexs principal competitors in Mexico are Axtel, Maxcom, Megacable, Cablevisión, Cablemás and Movistar.



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BRAZILIAN OPERATIONS

We offer wireless, fixed line voice, broadband, Pay TV and directory services and products in our Brazil segment through our subsidiaries
Americel S.A. (Americel), Claro S.A. (Claro), Embratel and Star One. We offer wireless services under the Claro brand and fixed line services under the Embratel brand. In addition, Embratel owns a non-controlling interest in
Net Serviços, the largest cable television operator in Brazil. In addition to broadband and cable television services, Net Serviços also offers the NET Fonefixed line voice service as part of the triple play package provided
jointly with our subsidiary Embratel. We are the third largest wireless telecommunications services provider in Brazil, measured by number of subscribers.

As of December 31, 2010, we had approximately 51.6 million wireless subscribers, approximately 80.2% of which were prepaid customers, which represented a market share of 25.4%. As of
December 31, 2010, we also had approximately 7.9 million fixed line subscribers, 3.8 million broadband subscribers and 6.9 million Pay TV subscribers.

In 2010, our Brazil segment had revenues of Ps. 154,309 million, representing 25.4% of our consolidated revenues for such period. As of December 31, 2010, our Brazil segment operations
represented approximately 22.9% of our total wireless subscribers, as compared to 22.1% at December 31, 2009, and approximately 36.1% of our total RGUs, as compared to 31.7% at December 31, 2009.

The following table sets forth information regarding our Brazil segments subscriber base, traffic, market share and operating
measures at the dates and for the periods indicated:



|                                 |  |              |              |   |      |  |              |  
|-------------------------------- |  | ------------ | ------------ | - | ---- |  | ------------ | -
|                                 |  | December 31, |             
|                                 |  | 2009         |              |   | 2010 | 
|Wireless Operations:             |  |              |              |   |      |  |              |  
|ARPU (year ended)                |  |              | Ps.      147 |   |      |  | Ps.      140 |  
|Subscribers (thousands):         |  |              |              |   |      |  |              |  
|Prepaid                          |  |              | 35,731       |   |      |  | 41,394       |  
|Postpaid                         |  |              | 8,670        |   |      |  | 10,243       |  
|                                 |  |              |              |   |      |  |              |  
|Total                            |  |              | 44,401       |   |      |  | 51,638       |  
|                                 |  |              |              |   |      |  |              |  
|Market share                     |  |              | 25.5         | % |      |  | 25.4         | %
|MOUs (year ended)                |  |              | 84           |   |      |  | 95           |  
|Wireless churn rate (year ended) |  |              | 2.8          | % |      |  | 3.0          | %
|                                 |  |             
|Fixed Operations:                |  |              |              |   |      |  |              |  
|RGUs (thousands)(1):             |  |              |              |   |      |  |              |  
|Fixed voice                      |  |              | 6,452        |   |      |  | 7,918        |  
|Broadband                        |  |              | 3,104        |   |      |  | 3,770        |  
|Pay TV                           |  |              | 4,959        |   |      |  | 6,901        |  
|                                 |  |              |              |   |      |  |              |  
|Total                            |  |              | 14,514       |   |      |  | 18,588       |  
|                                 |  |              |              |   |      |  |              |  
|Traffic (year ended) (millions): |  |              |              |   |      |  |              |  
|Long distance minutes            |  |              | 15,600       |   |      |  | 15,491       |  
|Interconnection minutes          |  |              | 6,048        |   |      |  | 7,409        |  
|                                 |  |              |              |   |      |  |              |  
|Total minutes                    |  |              | 21,648       |   |      |  | 22,900       |  
|                                 |  |              |              |   |      |  |              |  
|Churn rate (year ended)(1):      |  |              |              |   |      |  |              |  
|Fixed voice                      |  |              | 5.6          | % |      |  | 5.2          | %
|Broadband                        |  |              | 1.6          | % |      |  | 1.5          | %
|Pay TV                           |  |              | 1.2          | % |      |  | 1.3          | %



|(1) | Includes Net Serviços.
|--- | ----------------------



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Services and Products

Wireless Voice Services and Products

Claro offers wireless voice
services under a variety of rate plans to meet the needs of different user segments. The rate plans are either postpaid, where the customer is billed monthly for the previous month, or prepaid, where the customer pays in
advance for a specified volume of use over a specified period.

Fixed Line Voice Services and Products

Embratel is one of Brazils major domestic long-distance service providers, offering inter-regional,
intra-regional and intra-sectorial long-distance services to corporate, residential and cellular customers throughout Brazil. Embratel also provides international long-distance services. The majority of Embratels long-distance voice services
customers are not pre-subscribed, meaning that customers do not register with Embratel before it begins providing services to them. Instead, each time a customer initiates a long-distance domestic or international call from either a
fixed or a mobile terminal, the customer chooses whether to use Embratels services by dialing the 21 selection code or to use the services of another service provider by dialing a different code. In addition, Embratel is one of two
local service providers present in all Brazilian states, marketing its wireless local services to residential customers under the Livre and NET Fonebrand and to our large- and medium-sized business customers under the VipLine and
Rede Vipbrands.

In addition, other telecommunications companies that wish to interconnect with and use Embratels
network must pay certain fees, including a network usage fee. The network usage fee is subject to a price cap set by Anatel. The price cap for the network usage fee varies from operator to operator based on the underlying cost characteristics of
each companys network. The fee is charged on a per distance and/or per minute of use basis that represents an average charge for a basket of network elements and services.

Broadband and Data Services

Embratel is also one of Brazils leading providers of data communication services, serving a client base that includes a substantial majority of Brazils top 500 corporations. Embratels
data transmission services include the renting of high-speed data lines to businesses and to other telecommunications providers, satellite data transmission, Internet services, packet-switched data transmission, frame relay and message-handling
systems. In March 2010, Embratel launched a new broadband Internet service over its hybrid fiber coaxial (HFC) network.

DTH Pay TV

Embratel also offers Pay TV services through DTH
technology. Monthly subscription fees range in price from R$54.90 to R$159.90, including taxes.

Other services

Embratel is Brazils leading provider of satellite solutions, including space segment provision, broadband and
data network services. Embratels satellite fleet has also permitted it to significantly expand the telecommunications services it offers to its customers, reaching areas not covered by terrestrial networks with services such as television,
data, Internet, distance education, telephony and other special services projects. Embratel also provides text, telex, sound and image transmission and maritime communications services, as well as call center services through BrasilCenter to related
third parties, including Claro and Net Serviços.

Net Serviços

Embratel owns a non-controlling interest in Net Serviços, the largest cable television operator in Brazil. As of December 31,
2010, Net Serviços had approximately 4.2 million pay television subscribers (3.7 million at the end of 2009) and 3.5 million Internet broadband subscribers (2.9 million at the end of 2009). During the year ended December 31,
2010, Net Serviços had revenues of R$5,405.7 million and net income of R$307.2 million.



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The NET Fonelocal telephony service, which uses Voice over Internet Protocol
(VoIP) technology, had approximately 3.2 million subscribers as of December 31, 2010, compared to 2.6 million as of December 31, 2009, and is available in 92 cities.

As of the date of this annual report, Embratels total direct and indirect interest in Net Serviços is 91.9%. Embratel
originally acquired the interest in Net Serviços from Globo Comunicações e Participações S.A. and two related entities (collectively, Globo) in 2005 and increased its interest in successive transactions
with Globo in 2006 and 2007. Embratels interest was subsequently diluted in 2007 when Net Serviços issued shares to acquire Vivax. Embratel increased its participation in Net Serviços through the purchase of 193,701,299 preferred
shares of Net Serviços for R$4,457 million in cash, pursuant to a tender offer that expired on January 13, 2011.

A majority of the voting shares of Net Serviços is owned by GB Empreendimentos e Participações S.A.
(GB). Globo owns a majority of the voting interests in GB. Globo also owns Net Serviços Brasil S.A., a company with which Net Serviços has a long-term agreement to purchase Brazilian source programming and a licensing
agreement for the right to use the Net brand name through 2015.

Under current Brazilian law governing cable
operators, Embratel is not permitted to control Net Serviços because Embratel is not under the control of Brazilian citizens. If Brazilian law changes to allow Embratel to own a controlling interest in Net Serviços, Embratel (which
currently owns 49% of the voting interests and all of the non-voting interests in GB) has the right to purchase an additional interest in GB to give it control of 51% of the voting shares of Net Serviços, and Globo has the right to cause
Embratel to purchase such interest.

Marketing

Claro has developed a variety of promotional programs and products tailored to meet its clients mobility needs while increasing its market share. Claro considers these promotional programs and
products as one of its most significant competitive advantages. Claro also aggressively targets corporate customers by offering customized products and services and negotiating discounts on a case-by-case basy. Additionally, Claro has innovative
customer loyalty programs that help it retain clients.

Embratel has developed a variety of promotional and customer retention
programs that offer discounts and are designed to increase Embratels market share and promote usage of the 21 carrier selection code assigned to Embratel. In addition, Embratel negotiates discounts with corporate customers on a
case-by-case basis. Embratel also employs campaigns that target specific groups of its corporate customers, such as small- and medium-sized businesses or regional groups.

Sales and Distribution

Claro markets its services primarily through retail
chains, which amount to approximately 8,894 points of sale, exclusive distributors, which represent approximately 2,755 points of sale and its approximately 190 company-owned stores, which offer one-stop shopping for a variety of cellular services
and products. Claro also sells and distributes its products and services over the Internet. Claros stores also serve as customer service centers, and Claro expects to continue to open new service centers as necessary in order to offer its
products directly to subscribers in more effective ways. Claro also has a corporate sales group to service the needs of its large corporate and other high-usage customers. In the year ended December 31, 2010, approximately 54% of Claros
sales of handsets were generated by retail chains, 32% by exclusive distributors and approximately 13% from sales in company-owned stores.

Embratels Livre local fixed telephony service is marketed in person through exclusive distributors, through its call center subsidiary BrasilCenter and through the internet. Embratels
other local fixed telephony service, NET Fone, is marketed through Net Serviços sales and distributions channels. Embratels pay-TV service, Via



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Embratel, is marketed in person through exclusive dealers and its company-owned stores, by phone through call centers and by the internet through Via Embratels website. In addition,
Embratel has a corporate sales group dedicated to the needs of its large corporate and other high-usage customers.

Billing and Collection

Wireless Operations

Claro bills its postpaid customers through monthly invoices that detail itemized charges, services, in addition to applicable taxes. Customers may pay their bills with a credit card, through online
banking, or in person at post offices or federal lottery houses(Casas Lotéricas).

If a Claro postpaid
customers payment is overdue, service may be suspended temporarily until payment is received. If the subscribers payment is more than 60 days past due, service may be discontinued permanently. Accounts that are more than 180 days past
due are categorized as doubtful accounts, as are all other accounts related to the same client.

A Claro prepaid customer who
purchases a card has between 90 and 180 days from the date of activation of the card to use the airtime. After such time, the customer can no longer use that airtime for outgoing calls unless the customer activates a new card. Sixty days after the
card expires, the balance on the card, if any, is recognized as revenue, unless the customer activates a new card.

Fixed Line Operations

Embratel directly bills a portion of its customers for their fixed line telecommunications and related services, including collect-calling and standard voice services. However, due to the risk of bad
debts resulting from direct billing, Embratel has taken a number of measures designed to reduce such risk, including implementing co-billing arrangements with other local operators that allow them to bill their local customers for Embratels
long-distance fees, using call centers, implementing an automated collections system, employing an anti-fraud system, using third-party collection firms and implementing a customer data system that allows for faster updating of information,
flexibility in customer account structure, quality improvement and improved payment of taxes across the different Brazilian states.

Our
Networks and Technology

Wireless Networks

Claro owns and operates wireless networks using GSM and 3G technologies. As of December 31, 2010, Claros GSM network, which
Claro continues rolling out, covered more than 3,496 cities and was used by 84.1% of its wireless subscribers. In addition, Claros 3G network, which was the first in Brazil and which Claro continues rolling out, covers 416 cities where
approximately 55.2% of Brazils population resides.

Fixed Line Networks

We believe that Embratel owns the largest long-distance network in Latin America and the largest data transmission network in Brazil.
Embratels long-distance and data transmission networks use fiber optic, digital microwave, satellite and copper wireline technologies. Embratels networks use a 100% digital switching system for voice and data services and the latest
generation Internet Protocol (IP) routers to support IP-based services, Internet access and VPNs through Multiprotocol Label Switching (MPLS) technology. Embratels Internet backbone is the largest in Latin America with
1,100 Gbps capacity distributed through 1,401 points of presence and 52 routing centers, and its network also connects to the international Internet backbone. Embratel also has approximately 49,506 kilometers of cable in a mesh network that has
three or more outlets with a capacity of 7.1 Tbps. Embratel has local metropolitan digital fiber networks with approximately 8,504 kilometers of cable in the



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major Brazilian cities. Embratel is attaching fiber extensions to commercial buildings connected to metropolitan rings, providing high quality direct connections. Embratels submarine cable
network reaches all continents through 11 different cable systems in which it has various ownership interests.

Embratels networks have also been modified to use Net Serviços coaxial cable networks to provide telephony services to
Net Serviços broadband customers through NET Fone. In December 2009, Net Serviços granted Embratel an indefeasible right to use its HFC network to provide local fixed telephone service.

To supplement its network, Embratel uses long-distance microwave systems, with a total range of 16,254 kilometers, in areas where
installation of fiber cables is difficult and five satellites to provide services to remote locations within the country, and it leases satellite capacity from international satellite systems and submarine capacity in other private cable systems.
Embratel also offers local telephony services to its Livreresidential customers using CDMA digital wireless technology.

Satellite Network

Embratel has the most extensive satellite system in Latin America with a fleet covering the entire territory of South America, Mexico, part of Central America and part of Florida. Embratel currently has
five satellites in full operation, i.e. in geostationary orbit, including one which it owns jointly with SES World Skies and it also owns 11 transponders on board of another satellite operated by SES World Skies. Star One also currently operates
three earth stations, the principal of which is certified by the International Organization for Standardization and controls the operations of its satellites.

Embratel has a program to replace satellites that are nearing or have reached the end of their contractual lives, thereby ensuring the continuity and quality of its communication services to most of South
America. In accordance with that program, Embratel signed a contract with Orbital Sciences Corporation in December 2009 for the in-orbit delivery of a new generation satellite that can provide expanded coverage. This satellite is intended to replace
one of its satellites that is expected to run out of propellant by February 2013. The new satellite is currently being manufactured and is expected to become operational in June 2012.

Competition

Claros principal wireless competitors are Vivo, TIM, Oi,
CTBC, Sercomtel and Nextel; and Embratels principal fixed-line competitors are Oi, CTBC, Intelig, Telefónica and Global Village Telecom.



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SOUTHERN CONE OPERATIONS

We offer wireless, fixed line voice, broadband and Pay TV services and products in our Southern Cone segment under the Claro brand
through our subsidiaries AMX Argentina S.A. (AMX Argentina), Telmex Argentina S.A. (Telmex Argentina), Claro Chile S.A (Claro Chile), Claro Comunicaciones S.A. (Claro Comunicaciones), Claro Servicios
Empresariales S.A. (Claro Servicios Empresariales), AMX Paraguay, S.A. (AMX Paraguay), AM Wireless Uruguay, S.A. (AM Wireless Uruguay) and Telstar, S.A. We are the largest wireless telecommunications services
provider in Argentina and the third largest in Chile, Paraguay and Uruguay, measured by number of subscribers.

As of
December 31, 2010, we had approximately 24.5 million wireless subscribers, approximately 68.5% of which were prepaid customers, which represented a market share of 29.1%. As of December 31, 2010, we also had approximately
0.4 million fixed line subscribers, 0.2 million broadband subscribers and 0.5 million Pay TV subscribers.

In
2010, our Southern Cone segment had revenues of Ps. 43,466 million, representing 7.2% of our consolidated revenues for such period. As of December 31, 2010, our Southern Cone segment operations represented approximately 10.9% of our total
wireless subscribers, the same percentage they represented at December 31, 2009, and approximately 2.1% of our total RGUs, compared to 1.8% at December 31, 2009.

The following table sets forth information regarding our Southern Cone segments subscriber base, traffic, market share and operating measures at the dates and for the periods indicated:



|                                 |  |              |             |   |      |  |             |  
|-------------------------------- |  | ------------ | ----------- | - | ---- |  | ----------- | -
|                                 |  | December 31, |            
|                                 |  | 2009         |             |   | 2010 | 
|Wireless Operations:             |  |              |             |   |      |  |             |  
|ARPU (year ended)                |  |              | Ps.     119 |   |      |  | Ps.     117 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |  
|Prepaid                          |  |              | 15,115      |   |      |  | 16,791      |  
|Postpaid                         |  |              | 6,718       |   |      |  | 7,717       |  
|                                 |  |              |             |   |      |  |             |  
|Total                            |  |              | 21,833      |   |      |  | 24,508      |  
|                                 |  |              |             |   |      |  |             |  
|Market share                     |  |              | 28.7        | % |      |  | 29.1        | %
|MOUs (year ended)                |  |              | 142         |   |      |  | 145         |  
|Wireless churn rate (year ended) |  |              | 2.6         | % |      |  | 2.6         | %
|                                 |  |             
|Fixed Operations:                |  |              |             |   |      |  |             |  
|RGUs (thousands):                |  |              |             |   |      |  |             |  
|Fixed voice                      |  |              | 293         |   |      |  | 354         |  
|Broadband                        |  |              | 151         |   |      |  | 217         |  
|Pay TV                           |  |              | 390         |   |      |  | 496         |  
|                                 |  |              |             |   |      |  |             |  
|Total                            |  |              | 834         |   |      |  | 1,067       |  
|                                 |  |              |             |   |      |  |             |  
|Traffic (year ended) (millions): |  |              |             |   |      |  |             |  
|Long distance minutes            |  |              | 2,647       |   |      |  | 2,472       |  
|Interconnection minutes          |  |              | 1,074       |   |      |  | 1,243       |  
|                                 |  |              |             |   |      |  |             |  
|Total minutes                    |  |              | 3,721       |   |      |  | 3,715       |  
|                                 |  |              |             |   |      |  |             |  
|Churn rate (year ended):         |  |              |             |   |      |  |             |  
|Fixed voice                      |  |              | 1.7         | % |      |  | 2.0         | %
|Broadband                        |  |              | 2.8         | % |      |  | 2.8         | %
|Pay TV                           |  |              | 4.4         | % |      |  | 3.9         | %



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##### Table of Contents

Services and Products

Wireless Services and Products

We offer wireless voice and data
services under a variety of plans to meet the needs of different user segments. The plans are either postpaid, where the customer is billed monthly for the previous month and may terminate the plan at any time, subject to certain
exceptions, or prepaid, where the customer pays in advance for a specified volume of use over a specified period.

We also offer international roaming services to our subscribers through the networks of cellular service providers with which we have
entered into international roaming agreements around the world, and we provide GSM and 3G roaming services to customers of our international roaming partners.

In connection with the provision of our voice services, we earn interconnection revenues from calls to any of our subscribers that originate with another service provider. We charge the service provider
from whose network the call originates an interconnection charge for the time our network is used in connection with the call. Similarly, we must pay interconnection fees in respect of calls made by our subscribers to customers of other service
providers.

We offer data services, including SMS, MMS, Premium SMS and Premium MMS, Mobile Entertainment Services, Data
Transmission, Internet Browsing and E-mail Services.

We also offer a variety of products as complements to our wireless
service, including handsets and smart phones and accessories such as chargers, headsets, belt clips, batteries, broadband cards and netbooks. In addition, we offer other wireless services, such as Push-to-Talk Services.

Fixed Line Services and Products

We offer fixed line voice services, including local and long-distance services, data services, including data administration and hosting services, broadband services and Pay TV services to both corporate
and residential customers under a variety of plans to meet the needs of different user segments.

Our Networks and Technology

In Argentina, our wireless networks, which cover approximately 100% of the population, use GSM and 3G technologies. In
Chile, our wireless networks, which cover approximately 99% of the population, use CDMA, GSM and 3G technologies. In Paraguay, our wireless networks, which cover approximately 64% of the population, use GSM and 3G technologies. In Uruguay, our
wireless networks, which cover approximately 90% of the population, use GSM and 3G technologies. In Argentina, our fixed-line networks use pre-WiMax, Wireless Local Loop (WLL), WiMax, local point-multipoint distribution service
(LMDS) and HFC technologies. In Chile, our fixed-line networks use satellite and HFC technologies. In Uruguay, our fixed-line networks use LMDS and HFC technologies.

Competition

In Argentina, our principal wireless competitors are Telecom
Personal and Movistar; and our principal fixed-line competitors are Teléfonica de Argentina, Telecom Argentina, Global Crossing, Comsat and NSS. In Chile, our principal wireless competitors are Entel, Movistar and VTR; and our principal
fixed-line competitors are Movistar, DirecTV and GTD. In Paraguay, our principal competitors are Telecel, Nucleo and Hola Paraguay. In Uruguay, our principal wireless competitors are Movistar and Ancel; and our principal fixed-line competitors are
Antel, Telefónica and Dedicado Telecomunicaciones.



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COLOMBIA AND PANAMA OPERATIONS

We offer wireless, fixed line voice, broadband, Pay TV and directory services and products in our Colombia and Panama segment through our
subsidiaries Comcel, Telmex Colombia S.A. (Telmex Colombia) and Claro Panamá, S.A. (Claro Panamá). In Colombia, we offer our wireless services under the Comcel brand and our fixed line services under the Telmex
brand. In Panama, we offer our services under the Claro brand. We are the largest wireless telecommunications services provider in Colombia and the fourth largest in Panama, measured by number of subscribers.

As of December 31, 2010, we had approximately 29.4 million wireless subscribers, approximately 85.6% of which were prepaid
customers, which represented market share of 60.7%. As of December 31, 2010, we also had approximately 0.6 million fixed line subscribers, 0.6 million broadband subscribers and 1.8 million Pay TV subscribers.

In 2010, our Colombia and Panama segment had revenues of Ps. 48,893 million, representing 8.0% of our consolidated revenues for such
period. As of December 31, 2010, our Colombia and Panama segment operations represented approximately 13.1% of our total wireless subscribers, as compared to 13.8% at December 31, 2009, and approximately 5.8% of our total RGUs, as compared
to 6.0% at December 31, 2009.

The following table sets forth information regarding our Colombia and Panama
segments subscriber base, traffic, market share and operating measures at the dates and for the periods indicated:



|                                 |  |              |              |   |      |  |             |  
|-------------------------------- |  | ------------ | ------------ | - | ---- |  | ----------- | -
|                                 |  | December 31, |             
|                                 |  | 2009         |              |   | 2010 | 
|Wireless Operations:             |  |              |              |   |      |  |             |  
|ARPU (year ended)                |  |              | Ps.       99 |   |      |  | Ps.     106 |  
|Subscribers (thousands):         |  |              |              |   |      |  |             |  
|Prepaid                          |  |              | 23,830       |   |      |  | 25,171      |  
|Postpaid                         |  |              | 3,967        |   |      |  | 4,242       |  
|                                 |  |              |              |   |      |  |             |  
|Total                            |  |              | 27,797       |   |      |  | 29,413      |  
|                                 |  |              |              |   |      |  |             |  
|Market share                     |  |              | 62.3         | % |      |  | 60.7        | %
|MOUs (year ended)                |  |              | 173          |   |      |  | 198         |  
|Wireless churn rate (year ended) |  |              | 3.5          | % |      |  | 3.5         | %
|                                 |  |             
|Fixed Operations:                |  |              |              |   |      |  |             |  
|RGUs (thousands):                |  |              |              |   |      |  |             |  
|Fixed voice                      |  |              | 481          |   |      |  | 571         |  
|Broadband                        |  |              | 505          |   |      |  | 614         |  
|Pay TV                           |  |              | 1,767        |   |      |  | 1,802       |  
|                                 |  |              |              |   |      |  |             |  
|Total                            |  |              | 2,753        |   |      |  | 2,988       |  
|                                 |  |              |              |   |      |  |             |  
|Traffic (year ended) (millions): |  |              |              |   |      |  |             |  
|Long distance minutes            |  |              | 18           |   |      |  | 32          |  
|Interconnection minutes          |  |              | 340          |   |      |  | 441         |  
|                                 |  |              |              |   |      |  |             |  
|Total minutes                    |  |              | 358          |   |      |  | 473         |  
|                                 |  |              |              |   |      |  |             |  
|Churn rate (year ended):         |  |              |              |   |      |  |             |  
|Fixed voice                      |  |              | 2.5          | % |      |  | 2.4         | %
|Broadband                        |  |              | 2.3          | % |      |  | 2.3         | %
|Pay TV                           |  |              | 3.3          | % |      |  | 2.4         | %



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##### Table of Contents

Services and Products

Wireless Services and Products

We offer wireless voice and data
services under a variety of plans to meet the needs of different user segments. The plans are either postpaid, where the customer is billed monthly for the previous month and may terminate the plan at any time, subject to certain
exceptions, or prepaid, where the customer pays in advance for a specified volume of use over a specified period.

We also offer international roaming services to our subscribers through the networks of cellular service providers with which we have
entered into international roaming agreements around the world, and we provide GSM and 3G roaming services to customers of our international roaming partners.

In connection with the provision of our voice services, we earn interconnection revenues from calls to any of our subscribers that originate with another service provider. We charge the service provider
from whose network the call originates an interconnection charge for the time our network is used in connection with the call. Similarly, we must pay interconnection fees in respect of calls made by our subscribers to customers of other service
providers.

We offer data services, including SMS, MMS, Premium SMS and Premium MMS, Mobile Entertainment Services, Data
Transmission, Internet Browsing and E-mail Services.

We also offer a variety of products as complements to our wireless
service, including handsets and smart phones and accessories such as chargers, headsets, belt clips, batteries, broadband cards and netbooks. In addition, we offer other wireless services, such as Push-to-Talk Services.

Fixed Line Services and Products

We offer fixed line voice services, including local and long-distance services, data services, including data administration and hosting services, broadband services and Pay TV services to both corporate
and residential customers under a variety of plans to meet the needs of different user segments.

Our Networks and Technology

In Colombia, our wireless networks, which cover approximately 69% of the population, use 3G technologies, while in
Panama, our wireless networks cover approximately 83.3% of the population and use GSM technology. In Colombia, our fixed-line networks use HFC technologies.

Competition

In Colombia, our principal wireless competitors are
Telefónica Móviles and Colombia Móvil; and our principal fixed-line competitors are Telefónica Telecom, Empresa de Telecomunicaciones de Bogotá and EPM Telecomunicaciones. In Panama, our principal wireless and Pay
TV competitors are Telefónica Móviles, Cable & Wireless and Digicel.



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##### Table of Contents

ANDEAN REGION OPERATIONS

We offer wireless, fixed line voice, broadband, Pay TV and directory services and products in our Andean Region segment under the Claro
brand through our subsidiaries Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel), Ecuador Telecom S.A. (Ecuador Telecom), América Móvil Perú, S.A.C. and Telmex Perú, S.A. (Telmex
Perú). We are the largest wireless telecommunications services provider in Ecuador and the second largest in Peru, measured by number of subscribers.

As of December 31, 2010, we had approximately 20.3 million wireless subscribers, approximately 87.3% of which were prepaid customers, which represented a market share of 52.8%. As of
December 31, 2010, we also had approximately 0.2 million fixed line subscribers, 0.1 million broadband subscribers and 0.2 million Pay TV subscribers.

In 2010, our Andean Region segment had revenues of Ps. 29,484 million, representing 4.9% of our consolidated revenues for such period. As of December 31, 2010, our Andean Region segment
operations represented approximately 9.0% of our total wireless subscribers, as compared to 8.8% at December 31, 2009, and approximately 1.1% of our total RGUs, as compared to 0.7% at December 31, 2009.

The following table sets forth information regarding our Andean Region segments subscriber base, traffic, market share and
operating measures at the dates and for the periods indicated:



|                                 |  |              |             |   |      |  |             |  
|-------------------------------- |  | ------------ | ----------- | - | ---- |  | ----------- | -
|                                 |  | December 31, |            
|                                 |  | 2009         |             |   | 2010 | 
|Wireless Operations:             |  |              |             |   |      |  |             |  
|ARPU (year ended)                |  |              | Ps.     105 |   |      |  | Ps.     102 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |  
|Prepaid                          |  |              | 15,781      |   |      |  | 17,738      |  
|Postpaid                         |  |              | 1,978       |   |      |  | 2,572       |  
|                                 |  |              |             |   |      |  |             |  
|Total                            |  |              | 17,760      |   |      |  | 20,310      |  
|                                 |  |              |             |   |      |  |             |  
|Market share                     |  |              | 52.1        | % |      |  | 52.8        | %
|MOUs (year ended)                |  |              | 100         |   |      |  | 109         |  
|Wireless churn rate (year ended) |  |              | 2.2         | % |      |  | 2.4         | %
|                                 |  |             
|Fixed Operations:                |  |              |             |   |      |  |             |  
|RGUs (thousands):                |  |              |             |   |      |  |             |  
|Fixed voice                      |  |              | 120         |   |      |  | 171         |  
|Broadband                        |  |              | 69          |   |      |  | 124         |  
|Pay TV                           |  |              | 150         |   |      |  | 249         |  
|                                 |  |              |             |   |      |  |             |  
|Total                            |  |              | 338         |   |      |  | 544         |  
|                                 |  |              |             |   |      |  |             |  
|Traffic (year ended) (millions): |  |              |             |   |      |  |             |  
|Long distance minutes            |  |              | 374         |   |      |  | 345         |  
|Interconnection minutes          |  |              | 1,017       |   |      |  | 1,003       |  
|                                 |  |              |             |   |      |  |             |  
|Total minutes                    |  |              | 1,391       |   |      |  | 1,348       |  
|                                 |  |              |             |   |      |  |             |  
|Churn rate (year ended):         |  |              |             |   |      |  |             |  
|Fixed voice                      |  |              | 4.0         | % |      |  | 2.3         | %
|Broadband                        |  |              | 5.4         | % |      |  | 2.5         | %
|Pay TV                           |  |              | 4.9         | % |      |  | 3.9         | %



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##### Table of Contents

Services and Products

Wireless Services and Products

We offer wireless voice and data
services under a variety of plans to meet the needs of different user segments. The plans are either postpaid, where the customer is billed monthly for the previous month and may terminate the plan at any time, subject to certain
exceptions, or prepaid, where the customer pays in advance for a specified volume of use over a specified period.

We also offer international roaming services to our subscribers through the networks of cellular service providers with which we have
entered into international roaming agreements around the world, and we provide GSM and 3G roaming services to customers of our international roaming partners.

In connection with the provision of voice services, we earn interconnection revenues from calls to any of our subscribers that originate with another service provider. We charge the service provider from
whose network the call originates an interconnection charge for the time our network is used in connection with the call. Similarly, we must pay interconnection fees in respect of calls made by our subscribers to customers of other service
providers.

We offer data services, including SMS, MMS, Premium SMS and Premium MMS, Mobile Entertainment Services, Data
Transmission, Internet Browsing and E-mail Services.

We also offer a variety of products as complements to our wireless
service, including handsets and smart phones and accessories such as chargers, headsets, belt clips, batteries, broadband cards and netbooks. In addition, we offer other wireless services, such as Push-to-Talk Services.

Fixed Line Services and Products

We offer fixed line voice services, including local and long-distance services, data services, including data administration and hosting services, broadband services and Pay TV services to both corporate
and residential customers under a variety of plans to meet the needs of different user segments.

Our Networks and Technology

In Ecuador, our wireless networks, which cover approximately 76% of the population, use GSM and 3G technologies,
while in Peru, our wireless networks cover approximately 86% of the population and use GSM and 3G technologies. In Ecuador, our fixed-line networks use HFC technologies, while in Peru our fixed-line networks use CDMA, HFC and WiMax technologies.

Competition

In Ecuador, our principal wireless competitor is Otecel Móviles; and our principal fixed-line competitors are Grupo TV Cable and Corporación Nacional de Telecomunicaciones. In Peru, our
principal wireless competitor is Movistar Perú; and our principal fixed-line competitors are Telefónica del Perú, Americatel Perú and Telefónica Multimedia.



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##### Table of Contents

CENTRAL AMERICA OPERATIONS

We offer wireless, fixed line voice, broadband, Pay TV and directory services and products in our Central America segment under the Claro
brand through our subsidiaries Compañía de Telecomunicaciones de El Salvador (CTE), S.A. de C.V. (CTE), Telecom Personal, S.A. de C.V., Telecomunicaciones de Guatemala, S.A. (Telgua), Empresa Nicaragüense
de Telecomunicaciones, S.A. (Enitel) and Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras). We are the largest wireless telecommunications services provider in Nicaragua and second largest in El
Salvador, Guatemala and Honduras, measured by number of subscribers.

As of December 31, 2010, we had approximately
10.8 million wireless subscribers, approximately 93.9% of which were prepaid customers, which represented a market share of 33.8%. As of December 31, 2010, we also had approximately 2.3 million fixed line subscribers, 0.4 million
broadband subscribers and 0.6 million Pay TV subscribers.

In 2010, our Central America segment had revenues of Ps.
17,154 million, representing 2.8% of our consolidated revenues for such period. As of December 31, 2010, our Central America segment operations represented approximately 4.8% of our total wireless subscribers, as compared to 4.7% at
December 31, 2009 and approximately 6.3% of our total RGUs, as compared to 6.4% at December 31, 2009.

The following
table sets forth information regarding our Central America segments subscriber base, traffic, market share and operating measures at the dates and for the periods indicated:



|                                 |  |              |            |   |      |  |              |  
|-------------------------------- |  | ------------ | ---------- | - | ---- |  | ------------ | -
|                                 |  | December 31, |           
|                                 |  | 2009         |            |   | 2010 | 
|Wireless Operations:             |  |              |            |   |      |  |              |  
|ARPU (year ended)                |  |              | Ps.     77 |   |      |  | Ps.       69 |  
|Subscribers (thousands):         |  |              |            |   |      |  |              |  
|Prepaid                          |  |              | 9,085      |   |      |  | 10,122       |  
|Postpaid                         |  |              | 449        |   |      |  | 653          |  
|                                 |  |              |            |   |      |  |              |  
|Total                            |  |              | 9,535      |   |      |  | 10,775       |  
|                                 |  |              |            |   |      |  |              |  
|Market share                     |  |              | 32.7       | % |      |  | 33.8         | %
|MOUs (year ended)                |  |              | 109        |   |      |  | 116          |  
|Wireless churn rate (year ended) |  |              | 2.2        | % |      |  | 2.5          | %
|                                 |  |             
|Fixed Operations:                |  |              |            |   |      |  |              |  
|RGUs (thousands):                |  |              |            |   |      |  |              |  
|Fixed voice                      |  |              | 2,259      |   |      |  | 2,305        |  
|Broadband                        |  |              | 311        |   |      |  | 376          |  
|Pay TV                           |  |              | 359        |   |      |  | 550          |  
|                                 |  |              |            |   |      |  |              |  
|Total                            |  |              | 2,929      |   |      |  | 3,231        |  
|                                 |  |              |            |   |      |  |              |  
|Traffic (year ended) (millions): |  |              |            |   |      |  |              |  
|Long distance minutes            |  |              | 2,378      |   |      |  | 2,101        |  
|Interconnection minutes          |  |              | 1,017      |   |      |  | 868          |  
|                                 |  |              |            |   |      |  |              |  
|Total minutes                    |  |              | 3,395      |   |      |  | 2,969        |  
|                                 |  |              |            |   |      |  |              |  
|Churn rate (year ended):         |  |              |            |   |      |  |              |  
|Fixed voice                      |  |              | 0.7        | % |      |  | 1.0          | %
|Broadband                        |  |              | 1.8        | % |      |  | 1.8          | %
|Pay TV                           |  |              | 1.6        | % |      |  | 2.6          | %



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##### Table of Contents

Services and Products

Wireless Services and Products

We offer wireless voice and data
services under a variety of plans to meet the needs of different user segments. The plans are either postpaid, where the customer is billed monthly for the previous month and may terminate the plan at any time, subject to certain
exceptions, or prepaid, where the customer pays in advance for a specified volume of use over a specified period.

We also offer international roaming services to our subscribers through the networks of cellular service providers with which we have
entered into international roaming agreements around the world, and we provide GSM and 3G roaming services to customers of our international roaming partners.

In connection with the provision of our voice services, we earn interconnection revenues from calls to any of our subscribers that originate with another service provider. We charge the service provider
from whose network the call originates an interconnection charge for the time our network is used in connection with the call. Similarly, we must pay interconnection fees in respect of calls made by our subscribers to customers of other service
providers.

We offer data services, including SMS, MMS, Premium SMS and Premium MMS, Mobile Entertainment Services, Data
Transmission, Internet Browsing and E-mail Services.

We also offer a variety of products as complements to our wireless
service, including handsets and smart phones and accessories such as chargers, headsets, belt clips, batteries, broadband cards and netbooks. In addition, we offer other wireless services, such as Push-to-Talk Services.

Fixed Line Services and Products

We offer fixed line voice services, including local and long-distance services, data services, including data administration and hosting services, broadband services and Pay TV services to both corporate
and residential customers under a variety of plans to meet the needs of different user segments.

Our Networks and Technology

In El Salvador, our wireless networks, which cover approximately 91% of the population, use GSM technologies. In
Guatemala, our wireless networks, which cover approximately 84% of the population, use CDMA and GSM technologies. In Honduras, our wireless networks, which cover approximately 64% of the population, use GSM technologies. In Nicaragua, our wireless
networks, which cover approximately 76% of the population, use GSM technologies. Our Central America fixed line networks use HFC, VoIP and plain old telephone service (POTS) technologies.

Competition

In El
Salvador, our principal wireless competitors are Tigo, Telefónica de El Salvador, Digicel and Intelfon; and our principal fixed-line competitor is Amnet. In Guatemala, our principal wireless competitors are Tigo and Movistar. In Honduras, our
principal wireless competitors are Celtel, Digicel and Honducel; and our principal fixed-line competitor is Hondutel. In Nicaragua, our principal wireless competitor is Movistar. In March 2011, we entered into an agreement with Digicel to acquire
100% of Digicels operations in Honduras and El Salvador. Once the transaction closes, which is expected to occur during the second quarter of 2011, Digicel will no longer be our competitor in those countries.



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##### Table of Contents

UNITED STATES OPERATIONS

We offer wireless services and products in our United States segment through our subsidiary TracFone under the TracFone, Net10, Straight
Talk and SafeLink brands. We are the largest prepaid wireless telecommunications services provider in the U.S, measured by number of subscribers.

As of December 31, 2010, we had approximately 17.7 million wireless subscribers, all of which were prepaid customers, which represented a 39.7% share of the prepaid wireless market. In 2010, our
United States segment had revenues of Ps. 35,562 million, representing 5.9% of our consolidated revenues for such period. As of December 31, 2010, our United States segment operations represented approximately 7.9% of our total wireless
subscribers, as compared to 7.2% at December 31, 2009.

The following table sets forth information regarding our United
States segments subscriber base, market share and operating measures at the dates and for the periods indicated:



|                                 |  |              |             |   |      |  |             |  
|-------------------------------- |  | ------------ | ----------- | - | ---- |  | ----------- | -
|                                 |  | December 31, |            
|                                 |  | 2009         |             |   | 2010 | 
|ARPU (year ended)                |  |              | Ps.     135 |   |      |  | Ps.     161 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |  
|Prepaid                          |  |              | 14,427      |   |      |  | 17,749      |  
|Market share                     |  |              | 31.7        | % |      |  | 39.7        | %
|MOUs (year ended)                |  |              | 81          |   |      |  | 234         |  
|Wireless churn rate (year ended) |  |              | 4.0         | % |      |  | 4.0         | %

Services and Products

We offer prepaid wireless debit card services, as well as prepaid wireless handsets through an extensive distribution network of
independent retailers.

Networks and Technology

We do not own any wireless telecommunications facilities or hold any wireless spectrum licenses in the United States. Instead, we purchases airtime through agreements with approximately 10 wireless
service providers and resell airtime to customers. Through these agreements, we have a nationwide virtual network covering almost all areas in which wireless services are available.

Competition

We compete
with the major U.S. wireless operators and other mobile virtual network operators.



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##### Table of Contents

CARIBBEAN OPERATIONS

We offer wireless, fixed line voice, broadband and Pay TV services and products in our Caribbean segment under the Claro brand through
our subsidiaries Compañía Dominicana de Teléfonos, C. por A. (Codetel), Oceanic Digital Jamaica Limited (Oceanic) and Telecomunicaciones de Puerto Rico, Inc. (Telpri). In March 2011, we
entered into an agreement with Digicel to acquire 100% of Digicels operations in Honduras and El Salvador. As part of this transaction, we are selling our operations in Jamaica to Digicel. Once the transaction closes, which is expected to
occur during the second quarter of 2011, we will no longer operate in Jamaica. We are the largest wireless telecommunications services provider in the Dominican Republic and the second largest in Jamaica and Puerto Rico, measured by number of
subscribers.

As of December 31, 2010, we had approximately 6.5 million wireless subscribers, approximately 78.6% of
which were prepaid customers, which represented a market share of 41.6%. As of December 31, 2010, we also had approximately 1.5 million fixed line subscribers, 0.6 million broadband subscribers and 0.1 million Pay TV subscribers.

In 2010, our Caribbean segment had revenues of Ps. 26,993 million, representing 4.4% of our consolidated revenues for
such period. As of December 31, 2010, our Caribbean segment operations represented approximately 2.9% of our total wireless subscribers, as compared to 3.0% at December 31, 2009, and approximately 4.2% of our total RGUs, as compared to
4.4% at December 31, 2009.

The following table sets forth information regarding our Caribbean segments subscriber
base, traffic, market share and operating measures at the dates and for the periods indicated:



|                                 |  |              |            |   |      |  |            |  
|-------------------------------- |  | ------------ | ---------- | - | ---- |  | ---------- | -
|                                 |  | December 31, |           
|                                 |  | 2009         |            |   | 2010 | 
|Wireless Operations:             |  |              |            |   |      |  |            |  
|ARPU (year ended)                |  |              | Ps.    162 |   |      |  | Ps.    154 |  
|Subscribers (thousands):         |  |              |            |   |      |  |            |  
|Prepaid                          |  |              | 4,810      |   |      |  | 5,102      |  
|Postpaid                         |  |              | 1,233      |   |      |  | 1,392      |  
|                                 |  |              |            |   |      |  |            |  
|Total                            |  |              | 6,043      |   |      |  | 6,494      |  
|                                 |  |              |            |   |      |  |            |  
|Market share                     |  |              | 41.3       | % |      |  | 41.6       | %
|MOUs (year ended)                |  |              | 249        |   |      |  | 303        |  
|Wireless churn rate (year ended) |  |              | 4.3        | % |      |  | 4.9        | %
|                                 |  |             
|Fixed Operations:                |  |              |            |   |      |  |            |  
|RGUs (thousands):                |  |              |            |   |      |  |            |  
|Fixed voice                      |  |              | 1,531      |   |      |  | 1,483      |  
|Broadband                        |  |              | 451        |   |      |  | 559        |  
|Pay TV                           |  |              | 38         |   |      |  | 102        |  
|                                 |  |              |            |   |      |  |            |  
|Total                            |  |              | 2,020      |   |      |  | 2,144      |  
|                                 |  |              |            |   |      |  |            |  
|Traffic (year ended) (millions): |  |              |            |   |      |  |            |  
|Long distance minutes            |  |              | 5,760      |   |      |  | 5,495      |  
|Interconnection minutes          |  |              | 5,386      |   |      |  | 4,439      |  
|                                 |  |              |            |   |      |  |            |  
|Total minutes                    |  |              | 11,147     |   |      |  | 9,934      |  
|                                 |  |              |            |   |      |  |            |  
|Churn rate (year ended):         |  |              |            |   |      |  |            |  
|Fixed voice                      |  |              | 1.7        | % |      |  | 1.6        | %
|Broadband                        |  |              | 3.0        | % |      |  | 3.0        | %
|Pay TV                           |  |              | 2.3        | % |      |  | 2.0        | %



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##### Table of Contents

Services and Products

Wireless Services and Products

We offer wireless voice and data
services under a variety of plans to meet the needs of different user segments. The plans are either postpaid, where the customer is billed monthly for the previous month and may terminate the plan at any time, subject to certain
exceptions, or prepaid, where the customer pays in advance for a specified volume of use over a specified period.

We also offer international roaming services to our subscribers through the networks of cellular service providers with which we have
entered into international roaming agreements around the world, and we provide GSM and 3G roaming services to customers of our international roaming partners.

In connection with the provision of our voice services, we earn interconnection revenues from calls to any of our subscribers that originate with another service provider. We charge the service provider
from whose network the call originates an interconnection charge for the time our network is used in connection with the call. Similarly, we must pay interconnection fees in respect of calls made by our subscribers to customers of other service
providers.

We offer data services, including SMS, MMS, Premium SMS and Premium MMS, Mobile Entertainment Services, Data
Transmission, Internet Browsing and E-mail Services. We also offer a variety of products as complements to our wireless service, including handsets and smart phones and accessories such as chargers, headsets, belt clips, batteries, broadband cards
and netbooks. In addition, we offer other wireless services, such as Push-to-Talk Services.

Fixed Line Services and
Products

We offer fixed line voice services, including local and long-distance services, data services, including data
administration and hosting services, broadband services and Pay TV services to both corporate and residential customers under a variety of plans to meet the needs of different user segments.

Our Networks and Technology

In the Dominican Republic, our wireless
networks, which cover approximately 96% of the population, use CDMA, GSM and 3G technologies. In Jamaica, our wireless networks, which cover approximately 90% of the population, use CDMA technologies, and we are currently deploying GSM and 3G
technologies. In Puerto Rico, our wireless networks, which cover approximately 97% of the population, use CDMA, GSM and 3G technologies, and we are currently migrating our wireless customers from the CDMA network to newer networks. In the Caribbean,
our networks use POTS and Internet Protocol television (IPTV) technologies.

Competition

In the Dominican Republic, our principal wireless competitor is France Telecom (Orange); and Tricom is our principal fixed-line
competitor. Digicel and LIME Wireless are our principal Jamaican competitors. The Puerto Rican wireless market is highly competitive with AT&T, Sprint, T-Mobile and Open Mobile as our principal competitors. AT&T is the largest wireless
operator in Puerto Rico, where we hold a close second position. In the fixed-line business, our principal competitors in Puerto Rico are Centennial AT&T, Worldnet Communications and other competitive local exchange carriers that resell our
services. In March 2011, we entered into an agreement with Digicel to sell our operations in Jamaica to Digicel. Once the transaction closes, which is expected to occur during the second quarter of 2011, we will not compete with Digicel in Jamaica.



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##### Table of Contents

REGULATION

Mexico

Applicable Legislation

The General Communications Law, the Federal Telecommunications Law and regulations adopted under those statutes provide the general legal
framework for the regulation of telecommunications services in Mexico. The main objectives of the Federal Telecommunications Law are to promote the efficient development of the telecommunications industry, to encourage fair competition in the
provision of quality, low-priced services and to assure satisfactory breadth of coverage of the Mexican population.

Under the
Federal Telecommunications Law, an operator of public telecommunications networks, such as Telcel or Telmex, must operate under a concession granted by the SCT. Such a concession may only be granted to a Mexican citizen or corporation and may not be
transferred or assigned without the approval of the SCT. A concession to provide wireless services that utilize electro-magnetic frequencies generally has a term of up to twenty years and may be extended for additional terms of equal duration. A
concession to provide public fixed-line local and long-distance services generally has a term of up to 30 years and may be extended for additional 30-year terms. Operators of private networks that do not use electro-magnetic frequencies are not
required to obtain a concession to provide private telecommunications services but are required to obtain approval from the SCT.

The Federal Telecommunications Law requires public telecommunications concessionaires to establish open network architecture that permits interconnection and interoperability. Operators of private
networks that do not use electro-magnetic frequencies or provide services to the public are not required to obtain a concession, permit or registration.

Principal Regulatory Authorities

The SCT, through Cofetel, is the
government agency principally responsible for regulating telecommunications services. The SCTs approval is required for any change in the bylaws of a concessionaire. It also has broad powers to monitor compliance with concessions, and it can
require a concessionaire to supply the SCT with such technical, administrative and financial information as it may request. Telcel is required to publish its annual network expansion program and must advise the SCT of the progress of its expansion
and modernization program on a quarterly basis.

Cofetel is an independent agency within the SCT, with five commissioners
appointed by the President of Mexico, one of whom is appointed as chairman. Cofetels mandate is to regulate the Mexican telecommunications sector. Many of the powers and obligations of SCT under the Telecommunications Law and the
telecommunications regulations have been delegated to Cofetel.

The Telecommunications Law gives certain rights to the Mexican
government in its relations with concessionaires, including the right to take over the management of an operators networks, facilities and personnel in cases of imminent danger to national security, internal peace or the national economy,
natural disasters and public unrest. The Telecommunications Law also provides that at the expiration of a concession, the Mexican government has a right of first refusal to acquire the assets used directly in the exploitation of the concession. See
RegulationTermination of Concessions under this Item 4.

Telecommunications operators are also subject
to regulation by Profeco under the Federal Consumer Protection Law. This law regulates publicity, the quality of services and information required to be provided to consumers and provides a mechanism to address consumer complaints. Profeco has the
authority to impose fines, which can be significant.



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##### Table of Contents

Telcel Rates

The Telecommunications Law provides that wireless services concessionaires may freely determine the rates for telecommunications services,
including interconnection. Mobile rates are not subject to a price cap or any other form of price regulation. However, Telcel and other mobile carriers operating in Mexico are required to register their rates for mobile service with Cofetel prior to
implementing such rates. Cofetel is authorized to impose specific rate requirements on any operator that is determined to have substantial market power under the Federal Antitrust Law. Although Cofeco has determined that Telcel has substantial
market power in the nationwide market for voice services, we cannot predict what regulatory measures might be taken in response to Cofecos determination.

Telmex Rates

Under Telmexs concession, Telmexs rates in
any period for basic telephone services, including installation, monthly rent, measured local service and long-distance service, are subject to a ceiling on the price of a basket of such services weighted to reflect the volume of each
service provided by Telmex during the preceding period. There is also a price floor based on Telmexs average long-run incremental cost. Within this aggregate price range, Telmex is free to determine the structure of its own rates. Telmex must
get permission from Cofetel before its rates can take effect.

The price cap varies directly with the Mexican National
Consumer Price Index, permitting Telmex to raise nominal rates to keep pace with inflation (minus a productivity factor set for the telecommunications industry), subject to consultation with the Communications Ministry. Telmex has not raised its
nominal rates since March 2001 for local service and since March 1999 for long-distance service. Under the concession, the price cap is also adjusted downward periodically to pass on the benefits of Telmexs increased productivity to its
customers. The SCT sets a new periodic adjustment for every four-year period to permit Telmex to maintain an internal rate of return equal to its weighted average cost of capital. The SCT fixed the adjustment per quarter in nominal terms at 0.74%
for 2003-2006 and 0.84% for 2007-2010. For services extending beyond basic telephone service, the Telecommunications Law and the Telmex concession permits Telmex, under certain conditions and subject to registration with Cofetel, to set
Telmexs prices free of rate regulation. These services include data transmission, directory services and services based on digital technology, such as caller ID, call waiting, speed dialing, automatic redialing, voice mail, as well as
three-way conference and call transfer.

Calling Party Pays

In Mexico, calls to and from Telcels mobile subscribers are subject to the calling party pays system, under which
subscribers only pay for outgoing calls. Subscribers have the option of retaining the mobile party pays system. Mobile operators do not charge airtime fees to customers receiving calls, except for roaming fees applicable when subscribers
receive calls outside their local areas. Two long-distance carriers, Axtel and Avantel, have challenged the validity of the long distance calling party pays system through judicial proceedings and are operating under a court order obtained in those
proceedings that temporarily suspends the application to them of the calling party pays system.



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##### Table of Contents

Telcel Concessions

Telcel operates under several different concessions covering particular frequencies and regions, holding an average of 72.8 MHz of
capacity in Mexicos nine regions in the 850 MHz, 1900 MHz and 1.7/2.1 GHz spectrum. The following tables summarize Telcels concessions.



|                 |  |                   |  |                  |  |                 |            |  |               |             |                 |           |                  |           |               |                   
|---------------- |  | ----------------- |  | ---------------- |  | --------------- | ---------- |  | ------------- | ----------- | --------------- | --------- | ---------------- | --------- | ------------- | ------------------
|Regions inMexico |  | Band A (1900 MHz) |  | Band B (850 MHz)
|Cel              |  | PCS               |  | Concession
Date  |  | TerminationDate |            |  | Fee Structure |             | Concession
Date |           | Termination
Date |           | Fee Structure
|I                |  | I                 |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Aug. 1991 |                  | Aug. 2011 |               | Semiannual fees(1)
|II               |  | II                |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Aug. 1991 |                  | Aug. 2011 |               | Semiannual fees(1)
|III              |  | III               |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Aug. 1991 |                  | Aug. 2011 |               | Semiannual fees(1)
|IV               |  | IV                |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Aug. 1990 |                  | Aug. 2010 |               | Annual fees(2)    
|VIII             |  | V                 |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Aug. 1990 |                  | Aug. 2010 |               | Annual fees(2)    
|V                |  | VI                |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Oct. 1991 |                  | Oct. 2011 |               | Semiannual fees(1)
|VI               |  | VII               |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Oct. 1991 |                  | Oct. 2011 |               | Semiannual fees(1)
|VII              |  | VIII              |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Oct. 1991 |                  | Oct. 2011 |               | Semiannual fees(1)
|IX               |  | IX                |  | Sept. 1999       |  |                 | Sept. 2019 |  |               | Upfront fee |                 | Oct. 2000 |                  | Oct. 2015 |               | Upfront fee       



|(1) | The semi-annual fees, or aprovechamientos, are determined as a percentage of gross revenues corresponding to the concession.
|--- | ----------------------------------------------------------------------------------------------------------------------------

|(2) | The annual fees, are amounts payable set forth by the Ley Federal de Derechos and vary depending on the relevant region and radio spectrum band
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------



|                 |  |                  |           |  |                   |           |               |  |             |                 |  |                  |  |               |  |               
|---------------- |  | ---------------- | --------- |  | ----------------- | --------- | ------------- |  | ----------- | --------------- |  | ---------------- |  | ------------- |  | --------------
|Regions inMexico |  | Band D (1900MHz) |           |  | Band F (1900 MHz)
|PCS              |  | ConcessionDate   |           |  | Termination
Date  |           | Fee Structure |  |             | Concession
Date |  | Termination
Date |  | Fee Structure
|I                |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|II               |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|III              |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|IV               |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|V                |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|VI               |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|VII              |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|VIII             |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)
|IX               |  |                  | Oct. 1998 |  |                   | Oct. 2018 |               |  | Upfront fee |                 |  | April 2005       |  | April 2025    |  | Annual fees(1)



|(1) | The annual fees, are amounts payable set forth by the Ley Federal de Derechos and vary depending on the relevant region and radio spectrum band.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------



|                 |  |                                                                            |           |  |                 |  |           |               |  |  |             |    
|---------------- |  | -------------------------------------------------------------------------- | --------- |  | --------------- |  | --------- | ------------- |  |  | ----------- | ---
|Regions inMexico |  | 1.7/2.1 GHz Bands B2, C (nationwide) and
D(only in PCS Regions 1, 5 and 8) |          
|PCS              |  | ConcessionDate                                                             |           |  | TerminationDate |  |           | Fee Structure | 
|I                |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|II               |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|III              |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|IV               |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|V                |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|VI               |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|VII              |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|VIII             |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)
|IX               |  |                                                                            | Oct. 2010 |  |                 |  | Oct. 2030 |               |  |  | Annual fees | (1)



|(1) | The annual fees, are amounts payable set forth by the Ley Federal de Derechos and vary depending on the relevant region and radio spectrum band. The payment of
these fees will start in June 2012.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

In addition to the 850 MHz, 1900 MHz and 1.7/2.1 GHz concessions detailed in the tables
above, in December 2002, the SCT granted Telcel a concession to install and operate a telecommunications network to provide national and international long distance services, as well as data transmission services. The concession was granted for an
initial term of 15 years, and it is subject to extension for an additional 15-year period. The concession limited Telcels ability to provide these services, permitting it to provide them only to its wireless subscribers until December 2005. In
2006, Telcel completed the build out of its long distance network, which allows Telcel to carry all the national long distance traffic originated from Telcels customers to other customers. Also, since May 2007, Telcel opened its
interconnection with the local network of Telmex in Mexico City and with the long distance network of AT&T.

Concession
Fees

Notwithstanding the upfront payment applicable to all the 1900 MHz concessions, 1.7/2.1 GHz concessions and for the
renewal of the eight 850 MHz concessions, there are two different types of fees that we may be required to pay in connection with Telcels concessions.

Aprovechamientos.Some of Telcels 850 MHz concessions (cellular regions I, II, III, VI, VII and VIII) require Telcel to pay semi-annual fees (aprovechamientos)
equal to a percentage of gross revenues derived from the concessioned services. The percentage ranges between 6% and 8%. These fees are payable through 2011, at which time the renewal of the concessions will become effective and payment of any
further semi-annual fees will cease and payment of annual fees (derechos) will commence. For the Region IX Band B concession, these semi-annual fees were eliminated pursuant to a court decision.

Derechos.Owners of concessions granted or renewed on or after January 1, 2003 are required to pay
annual fees (derechos) for the use and exploitation of radio spectrum bands. The amounts payable are set forth by the Ley Federal de Derechos and vary depending on the relevant region and radio spectrum band. These annual fees apply to
all spectrum bands, including those that are already subject to the payment of fees (aprovechamientos) based on gross revenues. Currently, Telcel is not required to pay these fees in respect of its Bands A, B and D concessions since they were
awarded prior to 2003, but it is required to pay them in respect of additional 10 MHz of capacity in the 1900 MHz spectrum (Band F) acquired in 2005.

Fees of this type do not apply to the 1900 MHz (Band D) concessions, which Telcel purchased for a fixed amount in 1998, and the 1900 MHz (Band A) concessions, which Telcel acquired from Unefon.

Expansion, Modernization and Service Quality Requirements

Telcels concessions impose a number of requirements for expansion and modernization of its network. The concessions establish
certain minimum network capacities that Telcel must achieve, to extend service coverage to a targeted percentage of population. Telcel is in compliance with these requirements.

The concessions also set forth extensive requirements for the quality and continuity of Telcels service, including, in some cases,
maximum rates of incomplete and dropped calls and connection time. In May 2003, Cofetel issued the Fundamental Technical Plan for Quality of Local Mobile Services Networks, applicable to all operators, including Telcel, which imposes additional
service quality requirements. We are in compliance with the service quality requirements of our concessions and the Technical Plan.

Renewal

The eight Band B concessions covering regions other than the
Mexico City area were granted for initial terms of twenty years. Concessions covering regions 4 and 5 expired in 2010, whereas concessions covering regions 1,2,3,6,7 and 8 will expire in 2011. During the first quarter of 2010, the SCT recognized
Telcels right to renew, for additional 15-year terms, its 8 Band B concessions, covering all regions other than the Mexico City area and requested Telcel accept terms and conditions of the concessions, including the payment of annual fees
(derechos) during the term of the concession, and pay an upfront fee of Ps. 74.8 million. Telcel has accepted the terms and conditions determined by SCT and paid the upfront fee.



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The Band B concession covering the Mexico City area (Region 9) was renewed effective October
2000 for a term of fifteen years that will expire in October 2015. On April 20, 2010, Telcel requested renewal of the Band B concession covering the Mexico City area (Region 9). The Band D concessions will expire in 2018, the Band A
concessions in 2019 and the Band F concessions in 2025. All of these concessions are subject to renewal for additional 20-year terms. In October 2010, Mexican regulation entities granted Telcel a nationwide 1.7/2.1 GHz concession for a 20
year term.

Telmex Concessions

Under the Telecommunications Law and the telecommunications regulations, Telmexs concession was granted in 1976 and amended in August 1990. Currently set to expire in 2026, Telmexs concession
may be extended for an additional 15-year term subject to additional requirements that the SCT may impose. Thereafter, it may be renewed for successive 30-year terms as provided under the Telecommunications Law. Telmexs subsidiary,
Teléfonos del Noroeste, S.A. de C.V. (Telnor), holds a separate concession in a region located in two states in northwestern Mexico, which will also expire in 2026 and may be extended for an additional 15-year term thereafter. The
material terms of the Telnor concession are essentially the same as the terms of the Telmex concession.

In addition, Telmex
currently holds concessions for the use of frequencies to provide wireless local access and point-to-point and point-to-multipoint transmission, which Telmex obtained from Cofetel through a competitive bidding process. These concessions are granted
for a term of up to 20 years and may be extended for additional 20-year terms.

The General Communications Law provides that
upon the expiration of the Telmex concession the Mexican government is entitled to purchase its telecommunications assets at a price determined on the basis of an appraisal by a public official, and the telecommunications regulations provide that
upon expiration of the concession, the Mexican government has a right of first refusal to acquire Telmexs telecommunications assets. However, the General Communications Law also provides that in certain cases, upon expiration of the concession
Telmexs telecommunications assets will revert to the Mexican government free of charge. There is substantial doubt as to how these provisions of the General Communications Law and the telecommunications regulations would be applied, and
accordingly there can be no assurance that upon expiration of the concession Telmexs telecommunications assets would not revert to the Mexican government free of charge.

Termination of Concessions

The General Communications Law, the
Telecommunications Law and the concessions include various provisions under which the concessions may be terminated before their scheduled expiration dates. Under the Telecommunications Law, the SCT may cause early termination of any of the
concessions in certain cases, including:



| |  |  | failure to exercise rights under a concession during the 180 days after that concession is granted;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | failure to expand telephone services at the rate specified in the concession;
| | - |  | -----------------------------------------------------------------------------



| |  |  | interruption of all or a material part of the services provided by the concessionaire;
| | - |  | --------------------------------------------------------------------------------------



| |  |  | acts by the concessionaire with the effect of impeding the operations of other concessionaires;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | refusing interconnection arrangements with other concessionaires;
| | - |  | -----------------------------------------------------------------



| |  |  | change of jurisdiction by the concessionaire;
| | - |  | ---------------------------------------------



| |  |  | transfer, assignment of, or grant of liens to, the concessions or any asset used to provide service without SCTs approval;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------



| |  |  | failure to pay certain government fees;
| | - |  | ---------------------------------------



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| |  |  | violation of the prohibition against ownership of shares of the concessionaire by foreign states;
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | any material modification of the nature of the concessionaires services without prior SCTs approval; and
| | - |  | ----------------------------------------------------------------------------------------------------------



| |  |  | breach of certain other obligations under the General Communications Law.
| | - |  | -------------------------------------------------------------------------

In addition, the concessions provide for early termination by the SCT following administrative proceedings in the event of:



| |  |  | a material and continuing violation of any of the conditions set forth in the concessions;
| | - |  | ------------------------------------------------------------------------------------------



| |  |  | material failure to meet any of the service expansion requirements under the concessions;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | material failure to meet any of the requirements under the concession for improvement in the quality of service;
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | engagement in any telecommunications business not authorized under the concession and requiring prior approval of the SCT;
| | - |  | --------------------------------------------------------------------------------------------------------------------------



| |  |  | following notice and a cure period, failure without just cause to allow other concessionaires to interconnect; or
| | - |  | -----------------------------------------------------------------------------------------------------------------



| |  |  | bankruptcy of the concessionaire.
| | - |  | ---------------------------------

The General Communications Law and all but one of Telcels 850 MHz concessions provide that in the event of early termination of our concessions, all assets that are the subject of such concession
would revert to the Mexican government without compensation. In the event of early termination of any of Telcels PCS concessions, the Mexican government would have the option to purchase the equipment, installations and other assets used
directly for the exploitation of the frequencies which are the subject of such concession. The latter regime also applies to one of Telcels 850 MHz concessions.

Competition

The telecommunications regulations and the concessions
contain various provisions designed to introduce competition in the provision of communications services. In general, the SCT is authorized to grant concessions to other parties for the provision of any of the services provided by Telcel and Telmex
under the concessions.

Of particular importance for Telmex is the fact that Mexican authorities have adopted regulations to
permit cable television providers to provide voice-transmission services to local fixed-line telecommunications operators and data and broadband Internet access services to the Mexican public. As of December 31, 2010, 32 cable television
providers, through more than 300 concessions, have been authorized to provide local fixed-line voice-transmission service in various cities in Mexico. Regulations have also been adopted to allow other local telephone service providers to provide
paid television and audio services, but to date Telmex has been unable to obtain authorization to do so.

Mexican
Regulatory Proceedings

Telcel Antitrust Investigations

The Telecommunications Law authorizes Cofetel to impose specific requirements as to rates, quality of service and information on any
wireless operator that is determined by Cofeco to have substantial power in a specific market according to the Federal Antitrust Law. Pursuant to the Telecommunications Law, Cofetel has the power to adopt specific regulations on rates, quality of
service, disclosure of information or other special regulations.

Following Cofeco investigations into monopolistic practices
in the telecommunications sector, Cofeco notified Telcel of a resolution imposing a fine of Ps. 11,989 million for alleged monopolistic practices in April



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2011. We and Telcel are evaluating the scope and legal grounds of the resolution and will exercise any and all legal actions or remedies to challenge it. Cofeco is conducting additional
investigations into the market power of Telcel in the telecommunications sector. Depending on the resolution of these investigations, they may result in new regulations applicable to Telcel. See Note 17 to our audited consolidated financial
statements included in this annual report.

Telmex Antitrust Investigations

Beginning 2007, the Cofeco began eight industry-wide investigations into market power and monopolistic practices in certain segments of
the Mexican telecommunications market in which Telmex operates. In four of these investigations, final resolutions have concluded that Telmex and its subsidiary, Telnor, have substantial power in the relevant markets investigated. Based on these
final resolutions, Cofetel could impose specific tariff requirements or other special regulations such as additional requirements regarding disclosure of information or quality of service. Telmex has filed petitions for constitutional protection
(amparo) to challenge these resolutions, all of which are pending.

Of the four remaining cases relating to
monopolistic practices, two remain under investigation and in the other two Cofeco has issued a notice of probable fault (Oficio de Probable Responsabildad), to which Telmex has objected. Findings adverse to Telmex in any of the Competition
Commission proceedings may lead to the imposition of additional regulations, prohibitions or monetary penalties. See Note 17 to our audited consolidated financial statements included in this annual report.

Mobile Termination Rates

Under the calling party pays system, when the customer of one operator (local or long-distance) places a call to a customer of another operator, the first operator pays the second a fee, which is referred
to as an interconnection fee. Under Mexican law, interconnection fees are negotiated between operators. For some periods, we have been unable to reach agreement on fees with some operators, and operators that are unable to agree have sought the
intervention of Cofetel to establish interconnection fees. Our interconnection agreements with each operator require us to offer that operator the best rates we offer to other similar operators, and as a result if a single operator obtains a more
favorable rate through a final, non-appealable resolution or decision from Cofetel, the SCT or the courts, we may be required to offer that rate to other operators even though we have previously agreed with them on rates. There has been extensive
controversy in Mexico concerning the mobile termination rates payable to mobile operators for periods beginning with 2005. See Note 17 to our audited consolidated financial statements included in this annual report.

We expect that mobile termination rates will continue to be the subject of litigation and administrative proceedings. We cannot predict
when or how these matters will be resolved. The competitive and financial effects of any resolution could be complex and difficult to predict. Although the matters in dispute primarily concern certain operators, if those matters are resolved
adversely to us through a final, non-appealable resolution or decision from Cofetel, SCT or the courts, the impact could be material because Telcel would be required to offer to the other operators any more favorable fees it is required to provide
to these operators as of the date of such final, non-appealable resolution or decision. This could materially reduce Telcels mobile termination revenues in future periods. Also, depending on how the disputes are resolved, there could be
contractual claims among dissenting operators and Telcel for reimbursement or payment, as the case may be, of amounts paid or owed between Telcel and such dissenting operator, in respect of time periods from 2005 to 2011. Recently the Mexican
Supreme Court of Justice ruled that lower courts may not grant temporary injunctive relief suspending the application of interconnection tariffs set by Cofetel. The ruling will eliminate the ability of an operator to obtain judicial suspensions
against interconnection rulings issued by Cofetel. Operators will continue to have the ability to challenge interconnection resolutions issued by Cofetel, but such resolutions will not be stayed pending final resolution by the courts. All
proceedings initiated by Telcel in the past against interconnection rulings issued by Cofetel will continue their course. We expect that mobile termination rates will continue to be the



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##### Table of Contents

subject of litigation and administrative proceedings. We cannot predict when or how these matters will be resolved. Although the matters in dispute primarily concern certain operators, pending a
final resolution from the courts and given the inability to suspend Cofetels interconnection resolution, operators interconnected to Telcels network may elect to pay Telcel the reduced fees resolved by Cofetel. Each operator will make
its own determination on how to allocate risks associated with such legal proceedings.

Mobile Telephone National User
Registry

In February 2009, the Federal Telecommunications Law was amended in order to create the Mobile Telephone National
User Registry (Registro Nacional de Usuarios de Telefónia Móvil, or RENAUT). Under the amendment, operators must maintain a registry including the identity of all their subscribers and a ledger of all communications
made by each users line as well as provide to the relevant authorities information obtained. Among other provisions, the amendment establishes that users who purchased a mobile line after April 10, 2009 (date when the amendment became
effective), could not use it until they register their line with the RENAUT. Likewise, the amendment establishes that existing users as of the date on which the amendment became effective had a one-year term to register the mobile telephone line.
Consequently, lines that were not registered as of April 10, 2010 were to be suspended without a reactivation right by operators. Pursuant to regulations issued by Cofetel, Telcel has complied with the line and communication registry as well as
the information provision processes.

Notwithstanding the foregoing and solely for purposes of protecting its subscribers from
the suspension ordered by the amendment, Telcel began a judicial proceeding (juicio de amparo) against certain provisions of the Federal Telecommunications Law. The enforceability of the relevant provisions of the amendment has been stayed by
a court order. In February 2011, the trial court dismissed Telcels claim for lack of subject matter. In March 2011, Telcel filed an appeal (recurso de revisión) before the appellate court that preserves the stay
(suspensión) previously granted. We expect final resolution of the challenge during 2011.

Telcel continues to
fulfill all actions required in connection with the registry of its subscribers (both new and preexisting) and of their communications as well as the information provision process in compliance with the rules issued by Cofetel to comply with the
Federal Telecommunications Law.

On April 29, 2011, the Mexican Congress approved a law under which the amendments to the
Federal Telecommunications Law which created the RENAUT were annuled. This law will only become effective upon its publication in the Official Gazette, which we expect to occur during the second quarter of 2011.

Brazil

Legislation and Principal Regulatory Authorities

The Brazilian Telecommunications Law (Lei Geral das Telecomunicações Brasileiras) provides a framework for telecommunications regulation. The primary regulator of our Brazilian
subsidiaries is Anatel. Anatel also has the authority to grant concessions and licenses for all telecommunications services, except for broadcasting services. Anatel has the authority to propose and issue regulations that are legally binding on
telecommunications services providers. Any proposed regulation of Anatel is subject to a period of public comment, which may include public hearings. Anatels actions may ultimately be challenged in Brazilian courts.

Taxes and duties on telecommunications services

The principal tax imposed on telecommunications services is a state-level value-added tax, the Imposto sobre Circulação de Mercadorias e Serviços (ICMS). Each
Brazilian state imposes its own tax rate on gross revenues derived from telecommunications services, which varies from state to state and averages 26%.

The principal federal taxes collected on gross revenues include:



| |  |  | Programa de Integração Social(PIS).PIS contributions are applied at a rate of 0.65% on gross revenues derived
from telecommunications services.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

| |  |  | Contribuição para Financiamento da Seguridade Social(COFINS).COFINS contributions are applied at a rate of
3.0% on gross revenues derived from telecommunications services.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The principal taxes collected on net
revenues include:



| |  |  | Fundo de Universalização dos Serviços de Telecomunicações (FUST) and Fundo para o
Desenvolvimento Tecnologico das Telecomunicações (FUNTTEL) taxes. These taxes are applied at a rate of 1% and 0.5% of net revenues, respectively.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Concession fee. Embratel is required to pay a fee every two years during the term of concessions equal to 2% of the revenues from switched fixed
telephone services, net of taxes and social contributions, for the year preceding the payment.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Rates

Anatel regulates rates for telecommunications services.

PCS Licenses Rates

In general, PCS licensees are authorized to increase basic plan rates only for inflation (less a factor determined by Anatel based on the productivity of each operator during the year) and on an annual
basis. However, operators are allowed to create non-basic plans (known as alternative plans) and modify them without prior Anatel approval. Discounts from existing service plans, both basic and non-basic, are allowed without Anatel approval.

Fixed-Line Services Rates

Embratels concession for both domestic long-distance and international long-distance service permits it to set its own rates in accordance with an annual rate adjustment mechanism established by
Anatel. The rate adjustment is determined based on inflation and productivity across the Brazilian telecommunications industry and sets the average percentage increase or decrease for the basket of all basic long-distance rates.

The tariff structure for domestic long-distance calls is established by Anatel and is uniform throughout Brazil. There are currently 16
domestic long-distance tariffs, based on combinations of four distance categories and four day/time categories. Embratel sets its basic domestic long-distance rates each year based primarily on the rate adjustment mechanism Anatel imposes on all
operators. Rates charged for outgoing international calls vary depending on the time of the day and the day of the week when a call is made, the duration of the call, the country of destination and whether special services, such as operator
assistance, are used.While these long-distance rates apply to basic plan customers, Embratel has a variety of promotional and customer retention programs that enable many of its customers to obtain long-distance packages that may include lower rates
and/or subscription fees.

The majority of Embratels long-distance voice services customers are not
pre-subscribed. In other words, customers do not register with Embratel before it begins providing services to them. Instead, each time a customer initiates a long-distance domestic or international call from either a fixed or a mobile
terminal, the customer chooses whether to use Embratels services by dialing the 21 selection code or to use the services of another service provider by dialing a different code.

Embratel also provides local telephony services. Rates charged for local calls vary by product and can be created by Embratel without
prior Anatel approval. Discounts from existing service plans, both basic and non-basic, are allowed without Anatel previous approval.



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##### Table of Contents

Data Services Rates

Data transmission rates are not regulated.

Co-location

Co-location allows a party requesting interconnection
to place its switching equipment in or near the local exchange of the network operator whose network the requesting party wishes to use and may connect to the network at this point of presence. Co-location arrangements are currently negotiated
directly by the parties. Current regulations require operators to permit co-location of network elements and services, but do not specify which network elements and services are to be co-located or how co-location should occur.

General Regulatory Plan

Anatel approved the General Regulatory Plan (Plano Geral de Atualização da Regulamentação, or PGR) in October 2008 to serve as a framework to develop public
telecommunications policies for a period of ten years. The PGR included Anatels plans to regulate Mobile Virtual Network Operators (MVNO) practices, expand broadband services to rural and low-income areas and implement rules
related to fixed incumbents infrastructure usage within the next two years and implement a revision of the rules related to the size of the areas where the service is considered to be local. Anatel published the regulation of MVNO in November 2010.
The primary goal of MVNO regulation is to increase competition in the mobile industry by allowing existing operators and new companies to target more efficiently specific market segments or geographical regions.

General Plan of Awards

A General Plan of Awards (Plano Geral de Outorgas, or PGO) was adopted in November 2008. The new PGO established rules concerning the geographic division of the country and the
acquisition of new licenses to enhance competition in the fixed switch telephony service market. The new PGO rules also loosened restrictions on the transfer of concessions for long-distance and local services.

Concessions

Our Brazilian wireless subsidiaries hold authorizations to provide services under the PCS (Serviço Móvel Pessoal) regime in the 850 Mhz, 900 MHz, 1,800 MHz, 1,900 MHz and 2,100 MHz
spectrum. These authorizations are valid for 15 years and may be extended for additional 15-year terms, upon the payment of a biannual fee equal to 2% of net revenue, except for the final year of the 15-year term, in which the fee equals 1% of net
revenue. Our Brazilian subsidiaries expect to continue to acquire spectrum so as new Anatel conducts additional auctions.



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The following table sets forth the regions in Brazil in which our Brazilian subsidiaries
hold authorizations to provide wireless services, as well as the termination dates of such authorizations:



|                                 |  |                   |  |               |  |                 |  |           
|-------------------------------- |  | ----------------- |  | ------------- |  | --------------- |  | ----------
|Regions in Brazil                |  | Termination Dates
|                                 |  | 850 MHz           |  | 900 MHz       |  | 1800 e 1900 MHz |  | 3G        
|Bahia                            |  |                  |  | December 2017 |  | December 2017   |  | April 2023
|Sergipe                          |  |                  |  | December 2017 |  | December 2017   |  | April 2023
|Alagoas                          |  | August 2012       |  | August 2012   |  | August 2012     |  | April 2023
|Ceara                            |  | August 2012       |  | August 2012   |  | August 2012     |  | April 2023
|Piauí                            |  | August 2012       |  | August 2012   |  | August 2012     |  | April 2023
|Pernambuco                       |  | August 2012       |  | August 2012   |  | August 2012     |  | April 2023
|Rio Grande do Norte              |  | August 2012       |  | August 2012   |  | August 2012     |  | April 2023
|Paraná                           |  |                  |  | December 2017 |  | December 2017   |  | April 2023
|Paraná (Norte)                   |  |                  |  | December 2022 |  | December 2022   |  | April 2023
|Santa Catarina                   |  |                  |  | December 2017 |  | December 2017   |  | April 2023
|Rio de Janeiro                   |  | April 2013        |  | April 2013    |  | April 2013      |  | April 2023
|Espírito Santo                   |  | April 2013        |  | April 2013    |  | April 2013      |  | April 2023
|Rio Grande do Sul                |  | April 2013        |  | April 2013    |  | April 2013      |  | April 2023
|São Paulo - Capital              |  | August 2012       |  | August 2012   |  | July 2012       |  | April 2023
|São Paulo - Interior             |  | March 2013        |  | March 2013    |  | March 2013      |  | April 2023
|Minas Gerais                     |  |                  |  | April 2020    |  | April 2020      |  | April 2023
|Minas Gerais (Triângulo Mineiro) |  |                  |  |              |  |                |  | April 2023
|Amazonas                         |  |                  |  |              |  | December 2022   |  | April 2023
|Maranhão                         |  |                  |  |              |  | December 2022   |  | April 2023
|Roraima                          |  |                  |  |              |  | December 2022   |  | April 2023
|Amapá                            |  |                  |  |              |  | December 2022   |  | April 2023
|Pará                             |  |                  |  |              |  | December 2022   |  | April 2023
|Distrito Federal                 |  | July 2012         |  | July 2012     |  | July 2012       |  | April 2023
|Mato Grosso do Sul               |  | July 2012         |  | July 2012     |  | July 2012       |  | April 2023
|Goiás                            |  | July 2012         |  | July 2012     |  | July 2012       |  | April 2023
|Tocantins                        |  | July 2012         |  | July 2012     |  | July 2012       |  | April 2023
|Mato Grosso                      |  | July 2012         |  | July 2012     |  | July 2012       |  | April 2023
|Rondônia                         |  | July 2012         |  | July 2012     |  | July 2012       |  | April 2023
|Acre                             |  | July 2012         |  | July 2012     |  | July 2012       |  | April 2023

Other
Licenses

Embratel holds a domestic long-distance concession and an international long-distance concession, which were
granted on December 22, 2005 and will expire on December 31, 2025. Anatel ́s regulation establishes a possible revision every five years to take into account new conditions and the reconsideration of service obligation and quality
targets. It also holds authorizations to provide local service for an indefinite term. Its authorization to provide DTH satellite television services was granted by Anatel in May 2008 for Embratel TV SAT and will expire in 2023, though it can be
renewed for additional 15 year terms.

Our Brazilian satellite subsidiary Star One holds authorizations for C-band frequencies
for satellites C-1, C-2, B-2 and B-4, which were renewed for 15-year terms in December 2005. Star Ones authorizations to operate in the Ku-band frequencies for satellites C-1 and C-2 were granted in 2003, and each has a 15-year term. Anatel
also granted Star One 15-year authorizations for operation in both the Ku-band and C-band frequencies for satellites B-1 and B-3 in 2007.

Embratel also holds a data services license to operate Multimedia Communication Service domestically and internationally for an indefinite term throughout the country.



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Concession Fees

Embratel is required to pay a fee every two years during the term of its concession equal to 2% of the revenues from switched fixed
telephone services, net of taxes and social contributions, for the year preceding the payment.

Expansion, modernization
and service quality requirements

Telecommunications providers are subject to universal service requirements and
quality targets under their concessions and the General Plan of Quality Goals (PGMQ) and General Plan of Telephony Universalization Goals (PGMU). The PGMQ sets forth a series of service quality obligations that are
incorporated into the concessions. Failure to fulfill quality of service obligations can lead to the imposition of fines and penalties by Anatel. There are a variety of external factors that may impede our ability to fulfill those obligations.
Because our network connects with those of regional fixed-line operators, regional cellular operators and foreign operators, the quality of service we provide may also be significantly affected by the quality of the networks on which calls originate
or terminate. Anatels regulations provide for possible revision every five years to take into account changed conditions and to reconsider universal service obligations and quality targets. Anatel began a process of public comment in 2009 to
revise the terms of Embratels long distance services concessions, as well as the PGMQ and the PGMU.

Wireless
Interconnection Fees

Currently, wireless operators determine interconnection fees by agreement, subject to Anatel
intervention only in case of disputes. On February 2005, Anatel commenced an arbitration proceeding against all mobile and fixed line operators in Brazil regarding the inflation adjustment applied by operators on the interconnection fees. The
operators agreed on an interim price adjustment of 4.5% on mobile interconnection fees, which Anatel confirmed in 2009. From 2007 to 2008, Claro entered into agreements with major mobile and some fixed operators in Brazil establishing
interconnection fees.

In 2009, interconnection fees were submitted to investigation by the Economic Defense Department under
the allegation of price squeeze.

In the auction rules for 3G licenses published in 2007, it was established that, by October
2009, all service authorizations terms should be unified under three major areas. In 2010, pursuant to a negotiation process ordered byAnatel, Claro came to an agreement with most of fixed and mobile operators to use an average interconnection rate.
However, Claro was unable to reach an agreement with other operators, which has resulted in an ongoing arbitration process before Anatel. If the rates determined in that arbitration process are different from the one Claro has agreed to with most
operators, Claro may suffer a financial impact.

In 2005, Anatel defined a series of cost-based methods, including the fully
allocated cost methodology, for determining interconnection fees charged by operators belonging to an economic group with significant market power. Anatel has proposed that an economic group with more than 20% of market share will be considered to
have significant market power for this purpose. Under this proposal, Claro would be an economic group with significant market power.Anatel has not published all of the applicable regulations, but in 2010 the International Telecommunications Union
and Anatel commenced the auction process to select the consulting firm that is going to analyze and implement the cost-based methodology that expected to take effect in 2011. When these methods are ultimately implemented and if Claro is deemed to be
an economic group with significant market power, the revenues and results of operations of our Brazilian operations may be affected.

Fixed Line Interconnection Fees

Fixed line operators may freely
negotiate interconnection rates, subject to a price cap established by Anatel. However, if an operator offers an interconnection tariff below the price cap to another operator, it must offer that price to any other operator that requests it.



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Southern Cone

Argentina

The main telecommunications regulatory authorities in
Argentina are the Communications Ministry (Secretaría de Comunicaciones) and the National Communications Commission (Comisión Nacional de Comunicaciones), both of which are under the authority of the Ministry of Federal
Planning, Public Investment and Services of the National Government.

AMX Argentina holds licenses covering the entire
Argentine territory. These licenses contain coverage, reporting and service requirements, but do not have a fixed expiration date. The Communications Ministry is in charge of supervising the telecommunications industry in Argentina. It is authorized
to foreclose and sell the shares of a licensee in case of specified breaches of the terms of a license.

During 2010, the
Communications Ministry issued Resolution 98/2010 setting rules for the implementation of number portability, which is expected to begin in December 2011.

In the second half of 2006, Telmex Argentina began renegotiating the conditions of its interconnection contracts with the incumbent operators in Argentina, Telefónica de Argentina S.A. and Telecom
Argentina S.A. These contracts regulate the terms and conditions of interconnection for local and domestic and international long-distance telephony between telecommunications operators. Telmex Argentina has made a request to the Communications
Ministry to make a determination as to interconnection rates. However, Telmex Argentina has separately been negotiating with other operators to resolve this issue. In the event an agreement is reached, Telmex Argentina and the operators it is
negotiating with will voluntarily terminate all pending interconnection regulatory proceedings.

Pursuant to Decree 558/08 all
telecommunications providers, including AMX Argentina and Telmex Argentina must contribute 1% of their monthly revenues, determined after certain deductions, to the Universal Fund (Fondo Fiduciario del Servicio Universal) to finance the
provision of telecommunication services in underserved areas and to underserved persons.

Chile

The General Telecommunications Law of 1982, as amended, established the legal framework for the provision of telecommunications services
in Chile. The law established the rules for granting concessions and permits to provide telecommunications services and for the regulation of rates and interconnection. The main regulatory agency of the Chilean telecommunications sector is the
Chilean Transportation and Communications Ministry (Ministerio de Transportes y Telecomunicaciones), which acts primarily through the Undersecretary of Telecommunications.

Claro Chile holds a concession covering the entire Chilean territory. The concession was awarded in June 1997 and covers a 30-year
period. The concession contains coverage, reporting and service requirements. The Chilean Transportation and Communications Ministry is authorized to foreclose and sell the shares of a concessionaire in case of specified breaches of the terms of the
concession.

In May 2006, Claro Chile acquired from Telefónica Móviles a concession for the use of 25 MHz within
the 850 MHz frequency, which permits Claro Chile to increase the wireless services it provides. The term of this concession is for a 25-year period for the Metropolitan area and Region V and for an indefinite period for the rest of Chile.

Our subsidiaries have the right to use licenses to provide local fixed and wireless service through the 50 MHz of the 3.4 to
3.6 GHz frequency band throughout the country, domestic and international long-distance service, data services, Internet access, pay television services and value-added services.



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Mobile and fixed number portability regulation is being currently enacted and is expected to
be implemented in 2011.

Paraguay

The National Telecommunications Commission of Paraguay (Comisión Nacional de Telecomunicaciones de Paraguay) is in charge of supervising the telecommunications industry in Paraguay. It is
authorized to cancel licenses in case of specified breaches of the terms of a license.

AMX Paraguay holds a nationwide PCS
1900 spectrum license for a five-year term starting on January 26, 2009. AMX Paraguay also holds an Internet Access license covering the entire territory for a 5-year period starting on December 19, 2007. In November 2010, AMX Paraguay
received license for a five year term to provide residential TV services. The licenses are renewable, subject to regulatory approval, and contain coverage, reporting and service requirements. In December 2010, the National Telecommunications
Commission of Paraguay approved the regulation for number portability, which is expected to be implemented in December 2011.

Uruguay

The Regulatory Unit of Communications Services (Unidad Reguladorada de Servicios de Comunicaciónes) is in charge of supervising the telecommunications industry in Uruguay. In June 2004, we
acquired a 20-year license to operate three broad-band PCS frequencies in Uruguay.

Colombia and Panama

Colombia

The Ministry of Communications and the CRC are responsible for regulating and overseeing the telecommunications sector, including cellular operations. In addition, the main telecommunications regulatory
authority in Colombia with respect to cable and broadcast television is the National Television Commission (Comisión Nacional de Televisión). The Ministry of Communications, which granted the cellular concessions in 1994,
supervises and audits the performances of the concessionaires legal and contractual obligations. The activities of Comcel are also supervised by the Colombian Superintendency of Industry and Commerce (Superintendencia de Industria y
Comercio), which enforces antitrust regulations, promotes free competition in the marketplace and protects consumer rights.

In September 2009, the CRC issued a series of resolutions stating that Comcel has a dominant position in Colombias market for
outgoing mobile services. Under Colombian law, a market participant is considered to have a dominant position in a specified market if there is a substantial difference between that market participants traffic, revenues and subscriber base and
its competitors traffic, revenues and subscriber base. The resolutions also included regulations that would require Comcel to charge rates (excluding access fees) for mobile-to-mobile calls outside the Comcel network (off net) that
are no higher than the fees charged for mobile-to-mobile calls within the Comcel network (on net) plus access fees. The regulations, which limit Comcels flexibility in offering pricing plans to its customers, were first implemented
on December 4, 2009. As of the date of this annual report, the CRC is evaluating whether to broaden or suspend the regulations. If the regulations are broadened, they could have an adverse impact on our operations, but we cannot predict the
effects on Comcels financial performance. See Note 17 to our audited consolidated financial statements included in this annual report.

Comcel holds ten-year concessions, acquired in 1994, to provide wireless telecommunications services in the eastern, western and Caribbean regions of Colombia. Under the terms of the concessions, Comcel
is required to make quarterly royalty payments to the Ministry of Communications based on its revenues. Under the terms of an agreement entered into in March 2004, the Ministry of Communications agreed to renew Comcels concessions through
2014.



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Panama

Claro Panamás business is subject to comprehensive regulation and oversight by the National Authority of Public Services
(Autoridad Nacional de Servicios Públicos).

Claro Panamá has a license for the provision of mobile
voice, data and video services in Panama. The license grants the right for use of 30 MHz in the 1900 MHz band for a 20-year period.

Andean
Region

Ecuador

Our wireless and fixed line operations are subject to regulation by:



| |  |  | the National Telecommunications Counsel (Consejo Nacional de Telecomunicaciones), which is responsible for policy-making in the
telecommunications area;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the National Telecommunications Secretariat (Secretaría Nacional de Telecomunicaciones, or Senatel), which is responsible for
executing the National Telecommunications Counsels resolutions;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the Telecommunications Agency (Superintendencia de Telecomunicaciones), which monitors the use of authorized frequencies and compliance with
concession provisions; and
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Telecommunications and Information Society Ministry (Ministerio de Telecomunicaciones y Sociedad de la Información), which was created in
August 2009 and is responsible for the telecommunications industrys development.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In 2006, Conecel
obtained a concession to operate 10 MHz on the 1900 MHz (Sub Band E-E) radio spectrum. This included a concession for PCS services granted in August 2008 that expires in August 2023, and concessions for data transmission and Internet services
granted in May 2002 that expire in May 2017. The new PCS concession allows us to provide 3G services and contains stricter quality of service requirements regarding issues such as number of successful call completions, average delivery time of SMS
services, area coverage and service.

Ecuador Telecom holds a concession to offer fixed-line telephony (including
long-distance), public telephony and data transmission services as well as a license to use the 3.5 GHz frequency band that expires in May 2023.

Peru

The main telecommunications regulatory authorities in Peru are
the Supervising Entity of Private Investment in Telecommunications of Peru (Organismo Supervisor de Inversión Privada en Telecomunicaciones del Perú) and the Ministry of Transportation and Communications (Ministerio de
Transportación y Comunicaciones).

América Móvil Perú holds concessions to provide mobile,
PCS, fixed, long-distance and value added services covering all departments in Peru. The concessions were awarded by the Ministry of Transportation and Communications in May 2000, March 2001 and December 2002, respectively, and each covers a
20-year period. The concessions contain coverage, reporting and service requirements. The Ministry of Transportation and Communications is authorized to cancel the concessions in case of specified breaches of the terms of a concession. In 2006,
Telmex Perú acquired concessions to provide wireless access services in the 3.5 GHz band in Lima and eight provinces in Peru.

Mobile number portability was implemented in January 2010, and during 2010, requests transferring to América Móvil Perú amounted to 72.9% of total portability requests.



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Central America

El Salvador

CTEs business is subject to comprehensive
regulation and oversight by the Electricity and Telecommunications Agency (Superintendencia General de Electricidad y Telecomunicaciones). CTE holds a concession from the Salvadorean government to operate its nationwide fixed-line network and
a nationwide PCS 1900 MHz concession to operate its cellular network.

Guatemala

Telguas business is subject to comprehensive regulation and oversight by the Guatemalan Telecommunications Agency
(Superintendencia de Telecomunicaciones) under the General Telecommunications Law (Ley General de Telecomunicaciones). Beginning in May 2006, Telguas business is subject to regulation under certain dispositions of the free trade
agreement among the Dominican Republic, Central American countries, including Guatemala, and the United States. Telgua holds a license from the Guatemalan government to operate its nationwide fixed-line network and numerous licenses to operate its
cellular network on different frequencies and in all the national territory.

Nicaragua

Enitels business is subject to comprehensive regulation and oversight by the Nicaraguan Telecommunications Institute (Instituto
Nicaragüense de Telecomunicaciones y Correos) under the General Telecommunications and Postal Services Law (Ley General de Telecomunicaciones y Servicios Postales).

Honduras

Sercom Honduras business is subject to comprehensive regulation and oversight by the Honduran Telecommunications Agency (Comisión Nacional de Telecomunicaciones) under the
Telecommunications Law (Ley Marco del Sector de Telecomunicaciones).

United States

TracFone is subject to the jurisdiction of the U.S. Federal Communications Commission (FCC) and to certain U.S.
telecommunications laws and regulations. TracFone is not required to hold wireless licenses to carry out its business.

Caribbean

Dominican Republic

The Dominican Institute of Telecommunications (Instituto Dominicano de las Telecomunicaciones, or Indotel) is in charge of supervising the telecommunications industry in the Dominican
Republic. Codetel holds concessions to provide telecommunication services in the Dominican Republic. The concessions do not contain coverage, reporting or service requirements. Indotel is authorized to cancel the concessions in the event of
specified breaches of their terms.

Jamaica

The Office of Utilities Regulator (OUR) is in charge of supervising the telecommunications industry in Jamaica. Oceanic holds
concessions to provide wireless services in Jamaica that contain coverage, reporting and service requirements. The OUR has the authority to cancel the concessions in the event of specified breaches of their terms.



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Puerto Rico

The FCC and the Telecommunications Regulatory Board of Puerto Rico oversee and regulate the telecommunications industry in Puerto Rico.
Telpri holds concessions to provide PCS and long-distance services in Puerto Rico that contain coverage, reporting and service requirements. The FCC has the authority to cancel the concessions in the event of specified breaches of their terms.



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CAPITAL EXPENDITURES

The following table sets forth our consolidated capital expenditures by segment for each year in the two-year period ended
December 31, 2010. The table below includes capital expenditures on property, plant and equipment and on acquisitions or renewals of licenses. See Liquidity and Capital ResourcesFunding Requirements under Item 5.



|                           |  |                             |        |  |      |     |        | 
|-------------------------- |  | --------------------------- | ------ |  | ---- | --- | ------ | 
|                           |  | Year endedDecember 31,(1)   |       
|                           |  | 2009                        |        |  | 2010 |    
|                           |  | (millions of Mexican pesos) |       
|Mexico Wireless            |  | Ps.                         | 8,254  |  |      | Ps. | 8,179  | 
|Mexico Fixed               |  |                             | 9,676  |  |      |     | 9,460  | 
|Brazil                     |  |                             | 25,039 |  |      |     | 30,890 | 
|Southern Cone              |  |                             | 7,312  |  |      |     | 9,709  | 
|Colombia and Panama        |  |                             | 11,469 |  |      |     | 7,522  | 
|Andean Region              |  |                             | 4,672  |  |      |     | 3,709  | 
|Central America            |  |                             | 6,120  |  |      |     | 6,195  | 
|United States              |  |                             | 462    |  |      |     | 435    | 
|Caribbean                  |  |                             | 6,826  |  |      |     | 5,841  | 
|                           |  |                             |        |  |      |     |        | 
|Total capital expenditures |  | Ps.                         | 79,830 |  |      | Ps. | 81,942 | 
|                           |  |                             |        |  |      |     |        | 



|(1) | Figures reflect amounts accrued for each period.
|--- | ------------------------------------------------

We have budgeted capital expenditures of approximately U.S.$8.4 billion for the year ending December 31, 2011, but this budgeted amount could change as we re-evaluate our expenditure needs during the
year. We expect to spend approximately one-third of our budgeted capital expenditures in Brazil and approximately one-fifth in Mexico. Our capital expenditures could increase if we obtain regulatory authorization to offer television and audio
services in Mexico, or as a result of any business acquisitions. Our historical and budgeted capital expenditures discussed above do not include expenditures on acquisitions.



|Item 5. | Operating and Financial Review and Prospects
|------- | --------------------------------------------

Introduction

Presentation in IFRS

The following discussion should be read in conjunction with our audited consolidated financial statements and the notes thereto included
in this annual report. Our financial statements have been prepared in accordance with IFRS as issued by the IASB. We began reporting under IFRS for the year ending December 31, 2010, with an IFRS adoption date of December 31, 2010 and a
transition date to IFRS of January 1, 2009. Note 1(II)(b) to our audited consolidated financial statements contains an analysis of the valuation, presentation and disclosure effects of adopting IFRS and a reconciliation between Mexican FRS and
IFRS as of January 1 and December 31, 2009 and for the year ended December 31, 2009.

In connection with our
adoption of IFRS, we relied on certain exceptions from IFRS that are required or permitted in connection with the initial adoption of IFRS. The mandatory exceptions on which we relied are those relating to (1) the determination of estimates at
the date of transition; (2) the prospective application of certain requirements of IAS 27 (as amended in 2008), Consolidated and Separate Financial Statements, applicable to non-controlling interests at the date of transition; and (3) the
prospective application of derecognition of financial assets and liabilities. The mandatory exception regarding hedge accounting is not applicable to our derivative financial instruments.



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Below we describe the optional exceptions on which we relied, together with a discussion of
the impact that the treatment specified by IFRS would have had absent our election to rely on the relevant exemption. See Note 1(II)(b)(7) to our audited consolidated financial statements.



| |  |  | Deemed Cost.    We used as the deemed costs at the date of transition the revalued cost of property, plant and equipment
under Mexican FRS at December 31, 2008. Had we adopted the historical cost methodology under IFRS, the cost of our property, plant and equipment would have been recognized based on their historical cost and we would have reversed inflation
adjustments. Had we adopted the fair value methodology under IFRS, the cost of our property, plant and equipment would have been determined based on an appraisal as of the date of transition and following periods.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Business Combinations.    We reflect business combinations prior to the date of transition as they were recognized using the
purchase method under Mexican FRS. Had we not exercised this exemption, we would have applied IFRS 3 to all our acquisitions prior to the date of transition to IFRS. IFRS differs from Mexican FRS particularly with respect to recognition and
valuation of employment obligations, property, plant and equipment and other liabilities. As a result, the assignment of net values would have been different under IFRS.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Cumulative Translation Differences.    We reclassified the cumulative translation effect from all foreign subsidiaries
determined under Mexican FRS to retained earnings at the date of transition. Had we not applied this exemption, we would have been able to reclassify the translation effect only for subsidiaries in countries experiencing hyperinflation as defined
under IFRS.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Note 3 to our audited consolidated financial statements discusses new accounting pronouncements
under IFRS that will become effective in 2011. We do not currently expect that any of these will have a significant impact on the presentation of our financial statements.

Acquisitions of CGT and Telmex Internacional

During 2010, we
acquired a controlling interest in CGT, which owns controlling interests in Telmex Internacional and in Telmex. The acquisition occurred in an initial exchange offer that closed in June 2010 and a series of subsequent exchange offers. We issued new
shares of América Móvil in exchange for the shares of CGT we acquired. The acquisition of the controlling interest in CGT was accounted for as a transaction between entities under common control, and accordingly our audited
consolidated financial statements include CGT, Telmex Internacional and Telmex as consolidated subsidiaries for all dates and periods presented. The acquisition of the non-controlling interest in CGT was accounted for as purchases of non-controlling
interests in a consolidated subsidiary as of the respective dates of acquisition.

We also acquired shares of Telmex
Internacional from unrelated parties. The acquisition occurred in an initial offer that also closed in June 2010, concurrently with the initial CGT offer, and a series of subsequent offers that continued in 2011. Shareholders of Telmex Internacional
elected whether to receive cash or new shares of América Móvil in exchange for their shares of Telmex Internacional. These transactions have been accounted for as purchases of non-controlling interests in a consolidated subsidiary as
of the respective dates of acquisition.

Investment in Net Serviços

We account for our investment in Net Serviços on the equity method, because we do not have a controlling interest in its voting
shares. In a series of cash tender offers beginning in 2010 and concluding in January 2011, we substantially increased our interest in the preferred shares of Net Serviços. Following such transactions, we own 91.9% of the total equity of Net
Serviços, including 92.3% of its preferred shares (which do not have voting rights), 49.0% of its voting common shares that we own directly, and a non-controlling interest in a company that owns the remaining 51.0% of its voting common
shares.



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Use of Certain Operating Measures

In analyzing our financial performance, we use certain operating measures that are not included in our financial statements. These
measures may not be comparable with similarly titled measures and disclosures by other companies. The principal such measures are:

ARPUaverage revenues per subscriber per month. This measure analyzes revenues from wireless data and voice services. We calculate ARPU for a given period by dividing service revenues for such
period by the average number of wireless subscribers for such period. The figure includes both prepaid and postpaid customers.

MOUsaverage minutes of use per subscriber per month. This measure analyzes usage of wireless services. We calculate MOUs by
dividing total wireless traffic in a given period by the average number of wireless subscribers for such period.

ChurnThis measure analyzes the rate at which customers disconnect our services (wireless or fixed). We calculate churn rate
as the total number of customer disconnections for a period divided by total subscribers at the beginning of such period. For wireless customers, postpaid subscribers are considered disconnected at the expiration of their contracts or earlier if
they voluntarily discontinue service, and prepaid customers are considered disconnected following a specified period of time after they become delinquent, or four months after they cease using our service, so long as they have not activated a
calling card or received traffic.

Market shareWe calculate our subscriber market share by dividing our own
subscriber figures into the total market subscriber figures periodically reported by the regulatory authorities in the markets in which we operate. We understand that these regulatory authorities compile total market subscriber figures based on
subscriber figures provided to them by market participants, and we do not independently verify these figures.

Segments

We have operations in 18 countries, which are grouped for financial reporting purposes in 9 segments. Our operations
in Mexico are presented in two segmentsMexico Wireless, which comprises principally Telcel, and Mexico Fixed, which consists of Telmex and its subsidiaries providing fixed-line services. Our headquarters operations are allocated to the Mexico
Wireless segment. Segment information is presented in Note 21 to our audited consolidated financial statements.

Factors
that drive financial performance differ for our different geographical segments, depending on subscriber acquisition costs, the competitive situation, the regulatory environment, economic factors, interconnection rates, capital expenditure
requirements and many other factors. Accordingly, our results of operations in each period reflect a combination of different effects in the different segments.

Effects of Exchange Rates

Our results of operations are affected by
changes in currency exchange rates. As discussed above, currency variations between the Mexican peso and the currencies of our non-Mexican subsidiaries, especially the Brazilian real, may affect our results of operations as reported in Mexican
pesos.

Changes in the value of the various operating currencies of our subsidiaries against the U.S. dollar also result in
exchange losses or gains on our net U.S. dollar-denominated indebtedness and accounts payable. Appreciation of these currencies against the U.S. dollar generally results in foreign exchange gains, while depreciation of these currencies against the
U.S. dollar generally results in foreign exchange losses. We recorded net foreign exchange gains of Ps. 5.6 billion in 2010 and Ps. 13.4 billion in 2009. Changes in exchange rates also affect the fair value of derivative instruments that we use to
manage our currency risk exposures. We recognized net fair value losses on derivatives of Ps. 9.1 billion in 2010 and Ps. 8.5 billion in 2009. See Note 2(o) to our audited consolidated financial statements.



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Effects of Regulation

We operate in a regulated industry. Although currently we are free to set end prices to our wireless customers, our results of operations
and financial condition have been, and will continue to be, affected by regulatory actions and changes. In recent periods, for example, regulators have imposed or promoted decreases to interconnection rates, and we expect further decreases in
interconnection rates in Mexico, Chile and Colombia. Lower interconnection revenues have often been offset by increased traffic resulting from lower effective prices to customers, but this may change.

Composition of Operating Revenues

Our operating revenues consist of voice mobile revenues (44.1% of total operating revenues in 2010), voice fixed revenues (23.1% in 2010), data mobile revenues (12.7% in 2010), data fixed revenues (10.9%
in 2010), Pay TV revenues (1.6% in 2010) and other services and discounts (7.8% in 2010). Other services include revenues from selling handsets and other equipment, as well as other miscellaneous revenue. Revenues from other services also reflect
deductions for commissions paid to our distributors.

Voice revenues include primarily monthly subscription charges, airtime
charges, charges for local and long-distance calls, and interconnection charges billed to other service providers for calls completed on our network. Revenues from monthly subscription charges are driven mainly by the number of subscribers and the
pricing of subscription packages. The primary driver of usage charges (airtime and interconnection charges) is traffic, which, in turn, is driven by the number of customers and by their average usage. Postpaid wireless customers generally have an
allotment of airtime each month for which they are not required to pay usage charges.

Revenues from wireless and fixed data
services include primarily revenues from value-added services, corporate networks, data services and Internet access service. Revenues from corporate networks mainly consist of revenues from installing and leasing dedicated private lines, revenues
from VPN services and revenues from the sale of value-added services to these customers.

Pay TV revenue consists primarily of
subscription charges, charges for additional programming and advertising revenue.

We also have sales revenues from selling
handsets and other equipment. Most of our new subscribers purchase a handset, and although we also sell new handsets to existing customers, changes in sales revenues are driven primarily by the number of new customers. The pricing of handsets is not
geared primarily to making a profit from handset sales, because it also takes into account the service revenues that are expected to result when the handset is used.

Revenues from sales of prepaid services are deferred and recognized as airtime is used or when it expires, and are included under usage charges. Revenues are recognized at the time services are provided.
Billed revenues for service not yet rendered are recognized as deferred revenues.

Seasonality of our Business

Our business has been subject to a certain degree of seasonality, characterized by a higher number of new clients
during the fourth quarter of each year. We believe seasonality is mainly driven by the Christmas shopping season.

General Trends Affecting
Operating Results

We have experienced continuing growth in our operating revenues in most of our markets, except for fixed
voice services. The main drivers of increased revenues in 2010 were wireless subscriber growth, especially in postpaid wireless plans, and increased use of both wireless and fixed data services. This has been partly offset by



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declining prices for many services under highly competitive market conditions and by declining interconnection rates. Subscriber acquisition costs, including advertising, handset subsidies and
selling expenses, continue to increase. Operating costs have also increased as a result of many factors including the cost of content for wireless data services, increased advertising, customer care programs such as call centers, and the growing
size and complexity of our networks. Our operating margin, which depends on the balance between subscriber growth, increasing usage, pricing and higher costs, decreased slightly in 2010.

Consolidated Results of Operations for 2010 and 2009

Operating
Revenues

Operating revenues increased by 8.3% in 2010. The Ps. 46.6 billion total increase was attributable to
increases in revenues from our mobile operations, pay TV and other services, slightly offset by a decrease in revenues from our fixed-line operations. Without taking into account other services and discounts, our operating revenues increased by 7.3%
in 2010.

Voice MobileVoice mobile revenues increased by 7.0% in 2010. The Ps. 17.5 billion total increase
was principally due to an increase in traffic, which resulted in increased airtime and monthly charges.

Voice
FixedVoice fixed revenues decreased by 4.6% in 2010. The total decrease of Ps. 6.8 billion in voice fixed revenues was principally due to a decrease in long distance traffic and lower interconnection rates.

Data MobileData mobile revenues increased by 39.3% in 2010. The total increase of Ps. 21.7 billion in data mobile revenues
was principally due to increased use of value-added services, including SMS messaging and web browsing.

Data
FixedData fixed revenues increased by 8.8% in 2010. The total increase of Ps. 5.3 billion in data fixed revenues was principally due to residential and corporate subscriber growth.

Pay TVPay TV revenues increased by 59.2% in 2010. The total increase of Ps. 3.5 billion in Pay TV revenues was principally
due to subscriber growth in our Brazilian operations.

Other services and discountsRevenues from other services
and discounts increased by 12.9% in 2010. The total increase of Ps. 5.4 billion primarily reflects sales of handsets, accessories and computers, partially offset by an increase of Ps. 1.7 billion in commissions paid to distributors.

Operating Costs and Expenses

Cost of sales and servicesCost of sales and services represented 41.7% of operating revenues in 2010 and 41.5% of operating revenues in 2009. In absolute terms, cost of sales and services
increased by 8.9% in 2010. This increase was slightly greater than the 8.3% growth in operating revenues during the same period.

Cost of sales was Ps. 85.5 billion in 2010 and Ps. 80.9 billion in 2009 and primarily represents the cost of handsets, accessories and computers sold to costumers. Costs of handsets, accessories and
computers increased by 5.7% in 2010.

Cost of services was Ps. 167.9 billion in 2010 and Ps. 151.7 billion in 2009. The 10.0%
increase in 2010 was greater than the growth in service revenues, which increased by 8.3%. Cost of services increased faster than service revenues primarily due to increased royalty payments under our concessions and licenses, increased network
maintenance costs and increased expenses related to rental of cell and switch sites.



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Commercial, administrative and generalCommercial, administrative and general
expenses represented 17.7% of operating revenues in 2010 and 17.2% of operating revenues in 2009. On an absolute basis, commercial administrative and general expenses increased by 11.3% in 2010. The increase in commercial, administrative and general
expenses in 2010 principally reflects higher customer services expenses and profit sharing expenses in Mexico, Ecuador and Peru.

Telcel and Telmex, like other Mexican companies, are required by law to pay to their employees, in addition to their agreed compensation and benefits, profit sharing in an aggregate amount equal to 10% of
each of their taxable income. Our subsidiaries in Ecuador and Peru are also required to pay employee profit sharing at a rate of 15% and 10%, respectively, of taxable income. We recognize these amounts under commercial, administrative and general
expenses.

Other expense, netIn 2010, we recorded net other expense of Ps. 3.6 billion, compared to net other
expense of Ps. 3.4 billion in 2009.

Depreciation and amortizationDepreciation and amortization increased by
14.0% (or Ps. 11.1 billion) in 2010. As a percentage of revenues, depreciation and amortization increased from 14.2% in 2009 to 15.0% in 2010. The increase in depreciation and amortization in 2010 reflects the high level of capital expenditures and
the shortening of the useful lives of certain equipment in Brazil, Colombia and Paraguay and certain write-offs in Guatemala.

Operating Income

Operating income increased by 2.3% in 2010, reflecting the increase in our operating revenues. All of our segments reported operating income in 2010. Operating margin (operating income as a percentage of
operating revenues) was 25.1% in 2010 and 26.5% in 2009. The decrease in our operating margin in 2010 is due principally to higher subscriber acquisition, network maintenance and customer service costs and royalty payments under our concessions and
licenses.

Interest income

Interest income increased by 30.9% in 2010. The total increase of Ps. 1.1 billion in interest income is principally due to higher cash balances.

Interest expense

Interest expense increased by 18.4% in 2010. The total increase of Ps. 2.7 billion in interest expense is principally due to a higher average level of indebtedness.

Foreign exchange gain, net

Foreign exchange gain, net represented Ps. 5.6 billion in 2010, compared to Ps. 13.4 billion in 2009. The lower level of net foreign exchange gains was primarily attributable to a lower rate of
depreciation of the U.S. dollar against the major currencies in which we operate, particularly the Brazilian real.

Valuation of derivatives and other financial items, net

Net fair value losses increased by 19.0% in 2010. The total increase of Ps. 1.9 billion is principally due to the effects of exchange rate
movements on derivative financial instruments, commissions paid to financial institutions in respect of financing arrangements and debt offerings and brokerage commissions paid in respect of open market share repurchases.



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Equity in results of associates

Our proportionate share of the net income of associates accounted for under the equity method was of Ps. 1.7 billion in 2010 and
Ps. 2.0 billion in 2009. The income in 2010 and 2009 reflects principally our share of the income reported by Net Serviços.

Income Tax

Our effective rates of provisions for corporate income
tax as a percentage of pretax income were 26.8% in 2010 and 25.3% in 2009. Our effective rate in 2010 and 2009 includes the recognition of the deferred tax benefits corresponding to tax losses in Brazil. The statutory rate of Mexican corporate
income tax was 30% in 2010 and 28% in 2009.

Net Income

We had net income of Ps. 98.9 billion in 2010 and Ps. 106.9 billion in 2009. The decrease in net income in 2010 reflects principally
lower levels of exchange gains in 2010.

Segment Results of Operations for 2010 and 2009

We discuss below the operating results of each operating segment. Note 2(b)(ii) to our audited consolidated financial statements describes
how we translate the financial statements of our non-Mexican subsidiaries. Exchange rate changes between the Mexican peso and those currencies affect our reported results in Mexican pesos and the comparability of reported results between periods.

The following table sets forth the exchange rate used to translate the results of our significant non-Mexican operations, as
expressed in Mexican pesos per foreign currency unit, and the change from the rate used in the prior year. The U.S. dollar is our functional currency in several countries in addition to the United States, including Ecuador and Puerto Rico.



|                   |  |                                        |         |  |      |  |         |         |  |  |       |   
|------------------ |  | -------------------------------------- | ------- |  | ---- |  | ------- | ------- |  |  | ----- | --
|                   |  | Mexican pesos per foreigncurrency unit |        
|                   |  | 2009                                   |         |  | 2010 |  |         | %Change | 
|Guatemalan quetzal |  |                                        | 1.658   |  |      |  | 1.5680  |         |  |  | (5.4  | )%
|U.S. dollar        |  |                                        | 13.5130 |  |      |  | 12.6371 |         |  |  | (6.5  | ) 
|Brazilian real     |  |                                        | 6.8248  |  |      |  | 7.1828  |         |  |  | 5.2   |   
|Colombian peso     |  |                                        | 0.0063  |  |      |  | 0.0067  |         |  |  | 6.3   |   
|Argentine peso     |  |                                        | 3.6311  |  |      |  | 3.2309  |         |  |  | (11.0 | ) 
|Dominican peso     |  |                                        | 0.3759  |  |      |  | 0.3426  |         |  |  | (8.9  | ) 



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The tables below set forth operating revenues and operating income for each of our segments
for the periods indicated.



|                    |  |                               |            |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|------------------- |  | ----------------------------- | ---------- | - | ----------------------------------- |  | ----- | ----------------------------- |  |  | --------------------------------- | - |  |  | ----- | -
|                    |  | Year ended December 31, 2009  |           
|                    |  | Operating revenues            |            |   | Operating income                    | 
|                    |  | (in millions ofMexican Pesos) |            |   | (as a % of totaloperating revenues) |  |       | (in millions ofMexican Pesos) |  |  | (as a % of totaloperating income) |  
|Mexico Wireless     |  |                               | Ps.146,095 |   |                                     |  | 26.0  | %                             |  |  | Ps. 72,995                        |   |  |  | 49.1  | %
|Mexico Fixed        |  |                               | 118,348    |   |                                     |  | 21.1  |                               |  |  | 32,505                            |   |  |  | 21.8  |  
|Brazil              |  |                               | 140,676    |   |                                     |  | 25.1  |                               |  |  | 15,489                            |   |  |  | 10.4  |  
|Southern Cone       |  |                               | 39,822     |   |                                     |  | 7.1   |                               |  |  | 4,917                             |   |  |  | 3.3   |  
|Colombia and Panama |  |                               | 42,437     |   |                                     |  | 7.6   |                               |  |  | 10,886                            |   |  |  | 7.3   |  
|Andean Region       |  |                               | 26,844     |   |                                     |  | 4.8   |                               |  |  | 6,416                             |   |  |  | 4.3   |  
|Central America     |  |                               | 17,956     |   |                                     |  | 3.2   |                               |  |  | 1,280                             |   |  |  | 0.9   |  
|United States       |  |                               | 22,655     |   |                                     |  | 4.0   |                               |  |  | 797                               |   |  |  | 0.5   |  
|Caribbean           |  |                               | 28,210     |   |                                     |  | 5.0   |                               |  |  | 4,085                             |   |  |  | 2.7   |  
|Eliminations        |  |                               | (21,788    | ) |                                     |  | (3.9  | )                             |  |  | (558                              | ) |  |  | (0.3  | )
|                    |  |                               |            |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|Total               |  |                               | Ps.561,255 |   |                                     |  | 100.0 | %                             |  |  | Ps.148,812                        |   |  |  | 100.0 | %
|                    |  |                               |            |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  



|                    |  |                               |            |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|------------------- |  | ----------------------------- | ---------- | - | ----------------------------------- |  | ----- | ----------------------------- |  |  | --------------------------------- | - |  |  | ----- | -
|                    |  | Year ended December 31, 2010  |           
|                    |  | Operating revenues            |            |   | Operating income                    | 
|                    |  | (in millions ofMexican Pesos) |            |   | (as a % of totaloperating revenues) |  |       | (in millions ofMexican Pesos) |  |  | (as a % of totaloperating income) |  
|Mexico Wireless     |  |                               | Ps.157,555 |   |                                     |  | 25.9  | %                             |  |  | Ps. 76,090                        |   |  |  | 50.0  | %
|Mexico Fixed        |  |                               | 114,080    |   |                                     |  | 18.8  |                               |  |  | 27,992                            |   |  |  | 18.4  |  
|Brazil              |  |                               | 154,309    |   |                                     |  | 25.4  |                               |  |  | 13,843                            |   |  |  | 9.1   |  
|Southern Cone       |  |                               | 43,466     |   |                                     |  | 7.2   |                               |  |  | 7,531                             |   |  |  | 4.9   |  
|Colombia and Panama |  |                               | 48,893     |   |                                     |  | 8.0   |                               |  |  | 12,513                            |   |  |  | 8.2   |  
|Andean Region       |  |                               | 29,484     |   |                                     |  | 4.9   |                               |  |  | 9,077                             |   |  |  | 6.0   |  
|Central America     |  |                               | 17,154     |   |                                     |  | 2.8   |                               |  |  | 783                               |   |  |  | 0.5   |  
|United States       |  |                               | 35,562     |   |                                     |  | 5.9   |                               |  |  | 1,617                             |   |  |  | 1.1   |  
|Caribbean           |  |                               | 26,993     |   |                                     |  | 4.4   |                               |  |  | 3,304                             |   |  |  | 2.2   |  
|Eliminations        |  |                               | (19,640    | ) |                                     |  | (3.3  | )                             |  |  | (429                              | ) |  |  | (0.4  | )
|                    |  |                               |            |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|Total               |  |                               | Ps.607,856 |   |                                     |  | 100.0 | %                             |  |  | Ps.152,321                        |   |  |  | 100.0 | %
|                    |  |                               |            |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  

Mexico Wireless

Segment operating revenues increased by 7.8% in 2010. Excluding revenues from other services and discounts, service revenues increased by 8.2% in 2010. This increase in service revenues was primarily
driven by an increase in data revenues and voice revenues. Wireless voice revenues increased by 3.2% in 2010, reflecting growth in revenues from monthly charges and airtime, long distance and roaming services, partially offset by a decrease in
interconnection revenues due to lower interconnection fees that were not compensated by volume. Wireless data revenues increased by 26.8% in 2010, principally due to increased revenue from SMS messaging, two-way messaging and e-commerce. In 2010,
the components of service revenues were wireless voice (74.7%) and wireless data (25.3%).

In 2010, the number of prepaid
wireless subscribers increased by 7.1%, and the number of postpaid wireless subscribers increased by 21.6%, resulting in an increase in the total number of wireless subscribers in Mexico of 8.4% to approximately 64.1 million as of
December 31, 2010, which represented a net addition of 4.9 million wireless subscribers.

Average MOUs per
subscriber increased by 8.2% in 2010. ARPU increased by 1.8% in 2010. During 2010, we lowered the price of some of our services in Mexico through new commercial plans and promotions, which



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contributed to the increase in subscribers (primarily prepaid subscribers) and MOUs but dampened the increase in ARPU. Reductions in interconnection tariffs and a decline in long distance traffic
resulted in lower interconnection revenues in 2010. The wireless churn rate for our Mexican Wireless operations remained stable at 3.2% in 2009 and 2010.

Segment operating income increased by 11.1% in 2010. Segment operating margin (operating income as a percentage of operating revenues) was 48.3% in 2010 and 50.0% in 2009. The increase in segment
operating income and operating margin in 2010 is due principally to a slower rate of increase in interconnection and network maintenance costs than in our operating revenues.

The financial information for our Mexico Wireless segment set forth in Note 21 includes revenues and costs from group corporate activities, such as licensing fees and group overhead expenses. The
discussion above refers to our operating results in our Mexico Wireless segment and excludes the results of our group corporate activities.

Mexico Fixed

Segment operating revenues decreased by 3.6% in 2010.
Excluding revenues from other services and discounts, service revenues decreased by 5.6%. This decrease is principally due to decreases in voice revenues, partially offset by an increase in data revenues. Fixed voice revenues decreased by 10.3% in
2010, reflecting significant reductions in local and long distance traffic and lower interconnection fees. Revenues from broadband and corporate network services increased by 6.7% in 2010, principally due to corporate and residential subscriber
growth. In 2010, the components of service revenues were fixed voice (69.2%) and broadband and corporate network services (30.8%).

In 2010, the number of fixed voice RGUs in Mexico decreased by 1.8%, and the number of broadband RGUs in Mexico increased by 12.8%, resulting in an increase in total RGUs in Mexico of 2.4% to
approximately 23.0 million as of December 31, 2010. In 2010, long distance minutes increased by 1.6% and interconnection minutes decreased by 0.7%, resulting in an increase in total minutes in Mexico of 0.2%. The fixed voice churn rate
decreased slightly from 1.4% in 2009 to 0.9% in 2010. The broadband churn rate remained stable at 1.6% in 2009 and 2010.

Segment operating income decreased by 13.9% in 2010. Segment operating margin was 24.5% in 2010 and 27.5% in 2009. The decrease in
segment operating income and operating margin in 2010 is due principally to the decrease in operating revenues and increased costs of equipment, network maintenance costs and energy costs.

Brazil

Segment operating revenues increased by 9.7% in 2010. This increase partly reflects the appreciation of the Brazilian real against the Mexican peso. On a local-currency basis, segment operating revenues
increased by 4.9% in 2010.

Excluding revenues from other services and discounts, service revenues on a local-currency basis
increased by 5.6% in 2010. This increase in service revenues is due principally to increases in fixed and wireless data revenues. Wireless data revenues increased 31.3% in 2010 and fixed data revenues increased 3.7%, as a result of greater use of
value-added services such as SMS messaging and web browsing. Pay TV revenues increased by nearly a factor of five in 2010 as a result of subscriber growth driven by new commercial packages of Embratel and Net Serviços. Wireless and fixed
voice revenues remained flat in 2010 as compared to 2009. In 2010, the components of service revenues were wireless voice and wireless data services (48.7%) and fixed voice, broadband and pay TV services (51.3%).

In 2010, the number of prepaid wireless subscribers increased by 15.9%, and the number of postpaid wireless subscribers increased by
18.1%, resulting in an increase in the total number of wireless subscribers in



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our Brazil segment of 16.3% to approximately 51.6 million as of December 31, 2010. In 2010, the number of fixed voice RGUs increased by 22.7%, the number of broadband RGUs increased by
21.5% and the number of pay TV RGUs increased by 39.2%, resulting in an increase in total RGUs in our Brazil segment of 28.1% to approximately 18.6 million as of December 31, 2010.

Average MOUs per subscriber increased by 13.1% in 2010. The increase in average MOUs during 2010 reflects increased traffic due to new
commercial plans and promotional packages in Brazil. On a local-currency basis, ARPU decreased by 13.6% in 2010. This decrease during 2010 reflects a decrease in monthly, airtime and interconnection rates.

Segment operating income decreased by 10.6% in 2010. On a local-currency basis, operating income decreased by 15.2%. Segment operating
margin was 9.0% in 2010 and 11.0% in 2009. On a local-currency basis, 2010 operating margin was 8.8% and 2009 operating margin was 10.7%. Segment operating income and operating margin in 2010 continued to be affected by a high level of depreciation
and amortization expenses relative to revenues due to the significant costs incurred to deploy networks. In 2010, the depreciation expense resulting from the shortening of the useful lives of certain plant and equipment in Brazil was Ps. 3.4
billion. On a local-currency basis, depreciation and amortization expenses represented 22.0% of segment operating revenues in 2010 and 18.0% of segment operating revenues in 2009.

Southern ConeArgentina, Chile, Paraguay and Uruguay

Segment operating revenues increased by 9.2% in 2010. This increase partly reflects the depreciation of the local currencies against the
Mexican peso. On a local-currency basis, segment operating revenues increased by 16.8% in Argentina, Paraguay and Uruguay, and by 22.4% in Chile. For this purpose, we analyze results in Argentina, Paraguay and Uruguay in terms of the Argentine peso
because Argentina accounts for the major portion of the operations in these three countries.

Excluding revenues from other
services and discounts, service revenues on a local-currency basis increased by 18.9% in Argentina, Paraguay and Uruguay, and by 23.3% in Chile. These increases in service revenues were driven primarily by increased postpaid and prepaid rates. In
2010, wireless voice and data services reflected 93.7% of service revenues in Argentina, Paraguay and Uruguay and 64.1% in Chile.

Average MOUs per subscriber increased by 2.1% in 2010, primarily due to new promotional packages for prepaid and postpaid services. On a local-currency basis, ARPU increased by 9.1% in Argentina, Paraguay
and Uruguay and decreased by 0.1% in Chile. ARPU was positively affected by higher prices and higher usage of data and adversely affected by lower usage by newly-added subscribers.

Segment operating income increased by 53.2% in 2010. On a local-currency basis, operating income increased by 46.4% in Argentina,
Paraguay and Uruguay, and decreased by 31.7% in Chile. Segment operating margin was 17.3% in 2010 and 12.3% in 2009. On a local-currency basis, 2010 operating margin was 35.6% in Argentina, Paraguay and Uruguay, and 15.7% in Chile, and 2009
operating margin was 28.4% in Argentina, Paraguay and Uruguay, and 14.6% in Chile. Results in all countries in the segment reflect the increased leverage of our network and customer service infrastructure, which in Chile was more than offset by
increases in subscriber acquisition costs.

Colombia and Panama

Segment operating revenues increased 15.2% in 2010. This increase partly reflects the appreciation of the local currencies against the
Mexican peso. On a Colombian peso basis, segment operating revenues increased by 7.9%. For this purpose, we analyze segment results in terms of the Colombian peso because Colombian operations represent the great majority of our operations in this
segment.



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Excluding revenues from other services and discounts, service revenues on a Colombian peso
basis increased by 5.6% in 2010. This increase reflected principally increases in fixed and wireless data revenues. Fixed and wireless data services increased by 42.0% in 2010, as a result of new promotional packages focused on SMS texting and web
browsing. Fixed and wireless voice revenues decreased by 1.3% in 2010. Pay TV revenues decreased slightly by 0.5% in 2010. In 2010, wireless voice and wireless data services represented 82.6% of our segment service revenues.

Average MOUs per subscriber increased by 14.5% in 2010. On a Colombian peso basis, ARPU increased by 0.7% in 2010. The increases in
average MOUs and ARPU in 2010 reflected primarily an increase in traffic resulting from the net increase in subscriber growth.

Segment operating income increased by 14.9% in 2010. On a Colombian peso basis, operating income increased by 5.5%. Segment operating
margin was 25.6% in 2010 and 2009. On a Colombian peso basis, 2010 operating margin was 26.5%, and 2009 operating margin was 27.1%. The decrease in segment operating margin in 2010 is due principally to a Ps. 1.8 billion depreciation expense
resulting from the shortening of the useful lives of certain plant and equipment in Colombia. Segment results also reflect increased costs for technical personnel and content for wireless data services.

Andean RegionEcuador and Peru

Segment operating revenues increased by 9.8% in 2010. This increase partly reflects the depreciation of the local currencies against the Mexican peso. On a local-currency basis, segment operating revenues
increased by 11.1% in Ecuador and by 17.2% in Peru.

Excluding revenues from other services and discounts, service revenues on
a local-currency basis increased by 11.5% in Ecuador, and by 19.3% in Peru. These increases in service revenues were driven primarily by higher usage of all services, particularly wireless voice and wireless and fixed data services. In 2010,
wireless voice and wireless data services represented 97.9% of service revenues in Ecuador and 86.9% in Peru.

Average MOUs
per subscriber increased by 9% in 2010, reflecting principally increased usage by prepaid subscribers and higher utilization of minutes in postpaid plans. On a local-currency basis, ARPU decreased by 11.1% in Ecuador and increased by 4.8% in Peru.
ARPU in both countries was affected by higher prices from data services and airtime and the elimination of national long distance charges. Revenues from interconnection rates decreased in Ecuador, but increased in Peru.

Segment operating income increased by 41.5% in 2010. On a local-currency basis, operating income increased by 18.3% in Ecuador and by
54.3% in Peru. Segment operating margin was 30.8% in 2010 and 23.9% in 2009. On a local-currency basis, 2010 operating margin was 35.9% in Ecuador, and 29.5% in Peru, and 2009 operating margin was 33.7% in Ecuador and 22.4% in Peru. The increase in
segment operating income and operating margin in 2010 was driven by lower subscriber acquisition costs partially offset by increased concession fees, employee profit sharing and network maintenance costs.

Central AmericaGuatemala, El Salvador, Honduras and Nicaragua

Segment operating revenues decreased by 4.5% in 2010. Segment operating revenues partly reflect the depreciation of the local currencies
against the Mexican peso. On a U.S. dollar basis, segment operating revenues increased by 2.4% in 2010. For this purpose, we analyze segment results in U.S. dollars because it is the functional currency in our operations in El Salvador (our
headquarters for this segment) and the currencies in Guatemala, Honduras and Nicaragua are relatively stable against the U.S. dollar.

Excluding revenues from other services and discounts, service revenues on a U.S. dollar basis increased by 2.8%. These increases in service revenues were driven primarily by increases in wireless voice,
data, broadband



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and pay TV services, offset by decreases in fixed voice services. In 2010, the components of segment operating revenues were wireless voice and wireless data services (52.8%) and fixed
voice, broadband and pay TV (47.2%).

Average MOUs per subscriber increased by 6.4% in 2010, primarily due to new commercial
plans for voice and data services. On a U.S. dollar basis, ARPU decreased by 16.7%. This decrease was primarily attributable to lower interconnection and long distance rates and more aggressive pricing packages for monthly airtime and data services.

Segment operating income decreased by 38.8% in 2010. On a U.S. dollar basis, operating income was largely eliminated in 2010.
Segment operating margin was 4.6% in 2010 and 7.1% in 2009. On a U.S. dollar basis, 2010 operating margin was 0.1%, and 2009 operating margin was 10.7%. In 2010, we replaced our network in Guatemala, resulting in a Ps. 645,930 million write-off
of the book value of the old network. Excluding this depreciation expense in Guatemala, segment operating income would have decreased by 62.1% on a U.S. dollar basis.

United States

Segment operating revenues increased by 57.0% in
2010. This increase partly reflects the depreciation of the U.S. dollar against the Mexican peso. On a local-currency basis, segment operating revenues increased by 67.3% in 2010.

Excluding revenues from other services and discounts and excluding certain transactions with other segments, operating revenues on a
local-currency basis increased by 61.5% in 2010. This increase in service revenues reflected principally new commercial plans and promotional packages such as Straight Talk and Safe Link that contributed to the increase in subscriber growth and
usage. In 2010, the number of wireless subscribers, all of which are prepaid subscribers, increased by 23.0% to approximately 17.8 million as of December 31, 2010.

Average MOUs per subscriber increased by 188.9% in 2010. On a local-currency basis, ARPU increased by 30.0% in 2010. The increase in average MOUs and ARPU is primarily due to our new commercial plans and
promotional packages.

Segment operating income increased 102.9% in 2010. On a local-currency basis, and excluding certain
transactions with other segments, operating income increased 15.9% in 2010. This increase primarily reflects subscriber growth due to new commercial plans and promotional packages.

Segment operating margin was 4.5% in 2010 and 3.5% in 2009. On a local-currency basis, and excluding certain transactions with other
segments, 2010 operating margin was 8.3% and 2009 operating margin was 12.0%. The decrease in operating margin in 2010 reflects principally higher subscriber acquisition costs, service costs, equipment costs.

CaribbeanDominican Republic, Puerto Rico and Jamaica

Segment operating revenues increased by 4.3% in 2010. On a U.S. dollar basis, segment operating revenues increased by 2.7%. For this
purpose, we analyze segment results in U.S. dollars because it is the functional currency in our operations in Puerto Rico and the currencies in the Dominican Republic and Jamaica are relatively stable against the U.S. dollar.

Excluding revenues from other services and discounts, service revenues on a U.S. dollar basis increased by 2.4%. These increases in
service revenues were driven primarily by increases in data services, partially offset by lower voice revenues, in each case as a result of more aggressive pricing practices. In 2010, the components of segment operating revenues were wireless voice
and wireless data services (48.6%) and fixed voice, broadband and pay TV services (51.4%).



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Average MOUs per subscriber increased by 21.7% in 2010, primarily due to more competitive
packages for wireless voice services. On a U.S. dollar basis, ARPU remained flat in 2010.

Segment operating income decreased
by 19.1% in 2010. On a U.S. dollar basis, operating income decreased by 13.4% in 2010. Segment operating margin was 12.2% in 2010 and 14.5% in 2009. On a U.S. dollar basis, 2010 operating margin was 12.6%, and 2009 operating margin was 15.0%. The
decreases in segment operating income and operating margin in 2010 were driven primarily by increases in network maintenance, administration and consumer services expenses.

Liquidity and Capital Resources

Funding Requirements

We generate substantial resources from our operations. On a consolidated basis, operating activities provided Ps.
201.6 billion in 2010 and Ps. 216.5 billion in 2009. Our cash and cash equivalents amounted to Ps. 95.9 billion at December 31, 2010, compared to Ps. 59.8 billion at December 31, 2009. We use the cash that we generate
from our operations and from borrowings primarily for the following purposes:



| |  |  | We make substantial capital expenditures to continue expanding and improving our networks in each country in which we operate. Our capital expenditures
on plant, property and equipment were Ps. 77.8 billion in 2010 and Ps. 77.4 billion in 2009. We have budgeted capital expenditures for 2011 to be approximately U.S.$ 8.4 billion. See Capital Expenditures under Item 4.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We make capital expenditures to acquire or renew licenses. Our capital expenditures to acquire or renew licenses were Ps. 4.1 billion in 2010 and
Ps. 2.4 billion in 2009. The 2010 expenditures were primarily to acquire additional spectrum in Mexico and a new license in Costa Rica. The amount we spend on acquisitions and licenses varies significantly from year to year, depending on
acquisition opportunities, concession renewal schedules and needs for more spectrum.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | In some years, we make substantial expenditures on acquisitions. In 2010, we spent Ps. 34.0 billion acquiring shares of Telmex Internacional and
Ps. 26.8 billion acquiring shares of Net Serviços.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We must pay interest on our indebtedness and repay principal when due. As of December 31, 2010, we had Ps. 9.0 billion of principal due in
2011.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We pay regular dividends. We paid Ps. 17.2 billion in dividends in 2010 and Ps. 33.1 billion in 2009. Dividends for 2009 included an
extraordinary dividend of Ps. 0.50 per share at year end. Our shareholders have approved the payment of a Ps. 0.36 dividend per share in two installments in 2011.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We regularly repurchase our own shares. We also spent (including commissions and value-added taxes) Ps. 18.2 billion repurchasing our own shares
in the open market in 2010 and Ps. 31.5 billion in 2009. Our shareholders have authorized additional repurchases, and we have continued repurchasing our shares in the open market in 2011, but whether we will continue to do so will depend on
considerations including market prices and our other capital requirements.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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The following table summarizes certain contractual obligations as of December 31, 2010.
Many of our obligations are denominated in currencies other than Mexican pesos. Our purchase obligations and approximately 48.6% of our debt are denominated in U.S. dollars. The table does not include accounts payable or pension liabilities, and
amounts set forth in the table do not include interest and do not give effect to hedging transactions.



|                                                 |  |                        |         |  |                 |     |        |           |  |     |           |  |  |              |        |  |  |     |         | 
|------------------------------------------------ |  | ---------------------- | ------- |  | --------------- | --- | ------ | --------- |  | --- | --------- |  |  | ------------ | ------ |  |  | --- | ------- | 
|                                                 |  | Payments Due by Period |        
|                                                 |  | Total                  |         |  | Less than 1year |     |        | 1-3 years |  |     | 4-5 years |  |  | After 5years |       
|                                                 |  | (in millions)          |        
|Contractual obligations as of December 31, 2010: |  |                        |         |  |                 |     |        |           |  |     |           |  |  |              |        |  |  |     |         | 
|Equipment leases                                 |  | Ps.                    | 735     |  |                 | Ps. | 441    |           |  | Ps. | 294       |  |  | Ps.          |       |  |  | Ps. |        | 
|Real estate leases                               |  |                        | 18,845  |  |                 |     | 4,006  |           |  |     | 6,818     |  |  |              | 4,330  |  |  |     | 3,691   | 
|Short-term debt                                  |  |                        | 9,039   |  |                 |     | 9,039  |           |  |     |          |  |  |              |       |  |  |     |        | 
|Long-term debt                                   |  |                        | 294,061 |  |                 |     |       |           |  |     | 79,906    |  |  |              | 51,000 |  |  |     | 163,155 | 
|Purchase obligations                             |  |                        | 7,709   |  |                 |     | 6,969  |           |  |     | 326       |  |  |              | 81     |  |  |     | 333     | 
|                                                 |  |                        |         |  |                 |     |        |           |  |     |           |  |  |              |        |  |  |     |         | 
|Total                                            |  | Ps.                    | 330,389 |  |                 | Ps. | 20,455 |           |  | Ps. | 87,344    |  |  | Ps.          | 55,411 |  |  | Ps. | 167,179 | 
|                                                 |  |                        |         |  |                 |     |        |           |  |     |           |  |  |              |        |  |  |     |         | 

Other than the amounts described in the table above, we had no other outstanding material purchase
commitments as of December 31, 2010. We enter into a number of supply, advertising and other contracts in the ordinary course of business, but we do not believe that those contracts are material to our liquidity.

Under many of our concessions and licenses, we are required to make annual royalty payments in order to continue using such concessions
and licenses. These payments are typically calculated as a percentage of gross revenues generated under such concessions and licenses. In the case of the 1900 MHz spectrum (Band F) concessions in Mexico, however, we are required to pay Ps.
255 million (subject to adjustment for inflation) annually for 20 years in respect of the 10 MHz acquired during 2005.

We could have opportunities in the future to invest in other telecommunications companies worldwide, primarily in Latin America and the
Caribbean, because we believe the telecommunications sector in Latin America will continue to undergo consolidation. We can give no assurance as to the extent, timing or cost of such investments. We may also pursue opportunities in other areas in
the world.Some of the assets that we acquire may require significant funding for capital expenditures. See the discussion included earlier in this annual report under OverviewEffects of Recent Acquisitions under this
Item 5 for more information about these transactions.

Borrowings

In addition to funds generated from operations, we have used borrowings to fund acquisitions and capital expenditures and refinance debt.
We have relied on a combination of equipment financings, borrowings from international banks and borrowings in the Mexican and international capital markets. We have arranged several equipment financing facilities to further improve our liquidity
position. As of the date of this report, we have an aggregate of U.S.$ 680 million in committed undrawn equipment financing facilities.

As of December 31, 2010, our total consolidated indebtedness was Ps. 303.1 billion, compared to Ps. 277.2 billion as of December 31, 2009. Our net debt (total debt minus cash and cash
equivalents) at December 31, 2010 was Ps. 206.7 billion, a decrease of 5.0% as compared to December 31, 2009. This decrease reflects, among other things, our increased capacity for generating cash flow.

Without taking into account the effects of derivative financial instruments that we use to manage our interest rate and currency risk,
approximately 74.1% of our indebtedness at December 31, 2010 was denominated in currencies other than Mexican pesos (approximately 65.7% of such non-Mexican peso debt in U.S. dollars and 34.3% in other currencies), and approximately 27.4% of
our consolidated debt obligations bore interest at floating rates. After the effects of derivative transactions, approximately 25.3% of our total debt as of December 31, 2010 was denominated in U.S. dollars and approximately 25.0% was subject
to floating rates.



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The weighted average cost of all our third-party debt at December 31, 2010 (excluding
commissions and reimbursement of certain lenders for Mexican taxes withheld) was approximately 5.2%.

Our major categories of
indebtedness at December 31, 2010 are summarized in the table below.



|                                                           |  |                            |           | 
|---------------------------------------------------------- |  | -------------------------- | --------- | 
|                                                           |  | (millions
ofMexican pesos) |          
|Debt:                                                      |  |                            |           | 
|Denominated in U.S. dollars:                               |  |                            |           | 
|Export credit agency loans                                 |  |                            | Ps.19,540 | 
|Other bank loans                                           |  |                            | 13,566    | 
|5.500% Notes due 2014                                      |  |                            | 9,824     | 
|5.750% Notes due 2015                                      |  |                            | 5,849     | 
|5.625% Notes due 2017                                      |  |                            | 7,206     | 
|5.000% Senior Notes due 2019                               |  |                            | 9,268     | 
|5.500% Senior Notes due 2019                               |  |                            | 6,179     | 
|3.625% Senior Notes due 2015                               |  |                            | 9,268     | 
|5.500% Senior Notes due 2015                               |  |                            | 9,866     | 
|5.000% Senior Notes due 2020                               |  |                            | 24,714    | 
|6.125% Senior Notes due 2040                               |  |                            | 15,446    | 
|6.375% Notes due 2035                                      |  |                            | 12,126    | 
|6.125% Notes due 2037                                      |  |                            | 4,563     | 
|                                                           |  |                            |           | 
|Total                                                      |  |                            | 147,415   | 
|                                                           | 
|Denominated in Mexican pesos:                              |  |                            |           | 
|Domestic senior notes (certificados bursátiles)            |  |                            | 61,203    | 
|8.75% Senior Notes due 2016                                |  |                            | 4,500     | 
|9.00% Senior Notes due 2016                                |  |                            | 5,000     | 
|8.46% Senior Notes due 2036                                |  |                            | 7,872     | 
|Other bank loans                                           |  |                            | 46        | 
|                                                           |  |                            |           | 
|Total                                                      |  |                            | 78,621    | 
|                                                           | 
|Denominated in euro:                                       |  |                            |           | 
|Export credit agency loans                                 |  |                            | 186       | 
|3.75% Senior Notes due 2017                                |  |                            | 16,539    | 
|4.75% Senior Notes due 2022                                |  |                            | 12,404    | 
|                                                           |  |                            |           | 
|Total                                                      |  |                            | 29,129    | 
|                                                           | 
|Denominated in pounds sterling:                            |  |                            |           | 
|5.75% Senior Notes due 2030                                |  |                            | 12,540    | 
|                                                           |  |                            |           | 
|Total                                                      |  |                            | 12,540    | 
|                                                           | 
|Denominated in Colombian pesos                             |  |                            | 4,003     | 
|                                                           | 
|Denominated in Brazilian reais                             |  |                            | 2,960     | 
|                                                           | 
|Denominated in other currencies                            |  |                            | 28,432    | 
|                                                           |  |                            |           | 
|Total debt                                                 |  |                            | 303,100   | 
|Less short-term debt and current portion of long-term debt |  |                            | 9,039     | 
|                                                           |  |                            |           | 
|Total long-term debt                                       |  |                            | 294,061   | 
|                                                           |  |                            |           | 



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Additional information about certain categories of our indebtedness is provided below:



| |  |  | Dollar-denominated international notes.    We and our subsidiary Telmex have outstanding debt securities in the
international markets denominated in U.S. dollars. In March 2011, we issued additional América Móvil notes of two series (5.750% Notes due 2015 and 5.00% Notes due 2020) in exchange for outstanding Telmex notes of two series (5.50%
Notes due 2015 and 5.50% Notes due 2019) and cancelled the exchanged Telmex notes.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Mexican peso-denominated international notes.    Our 9.0% senior notes due January 2016 and our 8.46% senior notes due 2036
are denominated in Mexican pesos, but all amounts in respect of the notes are payable in U.S. dollars, unless a holder of notes elects to receive payment in Mexican pesos in accordance with certain specified procedures.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Mexican peso-denominated domestic notes.    Our domestic senior notes (certificados bursátiles)sold in the
Mexican capital markets have varying maturities, ranging from 2011 through 2037. Some bear interest at fixed rates, and others at variable rates based on CETES (a rate based on the cost of Mexican treasuries) or TIIE (a Mexican interbank rate).
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Colombian peso-denominated notes.    Comcel has issued notes in the Colombian capital markets denominated in Colombian
pesos. One series bears interest at a variable rate based on the Colombian consumer price index rate (IPC) plus a spread, and mature in 2013. Another bears interest at a 7.59% fixed rate, and matures in 2016. Some series are guaranteed by
América Móvil.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Bank loans.    At December 31, 2010, we had approximately Ps. 33,373 million outstanding under a number of bank
facilities bearing interest principally at fixed and variable rates. In May 2011, we entered into two revolving syndicated facilities  one for U.S.$2 billion and one for the Euro equivalent of U.S.$2 billion. They replaced a previous U.S.$2
billion credit facility that matured in April 2011. Loans under the facility bear interest at variable rates based on LIBOR and EURIBOR. The syndicated facilities limit our ability to incur secured debt, to effect a merger as a result of which the
surviving entity would not be América Móvil or Telcel, to sell substantially all of our assets or to sell control of Telcel. The facility does not allow us to impose any restrictions on the ability of Telcel to pay dividends or make
distributions to us. In addition, the bank facilities require us to maintain a consolidated ratio of debt to EBITDA not greater than 4.0 to 1.0 and a consolidated ratio of EBITDA to interest expense not less than 2.5 to 1.0.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Equipment financing facilities with support from export development agencies.    We have a number of equipment financing
facilities, under which export development agencies provide support for financing to purchase exports from their respective countries. These facilities are medium- to long-term, with periodic amortization. Some facilities bear interest at a fixed
rate while others bear interest at a spread over LIBOR. They are extended to us or to operating subsidiaries, in some cases with the guarantee of Telcel.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

All of the public securities issued by América Móvil in international and Mexican capital markets, and amounts due under our syndicated loan facility and export credit facilities, are
guaranteed by Telcel. At December 31, 2010, Telcel had, on an unconsolidated basis, unsecured and unsubordinated obligations of approximately Ps. 202.4 billion (U.S.$16.4 billion), excluding debt owed to us or our other subsidiaries. This
amount represents outstanding obligations of Telcel under guarantees of parent company and subsidiary indebtedness. In addition, at December 31, 2010, our subsidiaries other than Telcel had indebtedness of Ps. 100.7 billion (U.S.$8.2
billion).

Risk Management

We regularly assess our interest rate and currency exchange exposures in order to determine how to manage the risk associated with these exposures. In Mexico, we have indebtedness denominated in
currencies, principally the U.S. dollar, other than the currency of the operating environment. We use derivative financial instruments to adjust the resulting exchange rate exposures. We do not use derivatives to hedge the exchange rate exposures
that arise from having operations in different countries.



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We also use derivative financial instruments from time to time to adjust our exposure to
variable interest rates or to reduce our costs of financing. Our practices vary from time to time depending on our judgment of the level of risk, expectations as to exchange or interest rate movements and the costs of using derivative financial
instruments. We may stop using derivative financial instruments or modify our practices at any time.

As of December 31,
2010, we had the following derivatives positions, with an aggregate fair value of Ps. 4.9 billion:



| |  |  | U.S. dollar-Mexican peso cross currency swaps with a notional amount of U.S.$3,592 million with respect to our total U.S. dollar-denominated debt.
Under these swaps, we have replaced our obligation to make payment in U.S. dollars with an obligation to make payment in Mexican pesos.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | U.S. dollar-Mexican peso forwards for a total notional amount of U.S.$1,673 million to hedge our exposure to our U.S. dollar denominated debt.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Euro-Mexican peso cross currency swap with a notional amount of EUR 244 million with respect to our total Euro-denominated debt. Under this
swap we replaced our obligation to make payment in Euros with an obligation to make payment in Mexican pesos.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Euro-U.S. dollar cross currency swaps with a notional amount of EUR 123 million with respect to our total Euro-denominated debt. Under this
swap we replaced our obligation to make payment in Euros with an obligation to make payment in U.S. dollars.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | A Japanese Yen-U.S. dollar cross-currency swap with a notional amount of Yen¥ 13,000 million with respect to our total Japanese-Yen
denominated debt. Under this swap, we replaced our obligation to make payment in Japanese Yen with an obligation to make payment in U.S. dollars.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | A Japanese Yen-Mexican peso cross-currency swap with a notional amount of Yen¥ 19,891 million with respect to our total Japanese
Yen-denominated debt. Under this swap, we replaced our obligation to make payment in Japanese Yen with an obligation to make payment in Mexican pesos.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Swiss Franc-Euro cross currency swap with a notional amount of CHF230 million with respect to our total Swiss Franc-denominated debt. Under this swap,
we replaced our obligation to make payment in Swiss Franc with an obligation to make payment in Euros.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Mexican interest rate swaps with a notional amount of Ps.26.0 billion with respect to our total Mexican denominated debt. Under a portion of these
swaps (Ps. 25.3 billion), we replaced our obligation to make floating rate payments with obligations to make fixed rate payments. The other portion of these swaps (Ps. 700 million) replaces our obligation to make fixed rate payments with an
obligation to make floating rate payments.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Off-Balance Sheet Arrangements

As of December 31, 2010, we had no off-balance sheet arrangements that require disclosure under applicable SEC regulations.

Use of Estimates in Certain Accounting Policies

In preparing our financial statements, we make estimates concerning a variety of matters. Some of these matters are highly uncertain, and our estimates involve judgments we make based on the information
available to us. In the discussion below, we have identified several of these matters for which our financial presentation would be materially affected if either (1) we used different estimates that we could reasonably have used or (2) in
the future we change our estimates in response to changes that are reasonably likely to occur.

The discussion addresses only
those estimates that we consider most important based on the degree of uncertainty and the likelihood of a material impact if we used a different estimate. There are many other areas in which we use estimates about uncertain matters, but the
reasonably likely effect of changed or different estimates is not material to our financial presentation.



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Estimated useful lives of plant, property and equipment

We estimate the useful lives of particular classes of plant, property and equipment in order to determine the amount of depreciation
expense to be recorded in each period. Depreciation expense is a significant element of our costs and expenses, amounting in 2010 to Ps. 80.3 billion, or 17.6% of our operating costs and expenses. See Note 8 to our consolidated financial
statements.

We currently depreciate most of our telephone plant and equipment based on an estimated useful life determined
upon the expected particular conditions of operations and maintenance in each of the countries in which we operate. The estimates are based on our historical experience with similar assets, anticipated technological changes and other factors, taking
into account the practices of other telecommunications companies. We review estimated useful lives each year to determine whether they should be changed, and at times, we have changed them for particular classes of assets. We may shorten the
estimated useful life of an asset class in response to technological changes, changes in the market or other developments. This results in increased depreciation expense. In 2010, we recorded additional depreciation expense of Ps. 6.3 billion
resulting from the shortening of the useful lives of certain fixed-line equipment in Brazil, Colombia, Paraguay and Guatemala. See Note 8 to our consolidated financial statements.

Impairment of Long-Lived Assets, Intangible Assets and Goodwill

We have large amounts of long-lived assets on our balance sheet. Under IFRS, we are required to test long-lived assets for impairment
whenever events or circumstances indicate that the carrying amount may not be recoverable for plant, property and equipment and intangible assets. Impairment testing for goodwill is required to be performed on an annual basis. To estimate the fair
value of long-lived assets, we typically make various assumptions about the future prospects for the business to which the asset relates, consider market factors specific to that business and estimate future cash flows to be generated by that
business. Based on these assumptions and estimates as well as guidance provided by IFRS relating to the impairment of long-lived assets, we determine whether we need to take an impairment charge to reduce the net carrying value of the asset as
stated on our balance sheet to reflect its estimated fair value. Assumptions and estimates about future values and remaining useful lives are complex and often subjective. They can be affected by a variety of factors, including external factors,
such as industry and economic trends, and internal factors, such as changes in our business strategy and our internal forecasts. Different assumptions and estimates could materially impact our reported financial results. More conservative
assumptions of the anticipated future benefits from these businesses could result in impairment charges, which would decrease net income and result in lower asset values on our balance sheet. Conversely, less conservative assumptions could result in
smaller or no impairment charges, higher net income and higher asset values.

Deferred Taxes

We are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves the
jurisdiction-by-jurisdiction estimation of actual current tax exposure and the assessment of temporary differences resulting from the differing treatment of certain items, such as accruals and amortization, for tax and financial reporting purposes,
as well as net operating loss carryforwards and other tax credits. These items result in deferred tax assets and liabilities, which are included in our consolidated balance sheets. We must assess in the course of our tax planning procedures the
fiscal year of the reversal of our deferred tax assets and liabilities, and if there will be future taxable profits in those periods to support the recognition of the deferred tax assets. Significant management judgment is required in determining
our provisions for income taxes, deferred tax assets and liabilities. The analysis is based on estimates of taxable income in the jurisdictions in which the group operates and the period over which the deferred tax assets and liabilities will be
recoverable or settled. If actual results differ from these estimates, or we adjust these estimates in future periods, our financial position and results of operations may be materially affected.

We record deferred tax assets based on the amount that we believe is more likely than not to be realized. In assessing the future
realization of deferred tax assets, we consider future taxable income and ongoing tax



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planning strategies. In the event that our estimates of projected future taxable income and benefits from tax planning strategies are lowered, or changes in current tax regulations are enacted
that would impose restrictions on the timing or extent of our ability to utilize the tax benefits of net operating loss carry-forwards in the future, an adjustment to the recorded amount of deferred tax assets would be made, with a related charge to
income.

Accruals

Accruals are recorded when, at the end of the period, we have a present obligation as a result of past events, whose settlement requires an outflow of resources that is considered probable and can be
measured reliably. This obligation may be legal or constructive, arising from, but not limited to, regulation, contracts, common practice or public commitments, which have created a valid expectation for third parties that we will assume certain
responsibilities. The amount recorded is the best estimation performed by our management in respect of the expenditure that will be required to settle the obligations, considering all the information available at the date of our financial
statements, including the opinion of external experts, such as legal advisors or consultants. Accruals are adjusted to account for changes in circumstances for ongoing matters and the establishment of additional accruals for new matters.

If we are unable to reliably measure the obligation, no accrual is recorded and information is then presented in the notes to our
consolidated financial statements.

Because of the inherent uncertainties in this estimation, actual expenditures may be
different from the originally estimated amount recognized.

Labor Obligations

We recognize liabilities on our balance sheet and expenses in our income statement to reflect our obligations related to our
post-retirement seniority premiums, pension and retirement plans in the countries in which we operate and offer defined contribution and benefit pension plans. The amounts we recognize are determined on an actuarial basis that involves many
estimates and accounts for post-retirement and termination benefits in accordance with IFRS.

We use estimates in four
specific areas that have a significant effect on these amounts: (a) the rate of return we assume our pension plan will achieve on its investments, (b) the rate of increase in salaries that we assume we will observe in future years,
(c) the discount rates that we use to calculate the present value of our future obligations and (d) the expected rate of inflation. The assumptions we have applied are identified in Note 12 to our audited consolidated financial
statements. These estimates are determined based on actuarial studies performed by independent experts using the projected unit-credit method. The latest actuarial computation was prepared as of December 2010. We review the estimates each year, and
if we change them, our reported expense for pension costs may increase or decrease according to market conditions.

Allowance for Doubtful Accounts

We maintain an allowance for doubtful accounts for estimated losses resulting from the failure of our customers, distributors and cellular operators to make required payments. We base these estimates on
the individual conditions of each of the markets in which we operate that may impact the collectability of accounts. In particular, in making these estimates we take into account (i) with respect to accounts with customers, the number of days
since the calls were made, (ii) with respect to accounts with distributors, the number of days invoices are overdue and (iii) with respect to accounts with cellular operators, both the number of days since the calls were made and any
disputes with respect to such calls. The amount of loss, if any, that we actually experience with respect to these accounts may differ from the amount of the allowance maintained in connection with them.



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|Item 6. | Directors, Senior Management and Employees
|------- | ------------------------------------------

MANAGEMENT

Directors

Our Board of Directors has broad authority to manage our company. The Board of Directors is supported by our committees, especially by our
Audit and Corporate Practices Committee, which is comprised by independent members. In particular, the Board of Directors must approve prior opinions of the competent committee, among others:



| |  |  | our non-ordinary course transactions with related parties;
| | - |  | ----------------------------------------------------------



| |  |  | the use and disposition of the companys assets;
| | - |  | ------------------------------------------------



| |  |  | certain material transactions such as (a) transactions not in the ordinary course of business, (b) transactions representing an investment
greater than 5% of the companys assets on a consolidated basis and (c) transactions involving guarantees or the incurrence of financial obligations for more than 5% of the companys assets on a consolidated basis;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | executive and director compensation;
| | - |  | ------------------------------------



| |  |  | appoint and discharge our chief executive officer; and
| | - |  | ------------------------------------------------------



| |  |  | waivers for board members, executives and other persons with influence on the company, to benefit from business opportunities pertaining to the
company.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------

The company must publicly disclose any case in which the resolution of the board differs from the
opinion of the committee regarding any of these matters.

Additionally, in the event that a person or group of persons intend
to acquire an amount of shares equal or exceeding 10% of our voting stock, our Board of Directors authorization is required. In the event that our Board of Directors rejects the relevant authorization, it shall appoint a substitute acquirer.

Our bylaws provide for the Board of Directors to consist of between five and twenty one directors and allow for the
appointment of an equal number of alternate directors. Directors need not be shareholders. A majority of our directors and a majority of the alternate directors must be Mexican citizens and elected by Mexican shareholders. A majority of the holders
of the AA Shares and A Shares voting together elect a majority of the directors and alternate directors, provided that any holder or group of holders of at least 10% of the total AA Shares and A Shares is entitled to name one director and an
alternate director. Two directors and two alternate directors, if any, are elected by a majority vote of the holders of L Shares. Each alternate director may attend meetings of the Board of Directors and vote in the absence of a corresponding
director. Directors and alternate directors are elected or ratified at each annual general meeting of shareholders and each annual ordinary special meeting of holders of L Shares, and each serves until a successor is elected and takes office. In
accordance with the Mexican Securities Market Law (Ley del Mercado de Valores, or the Mexican Securities Market Law), shareholders are required to make a determination as to the independence of our directors, though the CNBV may
challenge this determination. Pursuant to our bylaws and the Mexican Securities Market Law, at least 25% of our directors must be independent. In order to have a quorum for a meeting of the Board of Directors, a majority of those present must be
Mexican nationals.

All of the current members of the Board of Directors, the Executive Committee, the Audit and Corporate
Practices Committee, and the Operations in Puerto Rico and the United States of America Committee, as well as the Corporate Secretary and the Corporate Pro-Secretary, were elected or ratified at the annual general shareholders meeting held on
April 27, 2011, with twelve directors elected by the AA Shares and A Shares voting together and two directors elected by the L Shares. No alternate directors were appointed.



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Our bylaws provide that the members of the Board of Directors are appointed for terms of one
year. Pursuant to Mexican law, members of the Board continue in their positions after the expiration of their terms for up to an additional 30 day period if new members are not appointed. Furthermore, in certain circumstances provided under the
Mexican Securities Law, the Board of Directors may appoint temporary directors who then may be ratified or substituted by the shareholders meetings. The names and positions of the members of the Board elected and ratified at the annual general
shareholders meeting held on April 27, 2011, their year of birth, and information concerning their committee membership and principal business activities outside América Móvil are as follows:



|                                                                                                                               |  |                                                                           |  |                                                                                                                                                                                                                                                                                     
|------------------------------------------------------------------------------------------------------------------------------ |  | ------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Directors elected by holders of Series AA and Series A Shares:                                                                
|                                                                                                                               |  |                                                                          
|Patrick Slim Domit                                                                                                             |  | Born:                                                                     |  | 1969                                                                                                                                                                                                                                                                                
|Co-Chairman and Member of the
Executive Committee and the
Operations in Puerto Rico and the
United States of America Committee |  | First elected:Term expires:
Principal occupation: Other
directorships:    |  | 2004 2012
Co-Chairman of our Board of Directors Director
of Grupo Carso, S.A.B. de C.V., Impulsora del Desarrollo y el Empleo en América Latina, S.A.B. de C.V. and Telmex Chief Executive Officer of Grupo Carso, S.A.B. de C.V. and Vice President of Commercial Markets of
Telmex
|                                                                                                                               |  |                                                                          
|                                                                                                                               |  | Business experience:                                                      |  | Commercial Markets of Telmex                                                                                                                                                                                                                                                        
|                                                                                                                               |  |                                                                          
|Carlos Slim Domit                                                                                                              |  | Born:                                                                     |  | 1967                                                                                                                                                                                                                                                                                
|Co-Chairman and Member of the Executive Committee and the Operations in Puerto Rico and the United States of America Committee |  | First elected:Term expires:
Principal occupation:                         |  | 2011 2012
Chairman of the Board of Directors of Grupo Carso, S.A.B. de C.V.                                                                                                                                                                                                         
|                                                                                                                               |  |                                                                          
|                                                                                                                               |  | Other directorships:                                                      |  | Director of Grupo Carso, S.A.B. de C.V. and Grupo Sanborns, S.A. de C.V. and Chairman of the Board of Directors of CGT, Telmex and Telmex Internacional                                                                                                                             
|                                                                                                                               |  |                                                                          
|                                                                                                                               |  | Business experience:                                                      |  | Chief Executive Officer of Sanborn Hermanos, S.A. de C.V.                                                                                                                                                                                                                           
|                                                                                                                               |  |                                                                          
|Daniel Hajj Aboumrad                                                                                                           |  | Born:                                                                     |  | 1966                                                                                                                                                                                                                                                                                
|Director and Member of the Executive Committee and the Operations in Puerto Rico and the United States of America Committee    |  | First elected:Term expires:
Principal occupation: 
  Other
directorships: |  | 2000
2012 Chief Executive Officer of América
Móvil  Director of Grupo Carso, S.A.B. de C.V., Telmex and
CGT                                                                                                                                                                         
|                                                                                                                               |  |                                                                          
|                                                                                                                               |  |                                                                          
|                                                                                                                               |  | Business experience:                                                      |  | Chief Executive Officer of Hulera Euzkadi, S.A. de C.V.                                                                                                                                                                                                                             



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|                                                                                                                                                         |  |                                                   |  |                                                                                                                                                                                  
|-------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                         |  |                                                  
|Alejandro Soberón Kuri                                                                                                                                   |  | Born:                                             |  | 1960                                                                                                                                                                             
|Director, Chairman of the Audit and
Corporate Practices Committee and
Member of the Operations in Puerto
Rico and the United States of America
Committee |  | First elected:Term expires:
Principal occupation: |  | 2000 2012
Chief Executive Officer of Corporación Interamericana de Entretenimiento, S.A.B. de C.V.                                                                               
|                                                                                                                                                         |  | Other directorships:                              |  | Chairman of Corporación Interamericana de Entretenimiento, S.A.B. de C.V. and Director of Banco Nacional de México, S.A.                                                         
|                                                                                                                                                         |  | Business experience:                              |  | Various positions at Interamericana de Entretenimiento, S.A.B. de C.V.                                                                                                           
|Carlos Bremer Gutiérrez                                                                                                                                  |  | Born:                                             |  | 1960                                                                                                                                                                             
|Director and Member of the Audit and
Corporate Practices Committee and the
Operations in Puerto Rico and the
United States of America Committee          |  | First elected:Term expires:
Principal occupation: |  | 2004 2012
Chief Executive Officer of Value, S.A. de C.V., Casa de Bolsa                                                                                                          
|                                                                                                                                                         |  | Other directorships:                              |  | Director of Value Grupo Financiero, S.A.B. de C.V. and Value S.A. de C.V., Casa de Bolsa                                                                                         
|                                                                                                                                                         |  | Business experience:                              |  | Chief Operating Officer of Abaco Casa de Bolsa, S.A. de C.V.                                                                                                                     
|Rayford Wilkins, Jr.                                                                                                                                     |  | Born:                                             |  | 1951                                                                                                                                                                             
|Director and Member of the Executive
Committee                                                                                                           |  | First elected:Term expires:
Principal occupation: |  | 2005 2012
Chief Executive Officer of the AT&T Diversified Businesses Division                                                                                                    
|                                                                                                                                                         |  | Other directorships:                              |  | Director of Valero Energy Foundation, Tiger Woods Foundation and National Urban League                                                                                           
|                                                                                                                                                         |  | Business experience:                              |  | Various positions in the wireless industry at SBC Group                                                                                                                          
|Michael J. Viola                                                                                                                                         |  | Born:                                             |  | 1954                                                                                                                                                                             
|Director                                                                                                                                                 |  | First elected:Term expires:
Principal occupation: |  | 2009 2012
Senior Vice President of Corporate Finance AT&T, Inc.                                                                                                                  
|                                                                                                                                                         |  | Other directorships:                              |  | Director of Telmex                                                                                                                                                               
|                                                                                                                                                         |  | Business experience:                              |  | Various positions in the wireless industry at AT&T                                                                                                                               
|Ernesto Vega Velasco                                                                                                                                     |  | Born:                                             |  | 1937                                                                                                                                                                             
|Director and Member of the Audit and
Corporate Practices Committee and the
Operations in Puerto Rico and the
United States of America Committee          |  | First elected:Term expires:
Principal occupation  |  | 2007 2012
In retirement. Member of the board of directors and audit and corporate practices, planning and finance and evaluation and compensation committees of
certain companies



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|                                                                                                |  |                                                   |  |                                                                                                                                                                                                                                                                                                                                   
|----------------------------------------------------------------------------------------------- |  | ------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                |  | Other directorships:                              |  | Chairman of Wal-Mart de México, S.A.B. de C.V. and Director of Kuo, S.A.B. de C.V., Dine, S.A.B. de C.V., Inmuebles Carso S.A.B. de C.V., Impulsora de Desarrollo y el Empleo
en América Latina, S.A.B. de C.V. and Grupo Aeroportuario del Pacífico, S.A.B. de C.V., and Alternate Director of Industrias Peñoles, S.A.B. de C.V.
|                                                                                                |  |                                                  
|                                                                                                |  | Business experience:                              |  | Since 1971, various positions in Desc Group, including Corporate Vice-president                                                                                                                                                                                                                                                   
|                                                                                                |  |                                                  
|Santiago Cosío Pando                                                                            |  | Born:                                             |  | 1973                                                                                                                                                                                                                                                                                                                              
|Director and Member of the Operations in Puerto Rico and the United States of America Committee |  | First elected:Term expires:
Principal occupation: |  | 2008 2012
President of Grupo Pando, S.A. de C.V.                                                                                                                                                                                                                                                                                  
|                                                                                                |  |                                                  
|                                                                                                |  | Business experience:                              |  | Various positions in Grupo Pando, S.A. de C.V.                                                                                                                                                                                                                                                                                    
|                                                                                                |  |                                                  
|Arturo Elías Ayub                                                                               |  | Born:                                             |  | 1966                                                                                                                                                                                                                                                                                                                              
|Director and Member of the Operations in Puerto Rico and the United States of
America Committee |  | First elected:Term expires:
Principal occupation: |  | 2011 2012
Head of Strategic Alliances, Communications and Institutional Relations of Telmex; Chief Executive Officer of Fundación Telmex                                                                                                                                                                                          
|                                                                                                |  |                                                  
|                                                                                                |  | Other directorships:                              |  | Director of Grupo Sanborns, S.A.B. de C.V., Grupo Carso, S.A.B. de C.V., CGT, Sears Roebuck de México and TM & MS LLC Chief Executive Officer of Sociedad
Comercial                                                                                                                                                               
|                                                                                                |  |                                                  
|                                                                                                |  | Business experience:                              |  | Cadena, President of Pastelería Francesa (El Globo) and President of Club Universidad Nacional, A.C.                                                                                                                                                                                                                              
|                                                                                                |  |                                                  
|Oscar Von Hauske Solís                                                                          |  | Born:                                             |  | 1957                                                                                                                                                                                                                                                                                                                              
|Director and Member of the Operations in Puerto Rico and the United States of
America Committee |  | First elected:Term expires:
Principal occupation: |  | 2011 2012
Chief Fixed Line Operations Officer of América Móvil                                                                                                                                                                                                                                                                    
|                                                                                                |  |                                                  
|                                                                                                |  | Other directorships:                              |  | Director of Telmex and Telmex Internacional                                                                                                                                                                                                                                                                                       
|                                                                                                |  |                                                  
|                                                                                                |  | Business experience:                              |  | Chief Executive Officer of Telmex Internacional, Chief Systems and Telecommunications Officer of Telmex and Head of Finance at Grupo Condumex, S.A. de C.V.                                                                                                                                                                       
|                                                                                                |  |                                                  
|Louis C. Camilleri                                                                              |  | Born:                                             |  | 1955                                                                                                                                                                                                                                                                                                                              
|Director and Member of the Operations in Puerto Rico and the United States of
America Committee |  | First elected:Term expires:
Principal occupation: |  | 2011 2012
Chief Executive Officer of Philip Morris International                                                                                                                                                                                                                                                                  



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|                                                                                                                                                |  |                                                   |  |                                                                                                                                                               
|----------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                |  | Other directorships:                              |  | Chairman of Philip Morris International                                                                                                                       
|                                                                                                                                                |  |                                                  
|                                                                                                                                                |  | Business experience:                              |  | Chairman and Chief Executive Officer of Altria and various positions in Philip Morris International.                                                          
|                                                                                                                                               
|Directors elected by holders of Series L Shares:                                                                                               
|                                                                                                                                                |  |                                                  
|Pablo Roberto González Guajardo                                                                                                                 |  | Born:                                             |  | 1967                                                                                                                                                          
|Director and Member of the Audit and
Corporate Practices Committee and the
Operations in Puerto Rico and the
United States of America Committee |  | First elected:Term expires:
Principal occupation: |  | 2007 2012
Chief Executive Officer of Kimberly Clark de Mexico, S.A.B. de C.V.                                                                                 
|                                                                                                                                                |  |                                                  
|                                                                                                                                                |  | Other directorships:                              |  | Director of Kimberly Clark de Mexico, S.A.B. de C.V. and Acciones y Valores Banamex, S.A., Casa de Bolsa                                                      
|                                                                                                                                                |  |                                                  
|                                                                                                                                                |  | Business experience:                              |  | Various positions in the Kimberly Clark Corporation and Kimberly Clark de México, S.A.B. de C.V.                                                              
|                                                                                                                                                |  |                                                  
|David Ibarra Muñoz                                                                                                                              |  | Born:                                             |  | 1930                                                                                                                                                          
|Director and Member of the Operations in Puerto Rico and the United States of America Committee                                                 |  | First elected:Term expires:
Principal occupation: |  | 2000 2012
Retired                                                                                                                                             
|                                                                                                                                                |  |                                                  
|                                                                                                                                                |  | Other directorships:                              |  | Director of Grupo Financiero Inbursa, S.A.B. de C.V., Impulsora del Desarrollo y el Empleo en América Latina, S.A.B. de C.V. and Grupo Carso, S.A.B. de C.V.  
|                                                                                                                                                |  |                                                  
|                                                                                                                                                |  | Business experience:                              |  | Chief Executive Officer of Nacional Financiera, S.N.C., served in the Mexican Ministry of Finance and Public Credit (Secretaría de Hacienda y Crédito
Público)

Alejandro Cantú Jiménez, our General Counsel, serves as Corporate Secretary and
Rafael Robles Miaja as Corporate Pro-Secretary.

Daniel Hajj Aboumrad and Arturo Elías Ayub are the sons-in-law of
Carlos Slim Helú and brothers-in-law of Patrick Slim Domit and Carlos Slim Domit. Patrick Slim Domit and Carlos Slim Domit are sons of Carlos Slim Helú.

Executive Committee

Our bylaws provide that the Executive Committee may
generally exercise the powers of the Board of Directors, with certain exceptions. In addition, the Board of Directors is required to consult the Executive Committee before deciding on certain matters set forth in the bylaws, and the Executive
Committee must provide its views within ten calendar days following a request from the Board of Directors, the Chief Executive Officer or the Chairman of the Board of Directors. If the Executive Committee is unable to make a recommendation within
ten calendar days or if a majority of the Board of Directors or any other corporate body duly acting within its mandate determines in good faith that action cannot be deferred until the Executive Committee makes a recommendation, the Board of
Directors is authorized to act without such recommendation. The Executive Committee may not delegate its powers to special delegates or attorneys-in-fact.



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The Executive Committee is elected from among the directors and alternate directors by a
majority vote of the holders of common shares (AA Shares and A Shares). The Executive Committee is currently comprised of four members. The majority of its members must be Mexican citizens and elected by Mexican shareholders. Three members of the
Executive Committee are named by our Mexican controlling shareholders and one member by AT&T, Inc. (formerly SBC International, Inc.). See Major Shareholders under Item 7. The current members of the Executive Committee are
Messrs. Patrick Slim Domit, Carlos Slim Domit and Daniel Hajj Aboumrad, named by the Mexican controlling shareholders, and Mr. Rayford Wilkins, Jr., named by AT&T.

Audit and Corporate Practices Committee

The Audit and Corporate Practices
Committee consists of Messrs. Alejandro Soberón Kuri, Chairman, Ernesto Vega Velasco, Pablo Roberto González Guajardo and Carlos Bremer Gutiérrez. The mandate of the Audit and Corporate Practices Committee is to assist our Board
of Directors in overseeing our operations, establish and monitor procedures and controls in order to ensure that the financial information we distribute is useful, appropriate and reliable and accurately reflects our financial position. In
particular, the Audit and Corporate Practices Committee is required to, among other things:



| |  |  | provide opinions to the Board of Directors on certain matters as provided by the Mexican Securities Market Law;
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | call shareholders meetings and recommend inclusion of matters it deems appropriate on the agenda;
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | inform the Board of Directors of our internal controls and their adequacy;
| | - |  | --------------------------------------------------------------------------



| |  |  | select our auditors, review the scope and terms of their engagement, and determine their compensation;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | monitor the performance of our auditors and re-evaluate the terms of their engagement;
| | - |  | --------------------------------------------------------------------------------------



| |  |  | recommend procedures for preparing financial statements and internal controls;
| | - |  | ------------------------------------------------------------------------------



| |  |  | monitor internal controls and accounting for specified types of matters;
| | - |  | ------------------------------------------------------------------------



| |  |  | propose procedures for the preparation of financial statements for internal use that are consistent with the published financial statements;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | assist the Board of Directors in preparing reports provided by the Mexican Securities Market Law;
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | discuss with the auditors the annual financial statements and the accounting principles being applied in the annual and the interim financial
statements and based on such discussions, recommend their approval to the Board of Directors;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | resolve disagreements between our management and auditors relating to our financial statements;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | request the opinion of independent experts, when deemed appropriate or when required by law;
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | approve services to be provided by our auditors, or establish policies and procedures for the pre-approval of services by our auditors;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------



| |  |  | obtain from our auditors a report that includes a discussion of critical accounting policies used by the Company, any alternative accounting treatments
for material items that have been discussed by management with our auditor, and any other written communications between our auditors and management;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | report to the Board of Directors on its activities;
| | - |  | ---------------------------------------------------



| |  |  | develop procedures for the receipt, retention and treatment of complaints regarding accounting, internal controls or auditing matters, including for
the confidential submission of concerns regarding such matters by employees;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | evaluate the performance of the external auditors;
| | - |  | --------------------------------------------------



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| |  |  | review and discuss the financial statements of the company and advise the board of directors of the committees recommendations for approval of
such financial statements;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | receive and analyze recommendations and observations to its functions from shareholders, members of the board of directors and senior management, and
the authority to act upon such recommendations and observations;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | recommend to the Board of Directors procedures for the selection and succession of our chief executive officer and our principal executives;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | propose criteria for evaluating executive performance;
| | - |  | ------------------------------------------------------



| |  |  | analyze the proposals of the chief executive officer concerning the structure and amount of compensation for our senior executive and raise them with
the Board of Directors;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | review new executive compensation programs and the operations of existing programs;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | establish contracting practices to avoid excessive payments to executives;
| | - |  | --------------------------------------------------------------------------



| |  |  | assist the Board of Directors in developing appropriate personnel policies;
| | - |  | ---------------------------------------------------------------------------



| |  |  | participate with the Board of Directors in developing a plan for employees to invest in our L Shares and review the implementation of such plan; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | perform any other functions the Board of Directors may delegate to the Audit and Corporate Practices Committee.
| | - |  | ---------------------------------------------------------------------------------------------------------------

In addition, pursuant to our bylaws, the Audit and Corporate Practices Committee is in charge of our corporate governance functions under
the Mexican securities laws and regulations and is required to submit an annual report to the Board of Directors with respect to our corporate and audit practices. The Audit and Corporate Practices Committee shall request opinions of our executive
officers for purposes of preparing the annual report. The Board of Directors must seek the opinion of the Audit and Corporate Practices Committee regarding any transaction with a related party that is outside the ordinary course of our business as
defined under the Mexican Securities Market Law. Each member of the Audit and Corporate Practices Committee is independent, as independence is determined by our shareholders pursuant to the Mexican Securities Market Law and as defined under Rule
10A-3 under the U.S. Securities and Exchange Act of 1934.

Operations in Puerto Rico and the United States of America Committee

The Operations in Puerto Rico and the United States of America Committee consists of Messrs. Patrick Slim Domit, Carlos
Slim Domit, Daniel Hajj Aboumrad, Arturo Elías Ayub, Oscar Von Hauske Solís, Ernesto Vega Velasco, Pablo Roberto Gonzalez Guajardo, David Ibarra Muñoz, Alejandro Soberón Kuri, Carlos Bremer Gutiérrez, Louis C.
Camilleri and Santiago Cosío Pando. The mandate of the Operations in Puerto Rico and the United States of America Committee is to act in the name and on behalf of the Companys Board of Directors in respect of the Companys Puerto
Rican subsidiary, Telpri (including its subsidiaries); and the Companys U.S. subsidiary Tracfone (including its subsidiaries). To perform this function, the Committee may rely on the internal structures of the Company and its subsidiaries.



84



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##### Table of Contents

Senior Management

The names, responsibilities and prior business experience of our senior officers are as follows:



|                                    |  |                      |  |                                                                                                                                                                                                                    
|----------------------------------- |  | -------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Daniel Hajj Aboumrad                |  | Appointed:           |  | 2000                                                                                                                                                                                                               
|Chief Executive Officer             |  | Business experience: |  | Director of Telmexs Mexican subsidiaries, Chief Executive Officer of Companía Hulera Euzkadi, S.A. de C.V.                                                                                                        
|                                    |  |                     
|Carlos José García Moreno Elizondo  |  | Appointed:           |  | 2001                                                                                                                                                                                                               
|Chief Financial Officer             |  | Business experience: |  | General Director of Public Credit at the Secretaría de Hacienda y Crédito Público, Managing Director of UBS Warburg, Associate Director of financing at
Petróleos Mexicanos (Pemex)                                
|                                    |  |                     
|Carlos Cárdenas Blásquez            |  | Appointed:           |  | 2000                                                                                                                                                                                                               
|Chief Wireless Operations Officer   |  | Business experience: |  | Various positions at Telmex, including Operating Manager for the paging service company Buscatel, S.A. de C.V. and Vice-President of operations for Telmex USA, Manager at Grupo
Financiero Inbursa, S.A.B. de C.V.
|                                    |  |                     
|Oscar Von Hauske Solís              |  | Appointed:           |  | 2010                                                                                                                                                                                                               
|Chief Fixed Line Operations Officer |  | Business experience: |  | Chief Executive Officer of Telmex Internacional, Chief Systems and Telecommunications Officer of Telmex and Head of Finance at Grupo Condumex, S.A. de C.V.                                                        
|                                    |  |                     
|Alejandro Cantú Jiménez             |  | Appointed:           |  | 2001                                                                                                                                                                                                               
|General Counsel                     |  | Business experience: |  | Mijares, Angoitia, Cortés y Fuentes, S.C.                                                                                                                                                                          

Chief
Executive Officer

Under our bylaws, the chief executive officer is entrusted with the performance, conduct and execution
of our day-to-day business activities. The chief executive officer is responsible for recommending our internal control and internal audit guidelines and presenting business strategies for the approval of the Board of Directors. The chief executive
officer is also required to present an annual report to the Board of Directors discussing, among other things:



| |  |  | the operations of the Company in the relevant year, as well as the policies followed and, if applicable, the principal pending projects;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the financial condition of the Company;
| | - |  | ---------------------------------------



| |  |  | the recent results of the Company; and
| | - |  | --------------------------------------



| |  |  | the changes in the Companys financial condition.
| | - |  | -------------------------------------------------



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##### Table of Contents

Compensation of Directors and Senior Management

The aggregate compensation paid to our directors (including compensation paid to members of our Audit and Corporate Practices Committee)
and senior management in 2010 was approximately Ps. 3 million and Ps. 49.9 million, respectively. None of our directors is a party to any contract with us or any of our subsidiaries that provides for benefits upon termination of
employment. We do not provide pension, retirement or similar benefits to our directors in their capacity as directors. Our executive officers are eligible for retirement and severance benefits required by Mexican law on the same terms as all other
employees, and we do not separately set aside, accrue or determine the amount of our costs that is attributable to executive officers.

Share Ownership of Directors and Senior Management

The co-chairman of our Board of Directors, Patrick Slim Domit, holds 444 million (or 3.8%) of our AA Shares and 911 million (or 3.3%) of our L Shares directly. The co-chairman of our Board of
Directors, Carlos Slim Domit, holds 444 million (or 3.8%) of our AA Shares and 783 million (or 2.8%) of our L Shares directly. In addition, according to beneficial ownership reports filed with the SEC, the Slim Family may be deemed to
control us through their beneficial ownership held by a trust and another entity and their direct ownership of shares. See Major Shareholders under Item 7 and BylawsShare Capital under Item 10.

Except as described above, according to the ownership reports of shares or other securities or rights in our shares prepared by our
directors and members of senior management and provided to us, none of our directors or executive officers is the beneficial owner of more than 1% of any class of our capital stock. We request our directors and members of senior management to
provide ownership information of Company shares or other securities or rights in our shares on a yearly basis.



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##### Table of Contents

EMPLOYEES

The following table sets forth the number of employees and a breakdown of employees by main category of activity and geographic location
as of the end of each year in the three-year period ended December 31, 2010:



|                      |  |              |        |  |      |  |        |      |  |  |         | 
|--------------------- |  | ------------ | ------ |  | ---- |  | ------ | ---- |  |  | ------- | 
|                      |  | December 31, |       
|                      |  | 2008         |        |  | 2009 |  |        | 2010 | 
|Number of employees   |  |              | 52,879 |  |      |  | 53,661 |      |  |  | 148,058 | 
|                      |  |              |       
|Category of activity: |  |              |        |  |      |  |        |      |  |  |         | 
|Wireless              |  |              | 41,365 |  |      |  | 42,968 |      |  |  | 46,117  | 
|Fixed                 |  |              | 11,514 |  |      |  | 10,693 |      |  |  | 101,941 | 
|                      |  |              |       
|Geographic location:  |  |              |        |  |      |  |        |      |  |  |         | 
|Mexico                |  |              | 16,526 |  |      |  | 17,347 |      |  |  | 70,917  | 
|South America         |  |              | 20,360 |  |      |  | 21,133 |      |  |  | 60,688  | 
|Central America       |  |              | 7,869  |  |      |  | 7,384  |      |  |  | 8,102   | 
|Caribbean             |  |              | 7,530  |  |      |  | 7,163  |      |  |  | 7,676   | 
|United States         |  |              | 594    |  |      |  | 634    |      |  |  | 675     | 

As of
December 31, 2010, the Progressive Union of Communication and Transport Workers of the Mexican Republic (Sindicato Progresista de Comunicaciones y Transportes de la República Mexicana) represented approximately 87% of the
employees of Telcel. All management positions at Telcel are held by non-union employees. Salaries and certain benefits are renegotiated every year. Under our labor agreements and Mexican labor law, we are obligated to pay seniority premiums to
retiring Mexican employees and pension and death benefits to retired Mexican employees. Mexican retirees are entitled to receive pension increases whenever salary increases are granted to current employees.

Some of our foreign subsidiaries, including our Brazilian subsidiaries, Telgua, Enitel, CTE, Claro Chile, AMX Argentina, Telmex Colombia
and Telpri, also have active employee unions.

We believe that we have good current relations with our workforce.



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|Item 7. | Major Shareholders and Related Party Transactions
|------- | -------------------------------------------------

MAJOR SHAREHOLDERS

The following table sets
forth our capital structure as of April 30, 2011. The table does not give effect to a 2-for-1 stock split approved by our shareholders in April 2011, which will become effective on a date to be determined in the second half of 2011.



|                         |  |                           |        |  |                   |  |       |                                 |  |  |       |  
|------------------------ |  | ------------------------- | ------ |  | ----------------- |  | ----- | ------------------------------- |  |  | ----- | -
|Series                   |  | Number ofShares(millions) |        |  | Percent ofCapital |  |       | CombinedA Sharesand
AAShares(*) | 
|L Shares (no par value)  |  |                           | 27,649 |  |                   |  | 69.6  | %                               |  |  |      |  
|AA Shares (no par value) |  |                           | 11,712 |  |                   |  | 29.5  | %                               |  |  | 96.8  | %
|A Shares (no par value)  |  |                           | 387    |  |                   |  | 0.9   | %                               |  |  | 3.2   | %
|                         |  |                           |        |  |                   |  |       |                                 |  |  |       |  
|Total                    |  |                           | 39,748 |  |                   |  | 100.0 | %                               |  |  | 100.0 | %
|                         |  |                           |        |  |                   |  |       |                                 |  |  |       |  



|(*) | The AA Shares and A Shares of AMX are entitled to elect together a majority of our directors. Percentage figures for each shareholder are based on the number of shares
outstanding as of the date of its most recently filed beneficial ownership report.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

According to reports of
beneficial ownership of our shares filed with the SEC on March 7, 2011, the Slim Family may be deemed to control us through their beneficial ownership held by a Mexican trust that holds AA Shares and L Shares for their benefit (the Family
Trust) and Inmobiliaria Carso and their direct ownership of shares. See Directors and Executive Committee under Item 6 and Related Party Transactions under this Item 7.

The following table identifies each owner of more than 5% of any series of our shares as of April 30, 2011. Except as described in
the table below and the accompanying notes, we are not aware of any holder of more than 5% of any series of our shares. Figures below do not include the total number of L Shares that would be held by each shareholder upon conversion of AA Shares or
A Shares, as provided for under our bylaws. See BylawsShare Capital under Item 10. Holders of five percent or more of any class of our shares have the same voting rights with respect to their shares as do holders of less than
five percent of the same class.



|                      |  |                       |       |  |                |  |      |  
|--------------------- |  | --------------------- | ----- |  | -------------- |  | ---- | -
|Shareholder           |  | SharesOwned(millions) |       |  | PercentofClass | 
|AA Shares:            |  |                       |       |  |                |  |      |  
|Family Trust(1)       |  |                       | 5,447 |  |                |  | 46.5 | %
|AT&T Inc.(2)          |  |                       | 2,870 |  |                |  | 24.5 | %
|Inmobiliaria Carso(3) |  |                       | 696   |  |                |  | 5.9  | %
|                      |  |                      
|L Shares              |  |                       |       |  |                |  |      |  
|Family Trust(1)       |  |                       | 2,999 |  |                |  | 10.7 | %



|(1) | Based on beneficial ownership reports filed with the SEC on March 7, 2011, the Family Trust is a Mexican trust which directly holds AA Shares and L Shares for the
benefit of the members of the Slim Family. Members of the Slim Family, including Carlos Slim Helú, directly own an aggregate of 1,779 million AA Shares and 4,729 million L Shares representing 15.2% and 16.9%, respectively, of each
series. According to such reports, none of these members of the Slim Family individually directly own more than 5% of any class of our shares. Percentage figures are based on the number of shares outstanding as of the date of the most recently filed
beneficial ownership report.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Based on beneficial ownership reports filed with the SEC on March 1, 2011, AT&T also owned approximately 752 million L Shares. In accordance with Mexican
law and our bylaws, AT&T holds its AA Shares and L Shares through a Mexican trust. See BylawsLimitations on Share Ownership under Item 10. Percentage figures are based on the number of shares outstanding as of the date of
the most recently filed beneficial ownership report.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Inmobiliaria Carso, S.A. de C.V. is a sociedad anónima de capital variable organized under the laws of Mexico. Inmobiliaria Carso is a real estate holding
company. The Slim Family beneficially owns, directly or indirectly, a majority of the outstanding voting equity securities of Inmobiliaria Carso. Percentage figures are based on the number of shares outstanding as of the date of the most recently
filed beneficial ownership report.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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The Family Trust is party to an agreement dated February 28, 2011 (the
Shareholders Agreement) with AT&T International, Inc. (AT&TI), which is a subsidiary of AT&T, Inc. (AT&T) and the trust through which AT&TI owns AA Shares. The Shareholders Agreement governs
the ownership and voting of any AA Shares owned from time to time by the Family Trust and AT&TI. Among other things, the Shareholders Agreement subjects certain transfers of AA Shares by either party to a right of first offer in favor of the
other party and grants certain tag along and drag along rights, which, in the event the Family Trust sells a majority of its AA Shares to a third party permit (i) AT&TI to sell the same portion of its AA Shares to such third party in
connection with the sale of such AA Shares of the Family Trust and (ii) the Family Trust to require AT&TI to sell the same portion of its AA Shares to such third party as the Family Trust is selling to such third party. However, the right
of first offer and the tag along and drag along rights do not apply to the conversion of AA Shares to L Shares, as permitted by our bylaws, or the subsequent transfer of L Shares. The agreement also provides for the composition of the Board of
Directors and the Executive Committee.

As of April 30, 2011, 38.7% of the outstanding L Shares were represented by L
Share ADSs, each representing the right to receive 20 L Shares, and 99.3% of the L Share ADSs were held by 11,783 registered holders with addresses in the United States. As of such date, 33.7% of the A Shares were held in the form of A Share ADSs,
each representing the right to receive 20 A Shares, and 99.5% of the A Share ADSs were held by 5,144 registered holders with addresses in the United States. Each A Share may be exchanged at the option of the holder for one L Share.

We have no information concerning holders with registered addresses in the United States that hold:



| |  |  | AA Shares;
| | - |  | ----------



| |  |  | A Shares not represented by ADSs; or
| | - |  | ------------------------------------



| |  |  | L Shares not represented by ADSs.
| | - |  | ---------------------------------

We may repurchase our shares on the Mexican Stock Exchange from time to time up to a specified maximum aggregate value authorized by the holders of AA Shares and A Shares. As of December 31, 2010, we
had been authorized by our shareholders to repurchase shares with an aggregate value of up to Ps. 175,000 million, and to date during 2011 we have been authorized to repurchase an additional Ps. 50,000 million. As of April 30, 2011,
we had repurchased 10,020 million L Shares and 36 million A Shares, with an aggregate value of approximately Ps. 146,105 million (not including applicable commissions and taxes).



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RELATED PARTY TRANSACTIONS

We have an agreement to receive consulting services from AT&T. During 2011, we will pay U.S.$10.0 million to AT&T in compensation
for its services.In 2010 and 2009 we paid U.S.$7.5 million annually to AT&T in compensation for its services.We have agreements with AT&T International and its affiliates that provide for the completion of calls in our
respective countries of operation.

We have extensive transactions with Net Serviços, our equity method investee, all
in the ordinary course of business.

Our subsidiaries purchase materials or services from a variety of companies that,
according to beneficial ownership reports filed with the SEC, are under common control with us, including Grupo Carso and Grupo Financiero Inbursa and their respective subsidiaries. These services include insurance and banking services provided by
Grupo Financiero Inbursa and its subsidiaries. In addition, we sell products in Mexico through the Sanborns and Sears store chains. Some of our subsidiaries also purchase network construction, services and materials from Grupo Carso. Our
subsidiaries purchase these materials and services on terms no less favorable than it could obtain from unaffiliated parties, and would have access to other sources if our affiliates ceased to provide them on competitive terms.

In November 2010, we entered into a credit agreement with our affiliate Banco Inbursa, S.A., Institución de Banca Múltiple,
Grupo Financiero Inbursa that provides for a line of credit of up to U.S.$400 million to us and/or any of our subsidiaries.

In April 2011, we made short-term loans in the aggregate amount of U.S.$800 million to our affiliate Minera Frisco, S.A.B. de C.V. and
two of its subsidiaries. The interest rate on U.S.$600 million of the loans was 1.5% and on U.S.$200 million of the loans was 1.7%. The loans mature between July 2011 and September 2011. The U.S.$200 million of the loans with an interest rate of
1.7% was prepaid in May 2011.

Note 18 to our audited consolidated financial statements included in this annual report
provides additional information about our related party transactions.



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|Item 8. | Financial Information
|------- | ---------------------

See Financial Statements under Item 18 and pages F-1 through F-103.

DIVIDENDS

We regularly pay cash dividends on our shares. The table below sets forth the nominal amount of dividends paid per share on each date indicated, in pesos and translated into U.S. dollars at the exchange
rate on each of the respective payment dates.



|                  |  |                 |         |  |                   |       |        | 
|----------------- |  | --------------- | ------- |  | ----------------- | ----- | ------ | 
|Payment Date      |  | Pesos per Share |         |  | Dollars per Share |      
|November 19, 2010 |  |                 | Ps.0.16 |  |                   | U.S.$ | 0.0130 | 
|July 23, 2010     |  |                 | Ps.0.16 |  |                   | U.S.$ | 0.0126 | 
|December 10, 2009 |  |                 | Ps.0.50 |  |                   | U.S.$ | 0.0386 | 
|July 24, 2009     |  |                 | Ps.0.30 |  |                   | U.S.$ | 0.0227 | 
|July 25, 2008     |  |                 | Ps.0.26 |  |                   | U.S.$ | 0.0192 | 

In April 2011, our
shareholders approved a dividend of Ps. 0.36 per share, payable in two equal installments in July and November 2011. The declaration, amount and payment of dividends by América Móvil is determined by majority vote of the holders
of AA Shares and A Shares, generally on the recommendation of the Board of Directors, and depends on our results of operations, financial condition, cash requirements, future prospects and other factors considered relevant by the holders of AA
Shares and A Shares.

Our bylaws provide that holders of AA Shares, A Shares and L Shares participate equally on a per-share
basis in dividend payments and other distributions, subject to certain preferential dividend rights of holders of L Shares. See BylawsDividend Rights and BylawsPreferential Rights of L Shares under Item 10.



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LEGAL PROCEEDINGS

In each of the countries in which we conduct operations, we are party to various legal proceedings in the ordinary course of business.
These proceedings include tax, labor, antitrust, contractual matters and administrative and judicial proceedings concerning regulatory matters such as interconnection and tariffs.

Our concessions are generally subject to early termination for violations of their terms, including certain service, quality, coverage
standards and certain interconnection obligations. We are also party to a number of proceedings regarding our compliance with administrative rules and regulations and concession standards. As of the date of this annual report, we believe that none
of these proceedings is likely to result in the revocation of any of our material concessions.

Our material legal proceedings
are described in Note 17 to our audited consolidated financial statements included in this annual report, and that description is incorporated by reference under this Item.



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|Item 9. | The Offer and Listing
|------- | ---------------------

TRADING MARKETS

Our shares and ADSs are listed or quoted on the following markets:



|             |  |                                                                                                 
|------------ |  | ------------------------------------------------------------------------------------------------
|L Shares     |  | Mexican Stock ExchangeMexico City Mercado de Valores Latinoamericanos en Euros (Latibex)Madrid
|             | 
|L Share ADSs |  | New York Stock ExchangeNew York FWB Frankfurter WertpapierbörseFrankfurt                      
|             | 
|A Shares     |  | Mexican Stock ExchangeMexico City                                                              
|             | 
|A Share ADSs |  | NASDAQ National MarketNew York                                                                 

The
following table sets forth, for the periods indicated, the reported high and low sales prices for the L Shares on the Mexican Stock Exchange and the reported high and low sales prices for the L Share ADSs on the NYSE.



|                         |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|------------------------ |  | --------------------- | -------- |  | ------------------------------ |  | -------- | ---- |  | ----- | ----- |  |  | ----- | ----- | 
|                         |  | Mexican StockExchange |          |  | NYSE                           | 
|                         |  | High                  |          |  | Low                            |  |          | High |  |       | Low   | 
|                         |  | (pesos per L Share)   |          |  | (U.S. dollars per L Share ADS) | 
|Annual highs and lows    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2006                     |  |                       | Ps.24.13 |  |                                |  | Ps.15.21 |      |  | U.S.$ | 44.40 |  |  | U.S.$ | 27.00 | 
|2007                     |  |                       | 36.09    |  |                                |  | 22.85    |      |  |       | 66.93 |  |  |       | 40.89 | 
|2008                     |  |                       | 35.09    |  |                                |  | 16.29    |      |  |       | 66.75 |  |  |       | 23.63 | 
|2009                     |  |                       | 32.00    |  |                                |  | 18.32    |      |  |       | 49.69 |  |  |       | 23.66 | 
|2010                     |  |                       | 36.30    |  |                                |  | 27.67    |      |  |       | 59.48 |  |  |       | 42.94 | 
|                         |  |                       |          | 
|Quarterly highs and lows |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2009:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.22.90 |  |                                |  | Ps.18.32 |      |  | U.S.$ | 34.12 |  |  | U.S.$ | 23.66 | 
|Second quarter           |  |                       | 25.84    |  |                                |  | 19.57    |      |  |       | 39.07 |  |  |       | 29.10 | 
|Third quarter            |  |                       | 31.16    |  |                                |  | 24.88    |      |  |       | 47.66 |  |  |       | 37.17 | 
|Fourth quarter           |  |                       | 32.00    |  |                                |  | 28.99    |      |  |       | 49.69 |  |  |       | 42.63 | 
|2010:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.31.79 |  |                                |  | Ps.27.67 |      |  | U.S.$ | 50.81 |  |  | U.S.$ | 42.94 | 
|Second quarter           |  |                       | 32.45    |  |                                |  | 30.08    |      |  |       | 52.32 |  |  |       | 45.74 | 
|Third quarter            |  |                       | 33.57    |  |                                |  | 30.25    |      |  |       | 53.33 |  |  |       | 46.18 | 
|Fourth quarter           |  |                       | 36.30    |  |                                |  | 33.86    |      |  |       | 59.48 |  |  |       | 54.21 | 
|2011:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.36.17 |  |                                |  | Ps.32.33 |      |  | U.S.$ | 59.00 |  |  | U.S.$ | 53.63 | 
|                         |  |                       |          | 
|Monthly highs and lows   |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2010:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|November                 |  |                       | Ps.36.30 |  |                                |  | Ps.34.87 |      |  | U.S.$ | 59.48 |  |  | U.S.$ | 56.13 | 
|December                 |  |                       | 35.70    |  |                                |  | 34.94    |      |  |       | 57.76 |  |  |       | 56.07 | 
|2011:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|January                  |  |                       | Ps.36.17 |  |                                |  | Ps.34.23 |      |  | U.S.$ | 59.00 |  |  | U.S.$ | 56.12 | 
|February                 |  |                       | 35.22    |  |                                |  | 33.70    |      |  |       | 58.52 |  |  |       | 55.34 | 
|March                    |  |                       | 34.52    |  |                                |  | 32.33    |      |  |       | 58.10 |  |  |       | 53.63 | 
|April                    |  |                       | 34.83    |  |                                |  | 32.55    |      |  |       | 59.00 |  |  |       | 56.15 | 



Source: Bloomberg



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The table below sets forth, for the periods indicated, the reported high and low sales
prices for the A Shares on the Mexican Stock Exchange and the high and low bid prices for A Share ADSs published by NASDAQ. Bid prices published by NASDAQ for the A Share ADSs are inter-dealer quotations and may not reflect actual transactions.



|                         |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|------------------------ |  | ---------------------- | -------- |  | ------------------------------ |  | -------- | ---- |  | ----- | ----- |  |  | ----- | ----- | 
|                         |  | Mexican 
StockExchange |          |  | NASDAQ                         | 
|                         |  | High                   |          |  | Low                            |  |          | High |  |       | Low   | 
|                         |  | (pesos per A Share)    |          |  | (U.S. dollars per A Share ADS) | 
|Annual highs and lows    |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2006                     |  |                        | Ps.24.09 |  |                                |  | Ps.15.15 |      |  | U.S.$ | 44.38 |  |  | U.S.$ | 26.80 | 
|2007                     |  |                        | 35.94    |  |                                |  | 22.81    |      |  |       | 66.95 |  |  |       | 40.88 | 
|2008                     |  |                        | 35.50    |  |                                |  | 16.00    |      |  |       | 66.40 |  |  |       | 24.03 | 
|2009                     |  |                        | 32.09    |  |                                |  | 17.91    |      |  |       | 49.97 |  |  |       | 23.44 | 
|2010                     |  |                        | 36.00    |  |                                |  | 28.00    |      |  |       | 59.68 |  |  |       | 43.02 | 
|                         |  |                        |          | 
|Quarterly highs and lows |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2009:                    |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                        | Ps.22.47 |  |                                |  | Ps.17.96 |      |  | U.S.$ | 34.84 |  |  | U.S.$ | 23.44 | 
|Second quarter           |  |                        | 25.70    |  |                                |  | 18.70    |      |  |       | 38.96 |  |  |       | 29.17 | 
|Third quarter            |  |                        | 31.10    |  |                                |  | 25.00    |      |  |       | 47.65 |  |  |       | 37.23 | 
|Fourth quarter           |  |                        | 32.09    |  |                                |  | 28.90    |      |  |       | 49.97 |  |  |       | 42.51 | 
|2010:                    |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                        | Ps.31.80 |  |                                |  | Ps.28.00 |      |  | U.S.$ | 50.57 |  |  | U.S.$ | 43.02 | 
|Second quarter           |  |                        | 32.40    |  |                                |  | 29.80    |      |  |       | 52.34 |  |  |       | 45.98 | 
|Third quarter            |  |                        | 33.15    |  |                                |  | 30.15    |      |  |       | 53.03 |  |  |       | 46.44 | 
|Fourth quarter           |  |                        | 36.00    |  |                                |  | 33.01    |      |  |       | 59.68 |  |  |       | 54.09 | 
|2011:                    |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                        | Ps.36.05 |  |                                |  | Ps.32.50 |      |  | U.S.$ | 59.11 |  |  | U.S.$ | 53.52 | 
|                         |  |                        |          | 
|Monthly highs and lows   |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2010:                    |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|November                 |  |                        | Ps.36.00 |  |                                |  | Ps.34.02 |      |  | U.S.$ | 59.68 |  |  | U.S.$ | 56.01 | 
|December                 |  |                        | 35.50    |  |                                |  | 34.90    |      |  |       | 57.90 |  |  |       | 55.81 | 
|2011:                    |  |                        |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|January                  |  |                        | Ps.36.05 |  |                                |  | Ps.34.01 |      |  | U.S.$ | 59.11 |  |  | U.S.$ | 55.91 | 
|February                 |  |                        | 35.00    |  |                                |  | 33.60    |      |  |       | 58.61 |  |  |       | 55.40 | 
|March                    |  |                        | 34.40    |  |                                |  | 32.50    |      |  |       | 57.65 |  |  |       | 53.52 | 
|April                    |  |                        | 34.50    |  |                                |  | 31.96    |      |  |       | 58.90 |  |  |       | 56.09 | 



Source: Bloomberg



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TRADING ON THE MEXICAN STOCK EXCHANGE

The Mexican Stock Exchange, located in Mexico City, is the only stock exchange in Mexico. Founded in 1907, it is organized as a
corporation and operates under a concession from the Ministry of Finance and Public Credit (Secretaría de Hacienda y Crédito Público, or SHCP). Trading on the Mexican Stock Exchange takes place principally
through automated systems between the hours of 8:30 a.m. and 4:00 p.m. Mexico City time, each business day. The Mexican Stock Exchange operates a system of automatic suspension of trading in shares of a particular issuer as a means of controlling
excessive price volatility, but under current regulations this system does not apply to securities such as the A Shares or the L Shares that are directly or indirectly (for example, through ADSs) quoted on a stock exchange (including for these
purposes NASDAQ) outside Mexico.

Settlement is effected three business days after a share transaction on the Mexican Stock
Exchange. Deferred settlement, even by mutual agreement, is not permitted without the approval of the CNBV. Most securities traded on the Mexican Stock Exchange, including ours, are on deposit with S.D. Indeval Institución para el
Depósito de Valores, S.A. de C.V., a privately owned securities depositary that acts as a clearinghouse for Mexican Stock Exchange transactions.



|Item 10. | Additional Information
|-------- | ----------------------

BYLAWS

Set forth below is a brief summary of certain significant provisions of our bylaws and Mexican law. This description does not purport to be complete and is qualified by reference to our bylaws, which have
been filed as an exhibit to this annual report. For a description of the provisions of our bylaws relating to our Board of Directors, Executive and Audit and Corporate Practices Committees and External Auditor, see Directors, Senior Management
and Employees under Item 6.

Organization and Register

América Móvil is a sociedad anónima bursátil de capital variable organized in Mexico under the Mexican
General Corporations Law and the Mexican Securities Market Law. It was registered in the Public Registry of Commerce of Mexico City on October 13, 2000 under the number 263,770.

Purpose

Our main corporate purpose, as set out in Article Three of our
bylaws, is to promote, incorporate, organize, exploit, acquire and participate in the capital stock or assets of all types of civil or commercial companies, partnerships and industrial, commercial, service or other entities, whether domestic or
foreign, and to participate in the management or liquidation thereof.

Share Capital

Our capital stock comprises AA Shares, without par value, A Shares, without par value and L Shares, without par value. All of the
outstanding shares are fully paid and non-assessable.

AA Shares and A Shares have full voting rights. Holders of L Shares may
vote only in limited circumstances as described under Voting Rights under this Item 10. The rights of holders of all series of capital stock are identical except for the voting rights and the limitations on non-Mexican ownership of
AA Shares. The AA Shares, which must always represent at least 51% of the combined AA Shares and A Shares, may be owned only by holders that qualify as Mexican investors as defined in the Foreign Investment Law (Ley de Inversión
Extranjera) and our bylaws. See Limitations on Share Ownership under this Item 10.



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Each AA Share or A Share may be exchanged at the option of the holder for one L Share,
provided that the AA Shares may never represent less than 20% of our outstanding capital stock or less than 51% of our combined AA Shares and A Shares.

On April 27, 2011, our shareholders approved a 2-for-1 stock split that will become effective on a date to be determined in the second half of 2011.

Voting Rights

Each AA
Share and A Share entitles the holder thereof to one vote at any meeting of our shareholders. Each L Share entitles the holder to one vote at any meeting at which holders of L Shares are entitled to vote. Holders of L Shares are entitled to vote
only to elect two members of the Board of Directors and the corresponding alternate directors and on the following matters:



| |  |  | the transformation of América Móvil from one type of company to another;
| | - |  | ------------------------------------------------------------------------



| |  |  | any merger of América Móvil;
| | - |  | ----------------------------



| |  |  | the extension of our corporate life;
| | - |  | ------------------------------------



| |  |  | our voluntary dissolution;
| | - |  | --------------------------



| |  |  | a change in our corporate purpose;
| | - |  | ----------------------------------



| |  |  | a transaction that represents 20% or more of the Companys consolidated assets;
| | - |  | -------------------------------------------------------------------------------



| |  |  | a change in our state of incorporation;
| | - |  | ---------------------------------------



| |  |  | removal of our shares from listing on the Mexican Stock Exchange or any foreign stock exchange; and
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | any action that would prejudice the rights of holders of L Shares.
| | - |  | ------------------------------------------------------------------

A resolution on any of the specified matters requires the affirmative vote of both a majority of all outstanding shares and a majority of
the AA Shares and the A Shares voting together.

Under Mexican law, holders of shares of any series are also entitled to vote
as a class on any action that would prejudice the rights of holders of shares of such series, and a holder of shares of such series would be entitled to judicial relief against any such action taken without such a vote. There are no other procedures
for determining whether a proposed shareholder action requires a class vote, and Mexican law does not provide extensive guidance on the criteria to be applied in making such a determination.

Shareholders Meetings

General shareholders meetings may be
ordinary meetings or extraordinary meetings. Extraordinary general meetings are those called to consider certain matters specified in Article 182 of the Mexican General Corporations Law, including, principally, amendments of the bylaws, liquidation,
merger and transformation from one type of company to another, as well as to consider the removal of our shares from listing on the Mexican Stock Exchange or any foreign stock exchange. General meetings called to consider all other matters are
ordinary meetings. The two directors elected by the holders of L Shares are elected at a special meeting of holders of L Shares. All other matters on which holders of L Shares are entitled to vote would be considered at an extraordinary general
meeting.

A special meeting of the holders of L Shares must be held each year for the election or ratification of directors.
An ordinary general meeting of the holders of AA Shares and A Shares must be held each year to consider the approval of the financial statements for the preceding fiscal year, to elect or ratify directors and to determine the allocation of the
profits of the preceding year. An ordinary general shareholder meeting of all



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shareholders, including holders of L Shares, must be held to consider the approval of all transactions that represent 20% or more of our consolidated assets within the corresponding immediately
preceding quarter of any fiscal year.

The quorum for an ordinary general meeting of the AA Shares and A Shares is 50% of such
shares, and action may be taken by a majority of the shares present. If a quorum is not available, a second meeting may be called at which action may be taken by a majority of the AA Shares and A Shares present, regardless of the number of such
shares. Special meetings of holders of L Shares are governed by the same rules applicable to ordinary general meetings of holders of AA Shares and A Shares. The quorum for an extraordinary general meeting at which holders of L Shares may not vote is
75% of the AA Shares and A Shares, and the quorum for an extraordinary general meeting at which holders of L Shares are entitled to vote is 75% of the outstanding capital stock. If a quorum is not available in either case, a second meeting may be
called and action may be taken, provided a majority of the shares entitled to vote is present. Whether on first or second call, actions at an extraordinary general meeting may be taken by a majority vote of the AA Shares and A Shares outstanding
and, on matters which holders of L Shares are entitled to vote, a majority vote of all the capital stock.

Holders of 20% of
our outstanding capital stock may have any shareholder action set aside by filing a complaint with a court of law within 15 days after the close of the meeting at which such action was taken and showing that the challenged action violates Mexican
law or our bylaws. In addition, any holder of our capital stock may bring an action at any time within five years challenging any shareholder action. Relief under these provisions is only available to holders:



| |  |  | who were entitled to vote on, or whose rights as shareholders were adversely affected by, the challenged shareholder action; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------



| |  |  | whose shares were not represented when the action was taken or, if represented, were voted against it.
| | - |  | ------------------------------------------------------------------------------------------------------

Shareholders meetings may be called by the Board of Directors, its chairman, its corporate secretary, the Chairman of the Audit and
Corporate Practices Committee or a court. The Chairman of the Board of Directors or the Chairman of the Audit and Corporate Practices Committee may be required to call a meeting of shareholders by the holders or 10% of the outstanding capital stock.
Notice of meetings must be published in the Official Gazette or a newspaper of general circulation in Mexico City at least 15 days prior to the meeting.

In order to attend a meeting, shareholders are required to deposit their shares at the office of our corporate secretary with a Mexican or foreign banking institution or with a Mexican exchange broker.
The depositary for the L Share ADSs and the A Share ADSs does not satisfy this requirement, so ADS holders are not entitled to attend shareholder meetings. However, ADS holders may still vote through the depositary.

Dividend Rights

At the
annual ordinary general meeting of holders of AA Shares and A Shares, the Board of Directors submits our financial statements for the previous fiscal year, together with a report thereon by the Board, to the holders of AA Shares and A Shares for
approval. The holders of AA Shares and A Shares, once they have approved the financial statements, determine the allocation of our net profits for the preceding year. They are required by law to allocate 5% of such net profits to a legal reserve,
which is not thereafter available for distribution except as a stock dividend, until the amount of the legal reserve equals 20% of our capital stock. The remainder of net profits is available for distribution.

All shares outstanding at the time a dividend or other distribution is declared are entitled to participate in such dividend or other
distribution, subject to certain preferential rights of the L Shares. See Preferential Rights of L Shares under this Item 10.



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Preferential Rights of L Shares

Holders of L Shares are entitled to receive a cumulative preferred annual dividend of 0.00042 pesos per share before any dividends are
payable in respect of any other class of América Móvil capital stock. If we pay dividends with respect to any fiscal year in addition to the L Share preferred dividend, such dividends must be allocated:



| |  |  | first, to the payment of dividends with respect to the A Share and AA Shares, in an equal amount per share, up to the amount of the L Share preferred
dividend, and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | second, to the payment of dividends with respect to all classes of América Móvil shares such that the dividend per share is equal.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------

Upon our liquidation, holders of L Shares will be entitled to a liquidation preference equal to:



| |  |  | accrued but unpaid L Share preferred dividends, plus
| | - |  | ----------------------------------------------------



| |  |  | 0.00833 pesos per share (representing the capital attributable to such shares as set forth in our bylaws) before any distribution is made in respect of
our other capital stock in accordance with Article 113 of the Mexican General Corporations Law.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Following
payment in full of any such amount, holders of AA Shares and A Shares are entitled to receive, if available, an amount per share equal to the liquidation preference paid per L Share. Following payment in full of the foregoing amounts, all
shareholders share equally, on a per share basis, in any remaining amounts payable in respect of our capital stock.

Limitation on Capital
Increases

Our bylaws require that any capital increase be represented by new shares of each series in proportion to the
number of shares of each series outstanding.

Preemptive Rights

In the event of a capital increase, except in certain circumstances such as mergers, convertible debentures, public offers and placement
of repurchased shares, a holder of existing shares of a given series has a preferential right to subscribe for a sufficient number of shares of the same series to maintain the holders existing proportionate holdings of shares of that series.
Preemptive rights must be exercised within the next 15 calendar days following the publication of notice of the capital increase in the Official Gazette and a newspaper of general circulation in Mexico City. Under Mexican law, preemptive rights
cannot be traded separately from the corresponding shares that give rise to such rights. As a result, there is no trading market for the rights in connection with a capital increase. Holders of ADSs may exercise preemptive rights only through the
depositary. We are not required to take steps that may be necessary to make this possible.

Limitations on Share Ownership

Our bylaws provide that at least 20% of our capital stock must consist of AA Shares. Our bylaws also provide that A Shares and L Shares
together cannot represent more than 80% of our capital stock. AA Shares can only be held or acquired by:



| |  |  | Mexican citizens;
| | - |  | -----------------



| |  |  | Mexican corporations whose capital stock is held completely by Mexican citizens;
| | - |  | --------------------------------------------------------------------------------



| |  |  | Mexican corporations in which at least 51% of their capital stock may only be held or acquired by (i) Mexican citizens or (ii) Mexican
corporations;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | Mexican credit and insurance companies;
| | - |  | ---------------------------------------



| |  |  | Mexican investment companies operating under the Investment Companies Law (Ley de Sociedades de Inversión) and Mexican institutional
investors as defined in the Mexican Securities Market Law; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Trusts expressly permitted to acquire AA Shares in accordance with Mexican law and in which (i) the majority of the trustees rights are held
by Mexican citizens, corporations whose capital stock is held by Mexican citizens in its majority, and Mexican credit, insurance and investment companies, or (ii) the AA Shares controlled by the trust represent a minority of the outstanding AA
Shares and are voted in the same manner as the majority of the outstanding AA Shares.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

If foreign
governments or states acquire our AA Shares, such shares would immediately be rendered without effect or value.

Non-Mexican
investors cannot hold AA Shares except through trusts that effectively neutralize their votes. AT&T, Inc., one of our shareholders, holds its AA Shares through a trust that has been approved by relevant authorities in Mexico for this purpose.

At a general extraordinary meeting held in Mexico City on March 17, 2010, the shareholders of América
Móvil voted to approve an amendment to its bylaws (estatutos sociales) that added a provision called a foreign exclusion clause. Under the foreign exclusion clause, ownership of América Móvil shares is restricted to
holders that qualify as Mexican investors under Mexican law. The foreign exclusion clause does not apply to the L Shares, and under transitional provisions adopted by the shareholders it does not limit foreign ownership of A Shares outstanding as of
the date of the shareholders meeting approving the amendment.

Restrictions on Certain Transactions

Our bylaws provide that any transfer of more than 10% of the combined A Shares and AA Shares, effected in one or more transactions by any
person or group of persons acting in concert, requires prior approval by our Board of Directors. If the Board of Directors denies such approval, however, Mexican law and our bylaws require it to designate an alternate transferee, who must pay market
price for the shares as quoted on the Mexican Stock Exchange.

Further, the ordinary shareholders meeting shall approve all
transactions that represent 20% or more of our consolidated assets within the corresponding immediately preceding quarter of any fiscal year.

Restrictions on Deregistration in Mexico

Our shares are registered with the National Securities Registry maintained by the CNBV, as required under the Mexican Securities Market Law and regulations issued by the CNBV.

If we wish to cancel our registration, or if it is cancelled by the CNBV, we are required to conduct a public offer to purchase all the
outstanding shares prior to such cancellation. Such offer shall be addressed exclusively to those persons other than the members of the controlling group of shareholders, who were shareholders or holders of other securities representing such shares
(i) as of the date set forth by the CNBV, if the registration is cancelled by resolution thereof, or (ii) as of the date of the resolution adopted by the general extraordinary shareholders meeting, if the registration is cancelled
voluntarily.

Our bylaws provide that if, after the public offer is concluded, there are still outstanding shares held by the
general public, América Móvil will be required to create a trust for a period of six months, into which we will be required to contribute funds in an amount sufficient to purchase, at the same price as the offer price, the number of
outstanding shares held by the general public that did not consent to the offer.



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Unless the CNBV authorizes otherwise, upon the prior approval of the Board of Directors
which must take into account the opinion of the audit and corporate practices committee, the offer price will be the higher of: (i) the average of the closing price during the previous 30 days on which the shares may have been quoted, or
(ii) the book value of the shares in accordance with the most recent quarterly report submitted to the CNBV and to the Mexican Stock Exchange.

The voluntary cancellation of the registration shall be subject to (i) the prior authorization of the CNBV, and (ii) the authorization of not less than 95% of the outstanding capital stock in a
general extraordinary shareholders meeting.

Tender Offer Rules

Our bylaws provide that any purchasers or group of purchasers that obtain or increase a significant participation (i.e., 30% or
more) in the capital stock of the company, without conducting a previous public offer in accordance with the applicable rules issued by the CNBV, would not have the right to exercise the corporate rights of their shares, and that the company will
not register such shares in the share registry book.

Other Provisions

Variable capital.    We are permitted to issue shares constituting fixed capital and shares constituting
variable capital. All of our outstanding shares of capital stock constitute fixed capital. The issuance of variable-capital shares, unlike the issuance of fixed-capital shares, does not require an amendment of the bylaws, although it does require a
majority vote of the AA Shares and the A Shares.

Forfeiture of shares.    As required by Mexican
law, our bylaws provide that any alien who at the time of incorporation or at any time thereafter acquires an interest or participation in the capital of the corporation shall be considered, by virtue thereof, as Mexican in respect thereof and shall
be deemed to have agreed not to invoke the protection of his own government, under penalty, in case of breach of such agreement, of forfeiture to the nation of such interest or participation. Under this provision a non-Mexican shareholder is deemed
to have agreed not to invoke the protection of his own government by asking such government to interpose a diplomatic claim against the Mexican government with respect to the shareholders rights as a shareholder, but is not deemed to have
waived any other rights it may have, including any rights under the U.S. securities laws, with respect to its investment in América Móvil. If the shareholder invokes such governmental protection in violation of this agreement, its
shares could be forfeited to the Mexican government. Mexican law requires that such a provision be included in the bylaws of all Mexican corporations unless such bylaws prohibit ownership of shares by non-Mexican persons.

Exclusive jurisdiction.    Our bylaws provide that legal actions relating to the execution, interpretation or
performance of the bylaws shall be brought only in Mexican courts.

Duration.    América
Móvils existence under the bylaws continues indefinitely.

Purchase of our own
shares.    According to the bylaws, we may repurchase our shares on the Mexican Stock Exchange at any time at the then prevailing market price. Any such repurchase must conform to guidelines established by the Board of
Directors, and the amount available to repurchase shares must be approved by the general ordinary shareholders meeting. The economic and voting rights corresponding to repurchased shares may not be exercised during the period in which we own such
shares, and such shares are not deemed to be outstanding for purposes of calculating any quorum or vote at any shareholders meeting during such period.

Conflict of interest.    A shareholder that votes on a business transaction in which its interest conflicts with América Móvils may be liable
for damages, but only if the transaction would not have been approved without its vote.



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Appraisal rights.    Whenever the shareholders approve a change
of corporate purposes, change of nationality of the corporation or transformation from one type of company to another, any shareholder entitled to vote on such change that has voted against it may withdraw from América Móvil and
receive the book value attributable to its shares, provided it exercises its right within 15 days following the adjournment of the meeting at which the change was approved.

Rights of Shareholders

The protections afforded to minority shareholders
under Mexican law are different from those in the United States and many other jurisdictions. The substantive law concerning fiduciary duties of directors has not been the subject of extensive judicial interpretation in Mexico, unlike many
states in the United States where duties of care and loyalty elaborated by judicial decisions help to shape the rights of minority shareholders. Mexican civil procedure does not contemplate class actions, which permit shareholders in U.S. courts to
bring actions on behalf of other shareholders. Shareholders cannot challenge corporate action taken at a shareholders meeting unless they meet certain procedural requirements, as described above under Shareholders Meetings.

As a result of these factors, in practice it may be more difficult for our minority shareholders to enforce rights against us
or our directors or controlling shareholders than it would be for shareholders of a U.S. company.

In addition, under the U.S.
securities laws, as a foreign private issuer we are exempt from certain rules that apply to domestic U.S. issuers with equity securities registered under the U.S. Securities Exchange Act of 1934, including the proxy solicitation rules and the rules
requiring disclosure of share ownership by directors, officers and certain shareholders. We are also exempt from the corporate governance requirements of the NYSE and NASDAQ, except that since July 2005 we are subject to the requirements concerning
audit committees and independent directors adopted pursuant to the Sarbanes- Oxley Act of 2002. For a comparison of our corporate governance policies and the corporate governance requirements of the NYSE and NASDAQ, see Corporate
Governance under this Item 10.

Enforceability of Civil Liabilities

América Móvil is organized under the laws of Mexico, and most of our directors, officers and controlling persons reside
outside the United States. In addition, all or a substantial portion of our assets and their assets are located in Mexico. As a result, it may be difficult for investors to effect service of process within the United States on such persons. It
may also be difficult to enforce against them, either inside or outside the United States, judgments obtained against them in U.S. courts, or to enforce in U.S. courts judgments obtained against them in courts in jurisdictions outside the
United States, in any action based on civil liabilities under the U.S. federal securities laws. There is doubt as to the enforceability against such persons in Mexico, whether in original actions or in actions to enforce judgments of U.S. courts, of
liabilities based solely on the U.S. federal securities laws.

CERTAIN CONTRACTS

Telcel holds concessions granted by the SCT with respect to its licenses in each of the nine regions in Mexico. A number of our
subsidiaries and affiliates also hold concessions and licenses granted by regulatory authorities in the countries in which they operate. See Regulation under Item 4.

Our agreements with related parties are described in Related Party Transactions under Item 7.



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EXCHANGE CONTROLS

Mexico has had a free market for foreign exchange since 1991, and the government has allowed the peso to float freely against the U.S.
dollar since December 1994. There can be no assurance that the government will maintain its current foreign exchange policies. See Exchange Rates under Item 3.

TAXATION

The following summary contains a
description of certain Mexican federal and U.S. federal income tax consequences of the acquisition, ownership and disposition of L Shares, A Shares, L Share ADSs or A Share ADSs, but it does not purport to be a comprehensive description of all of
the tax considerations that may be relevant to a decision to purchase, hold or sell shares or ADSs.

The Convention for the
Avoidance of Double Taxation and the Prevention of Fiscal Evasion and the Protocols thereto between the United States and Mexico entered into force on January 1, 1994 and has been amended by an additional protocol that entered into force on
July 3, 2003 (together, the Tax Treaty). The United States and Mexico have also entered into an agreement concerning the exchange of information with respect to tax matters.

This discussion does not constitute, and should not be considered as, legal or tax advice to holders. The discussion is for general
information purposes only and is based upon the federal tax laws of Mexico (including the Mexican Income Tax Law and the Mexican Federal Tax Code) and the United States as in effect on the date of this annual report (including the Tax Treaty), which
are subject to change, and such changes may have retroactive effect. Holders of shares or ADSs should consult their own tax advisers as to the Mexican, U.S. or other tax consequences of the purchase, ownership and disposition of shares or ADSs,
including, in particular, the effect of any foreign, state or local tax laws.

Mexican Tax Considerations

The following is a general summary of the principal consequences under the Mexican Income Tax Law (Ley del Impuesto sobre la Renta,
or the Mexican Income Tax Law) and rules and regulations thereunder, as currently in effect, of an investment in shares or ADSs by a holder that is not a resident of Mexico and that will not hold shares or ADSs or a beneficial interest
therein in connection with the conduct of a trade or business through a permanent establishment in Mexico (a nonresident holder).

For purposes of Mexican taxation, the definition of residence is highly technical and residence arises in several situations. Generally, an individual is a resident of Mexico if he or she has established
his or her home or center of vital interests in Mexico, and a corporation is considered a resident if it has its place of effective management in Mexico. However, any determination of residence should take into account the particular situation of
each person or legal entity.

If a legal entity or an individual is deemed to have a permanent establishment in Mexico for
Mexican tax purposes, all income attributable to that permanent establishment will be subject to Mexican income taxes, in accordance with applicable tax laws.

This summary does not address all of the Mexican tax consequences that may be applicable to specific holders of the shares (including a holder that controls the Company, an investor that holds 10% or more
of the shares or holders that constitute a group of persons for purposes of Mexican law). It also does not purport to be a comprehensive description of all the Mexican tax considerations that may be relevant to a decision to purchase, own or dispose
of the shares. In particular, this summary does not describe any tax consequences arising under the laws of any state, locality, municipality or taxing jurisdiction other than certain federal laws of Mexico.



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Tax Treaties

Provisions of the Tax Treaty that may affect the taxation of certain U.S. holders (as defined below) are summarized below.

The Mexican Income Tax Law has established procedural requirements for a nonresident holder disposing of his shares to be entitled to the
benefits under any of the tax treaties to which Mexico is a party. These procedural requirements include among others the obligation to (i) prove tax treaty residence, (ii) present tax calculations made by authorized certified public
accountants, and (iii) appoint representatives in Mexico for taxation purposes.

Payment of Dividends

Dividends, either in cash or in kind, paid with respect to the L Shares, A Shares, L Share ADSs or A Share ADSs will
not be subject to Mexican withholding tax.

Taxation of Dispositions

Under current Mexican law and regulations, there is no basis for the Mexican tax authorities to impose taxes on income realized by a
nonresident holder from a disposition of shares or ADSs which are registered in the Mexican Stock Exchange, provided that (i) the transaction is carried out through (a) the Mexican Stock Exchange, (b) other securities exchanges or
markets approved by the SHCP, or (c) other securities exchanges or markets with ample securities trading that are located in countries with which Mexico has entered into an income tax treaty, such as the NYSE, the FWB Frankfurter
Wertpapierbörse, NASDAQ and Latibex, and (ii) certain other requirements are met, including that the acquisition was made pursuant to a non-restricted open market offer. Sales or other dispositions of shares or ADSs carried out in
other circumstances generally are subject to Mexican tax, except to the extent that a nonresident holder is eligible for benefits under an income tax treaty to which Mexico is a party.

Pursuant to the Tax Treaty, gains realized by a U.S. resident which is eligible to receive benefits pursuant to the Tax Treaty from the
sale or other disposition of shares, even if the sale or disposition is not carried out under the circumstances described in the preceding paragraphs, will not be subject to Mexican income tax, provided that the gains are not attributable to a
permanent establishment or a fixed base in Mexico, and further provided that such U.S. holder owned less than 25% of the shares representing our capital stock (including ADSs), directly or indirectly, during the 12-month period preceding such
disposition. U.S. residents should consult their own tax advisors as to their possible eligibility under the treaty.

Gains
realized by other nonresident holders that are eligible to receive benefits pursuant to other income tax treaties to which Mexico is a party may be exempt from Mexican income tax in whole or in part. Non-U.S. holders should consult their own tax
advisers as to their possible eligibility under such treaties.

If a corporation is a resident in a tax haven (as defined by
the Mexican Income Tax Law), the applicable rate will be 40% on the gross income obtained.

Other Mexican Taxes

Under certain circumstances, a nonresident holder will not be liable for estate, inheritance or similar taxes with
respect to its holdings of shares or ADSs; provided, however, that gratuitous transfers of shares may in certain circumstances result in imposition of a Mexican tax upon the recipient. There are no Mexican stamp, issue registration or similar taxes
payable by a nonresident holder with respect to shares or ADSs.



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U.S. Federal Income Tax Considerations

The following is a summary of certain U.S. federal income tax consequences to U.S. holders (as defined below) of the acquisition,
ownership and disposition of shares or ADSs. The summary does not purport to be a comprehensive description of all of the tax consequences of the acquisition, ownership or disposition of shares or ADSs. The summary applies only to U.S. holders that
will hold their shares or ADSs as capital assets and does not apply to special classes of U.S. holders such as dealers in securities or currencies, holders with a functional currency other than the U.S. dollar, holders of 10% or more of our voting
shares (whether held directly or through ADSs or both), tax-exempt organizations, banks or other financial institutions, holders liable for the alternative minimum tax, securities traders electing to account for their investment in their shares or
ADSs on a mark-to-market basis, entities that are treated for U.S. federal income tax purposes as partnerships or other pass-through entities, and persons holding their shares or ADSs in a hedging transaction or as part of a straddle or conversion
transaction.

For purposes of this discussion, a U.S. holder is a holder of shares or ADSs that is:



| |  |  | a citizen or resident of the United States of America,
| | - |  | ------------------------------------------------------



| |  |  | a corporation (or other entity taxable as a corporation) organized under the laws of the United States of America or any state thereof, or
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | otherwise subject to U.S. federal income taxation on a net income basis with respect to the shares or ADSs.
| | - |  | -----------------------------------------------------------------------------------------------------------

Each U.S. holder should consult such holders own tax advisor concerning the overall tax consequences to it of the ownership or
disposition of shares or ADSs that may arise under foreign, state and local laws.

Treatment of ADSs

In general, a U.S. holder of ADSs will be treated as the owner of the shares represented by those ADSs for U.S.
federal income tax purposes. Deposits or withdrawals of shares by U.S. holders in exchange for ADSs will not result in the realization of gain or loss for U.S. federal income tax purposes. U.S. holders that withdraw any shares should consult their
own tax advisors regarding the treatment of any foreign currency gain or loss on any pesos received in respect of such shares.

Taxation of Distributions

In this discussion, we use the term dividends to mean distributions paid out of our current or accumulated earnings and profits with respect to shares or ADSs. In general, the gross amount of
any dividends will be includible in the gross income of a U.S. holder as ordinary income on the day on which the dividends are received by the U.S. holder, in the case of shares, or by the depositary, in the case of ADSs. Dividends will be paid in
pesos and will be includible in the income of a U.S. holder in a U.S. dollar amount calculated by reference to the exchange rate in effect on the date that they are received by the U.S. holder, in the case of shares, or by the depositary, in the
case of ADSs (regardless of whether such pesos are in fact converted into U.S. dollars on such date). If such dividends are converted into U.S. dollars on the date of receipt, a U.S. holder generally should not be required to recognize foreign
currency gain or loss in respect of the dividends. U.S. holders should consult their own tax advisors regarding the treatment of foreign currency gain or loss, if any, on any pesos received by a U.S. holder or depositary that are converted into U.S.
dollars on a date subsequent to receipt. Dividends paid by us will not be eligible for the dividends-received deduction allowed to corporations under the U.S. Internal Revenue Code of 1986, as amended (the Code).

Subject to certain exceptions for short-term and hedged positions, the U.S. dollar amount of dividends received by an individual prior to
January 1, 2013 with respect to the ADSs will be subject to taxation at a



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maximum rate of 15% if the dividends are qualified dividends. Dividends paid on the ADSs will be treated as qualified dividends if (i) the ADSs are readily tradable on an
established securities market in the United States and (ii) we were not, in the year prior to the year in which the dividend was paid, and are not, in the year in which the dividend is paid a passive foreign investment company
(PFIC). The ADSs are listed on the New York Stock Exchange, and will qualify as readily tradable on an established securities market in the United States so long as they are so listed. Based on our audited consolidated
financial statements and relevant market and shareholder data, we believe that we were not treated as a PFIC for U.S. federal income tax purposes with respect to the 2009 or 2010 taxable year. In addition, based on our audited consolidated financial
statements and our current expectations regarding the value and nature of our assets, the sources and nature of our income, and relevant market and shareholder data, we do not anticipate becoming a PFIC for our 2011 taxable year. Based on existing
guidance, it is not entirely clear whether dividends received with respect to the shares will be treated as qualified dividends, because the shares are not themselves listed on a U.S. exchange. In addition, the U.S. Treasury has announced its
intention to promulgate rules pursuant to which holders of ADSs or common stock and intermediaries though whom such securities are held will be permitted to rely on certifications from issuers to establish that dividends are treated as qualified
dividends. Because such procedures have not yet been issued, it is not clear whether we will be able to comply with them. Holders of ADSs and common shares should consult their own tax advisors regarding the availability of the reduced dividend tax
rate in the light of their own particular circumstances.

Distributions of additional shares or ADSs to U.S. holders with
respect to their shares or ADSs that are made as part of a pro rata distribution to all of our shareholders generally will not be subject to U.S. federal income tax.

Taxation of Dispositions

A U.S. holder generally will recognize
capital gain or loss on the sale or other disposition of the shares or ADSs in an amount equal to the difference between the U.S. holders basis in such shares or ADSs (in U.S. dollars) and the amount realized on the disposition (in U.S.
dollars, determined at the spot rate on the date of disposition if the amount realized is denominated in a foreign currency). Gain or loss recognized by a U.S. holder on such sale or other disposition generally will be long-term capital gain or loss
if, at the time of disposition, the shares or ADSs have been held for more than one year. Long-term capital gain recognized by a U.S. holder that is an individual is taxed at reduced rates of tax. The deduction of a capital loss is subject to
limitations for U.S. federal income tax purposes.

Gain, if any, realized by a U.S. holder on the sale or other disposition of
the shares or ADSs generally will be treated as U.S. source income for U.S. foreign tax credit purposes. Consequently, if a Mexican withholding tax is imposed on the sale or disposition of the shares, a U.S. holder that does not receive significant
foreign source income from other sources may not be able to derive effective U.S. foreign tax credit benefits in respect of these Mexican taxes. U.S. holders should consult their own tax advisors regarding the application of the foreign tax credit
rules to their investment in, and disposition of, the shares.

Information Reporting and Backup Withholding

Dividends on, and proceeds from the sale or other disposition of, the shares or ADSs paid to a U.S. holder generally
may be subject to the information reporting requirements of the Code and may be subject to backup withholding unless the holder:



| |  |  | establishes that it is a corporation or other exempt holder, or
| | - |  | ---------------------------------------------------------------



| |  |  | provides an accurate taxpayer identification number on a properly completed Internal Revenue Service Form W-9 and certifies that no loss of exemption
from backup withholding has occurred.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The amount of any backup withholding from a payment to a holder will
be allowed as a credit against the U.S. holders U.S. federal income tax liability and may entitle such holder to a refund, provided that certain required information is furnished to the Service.



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U.S. Tax Consequences for Non-U.S. holders

Distributions.    A holder of shares or ADSs that is, with respect to the United States, a foreign corporation
or a non-resident alien individual (a non-U.S. holder) generally will not be subject to U.S. federal income or withholding tax on dividends received on shares or ADSs, unless such income is effectively connected with the conduct by the
holder of a U.S. trade or business.

Dispositions.    A non-U.S. holder of shares or ADSs will not
be subject to U.S. federal income or withholding tax on gain realized on the sale of shares or ADSs, unless:



| |  |  | such gain is effectively connected with the conduct by the holder of a U.S. trade or business, or
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | in the case of gain realized by an individual holder, the holder is present in the United States for 183 days or more in the taxable year of the sale
and certain other conditions are met.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Information Reporting and Backup
Withholding.    Although non-U.S. holders generally are exempt from backup withholding, a non-U.S. holder may be required to comply with certification and identification procedures in order to establish its exemption from
information reporting and backup withholding.



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DOCUMENTS ON DISPLAY

We file reports, including annual reports on Form 20-F, and other information with the SEC pursuant to the rules and regulations of the
SEC that apply to foreign private issuers. You may read and copy any materials filed with the SEC at its public reference rooms in Washington, D.C. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Any
filings we make electronically will be available to the public over the Internet at the SECs web site at http://www.sec.gov and at our website at http://www.americamovil.com. (This URL is intended to be an inactive textual reference only. It
is not intended to be an active hyperlink to our website. The information on our website, which might be accessible through a hyperlink resulting from this URL, is not and shall not be deemed to be incorporated into this annual report.)



|Item 11. | Quantitative and Qualitative Disclosures about Market Risk
|-------- | ----------------------------------------------------------

See Note 2(v) to our audited consolidated financial statements for disclosures about market risk.



|Item 12. | Description of Securities Other than Equity Securities
|-------- | ------------------------------------------------------



|Item 12D. | American Depositary Shares
|--------- | --------------------------

The Bank of New York Mellon, or the Depositary, serves as the depositary for our ADSs. ADS holders are required to pay various fees to the
Depositary, and the Depositary may refuse to provide any service for which a fee is assessed until the applicable fee has been paid.

ADS holders are required to pay the Depositary amounts in respect of expenses incurred by the Depositary or its agents on behalf of ADS holders, including expenses arising from (i) taxes or other
governmental charges, (ii) registration fees payable to us that may be applicable to the transfer of shares upon deposits to or withdrawals from the ADS program, (iii) cable, telex, and facsimile transmission, (iv) conversion of
foreign currency into U.S. dollars, or (v) servicing of the ADSs or the shares underlying ADSs. The Depositary may decide in its sole discretion to seek payment by either billing holders or by deducting the fee from one or more cash dividends
or other cash distributions.

ADS holders are also required to pay additional fees for certain services provided by the
Depositary, as set forth in the table below.



|                                                                                                                |  |                                                
|--------------------------------------------------------------------------------------------------------------- |  | -----------------------------------------------
|Depositary service                                                                                              |  | Fee payable by ADS holders                     
|Issuance and delivery of ADSs, including in connection with share distributions, rights, sales and stock splits |  | Up to US$5.00 per 100 ADSs (or portion thereof)
|Cash distributions                                                                                              |  | US$0.02 or less per ADS                        
|Surrender, withdrawal or cancellation                                                                           |  | Up to US$5.00 per 100 ADSs (or portion thereof)

Payments
by the Depositary

The Depositary reimburses us for certain expenses we incur in connection with the ADR program, subject
to a ceiling agreed between us and the Depositary from time to time. These reimbursable expenses currently include legal and accounting fees, listing fees, investor relations expenses and fees payable to service providers for the distribution of
material to ADR holders. Since January 1, 2010, the aggregate amount reimbursed by the Depositary is approximately US$17 million.



|Item 13. | Defaults, Dividend Arrearages and Delinquencies
|-------- | -----------------------------------------------

None.



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|Item 14. | Material Modifications to the Rights of Security Holders and Use of Proceeds
|-------- | ----------------------------------------------------------------------------

None.



|Item 15. | Controls and Procedures
|-------- | -----------------------

(a) Disclosure controls and procedures.We carried out an evaluation under the supervision and with the
participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures as of December 31, 2010. There are inherent
limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the circumvention or overriding of the controls and procedures. Accordingly, even effective disclosure controls and
procedures can only provide reasonable assurance of achieving their control objectives. Based upon our evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective to
provide reasonable assurance that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the applicable rules and
forms, and that it is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

(b) Managements annual report on internal control over financial reporting.Our management is
responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended. Under the supervision and with the
participation of our management, including our Board of Directors, Chief Executive Officer, Chief Financial Officer and other personnel, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the
framework in Internal ControlIntegrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for
external purposes in accordance with IFRS. Our internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the
transactions and dispositions of our assets; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with IFRS, and that our receipts and expenditures are being
made only in accordance with authorizations of our management and directors; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a
material effect on our financial statements.

Because of its inherent limitations, internal control over financial reporting
may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the
policies or procedures may deteriorate.

Based on our evaluation under the framework in Internal ControlIntegrated
Framework, our management concluded that our internal control over financial reporting was effective as of December 31, 2010.

Mancera, S.C., a member practice of Ernst & Young Global, an independent registered public accounting firm, our independent auditor, issued an attestation report on our internal control over
financial reporting on May 10, 2011.

(c) Attestation Report of the registered public accounting firm.



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Report of Independent Registered Public Accounting Firm on Internal Control Over Financial Reporting.

The Board of Directors and Stockholders of

América Móvil, S.A.B. de C.V.

We have audited América
Móvil, S.A.B. de C.V. and subsidiaries internal control over financial reporting as of December 31, 2010, based on criteria established in Internal ControlIntegrated Framework issued by the Committee of Sponsoring
Organizations of the Treadway Commission (the COSO criteria). América Móvil, S.A.B. de C.V. and subsidiaries management is responsible for maintaining effective internal control over financial reporting, and for its assessment of
the effectiveness of internal control over financial reporting included in the accompanying Managements Annual Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Companys internal
control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public
Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.
Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed
risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A companys internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial
statements for external purposes in accordance with International Financial Reporting Standards as issued by the International Accounting Standards Board. A companys internal control over financial reporting includes those policies and
procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are
recorded as necessary to permit preparation of financial statements in accordance with International Financial Reporting Standards as issued by the International Accounting Standards Board, and that receipts and expenditures of the company are being
made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the companys assets
that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over
financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of
compliance with the policies or procedures may deteriorate.

In our opinion, América Móvil, S.A.B. de C.V. and
subsidiaries maintained, in all material respects, effective internal control over financial reporting as of December 31, 2010, based on the COSO criteria.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated statements of financial position of América Móvil,
S.A.B. de C.V. and subsidiaries as of January 1, 2009 and December 31, 2009 and 2010 and the related consolidated statements of comprehensive income, changes in equity and cash flows for each of the two years in the period ended
December 31, 2010, and our report dated May 10, 2011, expressed an unqualified opinion thereon.



Mancera, S.C. A member
practice of Ernst & Young Global/s/ Omero Campos SeguraOmero Campos Segura


Mexico City, Mexico

May 10, 2011



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(d) Changes in internal control over financial
reporting.There has been no change in our internal control over financial reporting during 2010 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.



|Item 16A. | Audit Committee Financial Expert
|--------- | --------------------------------

Our Board of Directors has determined that Carlos Bremer Gutiérrez qualifies as an audit committee financial expert, and Mr. Bremer Gutiérrez is independent under the
definition of independent applicable to us under the rules of the NYSE.



|Item 16B. | Code of Ethics
|--------- | --------------

We have
adopted a code of ethics, as defined in Item 16B of Form 20-F under the Securities Exchange Act of 1934, as amended. Our code of ethics applies to, among others, our chief executive officer, chief financial officer and comptroller, and persons
performing similar functions. Our code of ethics is available on our web site at www.americamovil.com. If we amend any provisions of our code of ethics that apply to our chief executive officer, chief financial officer, comptroller and persons
performing similar functions, or if we grant any waiver of such provisions, we will disclose such amendment or waiver on our web site at the same address.



|Item 16C. | Principal Accountant Fees and Services
|--------- | --------------------------------------

Audit and Non-Audit Fees

The following table sets forth the fees billed to us and our subsidiaries by our independent registered public accounting firm, Mancera,
during the fiscal years ended December 31, 2009 and 2010:



|                   |  |                                |     |  |      |     |     | 
|------------------ |  | ------------------------------ | --- |  | ---- | --- | --- | 
|                   |  | Year ended December 31,        |    
|                   |  | 2009                           |     |  | 2010 |    
|                   |  | (in millions of Mexican pesos) |    
|Audit fees         |  | Ps.                            | 177 |  |      | Ps. | 156 | 
|Audit-related fees |  |                                | 28  |  |      |     | 17  | 
|Tax fees           |  |                                | 16  |  |      |     | 24  | 
|All other fees     |  |                                |    |  |      |     |    | 
|                   |  |                                |     |  |      |     |     | 
|Total fees         |  | Ps.                            | 221 |  |      | Ps. | 197 | 
|                   |  |                                |     |  |      |     |     | 

Audit fees in the above table are the aggregate fees billed by Mancera and its affiliates in connection with
the audit of our annual financial statements, statutory and regulatory audits.

Audit-related fees in the above table
are the aggregate fees billed by Mancera and its affiliates for the review of reports on our operations submitted to Cofetel and attestation services that are not required by statute or regulation.

Tax fees in the above table are fees billed by Mancera and its affiliates for tax compliance services, tax planning services and tax
advice services.

Audit and Corporate Practices Committee Approval Policies and Procedures

Our audit and corporate practices committee has established policies and procedures for the engagement of our independent auditors for
services. Our audit and corporate practices committee expressly approves on a case-by-case basis any engagement of our independent auditors for audit and non-audit services provided to us or our subsidiaries. Prior to providing any services that
require specific pre-approval, our independent auditor, together with our chief financial officer, jointly present to the audit committee a request for approval of audit services, in which such persons confirm that the request complies with
applicable rules.



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|Item 16D. | Exemptions from the Listing Standards for Audit Committees. Not applicable.
|--------- | ---------------------------------------------------------------------------



|Item 16E. | Purchases of Equity Securities by the Issuer and Affiliated Purchasers.
|--------- | -----------------------------------------------------------------------

We periodically repurchase our L and A Shares on the open market using funds authorized by our shareholders specifically for the repurchase of L Shares and A Shares by us at our discretion. In the annual
ordinary shareholders meeting held on April 27, 2011, our shareholders authorized an aggregate Ps. 50,000 million increase in our reserve for the repurchase of additional L Shares and A Shares, thereby increasing our reserve for such
repurchases to Ps. 225,000 million.

The following tables set out certain information concerning purchases of our L Shares and
A Shares by us and affiliated purchasers in 2010:



|               |  |                                     |               |  |                              |  |          |                                                                               |  |  |                                                                                        |  |  |  |                    | 
|-------------- |  | ----------------------------------- | ------------- |  | ---------------------------- |  | -------- | ----------------------------------------------------------------------------- |  |  | -------------------------------------------------------------------------------------- |  |  |  | ------------------ | 
|Period         |  | Total Numberof L
SharesPurchased(1) |               |  | Average PricePaid per LShare |  |          | Total Numberof L SharesPurchased asPart of PubliclyAnnounced Plansor
Programs |  |  | Approximate PesoValue of L Sharesthat May Yet BePurchased Underthe Plans orPrograms(2) | 
|January 2010   |  |                                     | 123,115,000   |  |                              |  | Ps.29.17 |                                                                               |  |  | 31,000,000                                                                             |  |  |  | Ps.  9,888,791,377 | 
|February 2010  |  |                                     | 93,906,600    |  |                              |  | 28.91    |                                                                               |  |  | 59,101,600                                                                             |  |  |  | 8,175,299,983      | 
|March 2010     |  |                                     | 95,113,000    |  |                              |  | 29.88    |                                                                               |  |  | 85,000,000                                                                             |  |  |  | 5,625,840,947      | 
|April 2010     |  |                                     | 0             |  |                              |  | 0        |                                                                               |  |  | 0                                                                                      |  |  |  | 55,625,840,947     | 
|May 2010       |  |                                     | 22,589,500    |  |                              |  | 30.43    |                                                                               |  |  | 0                                                                                      |  |  |  | 55,625,840,947     | 
|June 2010      |  |                                     | 408,424,049   |  |                              |  | 31.26    |                                                                               |  |  | 14,500,000                                                                             |  |  |  | 55,173,765,853     | 
|July 2010      |  |                                     | 67,100,000    |  |                              |  | 31.62    |                                                                               |  |  | 67,100,000                                                                             |  |  |  | 53,049,077,402     | 
|August 2010    |  |                                     | 79,930,000    |  |                              |  | 31.32    |                                                                               |  |  | 76,000,000                                                                             |  |  |  | 50,662,687,705     | 
|September 2010 |  |                                     | 85,071,881    |  |                              |  | 32.30    |                                                                               |  |  | 83,721,881                                                                             |  |  |  | 47,948,993,367     | 
|October 2010   |  |                                     | 38,871,600    |  |                              |  | 34.66    |                                                                               |  |  | 38,871,600                                                                             |  |  |  | 46,601,673,838     | 
|November 2010  |  |                                     | 35,364,000    |  |                              |  | 35.43    |                                                                               |  |  | 35,364,000                                                                             |  |  |  | 45,346,729,469     | 
|December 2010  |  |                                     | 57,633,000    |  |                              |  | 35.26    |                                                                               |  |  | 57,633,000                                                                             |  |  |  | 43,314,436,592     | 
|               |  |                                     |               |  |                              |  |          |                                                                               |  |  |                                                                                        |  |  |  |                    | 
|Total/Average  |  |                                     | 1,107,118,630 |  |                              |  | 31.26    |                                                                               |  |  | 548,292,081                                                                            |  |  |  |                    | 
|               |  |                                     |               |  |                              |  |          |                                                                               |  |  |                                                                                        |  |  |  |                    | 



|(1) | We do not repurchase our L Shares other than through the share repurchase program.
|--- | ----------------------------------------------------------------------------------

|(2) | This is the approximate peso amount available at the end of the period for purchases of both L Shares and A Shares pursuant to our share repurchase program. These are
nominal figures and have not been restated for inflation.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|               |  |                                     |           |  |                              |  |          |                                                                               |  |  |                                                                                        |  |  |  |                    | 
|-------------- |  | ----------------------------------- | --------- |  | ---------------------------- |  | -------- | ----------------------------------------------------------------------------- |  |  | -------------------------------------------------------------------------------------- |  |  |  | ------------------ | 
|Period         |  | Total Numberof A SharesPurchased(1) |           |  | Average PricePaid per AShare |  |          | Total Numberof A SharesPurchased asPart of PubliclyAnnounced Plansor
Programs |  |  | Approximate PesoValue of A Sharesthat May Yet BePurchasedUnder the Plansor Programs(2) | 
|January 2010   |  |                                     | 108,300   |  |                              |  | Ps.30.63 |                                                                               |  |  | 108,300                                                                                |  |  |  | Ps.  9,888,791,377 | 
|February 2010  |  |                                     | 263,400   |  |                              |  | 28.83    |                                                                               |  |  | 177,100                                                                                |  |  |  | 8,175,299,983      | 
|March 2010     |  |                                     | 473,800   |  |                              |  | 30.75    |                                                                               |  |  | 0                                                                                      |  |  |  | 5,625,840,947      | 
|April 2010     |  |                                     | 400       |  |                              |  | 31.11    |                                                                               |  |  | 0                                                                                      |  |  |  | 55,625,840,947     | 
|May 2010       |  |                                     | 281,100   |  |                              |  | 30.20    |                                                                               |  |  | 0                                                                                      |  |  |  | 55,625,840,947     | 
|June 2010      |  |                                     | 29,106    |  |                              |  | 32.09    |                                                                               |  |  | 0                                                                                      |  |  |  | 55,173,765,853     | 
|July 2010      |  |                                     | 87,100    |  |                              |  | 30.82    |                                                                               |  |  | 87,100                                                                                 |  |  |  | 53,049,077,402     | 
|August 2010    |  |                                     | 132,100   |  |                              |  | 31.57    |                                                                               |  |  | 132,100                                                                                |  |  |  | 50,662,687,705     | 
|September 2010 |  |                                     | 261,500   |  |                              |  | 32.35    |                                                                               |  |  | 261,500                                                                                |  |  |  | 47,948,993,367     | 
|October 2010   |  |                                     | 0         |  |                              |  | 0        |                                                                               |  |  | 0                                                                                      |  |  |  | 46,601,673,838     | 
|November 2010  |  |                                     | 53,000    |  |                              |  | 35.20    |                                                                               |  |  | 53,000                                                                                 |  |  |  | 45,346,729,469     | 
|December 2010  |  |                                     | 0         |  |                              |  | 0        |                                                                               |  |  | 0                                                                                      |  |  |  | 43,314,436,592     | 
|               |  |                                     |           |  |                              |  |          |                                                                               |  |  |                                                                                        |  |  |  |                    | 
|Total/Average  |  |                                     | 1,689,806 |  |                              |  | 30.83    |                                                                               |  |  | 819,100                                                                                |  |  |  |                    | 
|               |  |                                     |           |  |                              |  |          |                                                                               |  |  |                                                                                        |  |  |  |                    | 



|(1) | We do not repurchase our A Shares other than through the share repurchase program.
|--- | ----------------------------------------------------------------------------------

|(2) | This is the approximate peso amount available at the end of the period for purchases of both L Shares and A Shares pursuant to our share repurchase program. These are
nominal figures and have not been restated for inflation.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|Item 16F. | Change in Registrants Certifying Accountant. Not Applicable
|--------- | ------------------------------------------------------------



|Item 16G. | Corporate Governance.
|--------- | ---------------------

Our corporate governance practices are governed by our bylaws, the Mexican Securities Market Law and the regulations issued by the CNBV.
We also comply with the Mexican Code of Best Corporate Practices (Código de Mejores Prácticas Corporativas), which was created in January 2001 by a group of Mexican business leaders and was endorsed by the CNBV and the Mexican
Stock Exchange.

The table below discloses the significant differences between our corporate governance practices and those
required for U.S. Companies under the NYSE and NASDAQ listing standards.



|                                                                                                                                                                                                                                                                                                                                                                         |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NYSE Standards                                                                                                                                                                                                                                                                                                                                                           |  | NASDAQ Standards                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |  | Our Corporate Governance Practices                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
|Director Independence.    Majority of board of directors must be independent. §303A.01. Controlled companies, which would
include our company if we were a U.S. issuer, are exempt from this requirement. A controlled company is one in which more than 50% of the voting power is held by an individual, group or another company, rather than the public.
§303A.00. |  | Director Independence.Majority of board of directors must be independent and directors deemed independent must be identified in
a listed companys proxy statement (or annual report on Form 10-K or 20-F if the issuer does not file a proxy statement). Controlled companies, which would include our company if we were a U.S. issuer, are exempt from this
requirement. A controlled company is one in which more than 50% of the voting power for the election of directors is held by an individual, group or another |  | Director Independence.    Pursuant to the Mexican Securities Market Law, our shareholders are required to appoint a board of directors of no more
than 21 members, 25% of whom must be independent. Certain persons are per se non-independent, including insiders, control persons, major suppliers and any relatives of such persons. In accordance with the Mexican Securities Market Law, our
shareholders meeting is required to make a determination as to the independence of our directors, though such determination may be challenged by the CNBV. There is



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|                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NYSE Standards                                                                                                                                                                                                                                                                                                                          |  | NASDAQ Standards                                                                                                                                                                                                                                                                                                                                                                                                                                         |  | Our Corporate Governance Practices                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                                                                                                                                                                                                                                                                                                        |  | company, rather than the public. Rules 5605(b)(1), 5615(c)(1) and (c)(2).                                                                                                                                                                                                                                                                                                                                                                                |  | no exemption from the independence requirement for controlled companies.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|ExecutiveSessions.    Non-management directors must meet at regularly scheduled executive sessions without management. Independent
directors should meet alone in an executive session at least once a year. §303A.03.                                                                                                                  |  | Executive Sessions.    Independent directors must have regularly scheduled executive sessions at which only independent directors are
present. Rule 5605(b)(2).                                                                                                                                                                                                                                                                                          |  | Executive Sessions.Our non-management directors have not held executive sessions without management in the past, and they
are not required to do so.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                                                                                                                                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Nominating/Corporate Governance Committee.Nominating/corporate governance committee composed entirely of independent directors is
required. The committee must have a charter specifying the purpose, duties and evaluation procedures of the committee. §303A.04. Controlled companies are exempt from these requirements. §303A.00. |  | Nominating Committee.Director nominees must be selected, or recommended for the boards selection, either by a nominating
committee comprised solely of independent directors or by a majority of independent directors. Each listed company also must certify that it has adopted a formal charter or board resolution addressing the nominations process. Controlled
companies are exempt from this requirement. Rules 5605(e)(1)(A) and 5615(c)(2). |  | Nominating Committee.    We currently do not have a nominating committee or a corporate governance
committee. We are not required to have a nominating committee. However, Mexican law requires us to have one or more committees that oversee certain corporate practices, including appointment of directors and executives. Under the Mexican Securities
Market Law, committees overseeing certain corporate practices must be composed of independent directors. However, in the case of controlled companies, such as ours, only a majority of the committee members must be independent.
 Under the Mexican Securities Market Law, certain corporate governance functions must
be delegated to one or more committees. Under our bylaws, the Audit and Corporate Practices Committee performs our corporate governance functions. See Item 6. Directors, Senior Management and EmployeesAudit and Corporate Practices
Committee.  As a controlled company, we would be exempt from this
requirement if we were a U.S. issuer.



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|                                                                                                                                                                                                                                                                                                                                                                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NYSE Standards                                                                                                                                                                                                                                                                                                                                                  |  | NASDAQ Standards                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |  | Our Corporate Governance Practices                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|Compensation Committee.Compensation committee composed entirely of independent directors is required, which must evaluate and approve
executive officer compensation. The committee must have a charter specifying the purpose, duties and evaluation procedures of the committee. §303A.05. Controlled companies are exempt from this requirement.
§303A.00. |  | Compensation Committee.    CEO compensation must be determined, or recommended to the board for determination, either by a compensation
committee comprised solely of independent directors or a majority of the independent directors and the CEO may not be present during voting or deliberations. Compensation of all other executive officers must be determined in the same manner, except
that the CEO, and any other executive officers, may be present. Controlled companies are exempt from this requirement. Rules 5605(d)(1)(A)(B) and 5615(c)(2). |  | Compensation Committee.    We currently do not have a compensation committee. We are not required to have a compensation committee since our Audit
and Corporate Practices Committee, which is comprised solely of independent directors, evaluates and approves managements (including our CEO) and directors compensation.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                                                                                                                                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Audit Committee.Audit committee satisfying the independence and other requirements of Rule 10A-3 under the Exchange Act and the more
stringent requirements under the NYSE standards is required. §§303A.06, 303A.07.                                                                                                                                           |  | Audit Committee.Audit committee satisfying the independence and other requirements of Rule 10A-3 under the Exchange Act and the more
stringent requirements under the NASDAQ standards is required. Rule 5605(c)(1)                                                                                                                                                                                                                                                                                                                                              |  | Audit Committee.    We have an audit and corporate practices committee of four members. Each member of the audit and corporate practices committee
is independent, as independence is defined under the Mexican Securities Market Law, and also meets the independence requirements of Rule 10A-3 under the U.S. Securities Exchange Act of 1934, as amended. Our audit and corporate practices committee
operates primarily pursuant to (1) a written charter adopted by our board of directors, which assigns to the committee responsibility over those matters required by Rule 10A-3 (2) our bylaws and (3) Mexican law. For a more detailed description
of the duties of our audit and corporate practices committee, see Item 6. Directors, Senior Management and Employees-Audit and Corporate Practices Committee.
|                                                                                                                                                                                                                                                                                                                                                                |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|Equity Compensation Plans.Equity compensation plans and all material revisions thereto require shareholder approval, subject to
limited exemptions. §§303A.08 and 312.03.                                                                                                                                                                                       |  | Equity Compensation Plans.Equity compensation plans or material amendments thereto require shareholder approval, subject to limited
exemptions.Rule 5635(c).                                                                                                                                                                                                                                                                                                                                                                                                     |  | Equity Compensation Plans.Shareholder approval is expressly required under Mexican law for the adoption and amendment of an equity-compensation
plan. Such plans must provide for similar treatment of executives in comparable positions.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 



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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                               |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NYSE Standards                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  | NASDAQ Standards                                                                                                                                                                                                                                                                                                                                              |  | Our Corporate Governance Practices                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|Shareholder Approval for Issuance of Securities.Issuances of securities (1) that will result in a change of control of the issuer,
(2) that are to a related party or someone closely related to a related party, (3) that have voting power equal to at least 20% of the outstanding common stock voting power before such issuance or (4) that will increase the number of shares of
common stock by at least 20% of the number of outstanding shares before such issuance require shareholder approval.§§312.03(b)-(d). |  | Shareholder Approval for Issuance of Securities.Issuances of securities (1) that will result in a change of control of the issuer,
(2) in connection with certain acquisitions of the stock or assets of another company or (3) in connection with certain transactions other than public offerings require shareholder approval. Rules 5635(a), (b) and (d). |  | Shareholder Approval for Issuance of Securities.    Mexican law requires us to obtain shareholder approval of the issuance of equity securities.
Under certain circumstances, treasury stock, however, may be issued by the board of directors without shareholder approval.                                                                                                                                                                                                             
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                              
|Code of Business Conduct and Ethics.Corporate governance guidelines and a code of business conduct and ethics is required, with
disclosure of any waiver for directors or executive officers. The code must contain compliance standards and procedures that will facilitate the effective operation of the code. §303A.10.                                                                                                                                                                                                |  | Code of Business Conduct and Ethics.Corporate governance guidelines and a code of business conduct and ethics is required, with
disclosure of any waiver and the reasons for such waiver for directors or executive officers. The code must include an enforcement mechanism. Rule 5610.                                                                      |  | Code of Business Conduct and Ethics.    We have adopted a code of ethics, which has been accepted by all of our directors and executive officers
and other personnel. A copy of our code of ethics is available on our website www.americamovil.com.                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                              
|Conflicts of Interest.Determination of how to review and oversee related party transactions is left to the listed company. The audit
committee or comparable body, however, could be considered the forum for such review and oversight. §303A.07. Certain issuances of common stock to a related party require shareholder approval. §312.03(b).                                                                                                                                                                          |  | Conflicts of Interest.Appropriate review of all related party transactions for potential conflict of interest situations and approval
by an audit committee or another independent body of the board of directors of such transactions is required. Rule 5630.                                                                                                |  | Conflicts of Interest.    In accordance with Mexican law, an independent audit committee must provide an opinion to the board of directors
regarding any transaction with a related party that is outside of the ordinary course of business, which must be approved by the board of directors. Pursuant to the Mexican Securities Market Law, our board of directors will establish certain
guidelines regarding related party transactions that do not require specific board approval.
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |  |                                                                                                                                                                                                                                                                                                                                                              
|Solicitation of Proxies.Solicitation of proxies and provision of proxy materials is required for
all meetings of shareholders. Copies of such proxy solicitations are to be provided to NYSE. §§402.01 and 402.04.                                                                                                                                                                                                                                                                                                         |  | Solicitation of Proxies.Solicitation of proxies and provision of proxy materials is required for all meetings of shareholders. Copies
of such proxy solicitations are to be provided to NASDAQ. Rule 5620(b).                                                                                                                                                 |  | Solicitation of Proxies.We are not required to solicit proxies from our shareholders. In accordance with Mexican law and
our bylaws, we inform shareholders of all meetings by public notice, which states the requirements for admission to the meeting. Under the deposit agreement relating to our                                                                                                                                                                                    



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|               |  |                                                                                                                                                                                                     |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|-------------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NYSE Standards |  | NASDAQ Standards                                                                                                                                                                                    |  | Our Corporate Governance Practices                                                                                                                                                                                                                                                                                                                                                                                                                             
|               |  |                                                                                                                                                                                                     |  | ADSs, holders of our ADSs receive notices of shareholders meetings and, where applicable, instructions on how to instruct the depositary to vote at the meeting. Under the
deposit agreement relating to our ADS, we may direct the voting of any ADS as to which no voting instructions are received by the depositary, except with respect to any matter where substantial opposition exists or that materially and adversely
affects the rights of holders.
|               |  |                                                                                                                                                                                                    
|               |  | Peer Review.A listed company must be audited by an independent public accountant that is registered as a public accounting firm with
the Public Company Accounting Oversight Board.Rule 5250(c)(3). |  | Peer Review.Under Mexican law, we must be audited by an independent public accountant that has
received a quality control review as defined by the CNBV. 
Mancera, S.C., a Member Practice of Ernst & Young Global, a public registered firm, our independent auditor, is registered as a public accounting firm
with the Public Company Accounting Oversight Board.                                                                                         



|Item 17. | Not Applicable
|-------- | --------------



|Item 18. | Financial Statements
|-------- | --------------------

See
pages F-1 through F-103 incorporated herein by reference.



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|Item 19. | Exhibits
|-------- | --------

Documents filed
as exhibits to this annual report:



|     |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|---- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|1.1  |  | Amended and restated bylaws (estatutos sociales) of América Móvil, S.A.B. de C.V., dated as of March 17, 2010 (together with an English translation) (incorporated
by reference to Exhibit 1.1 to our annual report on Form 20-F, File No. 001-16269, filed on May 25, 2010).                                                                                                                                                                                                                                                           
|     | 
|2.1  |  | L Share Deposit Agreement (incorporated by reference to our registration statement on Form F-6, File No. 333-126165, filed on June 28, 2005).                                                                                                                                                                                                                                                                                                                                                                                           
|     | 
|2.2  |  | A Share Deposit Agreement (incorporated by reference to our registration statement on Form F-6, File No. 333-126155, filed on June 27, 2005).                                                                                                                                                                                                                                                                                                                                                                                           
|     | 
|3.1  |  | Shareholders Agreement, by and among Banco Inbursa, S.A. Institución de Banca Múltiple, Grupo Financiero Inbursa, División Fiduciaria acting as trustee under
Trust F/1046, Banco Inbursa, S.A. Institución de Banca Múltiple, Grupo Financiero Inbursa, División Fiduciaria acting as trustee under Trust F-0126 and AT&T International, Inc., formerly called SBC International, Inc., dated
February 28, 2011 (incorporated by reference to the report of beneficial ownership of our shares filed on Schedule 13D on March 1, 2011).
|     | 
|4.1  |  | Management Services Agreement dated February 27, 2002 between SBC International Management Services, Inc. and Radiomóvil Dipsa, S.A. de C.V. (incorporated by reference to
Exhibit 4.4 to our annual report on Form 20-F, File No. 001-16269, filed on June 30, 2004).                                                                                                                                                                                                                                                                  
|     | 
|4.2  |  | Seventh Amendment dated July 7, 2009 to Management Services Agreement dated February 27, 2002 between AT&T Mexico, Inc., and América Móvil, S.A.B. de C.V.
(incorporated by reference to Exhibit 4.5 to our annual report on Form 20-F, File No. 001-16269, filed on May 25, 2010).                                                                                                                                                                                                                                                     
|     | 
|4.3  |  | Eighth Amendment dated September 23, 2009 to Management Services Agreement dated February 27, 2002 between AT&T Mexico, Inc., and América Móvil, S.A.B. de C.V.
(incorporated by reference to Exhibit 4.6 to our annual report on Form 20-F, File No. 001-16269, filed on May 25, 2010).                                                                                                                                                                                                                                                
|     | 
|4.4  |  | Ninth Amendment dated November 18, 2009 to Management Services Agreement dated February 27, 2002 between AT&T Mexico, Inc., and América Móvil, S.A.B. de C.V.
(incorporated by reference to Exhibit 4.7 to our annual report on Form 20-F, File No. 001-16269, filed on May 25, 2010).                                                                                                                                                                                                                                                  
|     | 
|4.5  |  | Tenth Amendment dated August 3, 2010 to Management Services Agreement dated February 27, 2002 between AT&T Mexico, Inc., and América Móvil, S.A.B. de
C.V.                                                                                                                                                                                                                                                                                                                                                                              
|     | 
|4.6  |  | Eleventh Amendment dated February 23, 2011 to Management Services Agreement dated February 27, 2002 between AT&T Mexico, Inc., and América Móvil, S.A.B. de
C.V.                                                                                                                                                                                                                                                                                                                                                                        
|     | 
|4.7  |  | Management Services Agreement, dated January 2, 2001, between Teléfonos de México, S.A. de C.V. and AT&T Mexico, Inc. (incorporated by reference to Exhibit
4.4. to the annual report on Form 20-F for the year ended December 31, 2003 of Teléfonos de México, S.A.B. de C.V. (File No. 333 13580) filed on June 28, 2004).                                                                                                                                                                                                            
|     | 
|7.1  |  | Calculation of Ratios of Earnings to Fixed Charges.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|     | 
|8.1  |  | List of certain subsidiaries of América Móvil, S.A.B. de C.V.                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|     | 
|12.1 |  | Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                                                                                                                                                                                                                                                                     
|     | 
|12.2 |  | Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                                                                                                                                                                                                                                                                     
|     | 
|13.1 |  | Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|     | 
|15.1 |  | Consent of Mancera, S.C.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

Omitted from the
exhibits filed with this annual report are certain instruments and agreements with respect to long-term debt of América Móvil, none of which authorizes securities in a total amount that exceeds 10% of the total assets of América
Móvil. We hereby agree to furnish to the SEC copies of any such omitted instruments or agreements as the Commission requests.



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SIGNATURES

The registrant hereby certifies that it meets all of the requirements for filing on Form 20-F and that it has duly caused and authorized the undersigned to sign this annual report on its behalf.

Dated: May 13, 2011



AMÉRICA MÓVIL, S.A.B. DE C.V.By:

/s/ Carlos José García Moreno ElizondoName:

Carlos José García Moreno ElizondoTitle:

Chief Financial OfficerBy:

/s/ Alejandro Cantú JiménezName:

Alejandro Cantú JiménezTitle:

General Counsel




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INDEX TO THE AUDITED CONSOLIDATED FINANCIAL STATEMENTS



|                                                                                                    |  |      |     | 
|--------------------------------------------------------------------------------------------------- |  | ---- | --- | 
|Audited consolidated financial statements of América Móvil, S.A.B. de C.V.                          |  | Page |    
|Report of Mancera, S.C.                                                                             |  |      | F-1 | 
|                                                                                                    | 
|Consolidated Statements of Financial Position as of January 1, 2009 and December 
31, 2009 and 2010 |  |      | F-2 | 
|                                                                                                    | 
|Consolidated Statements of Comprehensive Income for the years ended December 31, 2009 and
2010      |  |      | F-3 | 
|                                                                                                    | 
|Consolidated Statements of Changes in Equity for the years ended December 31, 2009 and
2010         |  |      | F-4 | 
|                                                                                                    | 
|Consolidated Statements of Changes in Cash Flows for the years ended December 31, 2009 and
2010     |  |      | F-5 | 
|                                                                                                    | 
|Notes to the Audited Consolidated Financial Statements                                              |  |      | F-6 | 



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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Shareholders of

América Móvil, S.A.B. de C.V.

We
have audited the accompanying consolidated statements of financial position of América Móvil, S.A.B. de C.V. and subsidiaries as of January 1, 2009 and December 31, 2009 and 2010 and the related consolidated statements of
comprehensive income, changes in equity and cash flows for each of the two years in the period ended December 31, 2010. These financial statements are the responsibility of the Companys management. Our responsibility is to express an
opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company
Accounting Oversight Board (United States of America). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining,
on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements
referred to above present fairly, in all material respects, the consolidated financial position of América Móvil, S.A.B. de C.V. and subsidiaries as of January 1, 2009 and December 31, 2009 and 2010, and the consolidated
results of their operations and their cash flows for each of the two years in the period ended December 31, 2010, in conformity with International Financial Reporting Standards as issued by the International Accounting Standards Board.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States of America),
América Móvil, S.A.B. de C.V. and subsidiaries internal control over financial reporting as of December 31, 2010, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring
Organizations of the Treadway Commission and our report dated May 10, 2011, expressed an unqualified opinion thereon.



Mancera, S.C.A member practice ofErnst & Young Global/s/ Omero Campos SeguraC.P.C. Omero Campos Segura


Mexico City,
Mexico

May 10, 2011



F-1



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##### Table of Contents

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Financial Position

(In thousands of Mexican pesos)



|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|--------------------------------------------------------------- |  | ------------- | --------------- |  | --------------- |  | --------------- | ----------------------- |  |  | --------------- |  |  |  | ---------- | 
|                                                                |  | At January 1, |                 |  | At December 31, |  |                 | Millions of U.S.dollars | 
|                                                                |  | 2009          |                 |  | 2009            |  |                 | 2010                    |  |  | 2010            | 
|Assets                                                          |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Current assets:                                                 |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Cash and cash equivalents (Note 4)                              |  |               | Ps. 36,285,696  |  |                 |  | Ps. 59,766,533  |                         |  |  | Ps. 95,938,465  |  |  |  | USD 7,764  | 
|Accounts receivable, net (Note 5)                               |  |               | 92,993,104      |  |                 |  | 93,502,753      |                         |  |  | 93,164,187      |  |  |  | 7,539      | 
|Derivative financial instruments (Note 11)                      |  |               | 27,026,473      |  |                 |  | 11,666,570      |                         |  |  | 5,321,321       |  |  |  | 431        | 
|Related parties (Note 18)                                       |  |               | 2,250,945       |  |                 |  | 3,109,050       |                         |  |  | 3,571,036       |  |  |  | 289        | 
|Inventories, net (Note 6)                                       |  |               | 35,696,373      |  |                 |  | 23,755,525      |                         |  |  | 26,081,530      |  |  |  | 2,111      | 
|Other current assets, net (Note 7)                              |  |               | 7,986,569       |  |                 |  | 8,397,842       |                         |  |  | 9,635,433       |  |  |  | 780        | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Total current assets                                            |  |               | 202,239,160     |  |                 |  | 200,198,273     |                         |  |  | 233,711,972     |  |  |  | 18,914     | 
|                                                                |  |               |                 | 
|Non-current assets:                                             |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Property, plant and equipment, net (Note 8)                     |  |               | 390,527,757     |  |                 |  | 418,732,632     |                         |  |  | 411,820,387     |  |  |  | 33,327     | 
|Licenses and rights of use, net (Note 9)                        |  |               | 41,779,516      |  |                 |  | 50,531,682      |                         |  |  | 44,520,858      |  |  |  | 3,603      | 
|Trademarks, net (Note 9)                                        |  |               | 6,413,783       |  |                 |  | 5,534,156       |                         |  |  | 4,531,877       |  |  |  | 367        | 
|Goodwill (Note 9)                                               |  |               | 64,706,795      |  |                 |  | 69,196,166      |                         |  |  | 70,918,967      |  |  |  | 5,739      | 
|Investment in associated companies and others(Note 10)          |  |               | 11,877,939      |  |                 |  | 17,557,634      |                         |  |  | 50,539,455      |  |  |  | 4,090      | 
|Deferred taxes (Note 20)                                        |  |               | 15,304,348      |  |                 |  | 22,308,432      |                         |  |  | 32,768,773      |  |  |  | 2,652      | 
|Pension asset (Note 12)                                         |  |               | 14,247,789      |  |                 |  | 15,214,192      |                         |  |  | 16,290,367      |  |  |  | 1,318      | 
|Other non-current assets, net (Note 7)                          |  |               | 6,029,248       |  |                 |  | 8,060,446       |                         |  |  | 11,591,878      |  |  |  | 938        | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Total assets                                                    |  |               | Ps. 753,126,335 |  |                 |  | Ps. 807,333,613 |                         |  |  | Ps. 876,694,534 |  |  |  | USD 70,948 | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Liabilities and equity                                          |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Current liabilities:                                            |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Short-term debt and current portion of long-term debt (Note 16) |  |               | Ps. 68,358,159  |  |                 |  | Ps. 44,967,190  |                         |  |  | Ps. 9,039,204   |  |  |  | USD 731    | 
|Accounts payable and accrued liabilities (Note 13)              |  |               | 119,470,031     |  |                 |  | 124,578,176     |                         |  |  | 145,594,927     |  |  |  | 11,783     | 
|Taxes payable                                                   |  |               | 16,441,205      |  |                 |  | 19,667,826      |                         |  |  | 22,479,495      |  |  |  | 1,819      | 
|Derivative financial instruments (Note 11)                      |  |               |                 |  |                 |  |                 |                         |  |  | 453,932         |  |  |  | 37         | 
|Related parties (Note 18)                                       |  |               | 2,187,104       |  |                 |  | 2,120,896       |                         |  |  | 1,911,295       |  |  |  | 155        | 
|Deferred revenues (Note 15)                                     |  |               | 21,220,796      |  |                 |  | 23,475,052      |                         |  |  | 25,064,230      |  |  |  | 2,028      | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Total current liabilities                                       |  |               | 227,677,295     |  |                 |  | 214,809,140     |                         |  |  | 204,543,083     |  |  |  | 16,553     | 
|                                                                |  |               |                 | 
|Long-term debt (Note 16)                                        |  |               | 242,357,779     |  |                 |  | 232,274,489     |                         |  |  | 294,060,952     |  |  |  | 23,797     | 
|Deferred taxes (Note 20)                                        |  |               | 28,226,207      |  |                 |  | 27,041,926      |                         |  |  | 25,178,166      |  |  |  | 2,038      | 
|Deferred revenues (Note 15)                                     |  |               | 427,814         |  |                 |  | 5,462,390       |                         |  |  | 3,990,184       |  |  |  | 323        | 
|Employee benefits (Note 12)                                     |  |               | 13,651,276      |  |                 |  | 13,947,508      |                         |  |  | 12,884,979      |  |  |  | 1,043      | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Total liabilities                                               |  |               | 512,340,371     |  |                 |  | 493,535,453     |                         |  |  | 540,657,364     |  |  |  | 43,754     | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Equity (Note 19):                                               |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Capital stock                                                   |  |               | 30,125,141      |  |                 |  | 30,115,549      |                         |  |  | 96,433,461      |  |  |  | 7,804      | 
|Retained earnings:                                              |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Prior years                                                     |  |               | 94,808,500      |  |                 |  | 97,635,693      |                         |  |  | 105,009,640     |  |  |  | 8,498      | 
|Profit for the period                                           |  |               | 56,055,385      |  |                 |  | 92,697,553      |                         |  |  | 91,123,052      |  |  |  | 7,374      | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Total retained earnings                                         |  |               | 150,863,885     |  |                 |  | 190,333,246     |                         |  |  | 196,132,692     |  |  |  | 15,872     | 
|Other comprehensive income items                                |  |               | 1,077,400       |  |                 |  | 23,415,973      |                         |  |  | 15,085,830      |  |  |  | 1,221      | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Equity attributable to equity holders of the parent             |  |               | 182,066,426     |  |                 |  | 243,864,768     |                         |  |  | 307,651,983     |  |  |  | 24,897     | 
|Non-controlling interests                                       |  |               | 58,719,538      |  |                 |  | 69,933,392      |                         |  |  | 28,385,187      |  |  |  | 2,297      | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Total equity                                                    |  |               | 240,785,964     |  |                 |  | 313,798,160     |                         |  |  | 336,037,170     |  |  |  | 27,194     | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 
|Total liabilities and equity                                    |  |               | Ps. 753,126,335 |  |                 |  | Ps. 807,333,613 |                         |  |  | Ps. 876,694,534 |  |  |  | USD 70,948 | 
|                                                                |  |               |                 |  |                 |  |                 |                         |  |  |                 |  |  |  |            | 

The accompanying notes are an integral part of these financial statements.



F-2



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##### Table of Contents

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

(In thousands of Mexican pesos, except for earnings per share)



|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------ | ----------- | - | ---- | --- | ----------- | --------------------------------------------------------- |  | --- | ------ | -
|                                                                                                                                                                                                                 |  | For the year ended December 31 |            
|                                                                                                                                                                                                                 |  | 2009                           |             |   | 2010 |     |             | Millions of U.S.dollars 2010,except forearnings per share | 
|Operating revenues:                                                                                                                                                                                              |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Mobile voice services                                                                                                                                                                                            |  | Ps.                            | 250,575,632 |   |      | Ps. | 268,030,881 |                                                           |  | USD | 21,690 |  
|Fixed voice services                                                                                                                                                                                             |  |                                | 146,975,577 |   |      |     | 140,178,225 |                                                           |  |     | 11,344 |  
|Mobile data voice services                                                                                                                                                                                       |  |                                | 55,253,021  |   |      |     | 76,954,735  |                                                           |  |     | 6,228  |  
|Fixed data services                                                                                                                                                                                              |  |                                | 60,681,643  |   |      |     | 66,015,070  |                                                           |  |     | 5,342  |  
|Paid television                                                                                                                                                                                                  |  |                                | 5,958,225   |   |      |     | 9,484,920   |                                                           |  |     | 768    |  
|Other services                                                                                                                                                                                                   |  |                                | 41,810,500  |   |      |     | 47,191,847  |                                                           |  |     | 3,819  |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|                                                                                                                                                                                                                 |  |                                | 561,254,598 |   |      |     | 607,855,678 |                                                           |  |     | 49,191 |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Operating costs and expenses:                                                                                                                                                                                    |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Cost of sales and services                                                                                                                                                                                       |  |                                | 232,672,021 |   |      |     | 253,449,142 |                                                           |  |     | 20,510 |  
|Commercial, administrative and general expenses                                                                                                                                                                  |  |                                | 96,466,604  |   |      |     | 107,406,947 |                                                           |  |     | 8,692  |  
|Other expenses                                                                                                                                                                                                   |  |                                | 3,400,145   |   |      |     | 3,606,853   |                                                           |  |     | 292    |  
|Depreciation and amortization (Notes 8 and 9) (includes Ps. 55,933,013 and Ps. 63,749,928 corresponding to the years ended
December 31, 2009 and 2010, respectively, not included in cost of sales and services) |  |                                | 79,904,304  |   |      |     | 91,071,327  |                                                           |  |     | 7,370  |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|                                                                                                                                                                                                                 |  |                                | 412,443,074 |   |      |     | 455,534,269 |                                                           |  |     | 36,864 |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Operating income                                                                                                                                                                                                 |  |                                | 148,811,524 |   |      |     | 152,321,409 |                                                           |  |     | 12,327 |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Interest income                                                                                                                                                                                                  |  |                                | 3,666,804   |   |      |     | 4,801,539   |                                                           |  |     | 389    |  
|Interest expense                                                                                                                                                                                                 |  |                                | (14,595,493 | ) |      |     | (17,280,735 | )                                                         |  |     | (1,398 | )
|Exchange gain, net                                                                                                                                                                                               |  |                                | 13,419,862  |   |      |     | 5,581,574   |                                                           |  |     | 452    |  
|Valuation of derivatives and other financial items, net                                                                                                                                                          |  |                                | (10,061,863 | ) |      |     | (11,975,955 | )                                                         |  |     | (969   | )
|Equity interest in net income of associated company                                                                                                                                                              |  |                                | 1,959,378   |   |      |     | 1,671,210   |                                                           |  |     | 135    |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Profit before income tax                                                                                                                                                                                         |  |                                | 143,200,212 |   |      |     | 135,119,042 |                                                           |  |     | 10,936 |  
|Income tax (Note 20)                                                                                                                                                                                             |  |                                | 36,299,167  |   |      |     | 36,213,619  |                                                           |  |     | 2,932  |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Net profit for the period                                                                                                                                                                                        |  | Ps.                            | 106,901,045 |   |      | Ps. | 98,905,423  |                                                           |  | USD | 8,004  |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Net profit for the period attributable to:                                                                                                                                                                       |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Equity holders of the parent                                                                                                                                                                                     |  | Ps.                            | 92,697,553  |   |      | Ps. | 91,123,052  |                                                           |  | USD | 7,374  |  
|Non-controlling interests                                                                                                                                                                                        |  |                                | 14,203,492  |   |      |     | 7,782,371   |                                                           |  |     | 630    |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|                                                                                                                                                                                                                 |  | Ps.                            | 106,901,045 |   |      | Ps. | 98,905,423  |                                                           |  | USD | 8,004  |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Other comprehensive income items:                                                                                                                                                                                |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Effect of translation of foreign entities                                                                                                                                                                        |  | Ps.                            | 33,142,627  |   |      | Ps. | (7,155,708  | )                                                         |  | USD | (577   | )
|Effect of fair value of derivatives, net of deferred taxes                                                                                                                                                       |  |                                | (1,366,643  | ) |      |     | (675,686    | )                                                         |  |     | (53    | )
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Total other comprehensive income items for the period                                                                                                                                                            |  |                                | 31,775,984  |   |      |     | (7,831,394  | )                                                         |  |     | (630   | )
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Total comprehensive income for the period                                                                                                                                                                        |  | Ps.                            | 138,677,029 |   |      | Ps. | 91,074,029  |                                                           |  | USD | 7,374  |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Comprehensive income for the period attributable to:                                                                                                                                                             |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Equity holders of the parent                                                                                                                                                                                     |  | Ps.                            | 115,031,755 |   |      | Ps. | 82,792,909  |                                                           |  | USD | 6,702  |  
|Non-controlling interests                                                                                                                                                                                        |  |                                | 23,645,274  |   |      |     | 8,281,120   |                                                           |  |     | 672    |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|                                                                                                                                                                                                                 |  | Ps.                            | 138,677,029 |   |      | Ps. | 91,074,029  |                                                           |  | USD | 7,374  |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  
|Basic and diluted earnings per share attributable to equity holders of the parent                                                                                                                                |  | $                              | 2.38        |   |      | $   | 2.31        |                                                           |  | USD | 0.18   |  
|                                                                                                                                                                                                                 |  |                                |             |   |      |     |             |                                                           |  |     |        |  

The accompanying notes are an integral part of these financial statements.



F-3



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##### Table of Contents

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Changes in Equity

For the years ended December 31, 2009 and 2010

(In thousands of
Mexican pesos)



|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|--------------------------------------------------------------------------------------------- |  | ------------- | ---------- | - | ------------- | --- | ------- | ---------------- |  | --- | ---------------------- | - |  | -------------------------------------------------------------------- | ----------- | - | --------------------- | --- | --------- | ----------------------------------------------------- |  | --- | ------------------------ | - |  | ----------- | ----------- | - |  | --- | ----------- | - |  | --- | ----------- | -
|                                                                                              |  | Capital stock |            |   | Legal reserve |     |         | Retainedearnings |  |     | Total retainedearnings |   |  | Effect of derivativefinancialinstrumentsacquired forhedging
purposes |             |   | Effect 
oftranslation |     |           | Total
equityattributableto equityholders ofthe parent |  |     | Non-controllinginterests |   |  | Totalequity |            
|Balance at January 1, 2009                                                                    |  | Ps.           | 30,125,141 |   |               | Ps. | 358,440 |                  |  | Ps. | 150,505,445            |   |  | Ps.                                                                  | 150,863,885 |   |                       | Ps. | 1,077,400 |                                                       |  | Ps. |                          |   |  | Ps.         | 182,066,426 |   |  | Ps. | 58,719,538  |   |  | Ps. | 240,785,964 |  
|Net profit for the period                                                                     |  |               |            |   |               |     |         |                  |  |     | 92,697,553             |   |  |                                                                      | 92,697,553  |   |                       |     |           |                                                       |  |     |                          |   |  |             | 92,697,553  |   |  |     | 14,203,492  |   |  |     | 106,901,045 |  
|Effect of fair value of derivatives, net of deferred taxes                                    |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     | (641,878  | )                                                     |  |     |                          |   |  |             | (641,878    | ) |  |     | (724,765    | ) |  |     | (1,366,643  | )
|Effect of translation of foreign entities                                                     |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     | 22,976,080               |   |  |             | 22,976,080  |   |  |     | 10,166,547  |   |  |     | 33,142,627  |  
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Comprehensive income for the period                                                           |  |               |            |   |               |     |         |                  |  |     | 92,697,553             |   |  |                                                                      | 92,697,553  |   |                       |     | (641,878  | )                                                     |  |     | 22,976,080               |   |  |             | 115,031,755 |   |  |     | 23,645,274  |   |  |     | 138,677,029 |  
|Dividends                                                                                     |  |               |            |   |               |     |         |                  |  |     | (25,979,049            | ) |  |                                                                      | (25,979,049 | ) |                       |     |           |                                                       |  |     |                          |   |  |             | (25,979,049 | ) |  |     | (7,618,699  | ) |  |     | (33,597,748 | )
|Repurchase of shares                                                                          |  |               | (9,592     | ) |               |     |         |                  |  |     | (27,244,798            | ) |  |                                                                      | (27,244,798 | ) |                       |     |           |                                                       |  |     | 4,371                    |   |  |             | (27,250,019 | ) |  |     | (4,280,548  | ) |  |     | (31,530,567 | )
|Other                                                                                         |  |               |            |   |               |     |         |                  |  |     | 882,992                |   |  |                                                                      | 882,992     |   |                       |     |           |                                                       |  |     |                          |   |  |             | 882,992     |   |  |     |             |   |  |     | 882,992     |  
|Acquisition of non-controlling interests                                                      |  |               |            |   |               |     |         |                  |  |     | (625,032               | ) |  |                                                                      | (625,032    | ) |                       |     |           |                                                       |  |     |                          |   |  |             | (625,032    | ) |  |     | (526,821    | ) |  |     | (1,151,853  | )
|Excess in purchase price over book value of acquired shares of companies under common control |  |               |            |   |               |     |         |                  |  |     | (262,305               | ) |  |                                                                      | (262,305    | ) |                       |     |           |                                                       |  |     |                          |   |  |             | (262,305    | ) |  |     | (5,352      | ) |  |     | (267,657    | )
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Balance at December 31, 2009                                                                  |  |               | 30,115,549 |   |               |     | 358,440 |                  |  |     | 189,974,806            |   |  |                                                                      | 190,333,246 |   |                       |     | 435,522   |                                                       |  |     | 22,980,451               |   |  |             | 243,864,768 |   |  |     | 69,933,392  |   |  |     | 313,798,160 |  
|Net profit for the period                                                                     |  |               |            |   |               |     |         |                  |  |     | 91,123,052             |   |  |                                                                      | 91,123,052  |   |                       |     |           |                                                       |  |     |                          |   |  |             | 91,123,052  |   |  |     | 7,782,371   |   |  |     | 98,905,423  |  
|Effect of fair value of derivatives, net of deferred taxes                                    |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     | (401,357  | )                                                     |  |     |                          |   |  |             | (401,357    | ) |  |     | (274,329    | ) |  |     | (675,686    | )
|Effect of translation of foreign entities                                                     |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     | (7,928,786               | ) |  |             | (7,928,786  | ) |  |     | 773,078     |   |  |     | (7,155,708  | )
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Comprehensive income for the period                                                           |  |               |            |   |               |     |         |                  |  |     | 91,123,052             |   |  |                                                                      | 91,123,052  |   |                       |     | (401,357  | )                                                     |  |     | (7,928,786               | ) |  |             | 82,792,909  |   |  |     | 8,281,120   |   |  |     | 91,074,029  |  
|Dividends                                                                                     |  |               |            |   |               |     |         |                  |  |     | (12,948,813            | ) |  |                                                                      | (12,948,813 | ) |                       |     |           |                                                       |  |     |                          |   |  |             | (12,948,813 | ) |  |     | (4,016,583  | ) |  |     | (16,965,396 | )
|Repurchase of shares                                                                          |  |               | (4,576     | ) |               |     |         |                  |  |     | (17,488,212            | ) |  |                                                                      | (17,488,212 | ) |                       |     |           |                                                       |  |     |                          |   |  |             | (17,492,788 | ) |  |     |             |   |  |     | (17,492,788 | )
|Contribution by non-controlling interests                                                     |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     | 10,009      |   |  |     | 10,009      |  
|Non-controlling interests generated by business combination                                   |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     | 280,548     |   |  |     | 280,548     |  
|Acquisition of non-controlling interests through public offerings                             |  |               | 66,322,488 |   |               |     |         |                  |  |     | (54,886,581            | ) |  |                                                                      | (54,886,581 | ) |                       |     |           |                                                       |  |     |                          |   |  |             | 11,435,907  |   |  |     | (46,103,299 | ) |  |     | (34,667,392 | )
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Balance at December 31, 2010                                                                  |  | Ps.           | 96,433,461 |   |               | Ps. | 358,440 |                  |  | Ps. | 195,774,252            |   |  | Ps.                                                                  | 196,132,692 |   |                       | Ps. | 34,165    |                                                       |  | Ps. | 15,051,665               |   |  | Ps.         | 307,651,983 |   |  | Ps. | 28,385,187  |   |  | Ps. | 336,037,170 |  
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                        |   |  |                                                                      |             |   |                       |     |           |                                                       |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  

The accompanying notes are an integral part of these financial statements.



F-4



---

##### Table of Contents

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Statements of Cash Flows

(In thousands of Mexican pesos)



|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|---------------------------------------------------------- |  | ------------------------------ | ------------ | - | ---- | --- | ------------ | ---------------------------- |  | --- | ------- | -
|                                                           |  | For the year ended December 31 |             
|                                                           |  | 2009                           |              |   | 2010 |     |              | Millions of 
U.S.dollars2010 | 
|Operating activities                                       |  |                                |              |   |      |     |              |                              |  |     |         |  
|Profit before income tax                                   |  | Ps.                            | 143,200,212  |   |      | Ps. | 135,119,042  |                              |  | USD | 10,936  |  
|Items not requiring the use of cash:                       |  |                                |              |   |      |     |              |                              |  |     |         |  
|Depreciation                                               |  |                                | 71,950,246   |   |      |     | 80,294,690   |                              |  |     | 6,497   |  
|Amortization of intangible assets                          |  |                                | 7,954,058    |   |      |     | 10,776,637   |                              |  |     | 872     |  
|Equity interest in net income of associated companies      |  |                                | (1,959,378   | ) |      |     | (1,671,210   | )                            |  |     | (135    | )
|(Gain) loss on sale of fixed assets                        |  |                                | (403,030     | ) |      |     | 806,391      |                              |  |     | 65      |  
|Net period cost of labor obligations                       |  |                                | 5,763,956    |   |      |     | 6,160,141    |                              |  |     | 498     |  
|Exchange gain, net                                         |  |                                | (4,828,496   | ) |      |     | (3,727,490   | )                            |  |     | (301    | )
|Interest expense                                           |  |                                | 14,595,493   |   |      |     | 17,280,735   |                              |  |     | 1,398   |  
|Valuation of derivatives, net                              |  |                                | (1,838,672   | ) |      |     | 1,864,578    |                              |  |     | 150     |  
|Working capital adjustments:                               |  |                                |              |   |      |     |              |                              |  |     |         |  
|Accounts receivable                                        |  |                                | (7,610,356   | ) |      |     | 302,354      |                              |  |     | 24      |  
|Prepaid expenses                                           |  |                                | 1,148,230    |   |      |     | (1,239,958   | )                            |  |     | (100    | )
|Related parties                                            |  |                                | 707,600      |   |      |     | (525,056     | )                            |  |     | (42     | )
|Inventories                                                |  |                                | 9,926,393    |   |      |     | (2,868,024   | )                            |  |     | (232    | )
|Other assets                                               |  |                                | (124,899     | ) |      |     | (4,408,473   | )                            |  |     | (359    | )
|Accounts payable and accrued liabilities                   |  |                                | 9,764,568    |   |      |     | 10,192,387   |                              |  |     | 824     |  
|Employee profit sharing                                    |  |                                | (1,132,677   | ) |      |     | (3,446,374   | )                            |  |     | (278    | )
|Financial instruments                                      |  |                                | 5,726,316    |   |      |     | 2,508,129    |                              |  |     | 202     |  
|Deferred revenues                                          |  |                                | 1,344,792    |   |      |     | 1,373,800    |                              |  |     | 111     |  
|Labor obligations                                          |  |                                | (6,509,295   | ) |      |     | (1,797,077   | )                            |  |     | (145    | )
|Income tax paid                                            |  |                                | (31,203,046  | ) |      |     | (45,410,398  | )                            |  |     | (3,674  | )
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Net cash flow provided by operating activities             |  |                                | 216,472,015  |   |      |     | 201,584,824  |                              |  |     | 16,311  |  
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Purchase of property, plant and equipment                  |  |                                | (77,447,018  | ) |      |     | (77,866,409  | )                            |  |     | (6,301  | )
|Acquisition of licenses                                    |  |                                | (2,384,001   | ) |      |     | (4,075,229   | )                            |  |     | (329    | )
|Proceeds from sale of fixed assets                         |  |                                | 556,704      |   |      |     | 884,241      |                              |  |     | 71      |  
|Acquisition of equity investments                          |  |                                | (339,701     | ) |      |     | (31,463,621  | )                            |  |     | (2,546  | )
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Net cash flow used in investing activities                 |  |                                | (79,614,016  | ) |      |     | (112,521,018 | )                            |  |     | (9,105  | )
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Financing activities                                       |  |                                |              |   |      |     |              |                              |  |     |         |  
|Loans obtained                                             |  |                                | 79,685,696   |   |      |     | 180,852,643  |                              |  |     | 14,635  |  
|Repayment of loans                                         |  |                                | (112,614,308 | ) |      |     | (148,899,354 | )                            |  |     | (12,049 | )
|Interest paid                                              |  |                                | (15,927,620  | ) |      |     | (14,719,299  | )                            |  |     | (1,191  | )
|Repurchase of shares                                       |  |                                | (31,482,657  | ) |      |     | (18,150,990  | )                            |  |     | (1,468  | )
|Dividend paid                                              |  |                                | (33,081,026  | ) |      |     | (17,193,902  | )                            |  |     | (1,391  | )
|Acquisition of non-controlling interests                   |  |                                | (1,151,853   | ) |      |     | (34,667,391  | )                            |  |     | (2,805  | )
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Net cash flow used in financing activities                 |  |                                | (114,571,768 | ) |      |     | (52,778,293  | )                            |  |     | (4,269  | )
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Net increase in cash and cash equivalents                  |  |                                | 22,286,231   |   |      |     | 36,285,513   |                              |  |     | 2,937   |  
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Adjustment to cash flows due to exchange rate fluctuations |  |                                | 1,194,606    |   |      |     | (113,581     | )                            |  |     | (9      | )
|Cash and cash equivalents at beginning of period           |  |                                | 36,285,696   |   |      |     | 59,766,533   |                              |  |     | 4,836   |  
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  
|Cash and cash equivalents at end of period                 |  | Ps.                            | 59,766,533   |   |      | Ps. | 95,938,465   |                              |  | USD | 7,764   |  
|                                                           |  |                                |              |   |      |     |              |                              |  |     |         |  

Non-cash transactions related to:



|                              |  |                                |            |  |      |     |            | 
|----------------------------- |  | ------------------------------ | ---------- |  | ---- | --- | ---------- | 
|                              |  | For the year ended December 31 |           
|                              |  | 2009                           |            |  | 2010 |    
|Investing activities          |  |                                |            |  |      |     |            | 
|Property, plant and equipment |  | Ps.                            | 39,442,073 |  |      | Ps. | 7,708,000  | 
|Financing activities          |  |                                |            |  |      |     |            | 
|Capital stock                 |  |                                |            |  |      | Ps  | 66,322,488 | 

The accompanying notes are an
integral part of these financial statements.



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##### Table of Contents

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Notes to Consolidated Financial Statements

December 31, 2009 and 2010

(In thousands of Mexican pesos and thousands of
U.S. dollars, unless otherwise indicated)

1. Description of the business and Relevant Events

América Móvil, S.A.B. de C.V. and subsidiaries (hereinafter, the Company or América Móvil) was incorporated
under laws of Mexico on September 25, 2000. The Company provides telecommunications services in 18 countries throughout the United States, Latin America and the Caribbean. These telecommunications services include mobile and fixed voice
services, mobile and fixed data services, internet access and paid TV, as well as other related services.

- The voice services provided by
the Company, both mobile and fixed, mainly include the following: airtime, local, domestic and international long-distance services, and network interconnection services.

- The data services provided by the Company include the following: value added, corporate networks, data and Internet services.

- Paid TV represents basic services, as well as pay per view and additional programming and advertising services.

- Related services mainly include equipment and computer sales, and revenues from advertising in telephone directories.

In order to provide these services, América Móvil has the necessary licenses, permits and concessions (collectively referred to herein as licenses) to build, install, operate and
exploit public and/or private telecommunications networks and provide miscellaneous telecommunications services (mostly mobile and fixed telephony services), as well as to operate frequency bands in the radio-electric spectrum to be able to provide
fixed wireless telephony and to operate frequency bands in the radio-electric spectrum for point-to-point and point-to-multipoint microwave links. The Company holds licenses in the 18 countries where it has a presence, and such licenses will expire
between 2011 through 2046. In the next two fiscal years there are no contingent liabilities for license expiration and/or extinction.



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##### Table of Contents

Certain licenses require the payment to the respective governments of a share in sales determined as a
percentage of revenues from services under concession. The percentage is set as either a fixed rate or in some cases based on certain size of the infrastructure in operation.

América Móvil is located in Mexico City at Lago Zurich # 245, Colonia Ampliación Granada, Miguel Hidalgo, zip code 11529.

The accompanying financial statements were approved for their issuance by the Board of Directors on May 10, 2011. The financial statements must also be approved by the Companys shareholders,
who have the authority to modify the Companys financial statements.

II. Relevant events

a) Public offerings

On January 13,
2010, the Company announced a tender share exchange offer to the shareholders of Carso Global Telecom, S.A.B. de C.V. (hereinafter CGT), who in turn was the holder of 60.7% of the outstanding shares of Telmex Internacional, S.A.B de C.V.
(hereinafter Telint), and of 59.4% of the outstanding shares of TMX. América Móvil also announced its intention to make a tender offer for the exchange or purchase of all of the shares of Telint not owned by CGT, which represented
39.3% of the outstanding shares as of the date of the offers.

On June 16, 2010, América Móvil completed the public offer
for the acquisition and exchange of shares, resulting in the issuance of 8,438,193,727 series L shares of América Móvil, which were received by the shareholders of CGT (7,088,921,019 shares) and the minority shareholders of Telint
(1,349,272,708 shares). The exchange ratio was set at 0.373 shares of América Móvil per share of Telint, and 2.047 shares of América Móvil per share of CGT.

In addition, the Company paid Ps. 26,783,689 (USD 2,120,640 at the exchange rate on the date of the offer) to buy shares from those minority shareholders who did not accept the share exchange. As a result
of these tender offers, the Company acquired, directly and indirectly, 92.7% of the outstanding shares of Telint and 59.4% of the outstanding shares of TMX.

From July to December of 2010, the Company increased its direct and indirect holding of the outstanding shares of Telint and TMX to 96.8% and 59.5%, respectively, through additional tender offers.

Before the CGT tender offer, 88.57% of the capital stock of CGT was held by the Slim family and consequently, that component of the CGT
tender offer was accounted for as a transaction between entities under common control with all balances and transactions recognized at historical cost (similar to the pooling-of-interests method) for all the periods presented.



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##### Table of Contents

The acquisition of non-controlling interest in the public tender offers was accounted for as an equity
transaction calculated at the market value of the offer at the date of acquisition.

b) Adoption of International Financial Reporting
Standards (IFRS)

The Company, with the respective authorization of its Board of Directors, Audit Committee, the Mexican Stock Exchange and
the Mexican National Banking and Securities Commission, decided to adopt IFRS as issued by the International Accounting Standards Board (IASB) as of December 31, 2010, using a transition date as of January 1, 2009. As a result,
the accompanying financial statements and the notes thereto have been prepared in accordance with IFRS. In the following paragraphs, the effects of IFRS adoption on the measurement, presentation and disclosure of each line item in the Companys
financial statements are explained, as well as reconciliation between Mexican FRS, as issued by the Mexican Financial Reporting Standards Research and Development Board, under which the Company was required to present its financial statements
through December 31, 2009, and IFRS.



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##### Table of Contents

i) Reconciliation of statement of financial position at January 1, 2009 (date of transition to IFRS)



|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|----------------------------------------------------- |  | ------------------------------------------ | -------------- |  | -------------------------------- | --- | ----------- | --------------- |  |  | ------------------------------------ |  |  | --- | ----------- | 
|                                                      |  | Amounts underMexican FRS atJanuary 1, 2009 |                |  | Adjustments andreclassifications |     |             | Explanatorynote |  |  | Amounts under IFRSat January 1, 2009 | 
|Assets                                                |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Current assets:                                       |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Cash and cash equivalents                             |  | Ps.                                        | 36,285,696     |  |                                  |     |             |                 |  |  |                                      |  |  | Ps. | 36,285,696  | 
|Accounts receivable, net                              |  |                                            | 92,993,104     |  |                                  |     |             |                 |  |  |                                      |  |  |     | 92,993,104  | 
|Derivative financial instruments                      |  |                                            | 27,742,692     |  |                                  | Ps. | (716,219    | )               |  |  | 8                                    |  |  |     | 27,026,473  | 
|Related parties                                       |  |                                            | 2,250,945      |  |                                  |     |             |                 |  |  |                                      |  |  |     | 2,250,945   | 
|Inventories, net                                      |  |                                            | 35,696,373     |  |                                  |     |             |                 |  |  |                                      |  |  |     | 35,696,373  | 
|Other current assets, net                             |  |                                            | 8,023,115      |  |                                  |     | (36,546     | )               |  |  | 1                                    |  |  |     | 7,986,569   | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Total current assets                                  |  |                                            | 202,991,925    |  |                                  |     | (752,765    | )               |  |  |                                      |  |  |     | 202,239,160 | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Non-current assets:                                   |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Property, plant and equipment, net                    |  |                                            | 389,286,800    |  |                                  |     | 1,240,957   |                 |  |  | 1,2,6                                |  |  |     | 390,527,757 | 
|Licenses and rights of use, net                       |  |                                            | 48,034,129     |  |                                  |     | (6,254,613  | )               |  |  | 1,5                                  |  |  |     | 41,779,516  | 
|Trademarks, net                                       |  |                                            | 6,745,449      |  |                                  |     | (331,666    | )               |  |  | 1                                    |  |  |     | 6,413,783   | 
|Goodwill                                              |  |                                            | 64,706,795     |  |                                  |     |             |                 |  |  |                                      |  |  |     | 64,706,795  | 
|Investment in associated companies and others         |  |                                            | 11,908,745     |  |                                  |     | (30,806     | )               |  |  | 1                                    |  |  |     | 11,877,939  | 
|Deferred taxes                                        |  |                                            | 15,170,602     |  |                                  |     | 133,746     |                 |  |  | 3                                    |  |  |     | 15,304,348  | 
|Pension asset                                         |  |                                            | 15,485,008     |  |                                  |     | (1,237,219  | )               |  |  | 4                                    |  |  |     | 14,247,789  | 
|Other non-current assets, net                         |  |                                            | 11,773,373     |  |                                  |     | (5,744,125  | )               |  |  | 1,6                                  |  |  |     | 6,029,248   | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Total assets                                          |  |                                            | Ps.766,102,826 |  |                                  | Ps. | (12,976,491 | )               |  |  |                                      |  |  | Ps. | 753,126,335 | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Liabilities and equity                                |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Current liabilities:                                  |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Short-term debt and current portion of long-term debt |  | Ps.                                        | 68,358,159     |  |                                  |     |             |                 |  |  |                                      |  |  | Ps. | 68,358,159  | 
|Accounts payable and accrued liabilities              |  |                                            | 120,215,495    |  |                                  | Ps. | (745,464    | )               |  |  | 6                                    |  |  |     | 119,470,031 | 
|Taxes payable                                         |  |                                            | 16,441,205     |  |                                  |     |             |                 |  |  |                                      |  |  |     | 16,441,205  | 
|Related parties                                       |  |                                            | 2,187,104      |  |                                  |     |             |                 |  |  |                                      |  |  |     | 2,187,104   | 
|Deferred revenues                                     |  |                                            | 20,001,092     |  |                                  |     | 1,219,704   |                 |  |  | 6                                    |  |  |     | 21,220,796  | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Total current liabilities                             |  |                                            | 227,203,055    |  |                                  |     | 474,240     |                 |  |  |                                      |  |  |     | 227,677,295 | 
|                                                      |  |                                            |                | 
|Long-term liabilities:                                |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Long-term debt                                        |  |                                            | 242,357,779    |  |                                  |     |             |                 |  |  |                                      |  |  |     | 242,357,779 | 
|Deferred taxes                                        |  |                                            | 33,841,069     |  |                                  |     | (5,614,862  | )               |  |  | 3                                    |  |  |     | 28,226,207  | 
|Deferred revenues                                     |  |                                            | 438,668        |  |                                  |     | (10,854     | )               |  |  | 1                                    |  |  |     | 427,814     | 
|Employee benefits                                     |  |                                            | 18,656,551     |  |                                  |     | (5,005,275  | )               |  |  | 4                                    |  |  |     | 13,651,276  | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Total liabilities                                     |  |                                            | 522,497,122    |  |                                  |     | (10,156,751 | )               |  |  |                                      |  |  |     | 512,340,371 | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Equity:                                               |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Capital stock                                         |  |                                            | 42,884,473     |  |                                  |     | (12,759,332 | )               |  |  | 1                                    |  |  |     | 30,125,141  | 
|Retained earnings                                     |  |                                            | 122,035,793    |  |                                  |     | 28,828,092  |                 |  |  | 1,2,3,5,7                            |  |  |     | 150,863,885 | 
|Other comprehensive income items                      |  |                                            | 21,894,899     |  |                                  |     | (20,817,499 | )               |  |  | 3,7                                  |  |  |     | 1,077,400   | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Equity attributable to equity holders of the parent   |  |                                            | 186,815,165    |  |                                  |     | (4,748,739  | )               |  |  |                                      |  |  |     | 182,066,426 | 
|Non-controlling interests                             |  |                                            | 56,790,539     |  |                                  |     | 1,928,999   |                 |  |  |                                      |  |  |     | 58,719,538  | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Total equity                                          |  |                                            | 243,605,704    |  |                                  |     | (2,819,740  | )               |  |  |                                      |  |  |     | 240,785,964 | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 
|Total liabilities and equity                          |  | Ps.                                        | 766,102,826    |  |                                  | Ps. | (12,976,491 | )               |  |  |                                      |  |  | Ps. | 753,126,335 | 
|                                                      |  |                                            |                |  |                                  |     |             |                 |  |  |                                      |  |  |     |             | 



F-9



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##### Table of Contents

ii) Reconciliation of statement of financial position at December 31, 2009



|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|----------------------------------------------------- |  | -------------------------------------------- | ----------- |  | -------------------------------- | --- | ----------- | --------------- |  |  | --------------------------------------- |  |  | --- | ----------- | 
|                                                      |  | Amounts underMexican FRS atDecember 31, 2009 |             |  | Adjustments andreclassifications |     |             | Explanatorynote |  |  | Amounts under IFRSat December 
31, 2009 | 
|Assets                                                |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Current assets:                                       |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Cash and cash equivalents                             |  | Ps.                                          | 59,766,533  |  |                                  |     |             |                 |  |  |                                         |  |  | Ps. | 59,766,533  | 
|Accounts receivable, net                              |  |                                              | 93,502,753  |  |                                  |     |             |                 |  |  |                                         |  |  |     | 93,502,753  | 
|Derivative financial instruments                      |  |                                              | 11,803,598  |  |                                  | Ps. | (137,028    | )               |  |  | 8                                       |  |  |     | 11,666,570  | 
|Related parties                                       |  |                                              | 3,109,050   |  |                                  |     |             |                 |  |  |                                         |  |  |     | 3,109,050   | 
|Inventories, net                                      |  |                                              | 23,755,525  |  |                                  |     |             |                 |  |  |                                         |  |  |     | 23,755,525  | 
|Other current assets, net                             |  |                                              | 8,393,185   |  |                                  |     | 4,657       |                 |  |  | 1                                       |  |  |     | 8,397,842   | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Total current assets                                  |  |                                              | 200,330,644 |  |                                  |     | (132,371    | )               |  |  |                                         |  |  |     | 200,198,273 | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Non-current assets:                                   |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Property, plant and equipment, net                    |  |                                              | 418,852,677 |  |                                  |     | (120,045    | )               |  |  | 1,2,6                                   |  |  |     | 418,732,632 | 
|Licenses and rights of use, net                       |  |                                              | 55,871,793  |  |                                  |     | (5,340,111  | )               |  |  | 1,5                                     |  |  |     | 50,531,682  | 
|Trademarks, net                                       |  |                                              | 5,790,443   |  |                                  |     | (256,287    | )               |  |  | 1                                       |  |  |     | 5,534,156   | 
|Goodwill                                              |  |                                              | 69,196,166  |  |                                  |     |             |                 |  |  |                                         |  |  |     | 69,196,166  | 
|Investment in associated companies and others         |  |                                              | 17,588,440  |  |                                  |     | (30,806     | )               |  |  | 1                                       |  |  |     | 17,557,634  | 
|Deferred taxes                                        |  |                                              | 22,174,686  |  |                                  |     | 133,746     |                 |  |  | 3                                       |  |  |     | 22,308,432  | 
|Pension asset                                         |  |                                              | 16,430,243  |  |                                  |     | (1,216,051  | )               |  |  | 4                                       |  |  |     | 15,214,192  | 
|Other non-current assets, net                         |  |                                              | 11,597,783  |  |                                  |     | (3,537,337  | )               |  |  | 1,6                                     |  |  |     | 8,060,446   | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Total assets                                          |  | Ps.                                          | 817,832,875 |  |                                  | Ps. | (10,499,262 | )               |  |  |                                         |  |  | Ps. | 807,333,613 | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Liabilities and equity                                |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Current liabilities:                                  |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Short-term debt and current portion of long-term debt |  | Ps.                                          | 44,967,190  |  |                                  |     |             |                 |  |  |                                         |  |  | Ps. | 44,967,190  | 
|Accounts payable and accrued liabilities              |  |                                              | 125,740,614 |  |                                  | Ps. | (1,162,438  | )               |  |  | 6                                       |  |  |     | 124,578,176 | 
|Taxes payable                                         |  |                                              | 19,667,826  |  |                                  |     |             |                 |  |  |                                         |  |  |     | 19,667,826  | 
|Related parties                                       |  |                                              | 2,120,896   |  |                                  |     |             |                 |  |  |                                         |  |  |     | 2,120,896   | 
|Deferred revenues                                     |  |                                              | 21,839,075  |  |                                  |     | 1,635,977   |                 |  |  | 6                                       |  |  |     | 23,475,052  | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Total current liabilities                             |  |                                              | 214,335,601 |  |                                  |     | 473,539     |                 |  |  |                                         |  |  |     | 214,809,140 | 
|Long-term liabilities:                                |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Long-term debt                                        |  |                                              | 232,274,489 |  |                                  |     |             |                 |  |  |                                         |  |  |     | 232,274,489 | 
|Deferred taxes                                        |  |                                              | 45,089,488  |  |                                  |     | (18,047,562 | )               |  |  | 3                                       |  |  |     | 27,041,926  | 
|Deferred revenues                                     |  |                                              | 5,471,287   |  |                                  |     | (8,897      | )               |  |  |                                         |  |  |     | 5,462,390   | 
|Employee benefits                                     |  |                                              | 17,739,116  |  |                                  |     | (3,791,608  | )               |  |  | 4                                       |  |  |     | 13,947,508  | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Total liabilities                                     |  |                                              | 514,909,981 |  |                                  |     | (21,374,528 | )               |  |  |                                         |  |  |     | 493,535,453 | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Equity:                                               |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Capital stock                                         |  |                                              | 42,874,880  |  |                                  |     | (12,759,331 | )               |  |  | 1                                       |  |  |     | 30,115,549  | 
|Retained earnings                                     |  |                                              | 159,896,440 |  |                                  |     | 30,436,806  |                 |  |  | 1,2,3,5,7                               |  |  |     | 190,333,246 | 
|Other comprehensive income items                      |  |                                              | 34,664,984  |  |                                  |     | (11,249,011 | )               |  |  | 3,7                                     |  |  |     | 23,415,973  | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Equity attributable to equity holders of the parent   |  |                                              | 237,436,304 |  |                                  |     | 6,428,464   |                 |  |  |                                         |  |  |     | 243,864,768 | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Non-controlling interests                             |  |                                              | 65,486,590  |  |                                  |     | 4,446,802   |                 |  |  |                                         |  |  |     | 69,933,392  | 
|Total equity                                          |  |                                              | 302,922,894 |  |                                  |     | 10,875,266  |                 |  |  |                                         |  |  |     | 313,798,160 | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 
|Total liabilities and equity                          |  | Ps.                                          | 817,832,875 |  |                                  | Ps. | (10,499,262 | )               |  |  |                                         |  |  | Ps. | 807,333,613 | 
|                                                      |  |                                              |             |  |                                  |     |             |                 |  |  |                                         |  |  |     |             | 



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##### Table of Contents

iii) Reconciliation of statement of income for the year ended December 31, 2009



|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|------------------------------------------------------- |  | ------------------------ | ----------- | - | -------------------------------- | --- | ----------- | --------------- |  |  | ------------------ |  |  | --- | ----------- | -
|                                                        |  | Amounts underMexican FRS |             |   | Adjustments andreclassifications |     |             | Explanatorynote |  |  | Amounts under IFRS | 
|Operating revenues                                      |  | Ps.                      | 580,079,268 |   |                                  | Ps. | (18,824,670 | )               |  |  | 6                  |  |  | Ps. | 561,254,598 |  
|                                                        |  |                          |             |  
|Operating costs and expenses:                           |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|Cost of sales and services                              |  |                          | 232,725,435 |   |                                  |     | (53,414     | )               |  |  | 4                  |  |  |     | 232,672,021 |  
|Commercial, administrative and general expenses         |  |                          | 115,863,374 |   |                                  |     | (19,396,770 | )               |  |  | 4,6                |  |  |     | 96,466,604  |  
|Other expenses                                          |  |                          |             |   |                                  |     | 3,400,145   |                 |  |  | 6                  |  |  |     | 3,400,145   |  
|Depreciation and amortization                           |  |                          | 82,700,702  |   |                                  |     | (2,796,398  | )               |  |  | 1,2,5              |  |  |     | 79,904,304  |  
|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|Total operating costs and expenses                      |  |                          | 431,289,511 |   |                                  |     | (18,846,437 | )               |  |  |                    |  |  |     | 412,443,074 |  
|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|Operating income                                        |  |                          | 148,789,757 |   |                                  |     | 21,767      |                 |  |  |                    |  |  |     | 148,811,524 |  
|Other expenses, net                                     |  |                          | (1,909,870  | ) |                                  |     | 1,909,870   |                 |  |  | 6                  |  |  |     |             |  
|                                                        |  |                          |             |  
|Interest income                                         |  |                          | 3,666,804   |   |                                  |     |             |                 |  |  |                    |  |  |     | 3,666,804   |  
|Interest expense                                        |  |                          | (14,597,606 | ) |                                  |     | 2,113       |                 |  |  |                    |  |  |     | (14,595,493 | )
|Exchange gain, net                                      |  |                          | 12,776,876  |   |                                  |     | 642,986     |                 |  |  | 2                  |  |  |     | 13,419,862  |  
|Valuation of derivatives and other financial items, net |  |                          | (9,654,774  | ) |                                  |     | (407,089    | )               |  |  | 2                  |  |  |     | (10,061,863 | )
|Equity interest in net income of associated companies   |  |                          | 1,959,378   |   |                                  |     |             |                 |  |  |                    |  |  |     | 1,959,378   |  
|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|Profit before income tax                                |  |                          | 141,030,565 |   |                                  |     | 2,169,647   |                 |  |  |                    |  |  |     | 143,200,212 |  
|Income tax                                              |  |                          | 35,552,470  |   |                                  |     | 746,697     |                 |  |  | 3                  |  |  |     | 36,299,167  |  
|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|Net profit for the period                               |  | Ps.                      | 105,478,095 |   |                                  | Ps. | 1,422,950   |                 |  |  |                    |  |  | Ps. | 106,901,045 |  
|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|Net profit for the year attributable to:                |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|Equity holders of the parent                            |  | Ps.                      | 91,088,839  |   |                                  | Ps. | 1,608,714   |                 |  |  |                    |  |  | Ps. | 92,697,553  |  
|Non-controlling interests                               |  |                          | 14,389,257  |   |                                  |     | (185,765    | )               |  |  |                    |  |  |     | 14,203,492  |  
|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  
|                                                        |  | Ps.                      | 105,478,095 |   |                                  | Ps. | 1,422,950   |                 |  |  |                    |  |  | Ps. | 106,901,045 |  
|                                                        |  |                          |             |   |                                  |     |             |                 |  |  |                    |  |  |     |             |  

Explanatory notes for the reconciliation of the statement of financial position at January 1, 2009 and at
December 31, 2009 and the reconciliation of the statement of income for the year ended December 31, 2009

1. Property, plant
and equipment, intangible assets, capital stock and other equity accounts

Property, plant and equipment

For purposes of the adoption of IFRS, the attributed cost at the transition date was the restated amount (i.e., includes the effects of inflation through
December 31, 2007) of property, plant and equipment as determined under Mexican FRS at December 31, 2008. The foregoing is in accordance with the exemption permitted under IFRS 1 regarding the use of a revaluation of such assets to a
price-index adjusted cost, which is considered to be broadly comparable or similar to their fair value, as the deemed cost at the date of transition. Accordingly, no adjustment to property, plant and equipment was necessary in the opening statement
of financial position.



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Intangible assets

In accordance with Mexican FRS, as of January 1, 2008, the Company began to recognize its intangibles (licenses and trademarks) at acquisition cost. Through December 31, 2007, these assets were
restated based on the inflation factors of each country. Under IFRS, the effects of inflation need only be recognized when the entity operates in a hyperinflationary economic environment. One of the features of a hyperinflationary economic
environment is when the cumulative inflation rate in the prior three years is equal to or exceeds 100%. The Company and its subsidiaries currently operate in non-hyperinflationary economic environments. Therefore, the Company reversed the effects of
inflation recognized in its intangibles at December 31, 2007. At the transition date, the elimination of the effects of inflation amounted to Ps.5,391,817 for the licenses and Ps. 331,666 for the trademarks.

Capital stock and other equity accounts

Under Mexican FRS, capital stock and retained earnings were restated for inflation through December 31, 2007 based on the National Consumer Price
Index (NCPI).

General

For
purposes of the adoption to IFRS, América Móvil decided to use as deemed cost at the date of transition the restated amounts of property, plant and equipment determined in conformity with Mexican FRS at December 31, 2008, which
includes the effects of inflation through December 31, 2007.

The abovementioned methodology is in conformity with the exemption
permitted under IFRS 1 regarding the use of fair value or revaluation as deemed cost at the date of transition.

América Móvil
eliminated the effects of inflation on capital stock recognized from 2000 (date of incorporation) through December 31, 2007, since under IFRS, entities are required to recognize the effects of inflation only when they operate in
hyperinflationary environments. One of the characteristics of a hyperinflationary environment is that the cumulative rate of inflation in the preceding three years is equal to or greater than 100%. At the transition date, the elimination of the
effects of inflation in the capital stock amounted to Ps.12,759,332. Since for purposes of Mexican FRS the Company did not need to record the effects of inflation for the year ended December 31, 2009, the amount of the adjustment at
December 31, 2009 is equal to the adjustment recorded at the transition date.



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2. Capitalizable Interest in Projects in Process

Beginning January 1, 2007, Mexican FRS establish that entities must capitalize comprehensive financing cost (CFC), which consists of cost of interest
expense, the net monetary position result and exchange differences related to financing obtained from foreign financial institutions in foreign currency. Prior to January 1, 2007, capitalization of interest to projects in process was optional,
and the capitalization of all items included in comprehensive result of financing was not defined.

IFRS establish that entities must
capitalize financing costs that are directly attributable to the acquisition, construction or production of qualifying assets as part of the cost of such assets.

As mentioned in note 1 above, América Móvil considered as deemed cost at the date of transition to IFRS the revalued cost of its property, plant and equipment, which includes the
capitalization of comprehensive financing result at that date.

Beginning January 1, 2009, the capitalization of borrowing costs was
determined in conformity with IFRS, without deducting the interest income, since the Company has not identified the portion of such interest that was generated on investments of the funds obtained from the loans acquired for the construction of
assets.

The cumulative effect of the adjustment for capitalization of financing costs was a decrease in the value of property, plant and
equipment of Ps. 4,465,607 (net of accumulated depreciation of Ps. 156,501) at the transition date and of Ps. 3,623,113 at December 31, 2009.

Depreciation expense related to capitalized interest recognized in operating results for the year ended December 31, 2009 was Ps.607,342.

Capitalizable interest is depreciated over an average period of seven years, which corresponds to the remaining estimated useful life of the plant.

3. Deferred Taxes

This adjustment
corresponds to the recomputation of deferred taxes, mainly for the following concepts:



| |  | Adjustments derived from the adoption of IFRS that affected the carrying value of assets and liabilities.
|- |  | ---------------------------------------------------------------------------------------------------------



| |  | The reversal of deferred tax recognized exclusively for the effects of translation of the financial statements of foreign entities in conformity with
Mexican FRS.
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

The total net effect of these adjustments was a decrease in the deferred tax liabilities of Ps. 5,481,116 at
the transition date and Ps. 17,913,816 at December 31, 2009. The change in deferred taxes for the year ended December 31, 2009 of Ps. 12,432,700 was allocated as follows: Ps. 746,698 was recognized in the statement of income and the
remainder was recognized in equity and mainly corresponds to the reversal of the deferred tax effects on foreign currency translation of foreign subsidiaries under MFRS.

4. Employee Benefits



|a) | Labor obligations and pension asset
|-- | -----------------------------------

The
differences in the valuation of labor obligations between Mexican FRS and IFRS refer mainly to the use of nominal rates for IFRS purposes instead of real rates as required for MFRS purposes until December 31, 2007.

The adjustments in valuation of long-term employee benefits of the Mexican (TMX) and Brazilian (Embratel) subsidiaries represented decreases in the
liability of Ps.155,369 at the transition date and of Ps.127,477 at December 31, 2009. Adjustments to projected net assets (decreases) of TMX at the transition date and at December 31, 2009 amounted to Ps. 1,237,219 and Ps. 1,216,051,
respectively.

There were no major adjustments recorded at the transition date for the subsidiaries in Ecuador, Mexico (other than TMX) and
Puerto Rico, all of which also have post-employment benefits. The adjustment to the valuation of the long-term employee benefits of the subsidiary in Puerto Rico represented an increase of Ps. 290,005 in the liability at December 31, 2009.

Decreases in liabilities for long-term employee benefits amounted to Ps. 5,005,275 at the transition date and to Ps. 3,791,608 at
December 31, 2009. These adjustments included the reversal of deferred employee profit sharing recognized under Mexican FRS, as explained in the following section.



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##### Table of Contents

|b) | Deferred employee profit sharing
|-- | --------------------------------

Beginning
January 1, 2008 and as a result of adopting Mexican FRS D-3, Employee Benefits, the subsidiary TMX recognized deferred employee profit sharing using the asset and liability method. Under this method, deferred employee profit sharing is
recognized by applying the 10% rate to all temporary differences between the values of assets and liabilities for financial and tax reporting purposes. IFRS do not provide specific guidelines for recognizing deferred employee profit sharing;
however, in the updates to the Interpretations of the International Financial Reporting Standards 14 issued in September 2010, the Interpretations Committee of the International Financial Reporting Standards (IFRIC) stated that IAS 19 should be
observed for the recognition of the liability for deferred employee profit sharing and that an entity need only to recognize a liability when the employee has provided the service. Therefore, the liability for deferred employee profit sharing of Ps.
4,849,906 at January 1, 2009 was eliminated for IFRS purposes. For the year ended December 31, 2009, a charge of Ps. 607,676 was recorded in the caption Commercial, administrative and general expenses to reverse the benefit
previously recognized under Mexican FRS. The liability for deferred employee profit sharing that was reversed in the Statement of Financial Position at December 31, 2009 amounted to Ps. 3,954,136.

5. Adjustment to the value of the license acquired by Radiomóvil Dipsa, S.A. de C.V. (Telcel)

In 2006, a final ruling handed down by the Administration Court in favor of Telcel established that:



| |  | The consideration paid by Telcel to the Federal Government in the amount of Ps. 116.422 as initial payment, and additional payments of Ps. 1,998,539,
for the annual share of gross revenues derived from the 15-year extension (expiring in October 2015) to the concession originally granted by the Ministry of Communications and Transportation (SCT) in October 2000, was unjustified, since such
consideration was determined in conformity with a law that was no longer in force.
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Telcel should have actually made an initial payment for the granting of the concession, in conformity with the applicable law at that time. On
April 11, 2006, the SCT ordered a modification to the amount from Ps. 116,422 to Ps. 2,265,931, for the extension and modification of the concession.
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

For Mexican FRS purposes, the Company adjusted the value of the license to reflect the current status of the asset and recognize the value of the concession granted by the Federal Government and its
respective amortization from April 2006, based on the new value assigned by the SCT, which increased the value of the license by Ps. 1,354,070 (original investment of Ps. 2,265,931, net of an accumulated amortization of Ps. 838,151, net of the
reversal of the original net value of the license of Ps. 73,710). The increase in the value of the licenses of Ps. 2,149,509 was recognized through a cash payment of Ps. 150,970 and by offsetting the Federal Governments annual share of gross
revenues with additional payments of Ps. 1,998,539. The related effect represented a credit to results of operations of Ps. 1,203,100 in 2006, which was recorded as other income based on the adjusted value of the investment in the license.



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##### Table of Contents

The effects of the decrease in the value of the license in the statements of financial position at the date
of transition and at December 31, 2009 were Ps. 862,796 and Ps. 735,270, respectively, and represented a decrease in amortization charged to results of operations for the year ended December 31, 2009 of Ps. 127,526.

6. Reclassifications

Loss on sale
and lease back

The loss on sale and lease back recognized for Mexican FRS purposes as a long-term deferred asset as part of the Other
assets caption was recognized, for IFRS purposes, as part of the value of the telephone plant sold and leased back. The effect of this reclassification was a decrease in deferred assets and an increase in fixed assets at January 1, 2009 and at
December 31, 2009 of Ps. 5,706,564 and Ps. 3,503,068, respectively.

Loyalty plans and point reward programs

The commercial policy of certain subsidiaries is to grant loyalty plans and point reward programs to customers who meet certain characteristics. The
Company policy for the recognition of these programs under MFRS was to recognize the amount of such rewards as a promotional expense at the time the customer accumulates a certain number of points, based on the previously established program terms
and current prices.

The liability for loyalty plans and point reward programs at January 1, 2009 and December 31, 2009 of
Ps.745,464 and Ps.1,162,438, respectively, was reclassified from accounts payable and accrued liabilities to deferred revenues, since in accordance with IFRS, these types of plans are considered as a reduction of revenues and not as an operating
cost.

Under IFRS, these amounts have been considered in the measurement of revenues, since they basically represent an effective decrease in
the sale price.

For the year ended December 31, 2009, the effect of this reclassification in the amount of Ps. 461,152 was recognized in
the accompanying statement of income by deducting the amount from the costs and expenses in which it was originally recognized at the time the benefits were granted to the customer, with a corresponding reduction to operating revenues.



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Commissions to authorized distributors for post-paid plans

Commissions for post-paid plans that the Company pays to its authorized distributors for initial activations, as well as variable loyalty commissions and
commissions paid when dealers reach certain volumes of activation are recognized as a commercial expense under Mexican FRS. Under IFRS, such commissions are recognized as a decrease in revenues instead of a commercial expense. The amount of such
reclassifications gave rise to a decrease of Ps.19,853,395 in the caption Commercial, administrative and general expenses for the year ended December 31, 2009. That same amount was deducted from service revenues to present net
revenues as permitted by IFRS.

Other expenses, net

In conformity with IFRS, other expenses and income should be recorded as part of results of operations. For Mexican FRS purposes, this caption was presented separately after operating profit. The net
reclassification in the statement of income for the year ended December 31, 2009 was Ps. 1,909,870.

7. Exceptions and Exemptions in
the Adoption of IFRS

IFRS 1, First-time adoption of International Financial Reporting Standards, currently in force, establishes
certain exceptions and exemptions for first-time adopters regarding the general requirement of retrospectively applying IFRS at the date of transition. IFRS 1 establishes four mandatory exceptions and fourteen optional exemptions for entities to not
retrospectively apply IFRS in the statement of financial position at the date of transition.

América Móvil is applying the
mandatory exceptions with respect to the determination of estimates at the date of transition, the prospective application of the requirements of IAS 27, Consolidated and Separate Financial Statements, applicable to non-controlling interests
as of the date of transition and the prospective application of the derecognition of financial assets and liabilities. The mandatory exception regarding hedge accounting is not applicable to América Móvils derivative financial
instruments.

América Móvil adopted the following optional exemptions:

i) Fair value or revaluation

In conformity with IFRS 1, an entity may elect to measure an
item of property, plant and equipment at the date of transition to IFRS at its fair value and to use that fair value as its deemed cost at that date.



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A first-time adopter may elect to use a revaluation of property, plant and equipment and intangible assets
based on its previous accounting principles at, or before, the date of transition to IFRS as deemed cost at the date of revaluation, if the revaluation was, at the date of the revaluation, broadly comparable to:



| |  | Fair value; or
|- |  | --------------



| |  | Cost or depreciated cost in accordance with IFRS, adjusted to reflect, for example, changes in a general or specific price index.
|- |  | ---------------------------------------------------------------------------------------------------------------------------------

As previously mentioned, América Móvil has decided to use as deemed cost at the date of transition, the
revalued cost of property, plant and equipment determined in conformity with Mexican FRS at December 31, 2008.

ii) Business
combinations

A first-time adopter may elect not to apply IFRS 3, Business Combinations, retrospectively to business combinations in
the past (business combinations that occurred before the date of transition to IFRS).

América Móvil has decided to reflect in
its financial statements business combinations made prior to the date of transition, as they were recognized using the purchase method under Mexican FRS, including step acquisitions.

Acquisitions of non-controlling interests were recognized as equity transactions, since they refer to transactions between entities under common control, as established in Mexican FRS. IFRS permit the use
of this method for the accounting of this type of transactions.

All acquisitions generated after of the transition date (January 1, 2009) are
recognized in conformity with IFRS 3.



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##### Table of Contents

iii) Cumulative effects of translation of foreign entities

Under IAS 21, The Effects of Changes in Foreign Exchange Rates, entities must:



| |  | recognize some translation differences in other comprehensive income and accumulate these in a separate component of equity; and
|- |  | --------------------------------------------------------------------------------------------------------------------------------



| |  | on disposal of a foreign operation, reclassify the cumulative translation difference for that foreign operation (including, if applicable, gains and
losses on related hedges) from equity to profit or loss as part of the gain or loss on disposal.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

However, a first-time
adopter need not comply with this requirement for cumulative translation differences that existed at the date of transition to IFRS. If a first-time adopter uses this exemption:



| |  | the cumulative translation differences for all foreign operations are deemed to be zero at the date of transition to IFRS, and
|- |  | ------------------------------------------------------------------------------------------------------------------------------



| |  | the gain or loss on a subsequent disposal of any foreign operation shall exclude translation differences that arose before the date of transition to
IFRS and shall include later translation differences.
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

América Móvil applied this exemption in its financial
statements at the transition date. Therefore, it reclassified the cumulative translation effect from foreign entities determined in conformity with Mexican FRS to retained earnings in the amount of Ps. 20,817,499. Beginning January 1, 2009, the
Company determined the translation effects in conformity with IAS 21.

8. Derivative Financial Instruments

This difference relates to the credit risk of the counterparties that exists with the various institutions with which the derivative financial instruments
have been acquired and represents the risk that said institutions could default or not on the settlement of the derivative financial instruments. MFRS does not require taking in consideration the credit risk of the counterparties in determination of
fair value of financial instruments.

Associated companies assets and liabilities

Since the associate NET issued its first financial statements under IFRS on December 31, 2009, Telint computes the value of its investment in that
company applying the equity method on the net book value of the assets and liabilities recorded in the associates books, plus the adjustments for equity investments made in prior years. The foregoing is in accordance with the exception
permitted under IFRS 1 for those cases where an entity adopts IFRS for the first time after its associate has adopted IFRS.



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2. Basis of Preparation of the Consolidated Financial Statements and Summary of Significant Accounting
Policies and Practices

a) Basis of preparation

The accompanying financial statements for all the periods presented, have been prepared in conformity with International Financial Reporting Standards (IFRS), as issued by the International Accounting
Standards Board (IASB) (hereafter referred to as IFRS), in force at December 31, 2010, and are the first consolidated financial statements prepared by the Company under IFRS.

The preparation of these financial statements under IFRS requires the use of critical estimates and assumptions that affect the amounts reported for certain assets and liabilities, as well as certain
income and expenses. It also requires that management exercise judgment in the application of the Companys accounting policies.

The
Mexican peso is the currency of presentation of these financial statements.

b) Consolidation and basis of translation of financial
statements of foreign subsidiaries

i) Consolidation and equity method

The consolidated financial statements include the accounts of América Móvil, S.A.B. de C.V. and those of the subsidiaries over which the Company exercises control. The financial statements
for the subsidiaries were prepared for the same period as the holding company, applying consistent accounting policies. All of the companies operate in the telecommunications field or provide services to companies relating to this activity.

All intercompany balances and transactions have been eliminated in the consolidated financial statements. Non-controlling interests refers to
certain subsidiaries in which the Company does not hold 100% of the shares.

The investments in associated companies in which the Company
exercises significant influence are accounted for using the equity method, whereby América Móvil recognizes its share in the net income and equity of the associate.

The results of operations of the subsidiaries and associates were included in the Company's consolidated financial statements beginning as of the month following their acquisition.

Non-controlling interests represent the portion of profits or losses and net assets not held by the Company. Non-controlling interests are presented
separately in the consolidated Statement of Comprehensive Income and in equity in the Consolidated Statement of Financial Position separately from América Móvils own equity.



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Acquisitions of non-controlling interest are recognized as equity transactions (transactions with owners in
their capacity as owners). The carrying amounts of the controlling and non-controlling interests are adjusted to reflect the changes in their relative interests in the subsidiary. Any difference between the amount by which the non-controlling
interests are adjusted and the fair value of the consideration paid are recognized directly in equity and attributed to the owners of the parent.

The equity interest in major subsidiaries and associated companies at December 31, 2009 and 2010 is as follows:



|                                                                        |  |         |                    |  |                                 |  |       |      |  |  |       |  
|----------------------------------------------------------------------- |  | ------- | ------------------ |  | ------------------------------- |  | ----- | ---- |  |  | ----- | -
|                                                                        |  |         |                    |  | Equity interest at December 31, | 
|Company name                                                            |  | Country |                    |  | 2009                            |  |       | 2010 | 
|Subsidiaries:                                                           |  |         |                    |  |                                 |  |       |      |  |  |       |  
|AMX Tenedora, S.A. de C.V.                                              |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|AMOV Canadá, S.A.                                                       |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Compañía Dominicana de Teléfonos, C. por A. (Codetel)                   |  |         | Dominican Republic |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Sercotel, S.A. de C.V.                                                  |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (Telcel)                |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Telecomunicaciones de Puerto Rico, Inc.                                 |  |         | Puerto Rico        |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Puerto Rico Telephone Company, Inc.                                     |  |         | Puerto Rico        |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|PRT Larga Distancia, Inc.                                               |  |         | Puerto Rico        |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras) |  |         | Honduras           |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|AMX USA Holding, S.A. de C.V.                                           |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|TracFone Wireless, Inc. (TracFone)                                      |  |         | United States      |  |                                 |  | 98.2  | %    |  |  | 98.2  | %
|AM Telecom Américas, S.A de C.V.                                        |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Claro Telecom Participacoes, S.A.                                       |  |         | Brazil             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Americel, S.A.                                                          |  |         | Brazil             |  |                                 |  | 99.3  | %    |  |  | 99.4  | %
|Claro S.A. (antes BCP, S.A.)                                            |  |         | Brazil             |  |                                 |  | 99.9  | %    |  |  | 99.9  | %
|América Central Tel, S.A. de C.V. (ACT)                                 |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Telecomunicaciones de Guatemala, S.A. (Telgua)                          |  |         | Guatemala          |  |                                 |  | 99.2  | %    |  |  | 99.3  | %
|Empresa Nicaragüense de Telecomunicaciones, S.A. (Enitel)               |  |         | Nicaragua          |  |                                 |  | 99.5  | %    |  |  | 99.5  | %
|Estesa Holding Corp.                                                    |  |         | Panama             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Cablenet, S.A.                                                          |  |         | Nicaragua          |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Estaciones Terrenas de Satélite, S.A. (Estesa)                          |  |         | Nicaragua          |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|AMX El Salvador, S.A de C.V.                                            |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Compañía de Telecomunicaciones de El Salvador, S.A. de C.V. (CTE)       |  |         | El Salvador        |  |                                 |  | 95.8  | %    |  |  | 95.8  | %
|Cablenet, S.A. (Cablenet)                                               |  |         | Guatemala          |  |                                 |  | 95.8  | %    |  |  | 95.8  | %
|Telecomoda, S.A. de C.V. (Telecomoda)                                   |  |         | El Salvador        |  |                                 |  | 95.8  | %    |  |  | 95.8  | %
|Telecom Publicar Directorios, S.A. de C.V. (Publicom)                   |  |         | El Salvador        |  |                                 |  | 48.8  | %    |  |  | 48.9  | %
|CTE Telecom Personal, S.A. de C.V. (Personal)                           |  |         | El Salvador        |  |                                 |  | 95.8  | %    |  |  | 95.8  | %
|Comunicación Celular, S.A. (Comcel) (1)                                 |  |         | Colombia           |  |                                 |  | 99.4  | %    |  |  | 99.4  | %
|Megacanales, S.A.                                                       |  |         | Colombia           |  |                                 |  | 99.4  | %    |  |  | 99.4  | %
|The Now Operation, S.A.                                                 |  |         | Colombia           |  |                                 |  | 99.4  | %    |  |  | 99.4  | %
|Telmex Colombia, S.A.                                                   |  |         | Colombia           |  |                                 |  | 99.1  | %    |  |  | 99.1  | %
|Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel)             |  |         | Ecuador            |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|AMX Argentina Holdings, S.A.                                            |  |         | Argentina          |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|AMX Argentina, S.A.                                                     |  |         | Argentina          |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|AMX Wellington Gardens, S.A. de C.V.                                    |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|Widcombe, S.A. de C.V.                                                  |  |         | Mexico             |  |                                 |  | 100.0 | %    |  |  | 100.0 | %
|AMX Paraguay, S.A.                                                      |  |         | Paraguay           |  |                                 |  | 100.0 | %    |  |  | 100.0 | %



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|                                                                  |  |               |  |                                 |       |   |      |  |       |  
|----------------------------------------------------------------- |  | ------------- |  | ------------------------------- | ----- | - | ---- |  | ----- | -
|                                                                  |  |               |  | Equity interest at December 31, |      
|Company name                                                      |  | Country       |  | 2009                            |       |   | 2010 | 
|AM Wireless Uruguay, S.A.                                         |  | Uruguay       |  |                                 | 100.0 | % |      |  | 100.0 | %
|Claro Chile, S.A.                                                 |  | Chile         |  |                                 | 100.0 | % |      |  | 100.0 | %
|América Móvil Perú, S.A.C                                         |  | Peru          |  |                                 | 100.0 | % |      |  | 100.0 | %
|Telmex Perú, S.A. (3)                                             |  | Peru          |  |                                 |      |   |      |  | 99.6  | %
|AMX Santa Lucía, Inc.                                             |  | Santa Lucia   |  |                                 | 99.4  | % |      |  | 99.6  | %
|Oceanic Digital Jamaica, Ltd.                                     |  | Jamaica       |  |                                 | 99.4  | % |      |  | 99.6  | %
|Claro Panamá, S.A.                                                |  | Panama        |  |                                 | 99.4  | % |      |  | 99.7  | %
|Carso Global Telecom, S.A.B. de C.V. (3)                          |  | Mexico        |  |                                 |      |   |      |  | 99.9  | %
|Empresas y Controles en Comunicaciones, S.A. de C.V. (3)          |  | Mexico        |  |                                 |      |   |      |  | 99.9  | %
|Teléfonos de México, S.A.B. de C.V. (3)                           |  | Mexico        |  |                                 |      |   |      |  | 59.5  | %
|Telmex Internacional, S.A.B. de C.V. (3)                          |  | Mexico        |  |                                 |      |   |      |  | 96.8  | %
|Controladora de Servicios de Telecomunicaciones, S.A. de C.V. (3) |  | Mexico        |  |                                 |      |   |      |  | 96.8  | %
|Telmex Argentina, S.A. (3)                                        |  | Argentina     |  |                                 |      |   |      |  | 95.6  | %
|Ertach, S.A. (3)                                                  |  | Argentina     |  |                                 |      |   |      |  | 95.6  | %
|Telstar, S.A. (3)                                                 |  | Uruguay       |  |                                 |      |   |      |  | 95.4  | %
|Ecuador Telecom, S.A. (3)                                         |  | Ecuador       |  |                                 |      |   |      |  | 96.8  | %
|Empresa Brasileira de Telecomunicacoes, S.A.  Embratel (3)       |  | Brazil        |  |                                 |      |   |      |  | 94.2  | %
|Páginas Telmex Colombia, S.A. (3)                                 |  | Colombia      |  |                                 |      |   |      |  | 96.8  | %
|Claro 155, S.A. (3)                                               |  | Chile         |  |                                 |      |   |      |  | 96.8  | %
|Claro 110, S.A. (3)                                               |  | Chile         |  |                                 |      |   |      |  | 96.8  | %
|Sección Amarilla USA, LLC. (3)                                    |  | United States |  |                                 |      |   |      |  | 96.8  | %
|Publicidad y Contenido Editorial, S.A. de C.V. (3)                |  | Mexico        |  |                                 |      |   |      |  | 96.8  | %
|Editorial Contenido, S.A. de C.V. (3)                             |  | Mexico        |  |                                 |      |   |      |  | 96.8  | %
|Grupo Telvista, S.A. de C.V. (3)                                  |  | Mexico        |  |                                 |       |   |      |  | 71.5  | %
|                                                                  |  |               | 
|Associated companies:                                             |  |               |  |                                 |       |   |      |  |       |  
|Hildebrando, S.A. de C.V. (3)                                     |  | Mexico        |  |                                 |      |   |      |  | 26.9  | %
|Net Servicios de Comunicacao, S.A. (2) (3)                        |  | Brazil        |  |                                 |      |   |      |  | 84.8  | %



|1. | During 2009 and through December 21, 2010 Comunicación Celular, S.A. was the holder of 100% of the shares of the capital stock of AMX Santa Lucía,
Inc. and 78.2% of the shares of the capital stock of Claro Panamá, S.A.
|-- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|2. | Corresponds to Telints direct and indirect holdings in NET through Embratel and Embratel Participações, S.A. (Embrapar), Embratels holding
company.
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------

|3. | These subsidiaries and associated companies were acquired by means of the public offers described in Note 1 above and thus, the equity percentages are in line with the
percentage acquired. The table above does not reflect the CGT acquisition in 2009.
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

ii) Basis of translation of financial statements of foreign subsidiaries and associated companies

The financial statements of foreign subsidiaries and associated companies jointly represent approximately 57% and 59% of operating
revenues of 2009 and 2010, respectively, and approximately 63%, 67% and 70% of total assets at January 1, 2009 and at December 31, 2009 and 2010, respectively. The financial information of these entities is either consolidated or
recognized using the equity method, as the case may be, after the financial statements have been converted to IFRS in the respective local currency and translated into the reporting currency, in accordance with the following:

The reported financial statements of América Móvils foreign operations were converted to International Financial Reporting Standards
in the local currency and then translated into the reporting currency. Since none of our subsidiaries and associates operate in a hyperinflationary economic environment and the local currency is their functional currency, the translation of their
financial statements prepared under IFRS and denominated in their respective local currencies, was translated as follows:



| |  | all monetary assets and liabilities were translated at the prevailing exchange rate at the period closing;
|- |  | ----------------------------------------------------------------------------------------------------------



| |  | all non-monetary assets and liabilities at the exchange rate in effect at the period closing;
|- |  | ---------------------------------------------------------------------------------------------



| |  | equity accounts are translated at the prevailing exchange rate at the time the capital contributions were made and the profits were generated;
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  | revenues, costs and expenses are translated at the average exchange rate during the applicable period;
|- |  | ------------------------------------------------------------------------------------------------------



| |  | the difference resulting from the translation process is recognized in equity in the caption Effect of translation of foreign entities.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------



| |  | the statements of cash flows were translated using the weighted average exchange rate for the applicable period, and the resulting difference is shown
in the statement of cash flows under the heading Adjustment to cash flow for exchange rate fluctuations.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The
difference resulting from the translation process is recognized in equity in the caption Effect of translation of foreign entities. At December 31, 2009 and 2010, the cumulative translation gain was Ps.22,980,451 and Ps.15,051,665,
respectively.

c) Revenue recognition

Revenues are recognized at the time the related service is rendered, provided that the revenue may be reliably measured, it is probable that the entity will receive the economic benefits associated with
the transaction, the degree of completion of the transaction may be reliably measured and there is high certainty of collectibility.



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Voice services



| |  | Monthly rent in post-paid plans is billed based on the associated plan and package rates, corresponding to when the services are provided. Revenues
billed for services to be rendered are recognized as deferred revenues.
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Revenues from local services are derived from charges for line installations, monthly rent for services and monthly charges for metered services based
on the number of minutes. These revenues depend on the number of lines in service, the number of newly installed lines and volume of minutes.
|- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Revenues for interconnection services, which represent calls from other carriers entering the Companys mobile and fixed line networks (incoming
interconnection services), are recognized at the time the service is provided. Such services are invoiced based on the rates previously agreed with other carriers.
|- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Long-distance revenues originate from airtime or minutes used in making calls in a region or coverage areas outside of the area where the
customers service is activated. These revenues are recognized at the time the service is provided.
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Revenues from roaming charges are related to airtime charged to customers for making or receiving calls when visiting a local service area, country or
region outside the local service area where the customers service is activated. The related revenues are recognized at the time the service is provided based on the rates established and agreed upon by our subsidiaries with other domestic and
international mobile carriers.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Data



| |  | Value added services and other services include voice services and data transmission services (such as two-way and written messages, call information,
ring tones, emergency services, among others). Revenues from such services are recognized at the time they are provided or when the services are downloaded.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Internet services and the sale of point-to-point and point-to-multipoint links are recognized on the date of installation, which is similar to the date
when the respective traffic begins.
|- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | Revenues from corporate networks are obtained mainly from private lines and from providing virtual private network services. These revenues are
recognized at the time the respective traffic begins.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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Pay television

Revenues from pay TV include payments for package deals, pay-per-view and advertising, all of which are recognized at the time the services are provided. Revenue is recognized for programming services
that include a TV channel package, as well as for pay-per-view.

Other related services



| |  | Advertising revenues earned through the publication of the telephone directory are recognized over the life of the directory.
|- |  | -----------------------------------------------------------------------------------------------------------------------------



| |  | Sales of mobile phone equipment and computers, which are mostly made to authorized distributors and the general public, are recognized as revenue at
the time the products are delivered and accepted by the customer, the distributors and general public do not have the right to return the products, and the recovery of the amounts is probable.
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Commissions paid to distributors

Commissions paid to distributors for post-paid plans, whether for activation, loyalty or volume, are presented as a reduction of revenues.

Loyalty and activation volume commissions are accrued monthly based on statistical information regarding customer retention, sales volume and the number
of contracted customers by each distributor. Loyalty commissions are paid to distributors for customers that remain activated for a specified period of time, and sales volume commissions are paid at the time the distributor reaches pre-determined
ranges of activated customers.

Points programs

The points programs are recognized as a reduction to revenues, since they effectively represent a decrease in the price of mobile services and equipment.

d) Cost of mobile equipment and computers

The cost of mobile equipment and computers is recognized at the time the related revenue is recognized. The costs relating to the sale of such equipment
is recognized as cost of sales.



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e) Cost of services

These costs include the cost of call terminations in the networks of other carriers, the costs to link the fixed and mobile networks, payments for long-distance services, rental costs for the use of
infrastructure (links, ports and measured service), as well as message exchanges between carriers. Such costs are recognized at the time the service is received by the fixed or mobile carriers. These costs also include last-mile costs and line
installation costs, which are also recognized at the time the services are received.

f) Cash and cash equivalents

Cash and cash equivalents consist of bank deposits and highly liquid investments with maturities of less than 90 days. These investments are stated at
cost plus accrued interest, which is similar to their market value.

g) Allowance for bad debts

The Company periodically recognizes a provision for doubtful accounts based mainly on its past experience, the aging of its accounts receivable, the
delays in resolving its disputes with other carriers, and the market segments of its customers (governments, businesses and mass market).

Collection policies and procedures vary depending on the credit history of the customer, the credit granted, and the age of the unpaid calls in other
cases.

The evaluation of collection risk of accounts receivables with related parties is performed annually based on an examination of each
related party's financial situation and the markets in which they operate.

h) Inventories

Inventories are initially recognized at historical cost and are valued using the average cost method, without exceeding their net realizable value.

The estimate of the realizable value of inventories on-hand is based on their age and turnover.

i) Business combinations and goodwill

Business combinations are accounted for using the acquisition method.



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Goodwill represents the difference between the purchase price and the fair value of the net assets acquired
at the acquisition date.

Goodwill is reviewed annually to determine its recoverability, or more often if circumstances indicate that the net
book value of the goodwill might be not fully recoverable.

The possible loss of value in goodwill is determined by analyzing the recovery
value of the cash generating unit (or the group thereof) to which the goodwill is associated at the time it originated. If this recovery value is lower than the net book value, an impairment loss is charged to results of operations.

For the years ended December 31, 2009 and 2010, no impairment losses were recognized for the goodwill shown in the Companys statement of
financial position.

j) Property, plant and equipment

Property, plant and equipment are recorded at acquisition cost, net of accumulated depreciation. Depreciation is computed on the deemed cost of the assets using the straight line method, based on the
estimated useful lives of the related assets, beginning the month after they become available for use.

The Company periodically assesses the
residual values, useful lives and depreciation methods associated with its property, plant and equipment. If necessary, the effects of any changes in accounting estimates is recognized prospectively, at the closing of each period, in accordance with
IAS 8, Accounting Policies, Changes in Accounting Estimates and Errors.

Borrowing costs that are incurred for general financing
for construction in progress for periods exceeding 6 months are capitalized as part of the cost of the asset.



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Inventories for the operation of telephone plant are valued using the average cost method, without exceeding
their net realizable value.

The valuation of inventories for the operation of the telephony plant considered obsolete, defective or
slow-moving, are reduced to their estimated net realizable value. The estimate of the recovery value of inventories is based on their age and turnover.

In addition to the purchase price and costs directly attributable to preparing an asset in terms of its physical location and condition for use as intended by management, the cost also includes the
estimated costs for the dismantlement and removal of the asset, and for restoration the site where it is located. For property, plant and equipment made up of several components with different useful lives, the major individual components are
depreciated over their individual useful lives. Maintenance costs and repairs are expensed as incurred.

The net book value of property, plant
and equipment items is removed from the balance sheet at the time the asset is sold or when no future economic benefits are expected from its use or sale. Any gains or losses on the sale of property, plant and equipment represent the difference
between net proceeds of the sale, if any, and the net book value of the item at the time of sale. These gains or losses are recognized as either other operating income or operating expenses upon sale.

Annual depreciation rates are as follows:



|                                                        |  |            
|------------------------------------------------------- |  | -----------
|Telephone plant                                         |  | 3.3% to 33%
|Performance monitoring equipment in the telephone plant |  | 33%        
|Buildings                                               |  | 3%         
|Other assets                                            |  | 10% to 33% 

The carrying value of
property, plant and equipment is reviewed whenever there are indicators of impairment in such assets. Whenever an assets recovery value, which is the greater of the assets selling price and its value in use (the present value of future
cash flows), is less than the assets net carrying value, the difference is recognized as an impairment loss.

For the years ended
December 31, 2009 and 2010, no impairment losses were recognized.

k) Licenses and trademarks

Licenses are recorded at acquisition cost, net of accumulated amortization.



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Licenses to operate wireless telecommunications networks are accounted for at cost or at fair value at
acquisition date. Licenses are amortized using the straight-line method over a period ranging from 5 to 40 years, which represents the usage period of the assets.

Trademarks are recorded at their value in use at the valuation date when acquired, as determined by independent appraisers, and are amortized using the straight-line method over a period ranging from 1 to
10 years.

The value of the Companys intangible assets with defined useful lives is reviewed annually and whenever there are indicators
of impairment in the value of such assets. Whenever an assets recovery value, which is the greater of the assets selling price and its value in use (the present value of future cash flows), is less than the assets net carrying
amount, the difference is recognized as an impairment loss.

For the years ended December 31, 2009 and 2010, no impairment losses were
recognized.

l) Impairment in the value of long-lived assets

The Company has a policy in place for evaluating the existence of indicators of impairment in the carrying value of long-lived fixed assets, including goodwill and intangibles. When there are such
indicators, or in the case of assets whose nature requires an annual impairment analysis, the recovery value of the asset is estimated, which is the greater of its fair value, less any disposal costs, and its value in use. Value in use is determined
by discounting estimated future cash flows, applying a discount rate before taxes that reflects the time value of money and taking into consideration the specific risks associated with the asset. When the recovery value of an asset is below its net
book value, an impairment is considered to exist. In this case, the book value of the asset is reduced to the assets recovery value, recognizing the loss in results of operations for the respective period. Depreciation and/or amortization
expense of future periods is adjusted based on the new book value determined for the asset over the assets remaining useful life. Impairment is computed individually for each asset. Recoverable amount is determined for an individual asset,
unless the asset does not generate cash inflows that are largely independent of those from other assets or group of assets.

In the estimation
of impairments, the Company uses the strategic plans established for the separate cash generating units to which the assets are assigned. Such strategic plans generally cover a period from three to five years. For longer periods, beginning in the
fifth year, projections are used that are based on such strategic plans while applying a constant or decreasing expected growth rate.



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##### Table of Contents

Key assumptions used in value in use calculations

The estimations were performed according to the requirements and methodology required by the IAS 36 for each of the Companys subsidiaries
understanding each subsidiary as a cash generating unit (CGU).

The subsidiaries being analyzed for impairment are cash generating units that
until December 31, 2010 were under the Companys operation.

The forecasts were performed by the Companys management in real
terms (without inflation) and in pesos with acquisition value as of December 31, 2010. The forecasts were made according to the 2011 budget which was approved by the Companys Chief Executive Officer (CEO) and are the same presented to the
Board of Directors.

In the procedure of elaborating the information regarding the financial forecast, premises and assumptions have been
included which any other market participant in similar conditions would consider.

Local synergies have not been taken into consideration that
any other market participant would not have taken to prepare similar forecasted financial information.

The premises used to make the
financial forecasts were validated by the CEO and the Companys Chief Financial Officer for each of the cash generating units, taking into consideration the following:



| |  | Current subscribers and expected growth.
|- |  | ----------------------------------------



| |  | Type of subscribers (Prepaid, Postpaid and fixed line)
|- |  | ------------------------------------------------------



| |  | Market situation and penetration expectations
|- |  | ---------------------------------------------



| |  | New products and services
|- |  | -------------------------



| |  | Migration to the GSM platform
|- |  | -----------------------------



| |  | Economic situation of each country
|- |  | ----------------------------------



| |  | Investments in maintenance of the current assets
|- |  | ------------------------------------------------



| |  | Investments in technology for expanding the current assets (except for Honduras and Paraguay)
|- |  | ---------------------------------------------------------------------------------------------



| |  | Market Consolidation
|- |  | --------------------

The
foregoing forecasts could differ from the results obtained through time; however, in AMX we have made our best estimation according to the current situation of each of the cash generating units.

To determine the discount rate, we use the weighted average cost of capital (WACC) which was determined for each of the cash generating units in real
terms which calculation is described in following paragraphs.



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The estimated discounted rates to perform the IAS 36 impairment test for each CGU consider market
participants assumptions.

The forecasts are in functional currency (millions) without inflation. The book value of the assets, goodwill,
equity, interest-bearing debt and cash are the amounts as of December 31, 2010 under IFRS. The functional currencies for the cash generating units are as follows:



|              |  |  |  |                    
|------------- |  |  |  | -------------------
|CGU           |  |  |  | Functional Currency
|Argentina     |  |  |  | Argentinean Peso   
|Brasil        |  |  |  | Brazilian Real     
|Chile         |  |  |  | Chilean Peso       
|Colombia      |  |  |  | Colombian Peso     
|Dominicana    |  |  |  | Dominican Peso     
|Ecuador       |  |  |  | US Dollar          
|United States |  |  |  | US Dollar          
|Guatemala     |  |  |  | Quetzal            
|Honduras      |  |  |  | Lempira            
|Mexico        |  |  |  | Mexican Peso       
|Nicaragua     |  |  |  | Cordoba            
|Paraguay      |  |  |  | Guarani            
|Peru          |  |  |  | Soles              
|Puerto Rico   |  |  |  | US Dollar          
|Salvador      |  |  |  | US Dollar          
|Uruguay       |  |  |  | Uruguayan Peso     

Weighted average cost of capital (WACC)
and market participants

To determine the discount rate, the Company determined its WACC for each one of the cash generating units (CGU)
based on actual terms. The sources of information utilized for the risk-free rate of return and market rate of return were provided by specialized agencies based on information at the more recent date or the date closest to the financial statement
reporting date.

The estimated discount rates used for the impairment tests conducted pursuant to IAS 36 for each CGU are determined based on
market participant assumptions. Market participants were selected considering their similarity to the Company in terms of their size, operations and business characteristics.

m) Leases

The determination of whether an agreement is, or contains, a lease is based on
the substance of the agreement and requires an evaluation of whether performance of the agreement is dependent on the use of a specific asset and whether the agreement transfers the right of use of the asset to the Company.



| |  | Operating leases
|- |  | ----------------



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##### Table of Contents

Leases under which the lessor retains a significant portion of the risks and benefits inherent to the
ownership of the leased asset are considered operating leases. Payments made under operating lease agreements are charged to results of operations on a straight-line basis over the rental period.



| |  | Finance leases
|- |  | --------------

Lease agreements that transfer substantially all the risks and benefits of ownership of the leased assets are accounted for as finance leases.
Accordingly, upon commencement of the lease, the asset, which is classified based on its nature, and associated debt are recorded at the lower of the fair value of the leased asset or the present value of the lease payments. Finance lease payments
are apportioned between the reduction of lease liability and the finance cost so that a constant interest rate is determined on the outstanding liability balance. Finance costs are charged to results of operations over the life of the agreement.

n) Financial assets and liabilities

Financial assets and liabilities within the scope of IAS 39 generally include investments in financial instruments, debt and equity instruments, accounts receivable and other accounts receivable, loans
and financing, accounts payable and accrued liabilities and derivative financial instruments.

Financial assets and liabilities are initially
recognized at fair value, plus directly attributable transactions costs, except for those designated upon initial recognition at fair value through profit or loss.

The subsequent measurement of financial assets and liabilities depends on how they are classified as either financial assets and liabilities measured at fair value, financial assets and liabilities held
to maturity and available for sale, loans and accounts receivable.

The financial assets of América Móvil include cash and cash
equivalents, trade accounts receivable and other accounts receivable, listed and unlisted financial instruments and derivative financial instruments.

Financial liabilities are classified into the following categories based on the nature of the financial instruments contracted or issued: financial liabilities measured at fair value and financial
liabilities measured at their amortized cost.

The Companys financial liabilities include accounts payable to suppliers, deferred
revenues, other accounts payable, loans and derivative financial instruments. Derivative financial instruments are measured at fair value and short- and long-term debt, as well as accounts payable, are accounted for as financial liabilities measured
at their amortized



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##### Table of Contents

cost.

Offsetting of financial instruments

Financial assets and financial liabilities are offset and the net amount is presented in the consolidated statement of financial position if, and only if
(i) there is currently a legally enforceable right to compensate the recognized amounts, and (ii) there is the intention to either settle them on a net basis, or to realize the assets and settle the liabilities simultaneously.

Fair value of financial instruments

At
each financial statement reporting date, the fair value of financial instruments traded in active markets is determined based on market prices, or prices quoted by brokers (purchase price for asset positions and sales price for liability positions),
without any deduction for transaction costs.



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##### Table of Contents

For financial instruments that are not traded in an active market, the fair value is determined using
appropriate valuation techniques. Such techniques may include using recent arms length market transactions, references to the current fair value of another financial instrument that is substantially similar, a discounted cash flow analysis or
other valuation models.

Fair values are determined based on the following hierarchy:

Level 1. Quoted prices (unadjusted) in active markets for identical assets or liabilities;

Level 2. Variables other than quoted prices in Level 1 that are observable for the asset or liability, either directly (prices) or indirectly (derived from prices) and;

Level 3. Variables used for the asset or liability that are not based on any observable market data (non-observable variables).

Note 14 provides an analysis of the fair values of the Companys financial instruments.

o) Transactions in foreign currency

Transactions in foreign currency are recorded at the
prevailing exchange rate at the time of the related transactions. Foreign currency denominated assets and liabilities are translated at the prevailing exchange rate at the financial statement reporting date. Exchange differences determined from the
transaction date to the time foreign currency denominated assets and liabilities are settled or translated at the financial statement reporting date are charged or credited to the results of operations.

p) Accounts payable, accrued liabilities and provisions

Liabilities are recognized whenever (i) the Company has current obligations (legal or assumed) resulting from a past event, (ii) when it is probable the obligation will give rise to a future
cash disbursement for its settlement and (iii) the amount of the obligation can be reasonably estimated.

When the effect of the time
value of money is significant, the amount of the liability is determined as the present value of the expected disbursements to settle the obligation. The discount rate is determined on a pre-tax basis and reflects current market conditions at the
financial statement reporting date and, where appropriate, the risks specific to the liability. Where discounting is used, an increase in the liability is recognized as finance expense.

Contingent liabilities are recognized only when it is probable they will give rise to a future cash disbursement for their settlement. Also, contingencies are only recognized when they will generate a
loss.



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q) Employee benefits

There are defined benefit pension plans in place in the subsidiaries Radiomóvil Dipsa, S.A. de C.V., Telecomunicaciones de Puerto Rico, S.A., Teléfonos de México and Embratel.
Embratel, also has medical plans and defined contribution plans. These plans require the valuation and recognition of the accumulated effects of retirement and post-retirement labor obligations through actuarial computations using the projected unit
credit method.

The subsidiary Consorcio Ecuatoriano de Telecomunicaciones, S.A. has a pension plan based on individual capitalization under
which the company purchases a deferred annuity from an insurance company for which the company pays only an annual premium. Under IFRS, this plan is classified as a defined benefit plan, therefore, only the net cost of the plan for the period must
be disclosed.

The Mexican subsidiaries have the obligation to pay seniority premiums to personnel based on Federal labor law, which also
establishes the obligation to make certain payments to personnel who cease to provide services under certain circumstances.

The Company
recognizes the cost for pension benefits, seniority premiums and termination benefits on an annual basis based on independent actuarial computations applying the projected unit-credit method, using financial assumptions net of inflation. The latest
actuarial computation was prepared as of December 31, 2010.

For the rest of the Companys subsidiaries, there are no defined
benefit plans or compulsory defined contribution structures. However, the foreign subsidiaries make contributions to national pension, social security and severance plans in accordance with the percentages and rates established by the applicable
payroll and labor laws of each country.

Such contributions are made to the entities designated by the state and are recorded as direct labor
benefits in the results of operations as they are incurred.

The actuarial (losses) gains are amortized based on the estimated average
remaining working lifetime of employees of the respective subsidiary; such periods range between 11 and 20 years.

The Company recognizes a
provision for the costs of paid absences, such as vacation time, based on the accrual method.

r) Employee profit sharing

Current year employee profit sharing is presented as an operating expense in the statement of income.



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s) Income taxes

Current income tax is presented as a short-term liability, net of prepayments made during the year.

Deferred income tax is determined using the liability method based on the temporary differences between the tax values of the assets and liabilities and their book values at the financial statement
reporting date.

Deferred tax assets and liabilities are measured using the tax rates that are expected to be in effect in the period when the
asset will materialize or the liability will be settled, based on the enacted tax rates (and tax legislation) that have been enacted or substantially enacted at the financial statement reporting date. The value of deferred tax assets is reviewed at
each financial statement reporting date and is reduced to the extent that it is more likely than not that the Company will not have sufficient future tax profits to allow for the realization of all or a part of its deferred tax assets. Unrecognized
deferred tax assets are revalued at each financial statement reporting date and are recognized when it is more likely than not that there will be sufficient future tax profits to allow for the realization of these assets.

Deferred taxes relating to items recognized outside profit or loss are also recognized outside of profit and loss. These deferred taxes are recognized
together with the underlying transaction, either in other comprehensive income or directly in equity.

t) Advertising

Advertising expenses are expensed as incurred. For the years ended December 31, 2009 and 2010, advertising expenses were Ps. 12,311,499 and Ps.
14,619,745, respectively.

u) Earnings per share

Basic and diluted earnings per share is determined by dividing net income of the year by the weighted-average number of shares outstanding during the year (common control component of the shares are
reflected for all periods presented). In determining the weighted average number of shares issued and outstanding, shares repurchased by the Company have been excluded.



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v) Concentration of risk

The main financial instruments used by the Company for financing purposes are bank loans, domestic senior notes, lines of credit, fixed and floating-rate notes, loan facilities, bonds, derivative
financial instruments, leases and accounts payable. The Company holds several financial assets, such as cash and cash equivalents, accounts receivable, prepaid expenses and short-term deposits that come directly from its operations.

The main risks associated with the Companys financial instruments are cash flow risk, liquidity risk, market risk and credit risk. The Company uses
sensitivity analyses to measure the potential losses based on a theoretical increase of 100 basis points in interest rates and a 10% fluctuation in exchange rates. The Board of Directors approves the policies submitted by management to mitigate
these risks.

Credit risk represents the loss that could be recognized in case the counterparties fail to fully comply with the contractual
obligations. The Company is also exposed to market risks related to changes in interest rates and fluctuations in exchange rates. To reduce the risks related to changes in interest rates and fluctuations in exchange rates, the Company uses
derivative financial instruments.

The financial instruments that potentially represent concentrations of credit risk are cash and short-term
deposits, trade accounts receivable and financial instruments related to debt and derivatives. The Companys policy is designed in order to not limit its exposure to any one financial institution; therefore, the Companys financial
instruments are contracted with several different financial institutions located in different geographic regions.

The credit risk in accounts
receivable is diversified because the Company has a broad customer base that is geographically dispersed. The Company continuously evaluates the credit conditions of its customers and does not require collateral to guarantee collection of its
accounts receivable. In the event that the Companys collection cycle deteriorates significantly, its results of operations could be adversely affected.

A portion of the Companys cash surplus is invested in term deposits with financial institutions with high credit scores.



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Sensitivity analysis



|a) | Exchange rate fluctuations
|-- | --------------------------

Should the
Companys debt at December 31, 2010 of Ps. 274,430,242 suffer a 10% increase in exchange rates, the debt would increase by Ps. 10,617,600 (resulting in total debt of Ps.285,047,842), while the Companys net interest expense would
increase by Ps. 850,110 as a consequence of the base for interest being higher in Mexican pesos.



|b) | Interest rates
|-- | --------------

In the event that the
Companys agreed-upon interest rates at December 31, 2010 increased by 100 basis points, the increase in net interest expense would be Ps. 100,110.

The Company depends on several key suppliers and sellers. During the fiscal periods 2009 and 2010, approximately 66% and 67%, respectively, of the total cost of the cellular equipment of América
Móvil represent purchases made from three suppliers, and approximately 39% and 45%, respectively, of the telephony plant equipment was purchased from two suppliers. If any of these suppliers were to cease to provide equipment and services to
the Company, or to provide them in a timely manner and at a reasonable cost, the Companys business and results of operations might be adversely affected.

w) Derivative financial instruments

The Company is exposed to interest rate and foreign
currency risks, which it tries to mitigate through a controlled risk management program that includes the use of derivative financial instruments. The Company principally uses cross-currency swaps and, if necessary, foreign currency forwards to
offset the short-term risk of exchange rate fluctuations. For purposes of reducing the risks from changes in interest rates, the Company utilizes interest rate swaps through which it pays or receives the net amount resulting from paying or receiving
a fixed rate, and from receiving or paying cash based on a variable rate, on notional amounts denominated mainly in Mexican pesos, U.S. dollars, Japanese yen, Swiss francs and Euros. At December 2009 and 2010, some of the Companys derivative
financial instruments have been designated, and have qualified, as cash flow hedges.

The policy of the Company in this regard comprises:
(i) the formal documentation of all transactions between the hedging instruments and hedged positions, (ii) risk management objectives, and (iii) the strategy for executing hedging transactions. This documentation also includes the
relationship between the cash flows of the derivatives with those of the Companys assets and liabilities recognized in the statement of financial position.



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The effectiveness of the Company's derivatives is evaluated prior to their designation as hedges, as well as
during the hedging period, which is performed at least quarterly based on recognized statistical techniques. Whenever it is determined that a derivative is not highly effective as a hedge or that the derivative ceases to be a highly effective hedge,
the Company ceases to apply hedge accounting for the derivative on a prospective basis. For the years ended December 31, 2009 and 2010, there were no gains or losses due to changes in the accounting treatment of hedges.

Derivative financial instruments are recognized in the statement of financial position at fair value, which is obtained from the financial institutions
with which the agreements are entered into, and it is the Companys policy to compare such fair value to the valuation provided by an independent pricing provider retained by the Company. The effective portion of gains or losses on these
derivatives is recognized in equity under the heading Effect for fair value of derivatives, and the ineffective portion is charged to results of operations of the period. Changes in the fair value of derivatives that do not qualify as
hedging instruments are recognized immediately in results of operations.

The change in fair value recognized in results of operations
corresponding to derivatives that qualify as hedges is presented in the same caption of the statement of income as the gain or loss of the hedged item.

x) Presentation of statement of income

The costs and expenses shown in América
Móvils statement of income are presented in combined manner (based on both their function and nature), which allows a better understanding of the components of the Companys operating income. This classification allows for a
comparison to the telecommunications industry.

The Companys presents operating income in its statement of income, since it is a key
indicator of the Companys performance. Operating income includes operating revenues, operating costs and expenses.

y) Operating
segments

Segment information is presented based on information used by management in its decision-making processes. Segment information is
presented based on the geographic areas in which the Company operates.

The management of América Móvil is responsible for
making decisions regarding the resources to be allocated to the Companys different segments, as well as evaluate the performance of each segment.



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z) Convenience translation

At December 31, 2010, amounts in U.S. dollars have been included in the financial statements solely for the convenience of the reader and have been translated to Mexican pesos at December 31,
2010 at an exchange rate of Ps. 12.36 pesos per U.S. dollar, which was the exchange rate at that date. Such translation should not be construed as a representation that the Mexican peso can be converted to U.S. dollars at the exchange rate in effect
on December 31, 2010 or any other exchange rate.

3. Standards issued but not yet effective

New standards issued but not yet effective up to the date of issuance of the Companys financial statements are listed below. This listing is of
standards and interpretations issued, which the Company reasonably expects to be applicable at a future date. The Company intends to adopt those standards when they become effective.

IAS 24 Related Party Disclosures (Amendment)

The amended standard is effective for annual
periods beginning on or after January 1, 2011. It clarified the definition of a related party to simplify the identification of such relationships and to eliminate inconsistencies in its application. The revised standard introduces a partial
exemption of disclosure requirements for government related entities. The Company does not expect any impact on its financial position or performance. Early adoption is permitted for either the partial exemption for government-related entities or
for the entire standard.

IAS 32 Financial Instruments: Presentation  Classification of Rights Issues (Amendment)

The amendment to IAS 32 is effective for annual periods beginning on or after February 1, 2010 and amended the definition of a financial liability in
order to classify rights issues (and certain options or warrants) as equity instruments in cases where such rights are given pro rata to all of the existing owners of the same class of an entitys non-derivative equity instruments, or to
acquire a fixed number of the entitys own equity instruments for a fixed amount in any currency. The Company estimates this amendment will have no impact on its financial position or performance.

IFRS 9 Financial Instruments: Classification and Measurement

IFRS 9 as issued reflects the first phase of the IASBs work on the replacement of IAS 39 and applies to classification and measurement of financial assets as defined in IAS 39. The standard is effective
for annual periods beginning on or after January 1, 2013. In subsequent phases, the IASB will address classification and measurement of financial liabilities, hedge accounting and derecognition. The adoption of the first phase of IFRS 9 will
have an effect on the classification and measurement of the Companys financial assets. The Company will quantify the effect in conjunction with the other phases, when issued, to present a comprehensive picture.



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IFRIC 14 Prepayments of a minimum funding requirement (Amendment)

The amendment to IFRIC 14 is effective for annual periods beginning on or after January 1, 2011 with retrospective application. The amendment
provides guidance on assessing the recoverable amount of a net pension asset. The amendment permits an entity to treat the prepayment of a minimum funding requirement as an asset. The amendment is deemed to have no impact on the financial statements
of the Company.

IFRIC 19 Extinguishing Financial Liabilities with Equity Instruments

IFRIC 19 is effective for annual periods beginning on or after July 1, 2010. The interpretation clarifies that equity instruments issued to a
creditor to extinguish a financial liability qualify as consideration paid. The equity instruments issued are measured at their fair value. In case that this cannot be reliably measured, the instruments are measured at the fair value of the
liability extinguished. Any gain or loss is recognized immediately in profit or loss. The Company estimates this interpretation will have no impact on its financial position or performance.

Improvements to IFRSs (issued in May 2010)

The IASB issued Improvements to IFRSs, an
omnibus of amendments to its IFRS standards. The amendments have not been adopted as they become effective for annual periods on or after either July 1, 2010 or January 1, 2011. The amendments listed below, are considered to have a
reasonable possible impact on the Company:



| |  | IFRS 3 Business Combinations
|- |  | ----------------------------



| |  | IFRS 7 Financial Instruments: Disclosures
|- |  | -----------------------------------------



| |  | IAS 1 Presentation of Financial Statements
|- |  | ------------------------------------------



| |  | IAS 27 Consolidated and Separate Financial Statements
|- |  | -----------------------------------------------------



| |  | IFRIC 13 Customer Loyalty Programmes
|- |  | ------------------------------------

The Company is currently evaluating the effect on its financial statements and notes thereto of the adoption of these standards and interpretations.



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4. Cash and Cash Equivalents



|                    |  |               |            |  |                 |  |               |      |  |     |            | 
|------------------- |  | ------------- | ---------- |  | --------------- |  | ------------- | ---- |  | --- | ---------- | 
|                    |  | At January 1, |            |  | At December 31, | 
|                    |  | 2009          |            |  | 2009            |  |               | 2010 | 
|Cash in banks       |  | Ps.           | 14,678,585 |  |                 |  | Ps. 9,405,118 |      |  | Ps. | 17,765,427 | 
|Short-term deposits |  |               | 21,607,111 |  |                 |  | 50,361,415    |      |  |     | 78,173,038 | 
|                    |  |               |            |  |                 |  |               |      |  |     |            | 
|                    |  | Ps.           | 36,285,696 |  |                 |  | Ps.59,766,533 |      |  | Ps. | 95,938,465 | 
|                    |  |               |            |  |                 |  |               |      |  |     |            | 

5. Accounts Receivable, net

a) An analysis of accounts receivable at January 1, 2009 and at December 31, 2009 and 2010 is as follows:



|                                                                                                                        |  |               |             |   |                 |     |             |      |  |     |             |  
|----------------------------------------------------------------------------------------------------------------------- |  | ------------- | ----------- | - | --------------- | --- | ----------- | ---- |  | --- | ----------- | -
|                                                                                                                        |  | At January 1, |             |   | At December 31, |    
|                                                                                                                        |  | 2009          |             |   | 2009            |     |             | 2010 | 
|Subscribers and distributors                                                                                            |  | Ps.           | 71,856,720  |   |                 | Ps. | 80,570,351  |      |  | Ps. | 80,131,506  |  
|Mobile phone carriers for network interconnection and other services including el que llama paga (calling
party pays) |  |               | 10,864,669  |   |                 |     | 11,733,858  |      |  |     | 11,920,896  |  
|Recoverable taxes                                                                                                       |  |               | 16,408,694  |   |                 |     | 10,786,190  |      |  |     | 12,291,883  |  
|Sundry debtors                                                                                                          |  |               | 6,376,448   |   |                 |     | 6,928,958   |      |  |     | 7,822,509   |  
|                                                                                                                        |  |               |             |   |                 |     |             |      |  |     |             |  
|                                                                                                                        |  |               | 105,506,531 |   |                 |     | 110,019,357 |      |  |     | 112,166,794 |  
|Less: Allowance for bad debts due from customers, distributors and mobile phone carriers                                |  |               | (12,513,427 | ) |                 |     | (16,516,604 | )    |  |     | (19,002,607 | )
|                                                                                                                        |  |               |             |   |                 |     |             |      |  |     |             |  
|Net                                                                                                                     |  | Ps.           | 92,993,104  |   |                 | Ps. | 93,502,753  |      |  | Ps. | 93,164,187  |  
|                                                                                                                        |  |               |             |   |                 |     |             |      |  |     |             |  

b) Changes in the allowance for doubtful accounts during the years ended December 31, 2009 and 2010 were as follows:



|                                        |  |                 |             |   |      |     |             |  
|--------------------------------------- |  | --------------- | ----------- | - | ---- | --- | ----------- | -
|                                        |  | At December 31, |            
|                                        |  | 2009            |             |   | 2010 |    
|Balance at beginning of period          |  | Ps.             | (12,513,427 | ) |      | Ps. | (16,516,604 | )
|Increases recorded in expenses          |  |                 | (11,813,733 | ) |      |     | (8,777,914  | )
|Charges against the allowance provision |  |                 | 9,609,485   |   |      |     | 5,903,396   |  
|Translation effect                      |  |                 | (1,798,929  | ) |      |     | 388,515     |  
|                                        |  |                 |             |   |      |     |             |  
|Balance at end of period                |  | Ps.             | (16,516,604 | ) |      | Ps. | (19,002,607 | )
|                                        |  |                 |             |   |      |     |             |  



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c) The following table shows a breakdown of accounts receivable based on their age at December 31, 2009
and 2010, for subscribers and distributors:



|                     |  |       |            |  |                                            |     |            |            |  |     |            |  |  |            |           |  |         |     |           |  |  |     |            | 
|-------------------- |  | ----- | ---------- |  | ------------------------------------------ | --- | ---------- | ---------- |  | --- | ---------- |  |  | ---------- | --------- |  | ------- | --- | --------- |  |  | --- | ---------- | 
|                     |  | Total |            |  | Unbilled servicesprovided about tocome due |     |            | 1- 30 days |  |     | 30-60 days |  |  | 61-90 days |           |  | 90 days |    
|At January 1, 2009   |  | Ps.   | 71,856,720 |  |                                            | Ps. | 40,451,868 |            |  | Ps. | 13,351,177 |  |  | Ps.        | 3,709,049 |  |         | Ps. | 2,149,459 |  |  | Ps. | 12,195,167 | 
|At December 31, 2009 |  |       | 80,570,351 |  |                                            |     | 44,014,817 |            |  |     | 13,170,849 |  |  |            | 4,507,308 |  |         |     | 2,529,392 |  |  |     | 16,347,985 | 
|At December 31, 2010 |  |       | 80,131,506 |  |                                            |     | 41,798,709 |            |  |     | 14,975,196 |  |  |            | 3,388,262 |  |         |     | 2,289,979 |  |  |     | 17,679,360 | 

6. Inventories, net

An analysis of inventories at January 1, 2009 and at December 31, 2009 and 2010 is as follows:



|                                                       |  |               |            |   |                 |     |            |      |  |     |            |  
|------------------------------------------------------ |  | ------------- | ---------- | - | --------------- | --- | ---------- | ---- |  | --- | ---------- | -
|                                                       |  | At January 1, |            |   | At December 31, |    
|                                                       |  | 2009          |            |   | 2009            |     |            | 2010 | 
|Mobile phones, accessories, cards and other materials  |  | Ps.           | 36,926,278 |   |                 | Ps. | 25,414,655 |      |  | Ps. | 27,785,743 |  
|Less: Reserve for obsolete and slow-moving inventories |  |               | (1,229,905 | ) |                 |     | (1,659,130 | )    |  |     | (1,704,213 | )
|                                                       |  |               |            |   |                 |     |            |      |  |     |            |  
|Total                                                  |  | Ps.           | 35,696,373 |   |                 | Ps. | 23,755,525 |      |  | Ps. | 26,081,530 |  
|                                                       |  |               |            |   |                 |     |            |      |  |     |            |  

7. Other assets, net

a) An analysis of other assets at January 1, 2009 and at December 31, 2009 and 2010 is as follows:



|                                                                         |  |               |              |  |                 |  |              |      |  |  |               | 
|------------------------------------------------------------------------ |  | ------------- | ------------ |  | --------------- |  | ------------ | ---- |  |  | ------------- | 
|                                                                         |  | At January 1, |              |  | At December 31, | 
|                                                                         |  | 2009          |              |  | 2009            |  |              | 2010 | 
|Current portion:                                                         |  |               |              |  |                 |  |              |      |  |  |               | 
|Advances to suppliers (including advertising, insurance and maintenance) |  |               | Ps.7,736,880 |  |                 |  | Ps.7,953,492 |      |  |  | Ps. 9,047,540 | 
|Other                                                                    |  |               | 249,689      |  |                 |  | 444,350      |      |  |  | 587,893       | 
|                                                                         |  |               |              |  |                 |  |              |      |  |  |               | 
|                                                                         |  |               | Ps.7,986,569 |  |                 |  | Ps.8,397,842 |      |  |  | Ps. 9,635,433 | 
|                                                                         |  |               |              |  |                 |  |              |      |  |  |               | 
|Non-current portion:                                                     |  |               |              |  |                 |  |              |      |  |  |               | 
|Recoverable taxes                                                        |  |               | Ps.1,082,370 |  |                 |  | Ps.1,982,292 |      |  |  | Ps. 3,773,686 | 
|Advance payments for the use of fiber optics                             |  |               | 748,701      |  |                 |  | 883,102      |      |  |  | 1,247,565     | 
|Prepaid expenses                                                         |  |               | 4,198,177    |  |                 |  | 5,195,052    |      |  |  | 6,570,627     | 
|                                                                         |  |               |              |  |                 |  |              |      |  |  |               | 
|Total                                                                    |  |               | Ps.6,029,248 |  |                 |  | Ps.8,060,446 |      |  |  | Ps.11,591,878 | 
|                                                                         |  |               |              |  |                 |  |              |      |  |  |               | 

For the years ended December 31, 2009 and 2010, the amortization expense for other assets was Ps. 200,570 and Ps.
314,652, respectively.



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8. Property, Plant and Equipment, net



|                                                            |  |               |             |  |                 |     |             |      |  |     |             |  
|----------------------------------------------------------- |  | ------------- | ----------- |  | --------------- | --- | ----------- | ---- |  | --- | ----------- | -
|                                                            |  | At January 1, |             |  | At December 31, |    
|                                                            |  | 2009          |             |  | 2009            |     |             | 2010 | 
|Telephone plant and equipment                               |  | Ps.           | 270,613,218 |  |                 | Ps. | 346,777,412 |      |  | Ps. | 336,923,824 |  
|Land and buildings                                          |  |               | 39,583,321  |  |                 |     | 43,018,123  |      |  |     | 44,187,818  |  
|Other assets                                                |  |               | 33,483,863  |  |                 |     | 52,666,762  |      |  |     | 51,312,793  |  
|                                                            |  |               |             |  |                 |     |             |      |  |     |             |  
|                                                            |  |               | 343,680,402 |  |                 |     | 442,462,297 |      |  |     | 432,424,435 |  
|Less: Accumulated depreciation                              |  |               |             |  |                 |     | (66,953,347 | )    |  |     | (73,712,544 | )
|                                                            |  |               |             |  |                 |     |             |      |  |     |             |  
|Net                                                         |  |               | 343,680,402 |  |                 |     | 375,508,950 |      |  |     | 358,711,891 |  
|Construction in process and advances to equipment suppliers |  |               | 36,782,499  |  |                 |     | 34,678,740  |      |  |     | 41,082,331  |  
|Inventories for operation of the telephone plant            |  |               | 10,064,856  |  |                 |     | 8,544,942   |      |  |     | 12,026,165  |  
|                                                            |  |               |             |  |                 |     |             |      |  |     |             |  
|Total                                                       |  | Ps.           | 390,527,757 |  |                 | Ps. | 418,732,632 |      |  | Ps. | 411,820,387 |  
|                                                            |  |               |             |  |                 |     |             |      |  |     |             |  



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a) An analysis of Property, plant and equipment, net at January 1, 2009 and at December 31, 2009
and 2010 is as follows:



|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|------------------------- |  | ----------------------------- | ----------- | - | ------------------ | --- | ---------- | ------------ |  | --- | ---------------------------------------------------------------- | - |  | ------------------------------------------------ | ----------- | - | ----- | --- | ----------- | - |  | --- | ------------ | -
|Cost                      |  | Telephone plant 
andequipment |             |   | Land and buildings |     |            | Other assets |  |     | Construction in 
processand advances totelephone plant suppliers |   |  | Inventories for 
operationof the telephone plant |             |   | Total |    
|At January 1, 2009        |  | Ps.                           | 270,613,218 |   |                    | Ps. | 39,583,321 |              |  | Ps. | 33,483,863                                                       |   |  | Ps.                                              | 36,782,499  |   |       | Ps. | 10,064,856  |   |  | Ps. | 390,527,757  |  
|Additions                 |  |                               | 74,959,087  |   |                    |     | 2,853,991  |              |  |     | 15,714,566                                                       |   |  |                                                  | 39,677,448  |   |       |     | 10,885,462  |   |  |     | 144,090,554  |  
|Retirements               |  |                               | (23,178,763 | ) |                    |     | (590,465   | )            |  |     | (2,765,727                                                       | ) |  |                                                  | (46,402,477 | ) |       |     | (12,711,215 | ) |  |     | (85,648,647  | )
|Effect of translation     |  |                               | 24,383,870  |   |                    |     | 1,171,276  |              |  |     | 6,234,060                                                        |   |  |                                                  | 4,621,270   |   |       |     | 305,839     |   |  |     | 36,716,315   |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At December 31, 2009      |  |                               | 346,777,412 |   |                    |     | 43,018,123 |              |  |     | 52,666,762                                                       |   |  |                                                  | 34,678,740  |   |       |     | 8,544,942   |   |  |     | 485,685,979  |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|Additions                 |  |                               | 69,658,347  |   |                    |     | 5,563,225  |              |  |     | 17,013,627                                                       |   |  |                                                  | 49,295,626  |   |       |     | 16,090,226  |   |  |     | 157,621,051  |  
|Retirements and transfers |  |                               | (70,803,070 | ) |                    |     | (3,994,709 | )            |  |     | (15,292,206                                                      | ) |  |                                                  | (41,672,926 | ) |       |     | (12,408,095 | ) |  |     | (144,171,006 | )
|Effect of translation     |  |                               | (8,708,865  | ) |                    |     | (398,821   | )            |  |     | (3,075,390                                                       | ) |  |                                                  | (1,219,109  | ) |       |     | (200,908    | ) |  |     | (13,603,093  | )
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At December 31, 2010      |  | Ps.                           | 336,923,824 |   |                    | Ps. | 44,187,818 |              |  | Ps. | 51,312,793                                                       |   |  | Ps.                                              | 41,082,331  |   |       | Ps. | 12,026,165  |   |  | Ps. | 485,532,931  |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|Depreciation              |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At January 1, 2009        |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|Depreciation of the year  |  | Ps.                           | 55,817,970  |   |                    | Ps. | 2,486,281  |              |  | Ps. | 13,642,873                                                       |   |  |                                                  |             |   |       | Ps. | 3,122       |   |  | Ps. | 71,950,246   |  
|Retirements               |  |                               | (9,528,934  | ) |                    |     | (974,357   | )            |  |     | (7,178,373                                                       | ) |  |                                                  |             |   |       |     | (18,840     | ) |  |     | (17,700,504  | )
|Effect of translation     |  |                               | 9,952,735   |   |                    |     | (108,442   | )            |  |     | 2,866,213                                                        |   |  |                                                  |             |   |       |     | (6,901      | ) |  |     | 12,703,605   |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At December 31, 2009      |  |                               | 56,241,771  |   |                    |     | 1,403,482  |              |  |     | 9,330,713                                                        |   |  |                                                  |             |   |       |     | (22,619     | ) |  |     | 66,953,347   |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|Depreciation of the year  |  |                               | 63,414,234  |   |                    |     | 2,933,314  |              |  |     | 13,913,627                                                       |   |  |                                                  |             |   |       |     | 33,515      |   |  |     | 80,294,690   |  
|Retirements               |  |                               | (55,238,068 | ) |                    |     | (3,809,266 | )            |  |     | (8,930,180                                                       | ) |  |                                                  |             |   |       |     | (22,509     | ) |  |     | (68,000,023  | )
|Effect of translation     |  |                               | (5,592,649  | ) |                    |     | (350,241   | )            |  |     | 413,696                                                          |   |  |                                                  |             |   |       |     | (6,276      | ) |  |     | (5,535,470   | )
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At December 31, 2010      |  | Ps.                           | 58,825,288  |   |                    | Ps. | 177,289    |              |  | Ps. | 14,727,856                                                       |   |  |                                                  |             |   |       | Ps. | (17,889     | ) |  | Ps. | 73,712,544   |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|Book value                |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At January 1, 2009        |  | Ps.                           | 270,613,218 |   |                    | Ps. | 39,583,321 |              |  | Ps. | 33,483,863                                                       |   |  | Ps.                                              | 36,782,499  |   |       | Ps. | 10,064,856  |   |  | Ps. | 390,527,757  |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At December 31, 2009      |  | Ps.                           | 290,535,641 |   |                    | Ps. | 41,614,641 |              |  | Ps. | 43,336,049                                                       |   |  | Ps.                                              | 34,678,740  |   |       | Ps. | 8,567,561   |   |  | Ps. | 418,732,632  |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  
|At December 31, 2010      |  | Ps.                           | 278,098,536 |   |                    | Ps. | 44,010,529 |              |  | Ps. | 36,584,937                                                       |   |  | Ps.                                              | 41,082,331  |   |       | Ps. | 12,044,054  |   |  | Ps. | 411,820,387  |  
|                          |  |                               |             |   |                    |     |            |              |  |     |                                                                  |   |  |                                                  |             |   |       |     |             |   |  |     |              |  



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b) At January 1, 2009 and at December 31, 2009 and 2010, property, plant and equipment includes
the following assets under capital leases:



|                            |  |               |            |   |                 |     |            |      |  |     |            |  
|--------------------------- |  | ------------- | ---------- | - | --------------- | --- | ---------- | ---- |  | --- | ---------- | -
|                            |  | At January 1, |            |   | At December 31, |    
|                            |  | 2009          |            |   | 2009            |     |            | 2010 | 
|Assets under capital leases |  | Ps.           | 3,615,876  |   |                 | Ps. | 2,898,100  |      |  | Ps. | 2,902,679  |  
|Accumulated depreciation    |  |               | (1,254,925 | ) |                 |     | (1,321,899 | )    |  |     | (1,160,237 | )
|                            |  |               |            |   |                 |     |            |      |  |     |            |  
|                            |  | Ps.           | 2,360,951  |   |                 | Ps. | 1,576,201  |      |  | Ps. | 1,742,442  |  
|                            |  |               |            |   |                 |     |            |      |  |     |            |  

c) In view of the major advances and changes in telecommunications equipment technology, the Company periodically
reevaluates the estimated useful lives of its telephone plant and adjusts the remaining useful lives. In 2009, the Brazilian subsidiary (Claro) increased the depreciation rate for its telephone plant of GSM Technology on a prospective basis. In
2010, the Company increased the depreciation rates of its assets that use certain fixed telephony technologies, mainly in Brazil, Colombia, Paraguay and Guatemala. These changes in estimates were made to better reflect technological advances in
telecommunications equipment in the Companys accounting. The increase in depreciation rates gave rise to an increase in depreciation expense for the years ended December 31, 2009 and 2010 of Ps. 4,461,748 and Ps. 6,291,113, respectively.

d) At December 31, 2010, Embratel has real property and other equipment delivered in guarantee of legal proceedings in the amount of Ps.
2,686,636 (Ps. 2,749,677 in 2009).

e) Relevant information related to the computation of the capitalizable borrowing costs is as follows:



|                                                        |  |      |            |   |      |     |            |  
|------------------------------------------------------- |  | ---- | ---------- | - | ---- | --- | ---------- | -
|                                                        |  | 2009 |            |   | 2010 |    
|Amount invested in the acquisition of qualifying assets |  | Ps.  | 29,226,390 |   |      | Ps. | 41,976,901 |  
|Capitalized interest                                    |  |      | 1,862,628  |   |      |     | 2,540,837  |  
|Capitalization rate                                     |  |      | 6.4        | % |      |     | 6.1        | %

This amount is being amortized over
a period of 7 years, which is the estimated remaining useful life of the plant.

f) Others

In December 2009, Star One entered into an agreement denominated in U.S. dollars with a manufacturer for the construction and launching of the Star One
C-3 satellite. The cost of the project is estimated to be approximately Ps. 3,336,417 (USD 270 million). At December 31, 2010, the amount of construction in process associated with this project amounts to Ps. 992,842 (Ps. 392,989 in 2009).



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9. Intangible and Other Assets

a) An analysis of intangible and other assets at January 1, 2009 and at December 31, 2009 and 2010 is as follows:



|                           |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     |             |  
|-------------------------- |  | --------------------------- | ----------- | - | ------------ | --- | --------- | ----- |  | --- | ----------------------- |  |  | ------------------------------------------------ | ---------- | - | ---------------------- | --- | --------- |  |  | --- | ----------- | -
|                           |  | At December 31, 2009        |            
|                           |  | Balance at beginningof year |             |   | Acquisitions |     |           | Other |  |     | Amortization of theyear |  |  | Effect of translation offoreign subsidiaries,net |            |   | Balance at end of year |    
|Licenses and rights of use |  | Ps.                         | 95,811,743  |   |              | Ps. | 9,237,878 |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  | Ps. | 105,049,621 |  
|Effect of translation      |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        | Ps. | 6,099,366 |  |  |     | 6,099,366   |  
|Accumulated amortization   |  |                             | (54,032,227 | ) |              |     |           |       |  |     |                         |  |  | Ps.                                              | (6,585,078 | ) |                        |     |           |  |  |     | (60,617,305 | )
|                           |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     |             |  
|Net                        |  |                             | 41,779,516  |   |              |     | 9,237,878 |       |  |     |                         |  |  |                                                  | (6,585,078 | ) |                        |     | 6,099,366 |  |  |     | 50,531,682  |  
|                           |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     |             |  
|Trademarks                 |  |                             | 12,163,183  |   |              |     |           |       |  | Ps. | 1,679                   |  |  |                                                  |            |   |                        |     |           |  |  |     | 12,164,862  |  
|Effect of translation      |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     | 287,104   |  |  |     | 287,104     |  
|Accumulated amortization   |  |                             | (5,749,400  | ) |              |     |           |       |  |     |                         |  |  |                                                  | (1,168,410 | ) |                        |     |           |  |  |     | (6,917,810  | )
|                           |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     |             |  
|Net                        |  |                             | 6,413,783   |   |              |     |           |       |  |     | 1,679                   |  |  |                                                  | (1,168,410 | ) |                        |     | 287,104   |  |  |     | 5,534,156   |  
|                           |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     |             |  
|Goodwill                   |  |                             | 64,706,795  |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     | 64,706,795  |  
|Effect of translation      |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     | 4,489,371 |  |  |     | 4,489,371   |  
|                           |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     |             |  
|Net                        |  | Ps.                         | 64,706,795  |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        | Ps. | 4,489,371 |  |  | Ps. | 69,196,166  |  
|                           |  |                             |             |   |              |     |           |       |  |     |                         |  |  |                                                  |            |   |                        |     |           |  |  |     |             |  



|                           |  |                             |                 |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  |                |  
|-------------------------- |  | --------------------------- | --------------- | - | ------------ | --- | --------- | ----- |  | --- | ----------------------- | - |  | ------------------------------------------------ | ---------- | - | --------------------- |  | ------------- | - |  |  | -------------- | -
|                           |  | At December 31, 2010        |                
|                           |  | Balance at beginningof year |                 |   | Acquisitions |     |           | Other |  |     | Amortization of theyear |   |  | Effect of translationof foreignsubsidiaries, net |            |   | Balance at end ofyear | 
|Licenses and rights of use |  |                             | Ps. 105,049,621 |   |              | Ps. | 4,705,397 |       |  | Ps. | (404,911                | ) |  |                                                  |            |   |                       |  |               |   |  |  | Ps.109,350,107 |  
|Effect of translation      |  |                             | 6,099,366       |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  | Ps.(1,385,222 | ) |  |  | 4,714,144      |  
|Accumulated amortization   |  |                             | (60,617,305     | ) |              |     |           |       |  |     | 248,054                 |   |  | Ps.                                              | (9,174,142 | ) |                       |  |               |   |  |  | (69,543,393    | )
|                           |  |                             |                 |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  |                |  
|Net                        |  |                             | 50,531,682      |   |              |     | 4,705,397 |       |  |     | (156,857                | ) |  |                                                  | (9,174,142 | ) |                       |  | (1,385,222    | ) |  |  | 44,520,858     |  
|                           |  |                             |                 |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  |                |  
|Trademarks                 |  |                             | 12,164,862      |   |              |     | 81,612    |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  | 12,246,474     |  
|Effect of translation      |  |                             | 287,104         |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  | 203,952       |   |  |  | 491,056        |  
|Accumulated amortization   |  |                             | (6,917,810      | ) |              |     |           |       |  |     |                         |   |  |                                                  | (1,287,843 | ) |                       |  |               |   |  |  | (8,205,653     | )
|                           |  |                             |                 |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  |                |  
|Net                        |  |                             | 5,534,156       |   |              |     | 81,612    |       |  |     |                         |   |  |                                                  | (1,287,843 | ) |                       |  | 203,952       |   |  |  | 4,531,877      |  
|                           |  |                             |                 |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  |                |  
|Goodwill                   |  |                             | 64,706,795      |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  | 64,706,795     |  
|Effect of translation      |  |                             | 4,489,371       |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  | 1,722,801     |   |  |  | 6,212,172      |  
|                           |  |                             |                 |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  |                |  
|Net                        |  |                             | Ps. 69,196,166  |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  | Ps. 1,722,801 |   |  |  | Ps. 70,918,967 |  
|                           |  |                             |                 |   |              |     |           |       |  |     |                         |   |  |                                                  |            |   |                       |  |               |   |  |  |                |  

b) The following is a description of the major changes in the Licenses and rights of use caption during the
years ended December 31, 2009 and 2010:

2009 Acquisitions

In 2009, the investment mainly refers to the acquisition of irrevocable rights of use (IRUs), and point-to-point concessions from related parties (NET) for a 5-year period with the option to renew for an
additional 5-year term.



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##### Table of Contents

2010 Acquisitions

i) In March 2010, Telcel obtained an extension on the concessions over its 9 regions to install, operate and exploit a public telecommunications network in the allocated frequencies of 835-84/880-890 Mhz,
for which it paid Ps.74,843.

ii) In August 2010, Telcel obtained concessions for its 9 operating regions to use, operate and exploit 10 Mhz
frequency bandwidth of radiofrequency spectrum for specific purposes in Mexico (Bid 21), These concessions are for periods of up to 20 years as of their issuance date for which the Company paid Ps. 3,793,865.

Both concessions have been amortized starting the month after they were issued, using the straight line method based over their respective useful lives.

c) Amortization of licenses, rights of use and trademarks for the years ended December 31, 2009 and 2010 amounted to Ps. 7,753,488, and
Ps. 10,461,985, respectively.

d) Subsequent event

During the first quarter of 2011, the Company won a public bid to provide mobile telecommunication services on a nationwide level in Costa Rica. The concession obtained by its subsidiary grants the
Company the right to use and exploit the 70MHz frequency range for a term of 15 years.

In connection with the public bid process, the formal
award of this concession will take place at a later date. The Company expects to start up operations in the Republic of Costa Rica during 2011. The approximate cost of the concession was USD 75 million (Ps. 926 million approximately).

10. Equity Investments in Associates and Acquisitions

a) An analysis of this caption is as follows



|                                  |  |               |            |  |                 |     |            |      |  |     |            | 
|--------------------------------- |  | ------------- | ---------- |  | --------------- | --- | ---------- | ---- |  | --- | ---------- | 
|                                  |  | At January 1, |            |  | At December 31, |    
|                                  |  | 2009          |            |  | 2009            |     |            | 2010 | 
|Investments in:                   |  |               |            |  |                 |     |            |      |  |     |            | 
|Net Serviços de Comunicação, S.A. |  | Ps.           | 11,156,688 |  |                 | Ps. | 16,567,698 |      |  | Ps. | 49,675,380 | 
|2Wire, Inc.                       |  |               | 276,000    |  |                 |     | 301,035    |      |  |     |            | 
|Other equity investments          |  |               | 445,251    |  |                 |     | 688,901    |      |  |     | 864,075    | 
|                                  |  |               |            |  |                 |     |            |      |  |     |            | 
|Total                             |  | Ps.           | 11,877,939 |  |                 | Ps. | 17,557,634 |      |  | Ps. | 50,539,455 | 
|                                  |  |               |            |  |                 |     |            |      |  |     |            | 



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b) The following is a summary of changes in the investment in Net Serviços de
Comunicação, S.A. during the years ended December 31, 2009 and 2010:



|                                  |  |                           |            |  |                         |  |  |                                          |  |     |                      |  |  |                            |           |  |  |     |            | 
|--------------------------------- |  | ------------------------- | ---------- |  | ----------------------- |  |  | ---------------------------------------- |  | --- | -------------------- |  |  | -------------------------- | --------- |  |  | --- | ---------- | 
|                                  |  | Balance atJanuary 1, 2009 |            |  | Equity interestacquired |  |  | Equity interest innet
income ofassociate |  |     | Effect oftranslation |  |  | Balance atDecember 31,2009 |          
|Net Serviços de Comunicação, S.A. |  | Ps.                       | 11,156,688 |  |                         |  |  |                                          |  | Ps. | 1,859,064            |  |  | Ps.                        | 3,551,946 |  |  | Ps. | 16,567,698 | 
|                                  |  |                           |            |  |                         |  |  |                                          |  |     |                      |  |  |                            |           |  |  |     |            | 



|                                  |  |                            |            |  |                          |     |            |                                          |  |     |                      |  |  |                            |         |  |  |     |            | 
|--------------------------------- |  | -------------------------- | ---------- |  | ------------------------ | --- | ---------- | ---------------------------------------- |  | --- | -------------------- |  |  | -------------------------- | ------- |  |  | --- | ---------- | 
|                                  |  | Balance atDecember 31,2009 |            |  | Equity 
interestacquired |     |            | Equity interest innet income
ofassociate |  |     | Effect oftranslation |  |  | Balance
atDecember 31,2010 |        
|Net Serviços de Comunicação, S.A. |  | Ps.                        | 16,567,698 |  |                          | Ps. | 31,524,315 |                                          |  | Ps. | 1,432,726            |  |  | Ps.                        | 150,641 |  |  | Ps. | 49,675,380 | 
|                                  |  |                            |            |  |                          |     |            |                                          |  |     |                      |  |  |                            |         |  |  |     |            | 

c) Acquisitions 2010

Net Serviços de Comunicação, S. (NET)

In October 2010, through a public bid,
Embratel acquired 155,415,666 preferred shares with no voting rights in NET for which it paid R$ 3,575 million (Ps. 26,216 million at the closing exchange rate in October). As a result, Embratels equity interest in NET increased from
35.38% to 80.70%. In November 2010, Embratel acquired 3,988,819 preferred shares with no voting rights in NET for which it paid R$ 93 million (Ps. 677 million at the closing exchange rate in November). As a result, Embratels equity
interest in NET increased to 81.86%. Additionally, in December 2010, Embratel acquired 27,143,246 preferred shares with no voting rights in NET for which it paid R$ 625 million (Ps. 4,632 million), thus increasing its equity interest in this
associate to 89.77%. At December 31, 2010, Telmex Internacional, through Embratel Participações, S.A (Embrapar) and Embratel, had an equity interest in NET (directly and indirectly) of 87.77%.



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##### Table of Contents

The following tables show condensed consolidated information of Net Serviços de
Comunicação, S.A.

Net Serviços de Comunicação S.A.

Condensed Consolidated Statements of Financial Position



|                                |  |                    |            |  |      |     |            | 
|------------------------------- |  | ------------------ | ---------- |  | ---- | --- | ---------- | 
|                                |  | As of December 31, |           
|                                |  | 2009               |            |  | 2010 |    
|Assets                          |  |                    |            | 
|Current assets                  |  | Ps.                | 17,007,418 |  |      | Ps. | 15,880,829 | 
|Non current assets              |  |                    | 38,397,310 |  |      |     | 48,300,106 | 
|                                |  |                    |            |  |      |     |            | 
|Total of assets                 |  | Ps.                | 55,404,728 |  |      | Ps. | 64,180,935 | 
|                                |  |                    |            |  |      |     |            | 
|Liabilities and equity          |  |                    |            | 
|Current liabilities             |  | Ps.                | 7,548,164  |  |      | Ps. | 9,373,879  | 
|Non current liabilities         |  |                    | 21,509,806 |  |      |     | 26,095,392 | 
|                                |  |                    |            |  |      |     |            | 
|Total of liabilities            |  |                    | 29,057,970 |  |      |     | 35,469,271 | 
|Total of equity                 |  |                    | 26,346,758 |  |      |     | 28,711,664 | 
|                                |  |                    |            |  |      |     |            | 
|Total of liabilities and equity |  | Ps.                | 55,404,728 |  |      | Ps. | 64,180,935 | 
|                                |  |                    |            |  |      |     |            | 

Net Serviços de Comunicação S.A.

Condensed Consolidated Statements of Income



|                             |  |                    |            |  |      |     |            | 
|---------------------------- |  | ------------------ | ---------- |  | ---- | --- | ---------- | 
|                             |  | As of December 31, |           
|                             |  | 2009               |            |  | 2010 |    
|Operating revenues, net      |  | Ps.                | 28,810,704 |  |      | Ps. | 36,051,290 | 
|Operating costs and expenses |  |                    | 24,788,693 |  |      |     | 31,510,857 | 
|                             |  |                    |            |  |      |     |            | 
|Operating income             |  |                    | 4,022,011  |  |      |     | 4,540,433  | 
|                             |  |                    |            |  |      |     |            | 
|Net income                   |  | Ps.                | 4,622,785  |  |      | Ps. | 2,559,185  | 
|                             |  |                    |            |  |      |     |            | 

The fair value of the Companys investment in NET, based on NETs share market value, at December 31, 2009
and 2010 amounts to Ps. 19,246,342 and Ps. 50,667,964, respectively.

The investment in the associate (NET) was not consolidated into the
Companys results of operations, since at the date of the financial statements, América Móvil does not hold the controlling interest in this associate.

Other investments in other associated companies as of December 31, 2009 and 2010 amounted to Ps. 688,901 and Ps. 864,075, respectively.

Under current Brazilian law governing cable operators, Embratel is not permitted to control Net Serviços because Embratel is not under the control of Brazilian citizens. If Brazilian law changes to
allow Embratel to own a controlling interest in Net Serviços, Embratel (which currently owns 49% of the voting interests and all of the non-voting interests in GB) has the right to purchase an additional interest in GB to give it control of
51% of the voting shares of Net Serviços, and Globo has the right to cause Embratel to purchase such interest.

The Company is not
obligated to make any additional payments or contingent considerations in connection with these acquisitions.

Subsequent events

i) On March 11, 2011, the Company entered into an agreement with Digicel Group Limited and affiliates (Digicel), to
acquire 100% of its operations in Honduras and El Salvador. As a part of this agreement, América Móvil will sell Digicel its Jamaican operations.

Digicel provides mobile telephony and value added services at a nationwide level in Honduras and El Salvador. The closing of this transaction is subject to obtaining the respective governmental and
regulatory authorizations in Honduras, El Salvador and Jamaica; and the parties expect this to occur during the second quarter of 2011.



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ii) On April 19, 2011, the Company announced that it has entered into a purchase agreement with GE
Satellite Holdings LLC and affiliates (GE) to acquire, either directly or indirectly, 20% of the shares of capital stock of StarOne S.A. (StarOne).

StarOne is a Brazilian Company engaged in providing satellite services in Brazil. Embratel is the owner of the remaining 80% of shares of capital stock of StarOne.

The closing of this transaction is subject to obtaining certain regulatory authorizations in Brazil, and the parties expect this to occur during the
third quarter of 2011.

11. Derivative Financial Instruments

To mitigate the risks of future increases in interest rates for the servicing of its long-term debt of Ps. 294,060,952 as of December 31, 2010, the Company has entered into interest-rate swap contracts in
over-the-counter transactions carried out with financial institutions from which the Company has obtained the loans. No collateral or other amounts are given as a guarantee in connection with these transactions. The weighted average interest rate is
5.70%.



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An analysis of the derivative financial instruments contracted by the Company at January 1, 2009 and at
December 31, 2009 and 2010 is as follows:



|                               |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            |     |        |  |  |     |        |  
|------------------------------ |  | ------------------- | ------ |  | ---------- | --- | ------ | --------------- |  | --- | ---------- |  |  | --------------- | ------ | - | ---------- | --- | ------ |  |  | --- | ------ | -
|                               |  | Amounts in millions |       
|                               |  | At January 1,       |        |  |            |     |        | At December 31, |  |     |            | 
|                               |  | 2009                |        |  | 2009       |     |        | 2010            | 
|Instrument                     |  | Notional amount     |        |  | Fair value |     |        | Notional amount |  |     | Fair value |  |  | Notional amount |        |   | Fair value |    
|Swaps Dollar-Peso              |  | USD                 | 6,375  |  |            | Ps. | 20,324 |                 |  | USD | 4,611      |  |  | Ps.             | 12,504 |   |            | USD | 3,592  |  |  | Ps. | 5,220  |  
|Swaps Euro-Peso                |  |                     |        |  |            |     |        |                 |  |    | 82         |  |  |                 | 25     |   |            |    | 244    |  |  |     | (342   | )
|Swaps Euro-Dollar              |  |                     |        |  |            |     |        |                 |  |    | 143        |  |  |                 | 107    |   |            |    | 123    |  |  |     | 36     |  
|Swaps Yen-Dollar               |  |                     |        |  |            |     |        |                 |  | ¥   | 13,000     |  |  |                 | (27    | ) |            | ¥   | 13,000 |  |  |     | 576    |  
|Swaps Yen-Peso                 |  | ¥                   | 19,891 |  |            |     | 989    |                 |  | ¥   | 19,891     |  |  |                 | 821    |   |            | ¥   | 19,891 |  |  |     | 1,006  |  
|Swap Dollar-Peso               |  | USD                 | 217    |  |            |     | 1,025  |                 |  | USD | 528        |  |  |                 | (1,094 | ) |            |     |        |  |  |     |        |  
|Swaps CHF-Euro                 |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            |     | 230    |  |  |     | 501    |  
|Interest rate swaps in Dollars |  | USD                 | 450    |  |            |     | 2,342  |                 |  |     |            |  |  |                 |        |   |            |     |        |  |  |     |        |  
|Interest rate swaps in Pesos   |  | Ps.                 | 32,752 |  |            |     | (77    | )               |  | Ps. | 33,152     |  |  |                 | (610   | ) |            | Ps. | 16,649 |  |  |     | (1,526 | )
|Cross currency coupon swaps    |  | USD                 | 350    |  |            |     | (95    | )               |  | USD | 50         |  |  |                 | (     | ) |            |     |        |  |  |     |        |  
|Forwards Dollar-Peso           |  | USD                 | 3,921  |  |            |     | 2,518  |                 |  | USD | 3,745      |  |  |                 | (58    | ) |            | USD | 1,673  |  |  |     | (150   | )
|                               |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            |     |        |  |  |     |        |  
|Total asset                    |  |                     |        |  |            | Ps. | 27,026 |                 |  |     |            |  |  | Ps.             | 11,667 |   |            |     |        |  |  | Ps. | 5,321  |  
|                               |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            |     |        |  |  |     |        |  
|Interest rate swaps            |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            | Ps. | 9,400  |  |  | Ps. | (454   | )
|                               |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            |     |        |  |  |     |        |  
|Total liability                |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            |     |        |  |  | Ps. | (454   | )
|                               |  |                     |        |  |            |     |        |                 |  |     |            |  |  |                 |        |   |            |     |        |  |  |     |        |  

The changes in the fair value on these derivative financial instruments for the years ended on December 31, 2009 and
2010 amounted to a loss of Ps. (8,571,230) and Ps. (9,141,976), respectively, and such amounts are included in the statement of income as part of the caption Valuation of derivatives and other financial items, net.

12. Employee Benefits

a) An analysis of
the net liability for employee benefits is as follows:



|            |  |               |            |  |                 |     |            |      |  |     |            | 
|----------- |  | ------------- | ---------- |  | --------------- | --- | ---------- | ---- |  | --- | ---------- | 
|            |  | At January 1, |            |  | At December 31, |    
|            |  | 2009          |            |  | 2009            |     |            | 2010 | 
|Mexico      |  | Ps.           | 48,159     |  |                 | Ps. | 60,003     |      |  | Ps. | 77,531     | 
|Ecuador     |  |               | 46,143     |  |                 |     | 57,027     |      |  |     | 62,477     | 
|Brazil      |  |               | 2,263,573  |  |                 |     | 2,797,427  |      |  |     | 2,483,463  | 
|Puerto Rico |  |               | 11,293,401 |  |                 |     | 11,033,051 |      |  |     | 10,261,508 | 
|            |  |               |            |  |                 |     |            |      |  |     |            | 
|Total       |  | Ps.           | 13,651,276 |  |                 | Ps. | 13,947,508 |      |  | Ps. | 12,884,979 | 
|            |  |               |            |  |                 |     |            |      |  |     |            | 



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The Companys post-retirement obligations for seniority premiums, pension and retirement plans, and
medical services in the countries in which it operates and that have defined benefit and defined contribution plans are as follows:

b)
Puerto Rico

Pension plan

Pursuant to the provisions of the 1974 Retirement Income Assurance Act (Acto de Seguridad de Renta de Jubilación de 1974) of the
Republic of Puerto Rico, all full time employees in Puerto Rico are entitled to a retirement plan. Contributions to the plan are deductible for income tax purposes.

This pension plan is comprised of two types of payments:



| |  | The annuity or retirement pension to which workers are entitled when they reach a certain number of years of service is computed by applying certain
percentages to the number of years of service, taking as a basis the salary of the worker during the last three years of employment, and
|- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  | The payment of an amount that ranges from 9 to 12 months of the employee's current salary. The number of months (9 or 12) depends on the number of
years of service of the employee.
|- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The following tables show the net benefit cost and liabilities for labor obligations
related to the funds and costs associated with these pension and post-retirement plans at January 1, 2009 and at December 31, 2009 and 2010:



|                                                    |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  
|--------------------------------------------------- |  | ---------------------------- | ----------- | - | ------------------------ | --- | ----------- | ---------------------------- |  | --- | ------------------------ | - |  | ---------------------------- | ---------- | - | ------------------------ | --- | ---------- | - |  | --- | ---------- | -
|                                                    |  | At January 1,                |             |   | At December 31,          |    
|                                                    |  | 2009                         |             |   | 2009                     |     |             | 2010                         | 
|                                                    |  | Pensions and sum 
ofbenefits |             |   | Post-retirement benefits |     |             | Pensions and sum 
ofbenefits |  |     | Post-retirement benefits |   |  | Pensions and sum 
ofbenefits |            |   | Post-retirement benefits |    
|Projected benefit obligation at beginning of year   |  | Ps.                          | 15,243,410  |   |                          | Ps. | 7,144,992   |                              |  | Ps. | 18,785,459               |   |  | Ps.                          | 9,924,518  |   |                          | Ps. | 18,029,248 |   |  | Ps. | 8,829,662  |  
|Service cost                                        |  |                              | 309,200     |   |                          |     | 88,387      |                              |  |     | 272,015                  |   |  |                              | 79,899     |   |                          |     | 232,830    |   |  |     | 72,746     |  
|Financing cost on projected benefit obligation cost |  |                              | 1,121,865   |   |                          |     | 590,114     |                              |  |     | 1,101,801                |   |  |                              | 515,593    |   |                          |     | 989,746    |   |  |     | 475,600    |  
|Actuarial loss (gain)                               |  |                              | (261,115    | ) |                          |     | 735,947     |                              |  |     | 777,991                  |   |  |                              | (615,051   | ) |                          |     | 1,882,297  |   |  |     | 913,352    |  
|Other amended plans                                 |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              | 39,152     |   |                          |     |            |   |  |     | 54,149     |  
|Payments from trust fund                            |  |                              |             |   |                          |     |             |                              |  |     | (824,302                 | ) |  |                              | (323,986   | ) |                          |     |            |   |  |     | (201,866   | )
|Other amended plans                                 |  |                              |             |   |                          |     | 31,963      |                              |  |     |                          |   |  |                              | 15,177     |   |                          |     |            |   |  |     | 11,356     |  
|Benefits paid                                       |  |                              | (1,376,398  | ) |                          |     | (423,906    | )                            |  |     | (1,418,232               | ) |  |                              | (454,059   | ) |                          |     | (1,401,372 | ) |  |     | (404,263   | )
|Effect of translation                               |  |                              | 3,748,497   |   |                          |     | 1,757,021   |                              |  |     | (665,484                 | ) |  |                              | (351,581   | ) |                          |     | (968,650   | ) |  |     | (474,382   | )
|                                                    |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  
|Projected benefit obligation at end of year         |  | Ps.                          | 18,785,459  |   |                          | Ps. | 9,924,518   |                              |  | Ps. | 18,029,248               |   |  | Ps.                          | 8,829,662  |   |                          | Ps. | 18,764,099 |   |  | Ps. | 9,276,354  |  
|                                                    |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  
|Changes in plan assets:                             |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  
|Established fund at beginning of year               |  | Ps.                          | 13,526,769  |   |                          |     |             |                              |  | Ps. | 15,041,276               |   |  |                              |            |   |                          | Ps. | 13,798,568 |   |  | Ps. |            |  
|Actual return on plan assets                        |  |                              | 1,382,473   |   |                          |     |             |                              |  |     | 1,163,528                |   |  |                              |            |   |                          |     | 954,922    |   |  |     |            |  
|Employee contributions                              |  |                              | 59,041      |   |                          | Ps. | 391,943     |                              |  |     | 112,225                  |   |  | Ps.                          | 399,727    |   |                          |     | 641,419    |   |  |     | 338,758    |  
|Payments from trust fund                            |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              | 39,156     |   |                          |     |            |   |  |     | 54,149     |  
|Benefits paid                                       |  |                              | (1,366,294  | ) |                          |     | (391,943    | )                            |  |     | (1,408,548               | ) |  |                              | (438,883   | ) |                          |     | (1,392,265 | ) |  |     | (392,907   | )
|Actuarial loss (gain)                               |  |                              | (1,887,072  | ) |                          |     |             |                              |  |     | (577,068                 | ) |  |                              |            |   |                          |     | (475,281   | ) |  |     |            |  
|Effect of translation                               |  |                              | 3,326,359   |   |                          |     |             |                              |  |     | (532,845                 | ) |  |                              |            |   |                          |     | (741,352   | ) |  |     |            |  
|                                                    |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  
|Established fund at end of year                     |  | Ps.                          | 15,041,276  |   |                          |     |             |                              |  | Ps. | 13,798,568               |   |  | Ps.                          |            |   |                          | Ps. | 12,786,011 |   |  | Ps. |            |  
|                                                    |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  
|Plan asset shortfall                                |  | Ps.                          | (3,744,183) |   |                          | Ps. | (9,924,518) |                              |  | Ps. | ((4,230,680)             |   |  | Ps.                          | (8,829,662 | ) |                          | Ps. | (5,978,088 | ) |  | Ps. | (9,276,354 | )
|Unrecognized actuarial loss, net                    |  |                              | 1,639,353   |   |                          |     | 735,947     |                              |  |     | 2,914,492                |   |  |                              | 91,724     |   |                          |     | 5,016,009  |   |  |     | 988,627    |  
|Past services and changes in plans                  |  |                              |             |   |                          |     |             |                              |  |     | (667,113                 | ) |  |                              | (311,812   | ) |                          |     | (576,378   | ) |  |     | (435,324   | )
|                                                    |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  
|Total liabilities, net                              |  | Ps.                          | (2,104,830) |   |                          | Ps. | (9,188,571) |                              |  | Ps. | (1,983,301)              |   |  | Ps.                          | (9,049,750 | ) |                          | Ps. | (1,538,457 | ) |  | Ps. | (8,723,051 | )
|                                                    |  |                              |             |   |                          |     |             |                              |  |     |                          |   |  |                              |            |   |                          |     |            |   |  |     |            |  



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Net period cost

An analysis of the net period cost for the years ended December 31, 2009 and 2010 is as follows:



|                                               |  |                             |            |   |                         |     |         |                             |  |     |                         |   |  |     |         |  
|---------------------------------------------- |  | --------------------------- | ---------- | - | ----------------------- | --- | ------- | --------------------------- |  | --- | ----------------------- | - |  | --- | ------- | -
|                                               |  | 2009                        |            |   | 2010                    |    
|                                               |  | Pensions and sumof benefits |            |   | Post-retirementbenefits |     |         | Pensions and sumof
benefits |  |     | Post-retirementbenefits |  
|Service cost                                   |  | Ps.                         | 272,015    |   |                         | Ps. | 79,899  |                             |  | Ps. | 232,830                 |   |  | Ps. | 72,746  |  
|Financing cost on projected benefit obligation |  |                             | 1,101,801  |   |                         |     | 515,593 |                             |  |     | 989,746                 |   |  |     | 475,600 |  
|Actual return on plan assets                   |  |                             | (1,163,528 | ) |                         |     |         |                             |  |     | (954,922                | ) |  |     |         |  
|Effect of adjustments                          |  |                             | (113,682   | ) |                         |     |         |                             |  |     |                         |   |  |     |         |  
|Net actuarial loss                             |  |                             | 8,925      |   |                         |     | 3,119   |                             |  |     | 99,475                  |   |  |     | 11,504  |  
|Past services and changes in plans             |  |                             | (43,507    | ) |                         |     | (12,157 | )                           |  |     | (54,893                 | ) |  |     | (61,607 | )
|                                               |  |                             |            |   |                         |     |         |                             |  |     |                         |   |  |     |         |  
|                                               |  | Ps.                         | 62,024     |   |                         | Ps. | 586,454 |                             |  | Ps. | 312,236                 |   |  | Ps. | 498,243 |  
|                                               |  |                             |            |   |                         |     |         |                             |  |     |                         |   |  |     |         |  



|                               |  |                    |                |  |                 |      |                |  |  |  |                | 
|------------------------------ |  | ------------------ | -------------- |  | --------------- | ---- | -------------- |  |  |  | -------------- | 
|                               |  | At January 
1,2009 |                |  | At December 31, |     
|                               |  |                    | 2009           |  |                 | 2010 |               
|Projected benefit obligation   |  |                    | Ps. 18,785,459 |  |                 |      | Ps. 18,029,248 |  |  |  | Ps. 18,764,099 | 
|Accumulated benefit obligation |  |                    | 17,542,834     |  |                 |      | 17,809,078     |  |  |  | 18,619,926     | 
|Fair value of plan assets      |  |                    | 15,041,276     |  |                 |      | 13,798,568     |  |  |  | 12,786,011     | 

Actuarial assumptions

The average rates used in determining the net period cost for 2009 and 2010 were as follows:



|                                |  |      |      |   |      |  |      |  
|------------------------------- |  | ---- | ---- | - | ---- |  | ---- | -
|                                |  | 2009 |      |   | 2010 | 
|Discount rate                   |  |      | 6.25 | % |      |  | 5.90 | %
|Long-term rate of return        |  |      | 8.50 | % |      |  | 7.50 | %
|Rate of future salary increases |  |      | 4.00 | % |      |  | 4.00 | %

The average rates and other
actuarial assumptions used in determining post-retirement obligations for medical services and others are as follows:



|                                                                |  |      |      |   |      |  |      |  
|--------------------------------------------------------------- |  | ---- | ---- | - | ---- |  | ---- | -
|                                                                |  | 2009 |      |   | 2010 | 
|Percentage of increase in health care costs for the coming year |  |      | 6.9  | % |      |  | 6.7  | %
|Cost percentage due to death                                    |  |      | 4.50 | % |      |  | 4.50 | %
|Year to which this level will be maintained                     |  |      | 2021 |   |      |  | 2021 |  



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The average rates and other actuarial assumptions used to determine the net period cost of post-retirement
obligations are as follows:



|                                                                   |  |      |      |   |      |  |      |  
|------------------------------------------------------------------ |  | ---- | ---- | - | ---- |  | ---- | -
|                                                                   |  | 2009 |      |   | 2010 | 
|Percentage of increase in health care costs for the following year |  |      | 5.8  | % |      |  | 6.9  | %
|Cost percentage due to death                                       |  |      | 5.0  | % |      |  | 4.50 | %
|Year to which this level will be maintained                        |  |      | 2021 |   |      |  | 2021 |  

The projected return on plan
assets is as follows:



|                          |  |      |     |   |      |  |     |  
|------------------------- |  | ---- | --- | - | ---- |  | --- | -
|                          |  | 2009 |     |   | 2010 | 
|Equity instruments        |  |      | 5.1 | % |      |  | 4.3 | %
|Debt instruments          |  |      | 6.3 | % |      |  | 6.9 | %
|Cash and cash equivalents |  |      | 2.6 | % |      |  | 1.0 | %

Plan assets

The percentages invested in plan assets are as follows:



|                          |  |                          |       |   |      |  |      |      |  |  |       |  
|------------------------- |  | ------------------------ | ----- | - | ---- |  | ---- | ---- |  |  | ----- | -
|                          |  | Post-retirement benefits |      
|                          |  | 2008                     |       |   | 2009 |  |      | 2010 | 
|Equity instruments        |  |                          | 2.0   | % |      |  | 2.5  | %    |  |  | 1.54  | %
|Debt instruments          |  |                          | 35.0  | % |      |  | 41.3 | %    |  |  | 48.06 | %
|Cash and cash equivalents |  |                          | 63.0  | % |      |  | 56.2 | %    |  |  | 50.40 | %
|                          |  |                          |       |   |      |  |      |      |  |  |       |  
|                          |  |                          | 100.0 | % |      |  | 100  | %    |  |  | 100   | %
|                          |  |                          |       |   |      |  |      |      |  |  |       |  



|             |  |                          |      |   |      |  |      |  
|------------ |  | ------------------------ | ---- | - | ---- |  | ---- | -
|             |  | Future pension increases |     
|             |  | 2009                     |      |   | 2010 | 
|Pension plan |  |                          | 4.00 | % |      |  | 4.00 | %



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c) Brazil (Embratel)

Embratel has a defined benefit pension plan (DBP) and a defined contribution plan (DCP) that covers virtually all of its employees, as well as a medical assistance plan (MAP) granted to participants in
the DBP. The liabilities (assets) recognized at January 1, 2009 and at December 31, 2009 and 2010 under such plans are as follows:



|                       |  |               |           |   |                 |     |            |      |  |     |            |  
|---------------------- |  | ------------- | --------- | - | --------------- | --- | ---------- | ---- |  | --- | ---------- | -
|                       |  | At January 1, |           |   | At December 31, |    
|                       |  | 2009          |           |   | 2009            |     |            | 2010 | 
|DBP                    |  | Ps.           | (838,651  | ) |                 | Ps. | (1,305,603 | )    |  | Ps. | (1,676,366 | )
|MAP                    |  |               | 2,624,675 |   |                 |     | 3,668,593  |      |  |     | 3,777,244  |  
|DCP                    |  |               | 477,549   |   |                 |     | 434,437    |      |  |     | 382,585    |  
|                       |  |               |           |   |                 |     |            |      |  |     |            |  
|Total liabilities, net |  | Ps.           | 2,263,573 |   |                 | Ps. | 2,797,427  |      |  | Ps. | 2,483,463  |  
|                       |  |               |           |   |                 |     |            |      |  |     |            |  

Pension plan

An analysis of obligations under the DBP, DCP and MAP at January 1, 2009 and at December 31, 2009 and 2010, as well as the changes in such plans
during the years ended December 31, 2009 and 2010, is as follows:



|                                                  |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|------------------------------------------------- |  | ------------- | --------- | - | --------------- | --- | ---------- | ---- |  | --- | ---------- | - |  | --- | ---------- | - | --- | --- | ---------- | - |  | --- | ---------- | -
|                                                  |  | At January 1, |           |   | At December 31, |    
|                                                  |  | 2009          |           |   | 2009            |     |            | 2010 | 
|                                                  |  | DBP           |           |   | MAP             |     |            | DBP  |  |     | MAP        |   |  | DBP |            |   | MAP |    
|Projected benefit obligation at beginning of year |  | Ps.           | 7,204,138 |   |                 | Ps. | 2,443,211  |      |  | Ps. | 7,598,503  |   |  | Ps. | 2,360,078  |   |     | Ps. | 9,385,959  |   |  | Ps. | 3,173,775  |  
|Service cost                                      |  |               | 400       |   |                 |     | 51         |      |  |     | 60         |   |  |     | 133        |   |     |     | 193        |   |  |     | 140        |  
|Financing cost on projected benefit obligation    |  |               | 701,779   |   |                 |     | 243,232    |      |  |     | 1,016,279  |   |  |     | 322,635    |   |     |     | 998,943    |   |  |     | 345,520    |  
|Actuarial loss (gain)                             |  |               | 675,872   |   |                 |     | (102,305   | )    |  |     | (579,287   | ) |  |     | (66,388    | ) |     |     | 1,296,843  |   |  |     | 793,333    |  
|Other amended plans                               |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|Payments from trust fund                          |  |               | (582,570  | ) |                 |     | (88,077    | )    |  |     | (888,347   | ) |  |     | (138,034   | ) |     |     | (896,405   | ) |  |     | (162,062   | )
|Effect of translation                             |  |               | (401,116  | ) |                 |     | (136,034   | )    |  |     | 2,238,751  |   |  |     | 695,351    |   |     |     | (104,488   | ) |  |     | (35,333    | )
|                                                  |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|Projected benefit obligation at end of year       |  | Ps.           | 7,598,503 |   |                 | Ps. | 2,360,078  |      |  | Ps. | 9,385,959  |   |  | Ps. | 3,173,775  |   |     | Ps. | 10,681,045 |   |  | Ps. | 4,115,373  |  
|                                                  |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|Changes in plan assets:                           |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|Established fund at beginning of year             |  | Ps.           | 8,921,050 |   |                 | Ps. | 214,974    |      |  | Ps. | 9,172,386  |   |  | Ps. | 128,408    |   |     | Ps. | 12,301,967 |   |  | Ps. | 8,025      |  
|Actual return on plan assets                      |  |               | 876,409   |   |                 |     | 16,614     |      |  |     | 1,235,754  |   |  |     | 11,475     |   |     |     | 1,323,364  |   |  |     | (6,660     | )
|Actuarial loss (gain)                             |  |               | 453,872   |   |                 |     | (3,163     | )    |  |     | 79,266     |   |  |     | (31,694    | ) |     |     | 3,000,027  |   |  |     | 8,640      |  
|Employee contributions                            |  |               | 336       |   |                 |     | 29         |      |  |     | 442        |   |  |     | 37         |   |     |     | 430        |   |  |     | 166,141    |  
|Payments from trust fund                          |  |               | (582,570  | ) |                 |     | (88,077    | )    |  |     | (888,347   | ) |  |     | (138,034   | ) |     |     | (896,405   | ) |  |     | (162,062   | )
|Effect of translation                             |  |               | (496,711  | ) |                 |     | (11,969    | )    |  |     | 2,702,466  |   |  |     | 37,833     |   |     |     | (136,950   | ) |  |     | (90        | )
|                                                  |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|Established fund at end of year                   |  | Ps.           | 9,172,386 |   |                 | Ps. | 128,408    |      |  | Ps. | 12,301,967 |   |  | Ps. | 8,025      |   |     | Ps. | 15,592,433 |   |  | Ps. | 13,994     |  
|                                                  |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|Plan asset surplus (shortfall)                    |  | Ps.           | 1,573,883 |   |                 | Ps. | (2,231,670 | )    |  | Ps. | 2,916,008  |   |  | Ps. | (3,165,750 | ) |     | Ps. | 4,911,388  |   |  | Ps. | (4,101,379 | )
|Unrecognized actuarial loss, net                  |  |               | (735,232  | ) |                 |     | (393,005   | )    |  |     | (1,610,405 | ) |  |     | (502,843   | ) |     |     | (3,235,022 | ) |  |     | 324,135    |  
|                                                  |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  
|Total assets (liabilities), net                   |  | Ps.           | 838,651   |   |                 | Ps. | (2,624,675 | )    |  | Ps. | 1,305,603  |   |  | Ps. | (3,668,593 | ) |     | Ps. | 1,676,366  |   |  | Ps. | (3,777,244 | )
|                                                  |  |               |           |   |                 |     |            |      |  |     |            |   |  |     |            |   |     |     |            |   |  |     |            |  



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Net period cost

An analysis of the net period cost for the years ended December 31, 2009 and 2010 is as follows:



|                                               |  |      |            |   |      |     |         |     |  |     |            |   |  |     |         |  
|---------------------------------------------- |  | ---- | ---------- | - | ---- | --- | ------- | --- |  | --- | ---------- | - |  | --- | ------- | -
|                                               |  | 2009 |            |   | 2010 |    
|                                               |  | DBP  |            |   | MAP  |     |         | DBP |  |     | MAP        |  
|Service cost                                   |  | Ps.  | 60         |   |      | Ps. | 133     |     |  | Ps. | 193        |   |  | Ps. | 140     |  
|Financing cost on projected benefit obligation |  |      | 1,016,279  |   |      |     | 322,635 |     |  |     | 998,943    |   |  |     | 345,520 |  
|Projected return on plan assets                |  |      | (1,235,754 | ) |      |     | (11,475 | )   |  |     | (1,323,364 | ) |  |     | 6,660   |  
|Amortization of (gains) losses                 |  |      |           |   |      |     | (40,653 | )   |  |     | (60,643    | ) |  |     | (36,679 | )
|                                               |  |      |            |   |      |     |         |     |  |     |            |   |  |     |         |  
|                                               |  | Ps.  | (219,415   | ) |      | Ps. | 270,640 |     |  | Ps. | (384,871   | ) |  | Ps. | 315,641 |  
|                                               |  |      |            |   |      |     |         |     |  |     |            |   |  |     |         |  

Actuarial assumptions

The average rates used in determining the net period cost for 2009 and 2010 were as follows:



|                                |  |      |       |   |      |  |       |  
|------------------------------- |  | ---- | ----- | - | ---- |  | ----- | -
|                                |  | 2009 |       |   | 2010 | 
|Long-term rate of return        |  |      | 10.77 | % |      |  | 11.25 | %
|Rate of future salary increases |  |      | 4.50  | % |      |  | 4.50  | %
|Discount rate                   |  |      | 11.25 | % |      |  | 10.75 | %

Plan assets

The percentages invested in plan assets are as follows:



|                   |  |                    |        |   |                 |      |        |   |  |  |        |  
|------------------ |  | ------------------ | ------ | - | --------------- | ---- | ------ | - |  |  | ------ | -
|                   |  | At January 
1,2009 |        |   | At December 31, |     
|                   |  |                    | 2009   |   |                 | 2010 |       
|Debt instruments   |  |                    | 80.77  | % |                 |      | 88.63  | % |  |  | 88.06  | %
|Equity instruments |  |                    | 14.54  | % |                 |      | 7.29   | % |  |  | 7.88   | %
|Other investments  |  |                    | 4.69   | % |                 |      | 4.08   | % |  |  | 4.06   | %
|                   |  |                    |        |   |                 |      |        |   |  |  |        |  
|                   |  |                    | 100.00 | % |                 |      | 100.00 | % |  |  | 100.00 | %
|                   |  |                    |        |   |                 |      |        |   |  |  |        |  



|                                         |  |                          |      |   |      |  |      |  
|---------------------------------------- |  | ------------------------ | ---- | - | ---- |  | ---- | -
|                                         |  | Future pension increases |     
|                                         |  | 2009                     |      |   | 2010 | 
|Obligations for post-retirement benefits |  |                          | 4.50 | % |      |  | 4.50 | %



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|                                          |  |                                                                 |     |   |      |  |      |  
|----------------------------------------- |  | --------------------------------------------------------------- | --- | - | ---- |  | ---- | -
|                                          |  | Post-retirement mortality for pensioners
more than 65 years old |    
|                                          |  | 2009                                                            |     |   | 2010 | 
|Pension plan:                             |  |                                                                 |     |   |      |  |      |  
|Men                                       |  |                                                                 | 1.3 | % |      |  | 1.1  | %
|Women                                     |  |                                                                 | 0.7 | % |      |  | 0.7  | %
|                                          |  |                                                                
|Obligations for post-retirement benefits: |  |                                                                 |     |   |      |  |      |  
|Men                                       |  |                                                                 | 1.3 | % |      |  | 1.3  | %
|Women                                     |  |                                                                 | 0.7 | % |      |  | 0.76 | %

DCP

Embratel makes contributions to the DCP through Embratel Social Security Fund  Telos. Contributions are computed based on the salaries of the
employees, who decide on the percentage of their contributions to the plan (between 3% and 12% of their salaries). Embratel contributes the same percentage as the employee, capped at 8% of the participants balance. All employees are eligible
to participate in this plan.

The unfunded liability represents Embratels obligation for those participants that migrated from the DBP
to the DCP. This liability is being amortized over a term of 20 years as of January 1, 1999. Unpaid balances are adjusted monthly based on the yield of the asset portfolio at that date and is increased based on the General Price Index of Brazil
plus 6 percentage points per year. At December 31, 2010, the balance of the DCP liability was Ps. 382,585 (Ps. 434,437, at December 31, 2009 and Ps. 477,549, at January 1, 2009).

d) Mexico (Teléfonos de México)

Pensions and seniority premiums

Telmex has an employee pension and seniority premium plan
that covers most of its workers. Pensions and seniority premiums are determined based on the salary of workers in their final year of service, the number of years worked at Telmex and their age at retirement.

Telmex has established an irrevocable trust fund and makes annual contributions to that trust fund, which are considered deductible for purposes of
income tax and employee profit sharing. The most important information related to labor obligations is as follows:



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Analysis of changes in the defined benefit obligation



|                                                |  |                |                 |   |                 |  |                 |      |  |  |                 |  
|----------------------------------------------- |  | -------------- | --------------- | - | --------------- |  | --------------- | ---- |  |  | --------------- | -
|                                                |  | At January 31, |                 |   | At December 31, | 
|                                                |  | 2009           |                 |   | 2009            |  |                 | 2010 | 
|Defined benefit obligation at beginning of year |  |                | Ps. 159,484,041 |   |                 |  | Ps. 176,182,835 |      |  |  | Ps. 197,332,833 |  
|Service cost                                    |  |                | 4,333,194       |   |                 |  | 4,431,755       |      |  |  | 4,850,844       |  
|Financing cost on projected benefit obligation  |  |                | 14,344,072      |   |                 |  | 15,861,542      |      |  |  | 17,751,583      |  
|Actuarial loss                                  |  |                | 6,662,976       |   |                 |  | 10,200,996      |      |  |  | 7,608,718       |  
|Payments to employees                           |  |                | (194,437        | ) |                 |  | (215,298        | )    |  |  | (6,438,985      | )
|Payments from trust fund                        |  |                | (8,447,011      | ) |                 |  | (9,128,997      | )    |  |  | (4,177,826      | )
|                                                |  |                |                 |   |                 |  |                 |      |  |  |                 |  
|Defined benefit obligation at end of year       |  |                | Ps. 176,182,835 |   |                 |  | Ps. 197,332,833 |      |  |  | Ps. 216,927,167 |  
|                                                |  |                |                 |   |                 |  |                 |      |  |  |                 |  

Analysis of changes in plan assets



|                                      |  |      |                 |   |      |  |                 |      |  |  |                 |  
|------------------------------------- |  | ---- | --------------- | - | ---- |  | --------------- | ---- |  |  | --------------- | -
|                                      |  | 2008 |                 |   | 2009 |  |                 | 2010 | 
|Established fund at beginning of year |  |      | Ps. 156,979,097 |   |      |  | Ps. 145,475,893 |      |  |  | Ps. 163,995,375 |  
|Projected return on plan assets       |  |      | 15,572,294      |   |      |  | 17,568,093      |      |  |  | 19,680,678      |  
|Actuarial gain                        |  |      | (22,950,409     | ) |      |  | 4,328,439       |      |  |  | 1,081,612       |  
|Contributions to trust fund           |  |      | 4,321,922       |   |      |  | 5,751,947       |      |  |  | 289             |  
|Payments from trust fund              |  |      | (8,447,011      | ) |      |  | (9,128,997      | )    |  |  | (4,177,826      | )
|                                      |  |      |                 |   |      |  |                 |      |  |  |                 |  
|Established fund at end of year       |  |      | Ps. 145,475,893 |   |      |  | Ps. 163,995,375 |      |  |  | Ps. 180,580,128 |  
|                                      |  |      |                 |   |      |  |                 |      |  |  |                 |  

Analysis of the pension asset



|                                                         |  |                |                 |  |                 |  |                 |      |  |  |                 | 
|-------------------------------------------------------- |  | -------------- | --------------- |  | --------------- |  | --------------- | ---- |  |  | --------------- | 
|                                                         |  | At January 31, |                 |  | At December 31, | 
|                                                         |  | 2009           |                 |  | 2009            |  |                 | 2010 | 
|Plan assets shortfall for the defined benefit obligation |  |                | Ps.(30,706,942) |  |                 |  | Ps.(33,337,458) |      |  |  | Ps.(36,347,039) | 
|Unamortized actuarial loss                               |  |                | 44,841,884      |  |                 |  | 48,462,508      |      |  |  | 52,571,969      | 
|Past services and changes in plan                        |  |                | 112,847         |  |                 |  | 89,142          |      |  |  | 65,437          | 
|                                                         |  |                |                 |  |                 |  |                 |      |  |  |                 | 
|Pension asset                                            |  |                | Ps. 14,247,789  |  |                 |  | Ps. 15,214,192  |      |  |  | Ps. 16,290,367  | 
|                                                         |  |                |                 |  |                 |  |                 |      |  |  |                 | 

Analysis of net period cost



|                                                       |  |                 |               |   |      |  |               |  
|------------------------------------------------------ |  | --------------- | ------------- | - | ---- |  | ------------- | -
|                                                       |  | At December 31, |              
|                                                       |  | 2009            |               |   | 2010 | 
|Service cost                                           |  |                 | Ps. 4,431,755 |   |      |  | Ps. 4,850,844 |  
|Financing cost on projected benefit obligation         |  |                 | 15,861,542    |   |      |  | 17,751,583    |  
|Projected return on plan assets                        |  |                 | (17,568,093   | ) |      |  | (19,680,678   | )
|Amortization of past services and transition liability |  |                 | 23,705        |   |      |  | 23,705        |  
|Amortization of variances in assumptions               |  |                 | 2,251,716     |   |      |  | 2,418,254     |  
|                                                       |  |                 |               |   |      |  |               |  
|Net period cost                                        |  |                 | Ps. 5,000,625 |   |      |  | Ps. 5,363,708 |  
|                                                       |  |                 |               |   |      |  |               |  



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##### Table of Contents

The rates used in the actuarial studies at December 31, 2009 and 2010 were as follows:



|                               |  |                |      | 
|------------------------------ |  | -------------- | ---- | 
|                               |  | Nominalrates % |     
|Discount of labor obligations: |  |                |      | 
|Long-term average              |  |                | 9.20 | 
|Salary increase:               |  |                |      | 
|Long-term average              |  |                | 4.50 | 

Plan assets

The percentages invested in plan assets are as follows:



|                   |  |               |       |  |                 |  |       |      |  |  |       | 
|------------------ |  | ------------- | ----- |  | --------------- |  | ----- | ---- |  |  | ----- | 
|                   |  | At January 1, |       |  | At December 31, | 
|                   |  | 2009          |       |  | 2009            |  |       | 2010 | 
|Equity instruments |  |               | 53.3  |  |                 |  | 52.7  |      |  |  | 53.6  | 
|Debt instruments   |  |               | 45.9  |  |                 |  | 45.9  |      |  |  | 46.4  | 
|Other investments  |  |               | 0.8   |  |                 |  | 1.4   |      |  |  |      | 
|                   |  |               |       |  |                 |  |       |      |  |  |       | 
|                   |  |               | 100.0 |  |                 |  | 100.0 |      |  |  | 100.0 | 
|                   |  |               |       |  |                 |  |       |      |  |  |       | 



|                                         |  |                          |      |   |      |  |      |  
|---------------------------------------- |  | ------------------------ | ---- | - | ---- |  | ---- | -
|                                         |  | Future pension increases |     
|                                         |  | 2009                     |      |   | 2010 | 
|Obligations for post-retirement benefits |  |                          | 4.50 | % |      |  | 4.50 | %



|              |  |                                                                 |      |   |      |  |      |  
|------------- |  | --------------------------------------------------------------- | ---- | - | ---- |  | ---- | -
|              |  | Post-retirement mortality for pensioners
more than 65 years old |     
|              |  | 2009                                                            |      |   | 2010 | 
|Pension plan: |  |                                                                 |      |   |      |  |      |  
|Men           |  |                                                                 | 1.90 | % |      |  | 1.90 | %
|Women         |  |                                                                 | 1.90 | % |      |  | 1.90 | %

In 2010, the net actuarial loss of
Ps. 6,527,106 is comprised of (i) an actuarial gain of Ps. 1,081,612 resulting from the behavior in the plan assets due to increases in the value of equity instruments, and in fixed-yield instruments due to variances in the reference rates, and
(ii) an actuarial loss of Ps. 7,608,718, due primarily to the fact that the number of employees who retired exceeded the number of estimated retirements at the beginning of the year, and that the increases in salaries and pensions for retired
personnel exceeded the increases estimated at the beginning of the year.



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In 2009, the net actuarial loss of Ps. 5,872,557 is comprised of (i) an actuarial gain of Ps. 4,328,439
resulting from the behavior in the plan assets due to increases in the value of the equity instruments, and in fixed-yield instruments due to variances in the reference rates, and (ii) an actuarial loss of Ps. 10,200,996, due primarily to the
fact that the number of employees who retired exceeded the number of estimated retirements at the beginning of the year, and that the increases in salaries and pensions for retired personnel exceeded the increases estimated at the beginning of the
year.

At December 31, 2010, 46.4% (45.9% in 2009) of plan assets were represented by fixed-yield instruments and the remaining 53.6%
(54.1% in 2009) was represented by variable-yield instruments.

e) In the case of Mexico (Telcel) and Ecuador, the net period cost of other
benefits for the years ended December 31, 2009 and 2010 was Ps. 50,551 and Ps. 46,477, respectively, for Mexico, and Ps.13,077 and Ps.8,706, respectively, for Ecuador.

f) For the rest of the countries where the Company operates and that do not have defined benefit plans or defined contribution plans, the Company makes contributions to the respective governmental social
security agencies, which are recognized in results of operations as they are incurred.

13. Accounts Payable and Accrued Liabilities

a) An analysis of the caption Accounts payable and accrued liabilities is as follows:



|                                      |  |               |             |  |                 |     |             |      |  |     |             | 
|------------------------------------- |  | ------------- | ----------- |  | --------------- | --- | ----------- | ---- |  | --- | ----------- | 
|                                      |  | At January 1, |             |  | At December 31, |    
|                                      |  | 2009          |             |  | 2009            |     |             | 2010 | 
|Suppliers                             |  | Ps.           | 78,084,527  |  |                 | Ps. | 75,895,027  |      |  | Ps. | 79,306,314  | 
|Sundry creditors                      |  |               | 19,602,627  |  |                 |     | 19,476,554  |      |  |     | 25,752,651  | 
|Interest payable                      |  |               | 3,845,529   |  |                 |     | 2,805,329   |      |  |     | 4,928,705   | 
|Accrued expenses and other provisions |  |               | 15,935,986  |  |                 |     | 22,562,274  |      |  |     | 31,534,351  | 
|Guarantee deposits                    |  |               | 1,057,244   |  |                 |     | 1,263,674   |      |  |     | 1,311,837   | 
|Dividends payable                     |  |               | 944,118     |  |                 |     | 2,575,318   |      |  |     | 2,761,069   | 
|                                      |  |               |             |  |                 |     |             |      |  |     |             | 
|Total                                 |  | Ps.           | 119,470,031 |  |                 | Ps. | 124,578,176 |      |  | Ps. | 145,594,927 | 
|                                      |  |               |             |  |                 |     |             |      |  |     |             | 

b) An analysis of accrued expenses and other provisions at December 31, 2009 and 2010 is as follows:



|                                 |  |                           |            |          |                       |     |               |                      |  |     |              |  |  |                             |             |   |  |     |          |   |  |     |            | 
|-------------------------------- |  | ------------------------- | ---------- | -------- | --------------------- | --- | ------------- | -------------------- |  | --- | ------------ |  |  | --------------------------- | ----------- | - |  | --- | -------- | - |  | --- | ---------- | 
|                                 |  | Balance at January1,
2009 |            |          | Effect of translation |     |               | Increase of the year |  |     | Applications |  |  | Balance at December31,
2009 |            
|                                 |  |                           |            | Payments |                       |     | Cancellations |                      | 
|Direct employee benefits payable |  | Ps.                       | 5,086,068  |          |                       | Ps. | 459,866       |                      |  | Ps. | 7,837,276    |  |  | Ps.                         | (7,607,499  | ) |  | Ps. | (83,582  | ) |  | Ps. | 5,692,129  | 
|Asset retirement obligations     |  |                           | 1,777,317  |          |                       |     | 30,794        |                      |  |     | 1,848,499    |  |  |                             | (174,904    | ) |  |     |          |   |  |     | 3,481,706  | 
|Contingencies                    |  |                           | 9,072,601  |          |                       |     | 2,122,278     |                      |  |     | 4,579,335    |  |  |                             | (2,326,958  | ) |  |     | (58,817  | ) |  |     | 13,388,439 | 
|                                 |  |                           |            |          |                       |     |               |                      |  |     |              |  |  |                             |             |   |  |     |          |   |  |     |            | 
|                                 |  | Ps.                       | 15,935,986 |          |                       | Ps. | 2,612,938     |                      |  | Ps. | 14,265,110   |  |  | Ps.                         | (10,109,361 | ) |  | Ps. | (142,399 | ) |  | Ps. | 22,562,274 | 
|                                 |  |                           |            |          |                       |     |               |                      |  |     |              |  |  |                             |             |   |  |     |          |   |  |     |            | 



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##### Table of Contents

|                                 |  |                             |            |          |                       |     |               |                      |  |     |              |  |  |                             |            |   |  |     |          |   |  |     |            | 
|-------------------------------- |  | --------------------------- | ---------- | -------- | --------------------- | --- | ------------- | -------------------- |  | --- | ------------ |  |  | --------------------------- | ---------- | - |  | --- | -------- | - |  | --- | ---------- | 
|                                 |  | Balance at December31,
2009 |            |          | Effect 
oftranslation |     |               | Increase of the year |  |     | Applications |  |  | Balance atDecember 31, 2010 |           
|                                 |  |                             |            | Payments |                       |     | Cancellations |                      | 
|Direct employee benefits payable |  | Ps.                         | 5,692,129  |          |                       | Ps. | (137,127      | )                    |  | Ps. | 10,398,406   |  |  | Ps.                         | (7,146,085 | ) |  | Ps. | (55,170  | ) |  | Ps. | 8,752,153  | 
|Asset retirement obligations     |  |                             | 3,481,706  |          |                       |     | (41,959       | )                    |  |     | 1,583,676    |  |  |                             | (245,637   | ) |  |     | (96,377  | ) |  |     | 4,681,409  | 
|Contingencies                    |  |                             | 13,388,439 |          |                       |     | (206,161      | )                    |  |     | 5,912,733    |  |  |                             | (700,718   | ) |  |     | (293,504 | ) |  |     | 18,100,789 | 
|                                 |  |                             |            |          |                       |     |               |                      |  |     |              |  |  |                             |            |   |  |     |          |   |  |     |            | 
|                                 |  | Ps.                         | 22,562,274 |          |                       | Ps. | (385,247      | )                    |  | Ps. | 17,894,815   |  |  | Ps.                         | (8,092,440 | ) |  | Ps. | (445,051 | ) |  | Ps. | 31,534,351 | 
|                                 |  |                             |            |          |                       |     |               |                      |  |     |              |  |  |                             |            |   |  |     |          |   |  |     |            | 

14. Other Financial Assets and Liabilities

Fair value hierarchy

At December 31, 2009 and 2010, América Móvil had the
following financial instruments measured at fair value shown in the statement of financial position.

The Companys valuation techniques
used to determine and disclose the fair value of its financial instruments are based on the following hierarchy:

Level 1: Quoted prices
(unadjusted) in active markets for identical assets or liabilities;

Level 2: Variables other than quoted prices in Level 1 that are
observable for the asset or liability, either directly (prices) or indirectly (derived from prices); and

Level 3: Variables used for the
asset or liability that are not based on any observable market data (non-observable variables).



|                    |  |                                                |             |  |         |     |             |         |  |     |         |  |  |     |             | 
|------------------- |  | ---------------------------------------------- | ----------- |  | ------- | --- | ----------- | ------- |  | --- | ------- |  |  | --- | ----------- | 
|                    |  | Measurement of fair value at December 31, 2009 |            
|                    |  | Level 1                                        |             |  | Level 2 |     |             | Level 3 |  |     | Total   | 
|Assets              |  |                                                |             |  |         |     |             |         |  |     |         |  |  |     |             | 
|Derivatives         |  |                                                |             |  |         | Ps. | 13,087,956  |         |  |     |         |  |  | Ps. | 13,087,956  | 
|Pension plan assets |  | Ps.                                            | 189,601,994 |  |         |     |             |         |  | Ps. | 501,921 |  |  |     | 190,103,915 | 
|                    |  |                                                |             |  |         |     |             |         |  |     |         |  |  |     |             | 
|Total               |  | Ps.                                            | 189,601,994 |  |         | Ps. | 13,087,956  |         |  | Ps. | 501,921 |  |  | Ps. | 203,191,871 | 
|                    |  |                                                |             |  |         |     |             |         |  |     |         |  |  |     |             | 
|Liabilities         |  |                                                |             |  |         |     |             |         |  |     |         |  |  |     |             | 
|Debt                |  | Ps.                                            | 85,369,841  |  |         | Ps. | 192,572,670 |         |  |     |         |  |  | Ps. | 277,942,511 | 
|Derivatives         |  |                                                |             |  |         |     | 1,110,377   |         |  |     |         |  |  |     | 1,110,377   | 
|                    |  |                                                |             |  |         |     |             |         |  |     |         |  |  |     |             | 
|Total               |  | Ps.                                            | 85,369,841  |  |         | Ps. | 193,683,047 |         |  |     |         |  |  | Ps. | 279,052,888 | 
|                    |  |                                                |             |  |         |     |             |         |  |     |         |  |  |     |             | 



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##### Table of Contents

|                    |  |                                                |             |  |         |     |            |         |  |  |       |  |  |     |             | 
|------------------- |  | ---------------------------------------------- | ----------- |  | ------- | --- | ---------- | ------- |  |  | ----- |  |  | --- | ----------- | 
|                    |  | Measurement of fair value at December 31, 2010 |            
|                    |  | Level 1                                        |             |  | Level 2 |     |            | Level 3 |  |  | Total | 
|Assets              |  |                                                |             |  |         |     |            |         |  |  |       |  |  |     |             | 
|Derivatives         |  |                                                |             |  |         | Ps. | 5,004,483  |         |  |  |       |  |  | Ps. | 5,004,483   | 
|Pension plan assets |  | Ps.                                            | 208,972,566 |  |         |     |            |         |  |  |       |  |  |     | 208,972,566 | 
|                    |  |                                                |             |  |         |     |            |         |  |  |       |  |  |     |             | 
|Total               |  | Ps.                                            | 208,972,566 |  |         | Ps. | 5,004,483  |         |  |  |       |  |  | Ps. | 213,977,049 | 
|                    |  |                                                |             |  |         |     |            |         |  |  |       |  |  |     |             | 
|Liabilities         |  |                                                |             |  |         |     |            |         |  |  |       |  |  |     |             | 
|Debt                |  | Ps.                                            | 236,888,485 |  |         | Ps. | 90,050,880 |         |  |  |       |  |  | Ps. | 326,939,365 | 
|Derivatives         |  |                                                |             |  |         |     | 453,932    |         |  |  |       |  |  |     | 453,932     | 
|                    |  |                                                |             |  |         |     |            |         |  |  |       |  |  |     |             | 
|Total               |  | Ps.                                            | 236,888,485 |  |         | Ps. | 90,504,812 |         |  |  |       |  |  | Ps. | 327,393,297 | 
|                    |  |                                                |             |  |         |     |            |         |  |  |       |  |  |     |             | 

For the years ended December 31, 2009 and 2010, no transfers were made between Level 1 and Level 2 fair value
measurement techniques.

15. Deferred Revenues

An analysis of deferred revenues at January 1, 2009 and at December 31, 2009 and 2010 is as follows:



|                         |  |               |              |   |                 |     |              |      |  |     |              |  
|------------------------ |  | ------------- | ------------ | - | --------------- | --- | ------------ | ---- |  | --- | ------------ | -
|                         |  | At January 1, |              |   | At December 31, |    
|                         |  | 2009          |              |   | 2009            |     |              | 2010 | 
|At January 1             |  | Ps.           | 18,037,092   |   |                 | Ps. | 21,648,610   |      |  | Ps. | 28,937,442   |  
|Increase during the year |  |               | 194,456,732  |   |                 |     | 239,673,027  |      |  |     | 242,834,356  |  
|Recognized in income     |  |               | (192,234,952 | ) |                 |     | (232,751,486 | )    |  |     | (242,258,878 | )
|Effect of translation    |  |               | 1,389,738    |   |                 |     | 367,291      |      |  |     | (458,506     | )
|                         |  |               |              |   |                 |     |              |      |  |     |              |  
|                         |  |               | 21,648,610   |   |                 |     | 28,937,442   |      |  |     | 29,054,414   |  
|                         |  |               |              |   |                 |     |              |      |  |     |              |  
|Short-term               |  |               | 21,220,796   |   |                 |     | 23,475,052   |      |  |     | 25,064,230   |  
|Long-term                |  |               | 427,814      |   |                 |     | 5,462,390    |      |  |     | 3,990,184    |  
|                         |  |               |              |   |                 |     |              |      |  |     |              |  
|                         |  | Ps.           | 21,648,610   |   |                 | Ps. | 28,937,442   |      |  | Ps. | 29,054,414   |  
|                         |  |               |              |   |                 |     |              |      |  |     |              |  

Deferred revenues consist of revenues obtained for services that will be provided to customers within a certain period.
Deferred revenues are recognized in the statement of income when they are realized.



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##### Table of Contents

16. Debt

The Company's short- and long-term debt consists of the following:



|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|---------------- |  | ----------------------------------------------------------- |  | --------------------------------------------------------- |  | -------------------- | ---- |  | ----- | --- | ----------- | 
|                 |  |                                                             |  | At December 31, 2010                                      | 
|Currency         |  | Loan                                                        |  | Rate                                                      |  | Maturity from2011 to |      |  | Total |    
|U.S. dollars     |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | ECA credits (fixed rate)                                    |  | 2.52%                                                     |  |                      | 2017 |  |       | Ps. | 1,708,061   | 
|                 |  | ECA credits (floating rate)                                 |  | L +0.35%, L+0.39%, L + 0.75% & L + 1.50%                  |  |                      | 2019 |  |       |     | 17,832,081  | 
|                 |  | Fixed-rate notes                                            |  | 3.625% - 6.375%                                           |  |                      | 2040 |  |       |     | 114,308,303 | 
|                 |  | Lines of credit                                             |  | L + 0.25%-4.23% & 4.50%                                   |  |                      | 2014 |  |       |     | 13,515,748  | 
|                 |  | Leases                                                      |  | 7.00%-7.50% & RLR + 1.06                                  |  |                      | 2012 |  |       |     | 51,235      | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Subtotal U.S. dollars                                       |  |                                                           |  |                      |      |  |       |     | 147,415,428 | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|Euros            |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | ECA credits (fixed rate)                                    |  | 2.00%                                                     |  |                      | 2022 |  |       |     | 185,912     | 
|                 |  | Fixed-rate notes                                            |  | 3.75% and 4.75%                                           |  |                      | 2022 |  |       |     | 28,942,800  | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Euros                                              |  |                                                           |  |                      |      |  |       |     | 29,128,712  | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|Mexican pesos    |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Lines of credit                                             |  | TIIE + 0.60%                                              |  |                      | 2011 |  |       |     | 46,000      | 
|                 |  | Fixed-rate notes                                            |  | 4.10%-10.20%                                              |  |                      | 2037 |  |       |     | 41,474,529  | 
|                 |  | Floating-rate notes                                         |  | Cetes+0.55% & TIIE + -0.10%-1.50%                         |  |                      | 2016 |  |       |     | 37,100,000  | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Mexican pesos                                      |  |                                                           |  |                      |      |  |       |     | 78,620,529  | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|Reais            |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Lines of credit                                             |  | 4.50%, 8.78% and 9.20% & LTIR+4.5%                        |  |                      | 2020 |  |       |     | 2,960,139   | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Brazilian reais                                    |  |                                                           |  |                      |      |  |       |     | 2,960,139   | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|Colombian pesos  |  | Bonds                                                       |  | CPI + 6.8% & 7.59%                                        |  |                      | 2016 |  |       |     | 4,002,864   | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Colombian pesos                                    |  |                                                           |  |                      |      |  |       |     | 4,002,864   | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|Other currencies |  | Bonds                                                       |  | 1.49% - 6.41%                                             |  |                      | 2039 |  |       |     | 23,207,510  | 
|                 |  | Leases                                                      |  | 2.75% - 8.97%                                             |  |                      | 2027 |  |       |     | 913,536     | 
|                 |  | Lines of credit                                             |  | L + 0.33%, BAR +0.40% & 0.425%, Badlarrate & 4.76%-19.45% |  |                      | 2014 |  |       |     | 16,851,438  | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Subtotal other currencies                                   |  |                                                           |  |                      |      |  |       |     | 40,972,484  | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Total debt                                                  |  |                                                           |  |                      |      |  |       |     | 303,100,156 | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Less: Short-term debt and current portion of long-term debt |  |                                                           |  |                      |      |  |       |     | 9,039,204   | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 
|                 |  | Long-term debt                                              |  |                                                           |  |                      |      |  |       | Ps. | 294,060,952 | 
|                 |  |                                                             |  |                                                           |  |                      |      |  |       |     |             | 



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|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|---------------- |  | ----------------------------------------------------------- |  | ------------------------------------------------------------- |  | -------------------- | ---- |  | ----- | --- | ----------- | 
|                 |  |                                                             |  | At December 31, 2009                                          |  |                      |      |  |       |    
|Currency         |  | Loan                                                        |  | Rate                                                          |  | Maturity from2010 to |      |  | Total |    
|U.S. dollars     |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | ECA credits (fixed rate)                                    |  | 2.71% - 3.20%                                                 |  |                      | 2010 |  |       | Ps. | 169,607     | 
|                 |  | ECA credits (floating rate)                                 |  | L +0.34%, L+0.346%, L + 0.75% & L + 1.50%                     |  |                      | 2019 |  |       |     | 11,769,032  | 
|                 |  | Fixed-rate notes                                            |  | 4.75% - 6.375%                                                |  |                      | 2037 |  |       |     | 80,969,359  | 
|                 |  | Lines of credit                                             |  | L + 0.20%-5.14% & 3.317%-7.50%                                |  |                      | 2014 |  |       |     | 71,921,028  | 
|                 |  | Leases                                                      |  | 7.95% - 8.75% & RLR + 2.0%                                    |  |                      | 2012 |  |       |     | 159,266     | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal U.S. dollars                                       |  |                                                               |  |                      |      |  |       |     | 164,988,292 | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|Euros            |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | ECA credits (fixed rate)                                    |  | 2.00%                                                         |  |                      | 2022 |  |       |     | 237,921     | 
|                 |  | ECA credits (floating rate)                                 |  | E(5)+ 0.70%                                                   |  |                      | 2016 |  |       |     | 7,040,725   | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Euros                                              |  |                                                               |  |                      |      |  |       |     | 7,278,646   | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|Mexican pesos    |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Lines of credit                                             |  | 69CPI69CPI + %-5.757% - -0.09% & -0.05%                       |  |                      | 2010 |  |       |     | 4,200,000   | 
|                 |  | Fixed-rate notes                                            |  | 4.1% - 10.20%                                                 |  |                      | 2037 |  |       |     | 46,013,149  | 
|                 |  | Floating-rate notes                                         |  | Cetes+0.55, 0.88 & 1.10 & TIIE + - 0.02%-1.25%                |  |                      | 2016 |  |       |     | 26,500,000  | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Mexican pesos                                      |  |                                                               |  |                      |      |  |       |     | 76,713,149  | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|Reais            |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Lines of credit                                             |  | 4.50%, 8.78% y 9.20%& LTIR+4.5% & IDC + 1.296%, 1.582 & 4.85% |  |                      | 2017 |  |       |     | 5,152,140   | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Brazilian reais                                    |  |                                                               |  |                      |      |  |       |     | 5,152,140   | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|Colombian pesos  |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Bonds                                                       |  | CPI + 6.8% - 7.50% & 7.59%                                    |  |                      | 2016 |  |       |     | 5,749,270   | 
|                 |  | Lines of credit                                             |  | FTD+ 3.766 & 4.894%                                           |  |                      | 2013 |  |       |     | 360,830     | 
|                 |  | Leases                                                      |  | FTD+5.160%, 5.427% & 6.232%                                   |  |                      | 2014 |  |       |     | 315,171     | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Colombian pesos                                    |  |                                                               |  |                      |      |  |       |     | 6,425,271   | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|Other currencies |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Bonds                                                       |  | 1.489%, 2.95% & 6.406%                                        |  |                      | 2039 |  |       |     | 4,546,906   | 
|                 |  | Leases                                                      |  | 2.75% - 6.45%                                                 |  |                      | 2012 |  |       |     | 1,133,455   | 
|                 |  | Lines of credit                                             |  | 1.02%-19.45% & L+ 0.33% & BAR + 0.425%                        |  |                      | 2027 |  |       |     | 11,003,820  | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal other currencies                                   |  |                                                               |  |                      |      |  |       |     | 16,684,181  | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Total debt                                                  |  |                                                               |  |                      |      |  |       |     | 277,241,679 | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Less: Short-term debt and current portion of long-term debt |  |                                                               |  |                      |      |  |       |     | 44,967,190  | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 
|                 |  | Long-term debt                                              |  |                                                               |  |                      |      |  |       | Ps. | 232,274,489 | 
|                 |  |                                                             |  |                                                               |  |                      |      |  |       |     |             | 



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##### Table of Contents

|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|---------------- |  | ----------------------------------------------------------- |  | --------------------------------------------- |  | -------------------- | ---- |  | ----- | --- | ----------- | 
|                 |  |                                                             |  | At January 1, 2009                            | 
|Currency         |  | Loan                                                        |  | Rate                                          |  | Maturity from 2009to |      |  | Total |    
|U.S. dollars     |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | ECA credits (fixed rate)                                    |  | 2.71%, 3.2%, 3.93% & 6.56%                    |  |                      | 2013 |  |       | Ps. | 4,121,020   | 
|                 |  | ECA credits (floating rate)                                 |  | L + 0.30%, L + 0.75%, L + 0.875% & L + 1.50%  |  |                      | 2018 |  |       |     | 19,455,560  | 
|                 |  | Syndicated loans                                            |  | L + 0.20%, L + 0.25% & L + 0.325%             |  |                      | 2013 |  |       |     | 74,460,650  | 
|                 |  | Fixed-rate notes                                            |  | 4.125%, 4.75%, 5.5% & 6.375%                  |  |                      | 2037 |  |       |     | 74,187,922  | 
|                 |  | Lines of credit                                             |  | L + 0.35 - L + 5.5%, 4.5% & 6.71%             |  |                      | 2014 |  |       |     | 37,586,566  | 
|                 |  | Leases                                                      |  | L + 2.9%, L + 3.16% & 3.35% - 8.75%           |  |                      | 2012 |  |       |     | 692,525     | 
|                 |  | Suppliers                                                   |  | L + 1.5%, 3.0% & 5.2%                         |  |                      | 2013 |  |       |     | 397,495     | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal U.S. dollars                                       |  |                                               |  |                      |      |  |       |     | 210,901,738 | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|Euros            |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | ECA credits (fixed rate)                                    |  | 2.0%                                          |  |                      | 2022 |  |       |     | 271,881     | 
|                 |  | ECA credits (floating rate)                                 |  | E + 0.70%                                     |  |                      | 2016 |  |       |     | 4,979,233   | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Euros                                              |  |                                               |  |                      |      |  |       |     | 5,251,114   | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|Mexican pesos    |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Lines of credit                                             |  | TIIE + 0.05%, TIIE + 0.09% & TIIE + 0.24%     |  |                      | 2010 |  |       |     | 7,300,000   | 
|                 |  | Fixed-rate notes                                            |  | 8.11% - 10.45%                                |  |                      | 2036 |  |       |     | 39,860,964  | 
|                 |  | Floating-rate notes                                         |  | C+0.55% -C+ 0.9%, TIIE + 0.02% - TIIE + 0.10% |  |                      | 2013 |  |       |     | 17,434,917  | 
|                 |  | Commercial paper                                            |  | 8.18% - 8.53%                                 |  |                      | 2009 |  |       |     | 5,500,000   | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Mexican pesos                                      |  |                                               |  |                      |      |  |       |     | 70,095,881  | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|Reais            |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | ECA credits (fixed rate)                                    |  | 4.85%                                         |  |                      | 2010 |  |       |     | 1,178       | 
|                 |  | Floating-rate notes                                         |  | IDC + 2.52%                                   |  |                      | 2009 |  |       |     | 2,317,210   | 
|                 |  | Lines of credit                                             |  | IDC + 3.77% -12.91% &9.25%                    |  |                      | 2014 |  |       |     | 3,760,743   | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Brazilian reais                                    |  |                                               |  |                      |      |  |       |     | 6,079,131   | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|Colombian pesos  |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Lines of credit                                             |  | FTD + 3.77% - 12.91%                          |  |                      | 2013 |  |       |     | 405,693     | 
|                 |  | Leases                                                      |  | FTD + 5.16%                                   |  |                      | 2014 |  |       |     | 348,872     | 
|                 |  | Bonds                                                       |  | CPI + 6.8% -7.50% and 7.59%                   |  |                      | 2016 |  |       |     | 5,430,792   | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal Colombian pesos                                    |  |                                               |  |                      |      |  |       |     | 6,185,357   | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|Other currencies |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Bonds                                                       |  | 6.41%                                         |  |                      | 2012 |  |       |     | 538,602     | 
|                 |  | Leases                                                      |  | 3.90%, 6.45% &14.0%                           |  |                      | 2027 |  |       |     | 1,075,785   | 
|                 |  | Lines of credit                                             |  | 3.19% - 14.75%                                |  |                      | 2016 |  |       |     | 10,588,330  | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Subtotal other currencies                                   |  |                                               |  |                      |      |  |       |     | 12,202,717  | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Total debt                                                  |  |                                               |  |                      |      |  |       |     | 310,715,938 | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Less: Short-term debt and current portion of long-term debt |  |                                               |  |                      |      |  |       |     | 68,358,159  | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 
|                 |  | Long-term debt                                              |  |                                               |  |                      |      |  |       | Ps. | 242,357,779 | 
|                 |  |                                                             |  |                                               |  |                      |      |  |       |     |             | 

Legend:

L = LIBOR
or London Interbank Offered Rate

TIIE = Mexican Weighted Interbank Interest Rate

FTD = Fixed-term deposits

CPI = Consumer price index

E = Euribor or Euro Interbank Offered Rate

RLR
= Reference Liability Rate



LTIR = Long-term Interest Rate

Cetes = Mexican Treasury Certificates

BAR =Bankers and Financial Institutions Association Rate

IDC = Interbank Deposit Certificate

Baldar Rate = Interest rate paid in
Argentina on fixed-term deposits of more than one million pesos

Export Credit Agreement



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Except for the fixed-rate notes, interest rates on the Company's debts are subject to variances in
international and local rates. The Companys weighted average cost of borrowed funds at December 31, 2009 and 2010 was approximately 4.7% and 5.2%, respectively.%.

Such rate does not include commissions or the reimbursements for Mexican tax withholdings (typically a tax rate of 4.9%) that the Company must make to international lenders. In general, fees on financing
transactions add ten basis points to financing costs.

An analysis of the Company's short-term debt at January 1, 2009 and at
December 31, 2009 and 2010 is as follows:



|                               |  |               |            |   |                 |     |            |      |  |     |           |  
|------------------------------ |  | ------------- | ---------- | - | --------------- | --- | ---------- | ---- |  | --- | --------- | -
|                               |  | At January 1, |            |   | At December 31, |    
|                               |  | 2009          |            |   | 2009            |     |            | 2010 | 
|Senior notes                   |  | Ps.           | 6,742,073  |   |                 | Ps. | 14,194,427 |      |  |     |           |  
|Domestic senior notes          |  |               | 13,734,917 |   |                 |     | 9,000,000  |      |  | Ps. | 4,500,000 |  
|Lines of credit used           |  |               | 33,498,319 |   |                 |     | 13,355,740 |      |  |     | 600,416   |  
|Commercial paper               |  |               | 5,500,000  |   |                 |     |            |      |  |     |           |  
|Other loans                    |  |               | 1,529,451  |   |                 |     | 312,029    |      |  |     | 234,182   |  
|                               |  |               |            |   |                 |     |            |      |  |     |           |  
|Total                          |  | Ps.           | 61,004,760 |   |                 | Ps. | 36,862,196 |      |  | Ps. | 5,334,598 |  
|                               |  |               |            |   |                 |     |            |      |  |     |           |  
|Weighted average interest rate |  |               | 6.9        | % |                 |     | 4.8        | %    |  |     | 5.3       | %
|                               |  |               |            |   |                 |     |            |      |  |     |           |  

An analysis of maturities of the Company's long-term debt is as follows:



|                    |  |        |             | 
|------------------- |  | ------ | ----------- | 
|Year                |  | Amount |            
|2012                |  | Ps.    | 22,680,878  | 
|2013                |  |        | 21,962,635  | 
|2014                |  |        | 35,262,291  | 
|2015                |  |        | 34,784,121  | 
|2016                |  |        | 16,215,495  | 
|2017 and thereafter |  |        | 163,155,532 | 
|                    |  |        |             | 
|Total               |  | Ps.    | 294,060,952 | 
|                    |  |        |             | 

Senior Notes - At December 31, 2010, the Company has senior notes issued in U.S. dollars of USD 9,250 million (Ps.
114,308 million) maturing from 2014 to 2040. The Company also had senior notes issued in Mexican pesos of Ps. 78,575 million maturing in 2011 and 2037. In 2010, América Móvil issued eleven new senior notes as follows: Ps.
4,600 million and Ps. 7,000 million (in Mexican pesos); 743 million investment units (UDIs) (equivalent to Ps. 3,301 Mexican pesos); USD 750 million, USD 2,000 million and USD 1,250 million; 5 million UFs (Unidades de
Fomento) (equivalent to 105,460 Chilean pesos); 230 million Swiss francs; 750 million and 1,000 million Euros; and 650 million pounds sterling.

All senior notes issued by América Móvil are guaranteed by Telcel.



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Lines of credit granted or guaranteed by export credit agencies - The Company has medium- and long-term
financing programs for the purchase of equipment, whereby certain institutions, to promote exports, provide financial support to purchase export equipment from their respective countries. The outstanding balance under these plans at
December 31, 2010 is approximately Ps. 19,726 million.

In addition to the above, the Company has two commercial paper programs
authorized by the Mexican Banking and Securities Commission (CNBV) for a total amount of Ps. 20,000 million.

Domestic notes

At December 31, 2009, debt under domestic senior notes amounts to to Ps. 55,141 million. In general, these issuances bear a fixed or floating
interest rate established as a percentage of the Mexican weighted interbank interest rate (TIIE). At December 31, 2010, debt under domestic notes aggregates to Ps. 61,203 million. In general, these issuances bear a fixed or floating interest
rate established as a percentage of the Mexican weighted interbank interest rate (TIIE).

Early payment of debt

In 2010, the Company made payments and advance payments against its debt with third parties of approximately Ps. 23 billion.

General

At December 31, 2010, the
Company has a number of bank facilities for approximately Ps. 33,373 million unused

(USD 2,701 million).

The Company is obligated to comply with certain financial and operating covenants under the loan agreements. These covenants limit, in certain cases, the
ability of the Company or the guarantor to: pledge assets, carry out certain types of mergers, sell all or substantially all of its assets, and sell control over Telcel. As of December 31, 2010, the Company is in compliance with all covenants
without exception.

At December 31, 2010, approximately 65% of América Móvil's total outstanding consolidated debt is
guaranteed by Telcel.

Subsequent events

On February 2, 2011, América Móvil made a private tender offer to exchange outstanding bonds issued by Telmex with maturities in 2015 and 2019 for new bonds issued by América
Móvil. The offer expired on March 3, 2011. As a result of the offer, on March 8, 2011, USD 243.6 million of Telmex bonds maturing in 2015 and USD 122.6 million of Telmex bonds maturing in 2019 were exchanged for bonds
issued by América Móvil



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17. Commitments and Contingencies

At December 31, 2009 and 2010, the Company has entered into several lease agreements with related parties and third parties for the buildings where is offices are located (as a lessee), as well as
with the owners of premises where the Company has installed radio bases. The lease agreements generally have terms from one to fourteen years.

An analysis of the minimum rental payments for the next five years is shown below. In some cases, rental amounts are increased each year based on the
National Consumer Price Index.

At December 31, 2009, the Company has the following non-cancelable commitments under finance and finance
leases:



|                                            |  |                |           |   |                  |     |            | 
|------------------------------------------- |  | -------------- | --------- | - | ---------------- | --- | ---------- | 
|Year ended December 31                      |  | Finance leases |           |   | Operating leases |    
|2010                                        |  | Ps.            | 762,458   |   |                  | Ps. | 4,314,378  | 
|2011                                        |  |                | 407,219   |   |                  |     | 4,050,849  | 
|2012                                        |  |                | 181,893   |   |                  |     | 3,331,981  | 
|2013                                        |  |                |           |   |                  |     | 3,009,501  | 
|2014                                        |  |                |           |   |                  |     | 2,130,224  | 
|2015 and thereafter                         |  |                |           |   |                  |     | 3,526,184  | 
|                                            |  |                |           |   |                  |     |            | 
|Total                                       |  |                | 1,351,570 |   |                  | Ps. | 20,363,117 | 
|                                            |  |                |           |   |                  |     |            | 
|Less: interest                              |  |                | (60,199   | ) |                  |     |            | 
|                                            |  |                |           |   |                  |     |            | 
|Present value of net minimum lease payments |  |                | 1,291,371 |   |                  |     |            | 
|Less current portion                        |  |                | (716,481  | ) |                  |     |            | 
|                                            |  |                |           |   |                  |     |            | 
|Long-term obligations                       |  | Ps.            | 574,890   |   |                  |     |            | 
|                                            |  |                |           |   |                  |     |            | 

At December 31, 2010, the Company has the following non-cancelable commitments under finance and operating
leases:



|                                            |  |                |          |   |                  |     |            | 
|------------------------------------------- |  | -------------- | -------- | - | ---------------- | --- | ---------- | 
|Year ended December 31                      |  | Finance leases |          |   | Operating leases |    
|2011                                        |  | Ps.            | 458,867  |   |                  | Ps. | 4,005,998  | 
|2012                                        |  |                | 239,546  |   |                  |     | 3,729,428  | 
|2013                                        |  |                | 62,560   |   |                  |     | 3,088,673  | 
|2014                                        |  |                |          |   |                  |     | 2,505,264  | 
|2015                                        |  |                |          |   |                  |     | 1,824,615  | 
|2016 and thereafter                         |  |                |          |   |                  |     | 3,690,916  | 
|                                            |  |                |          |   |                  |     |            | 
|Total                                       |  |                | 760,973  |   |                  | Ps. | 18,844,894 | 
|                                            |  |                |          |   |                  |     |            | 
|Less: interest                              |  |                | (25,567  | ) |                  |     |            | 
|                                            |  |                |          |   |                  |     |            | 
|Present value of net minimum lease payments |  |                | 735,406  |   |                  |     |            | 
|Less current portion                        |  |                | (441,140 | ) |                  |     |            | 
|                                            |  |                |          |   |                  |     |            | 
|Long-term obligations                       |  | Ps.            | 294,266  |   |                  |     |            | 
|                                            |  |                |          |   |                  |     |            | 



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Rent expense for the years ended December 31, 2009 and 2010 was Ps. 10,788,990 and Ps. 8,318,926,
respectively.

b) Commitments

At December 31, 2010, there were commitments in certain subsidiaries for the acquisition of equipment for incorporation into their GSM and 3G
networks for an amount up to approximately USD 4,511 million (approximately Ps. 55,743 million). The estimated completion period for these projects in progress ranges from 3 to 6 months, depending on the type of project and the equipment
supplier, as well as the type of asset.

c) Contingencies

América Móvil

NatTel

NatTel, LLC (NatTel) has sued the Company and other parties in the U.S. in a Connecticut state court in relation to a transaction conducted in
August 2007 through which the Company purchased shares of Oceanic Digital Jamaica, Ltd. (ODJ) from ODC St. Lucia, a subsidiary of Oceanic Digital Communications, Ltd. (ODC), in which NatTel is a minority shareholder. Under
the agreement governing the transaction, the parties placed approximately USD 15 million (approximately Ps. 185 million) in an escrow account with The Bank of New York, and the remaining purchase payments were covered by certain inter-company
debt owed by ODJ to the majority shareholders in ODC: SAC Capital Associates, LLC and SAC Capital Advisors (collectively, SAC).

In this suit, NatTel alleges that the transaction was intended to deprive NatTel of its fair share of the proceeds from the sale, and that it was
structured in such a way so that SAC received the all the money from the sale. NatTel is seeking an order allowing it to receive the amount placed in escrow. On February 7, 2008, the Company filed a motion for dismissal due to lack of
jurisdiction and technical errors in the notice.

Concurrently with the Connecticut case, NatTel has also initiated an adversary proceeding in
connection with its bankruptcy case in the United States Bankruptcy Court for the District of Connecticut (Bankruptcy Court) against many of the parties of the Connecticut action, including the Company.

On October 22, 2010, the Company entered into a settlement agreement with NatTel through which the parties resolved all of the claims asserted
against it in the Connecticut action and the adversary proceeding. This agreement was approved by the Bankruptcy Court on November 23, 2010 and it became effective on December 8, 2010. On December 13, 2010, pursuant to the settlement
agreement, NatTel voluntarily dropped both the Connecticut action and the adversary proceeding and as a result, this contingency has been duly terminated.



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Cempresa

In 2008, Centro Empresarial Cempresa, S.A. and Conecel Holding Limited (collectively, the Plaintiffs) filed suit in the Supreme Court of the State of New York against numerous defendants
including the Company, certain of its affiliates and subsidiaries, and two members of its Board of Directors (collectively, the Defendants), asserting breach of contract, fraud, fraudulent inducement, unjust enrichment and a claim for
accounting. In 2000, the Plaintiffs sold a majority of their shares in the Companys Ecuadorian subsidiary Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel) to a subsidiary of Teléfonos de México, S.A.B. de
C.V. (Telmex). Telmexs holdings in Conecel were transferred to the Companys as part of the spin-off from Telmex in 2000 and are currently held by one of its subsidiaries. The Plaintiffs kept a minority of the shares of
Conecel.

The Plaintiffs asserted that one of their exit strategies with respect to the minority shares was a right to negotiate the swap of
Conecel shares for shares in the Company. The Plaintiffs contended in the lawsuit that the Defendants wrongfully deprived them of this share swap and they sought the alleged value of the Companys shares they claimed they would have
received, which the Plaintiffs asserted amounted to over USD 900 million (approximately Ps. 11,121 million). The Plaintiffs also sought punitive damages and asserted that the Defendants purposefully misrepresented the value of
Plaintiffs minority shares to try to prevent a share swap. In 2003, the Plaintiffs voluntarily sold their minority shares to the Defendants, executing comprehensive releases as part of the sale.

The Defendants filed a motion to dismiss the case, asserting numerous defenses, including statute of limitations, release, lack of damages, personal
jurisdiction for certain defendants, and the impossibility of adding contract cause of action to a fraud cause of action. In December 2008, the related court denied the motion to dismiss and the Defendants appealed. The appellate court stayed the
case in the trial court until the appeal is ruled on.

On June 3, 2010, the Appellate Division of the New York Supreme Court reversed the
ruling originally handed down by the court in 2008 and ordered that the case be dismissed in its entirety. In a lengthy opinion, three justices of the Appellate Division ruled to reverse the original court order and to dismiss the case, holding that
the broad release specifically disclaimed Plaintiffs right to file a suit, and that the allegations of fraudulent inducement were not sufficient, on the face of the complaint, to invalidate the release.

Because there was a two-justice dissent in the Appellate Division, the Plaintiffs have an automatic right to appeal in the New York Court of Appeals. The
Plaintiffs have exercised this right of appeal, which

currently pending resolution. The Company has made no provisions in the accompanying
financial statements for this potential liability.



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Telcel

COFECO - Substantial market power probes

Since December 2007, the Mexican Fair
Trade Commission (Comisión Federal de Competencia or COFECO) has been conducting a substantial probe into whether any of Mexicos operators enjoy substantial market power in the mobile termination (interconnection)
market over calls made under the local, domestic and international calling party pays system. COFECO has published its preliminary findings in which it has determined that each cell phone operator, including Radiomóvil Dipsa, S.A. de C.V.
(Telcel), enjoys substantial influence in the market for mobile termination to their own networks.

Those parties that may be
interested have the opportunity to submit information for COFECOs review before the agency issues its final report on the matter. Telcel has provided extensive information to COFECO for its probe, but the Company is unable to predict when
COFECO will issue a final report or whether it will modify its preliminary findings.

In April 2008, COFECO started up another probe, which
was initiated by an alleged Telcel subscriber (who in fact was an employee of another mobile operator), relating to whether Telcel enjoys substantial market power in the nationwide market for voice and data services. COFECO issued a final ruling on
this investigation in February 2010, finding that Telcel does indeed enjoy substantial market power in the nationwide market for mobile telephone services. In February 2010, Telcel filed an administrative proceeding with the COFECO and COFECO denied
the motion for review of the administrative proceeding. Telcel then filed an appeal for relief (amparo indirecto) with an administrative judge against the rejection of the administrative proceeding and against the issuance, subscription and
publication of the COFECO ruling. Resolution of this appeal is pending.

Under Mexicos Federal Antitrust Law and the Mexican
Telecommunications Law, should COFECO ultimately find that an operator enjoys substantial market power over another operator, the Federal Telecommunications Commission (Comisión Federal de Telecomunicaciones or COFETEL) may
impose on that operator specific regulations with respect to tariffs, quality of service and information in the specific market in which the operator was found to have substantial market power. The Company is unable to predict what regulatory steps
might be taken in response to the COFECOs rulings. COFETEL has stated publicly that specific regulations will be issued during the second quarter of 2011.



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COFECOProbe into monopolistic practices

COFECO launched four separate administrative proceedings against Telcel for alleged monopolistic practices. The first two concerned alleged actions by
certain distributors of Telcel in relation to the purchase and sale of cellular phones from and to third parties. In each of these probes, COFECO determined that Telcel engaged in anti-competitive behavior, and the agency imposed fines totaling Ps.
6.7 million and ordered that Telcels cease the alleged monopolistic practices immediately. Telcel has challenged COFECOs findings and fines in the courts and no final ruling in this regard has been issued.

The third proceeding concerned certain exclusivity clauses in connection with agreements executed with content providers. In this probe, COFECO found
that Telcel engaged in anti-competitive practices and ordered that the exclusivity clauses in question be removed from the relevant content agreements. No fines or penalties were imposed on Telcel. Telcel later unsuccessfully challenged
COFECOs ruling, which has now become final and non-appealable. Telcel has complied with the removal of the exclusivity clauses from the relevant content agreements.

The fourth probe concerns alleged monopolistic practices in the mobile termination (interconnection) market. On April 15, 2011, COFECO notified Telcel of a ruling whereby it levied a fine of Ps.
11,989 million for alleged monopolistic practices. COFECO states that the rates Telcel offers its own callers (on-net calls) are lower than the mobile termination rate Telcel charges other carriers, which prevents said carriers from being able
to provide similar pricing to their customers. Telcel disputes this conclusion. As of the date of the accompanying financial statements, the Company and Telcel are evaluating the scope and legal grounds of the ruling and will exercise any and all
legal actions and/or means of defense available to challenge it. The Company has made no provisions in the accompanying financial statements for these potential liabilities.

Mobile termination rates

Under the Calling Party Pays system, when a customer of
one operator (mobile or fixed) places a local or long-distance call to a customer of another operator, the first operator pays the second a fee, which is referred to as a mobile termination rate.

Under Mexican law, mobile termination rates are negotiated between operators. However, Telcel has not always been able to reach an agreement on the
annual mobile termination rates with certain operators, and these operators have sought the intervention of COFETEL to set the applicable mobile termination rates.

Since 2005 there has been extensive controversy in Mexico concerning mobile termination rates. The principal stages in the controversy, as it relates to mobile termination with Telcel, are summarized
below.



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| |  |  | December 2004 Agreement. In December 2004, most Mexican telecommunications operators had agreed on mobile termination rates set for the years
2005 through 2007. The agreement provided for annual reductions of 10%. The following are the mobile termination rates agreed on in December 2004:
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | January 1, 2005 to December 31, 2005: $1.71 Mexican pesos per minute or portion thereof;
| | - |  | ----------------------------------------------------------------------------------------



| |  |  | January 1, 2006 to December 31, 2006: $1.54 Mexican pesos per minute or portion thereof; and
| | - |  | --------------------------------------------------------------------------------------------



| |  |  | January 1, 2007 to December 31, 2007: $1.34 per minute or portion thereof.
| | - |  | --------------------------------------------------------------------------



| |  |  | August 2006 COFETEL Resolutions. Axtel, independently, and Avantel and Alestra, jointly, initiated proceedings with COFETEL to have COFETEL set
the mobile termination rates between them and Telcel under the calling party pays system in local mobile service networks.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

As a result of these proceedings, on August 31, 2006, COFETEL issued two resolutions (the Axtel Resolution and the Avantel/Alestra Resolution) that set the local mobile
termination rates payable by the two carriers to Telcel for the years 2005 through 2010, as follows:



| |  |  | January 1 to December 31, 2005: $1.71 Mexican pesos per minute;
| | - |  | ---------------------------------------------------------------



| |  |  | January 1 to September 30, 2006: $1.54 Mexican pesos per minute;
| | - |  | ----------------------------------------------------------------



| |  |  | October 1, 2006 to December 31, 2007: $1.23 Mexican pesos per minute;
| | - |  | ---------------------------------------------------------------------



| |  |  | January 1 to December 31, 2008: $1.12 Mexican pesos per minute;
| | - |  | ---------------------------------------------------------------



| |  |  | January 1 to December 31, 2009: $1.00 Mexican pesos per minute; and
| | - |  | -------------------------------------------------------------------



| |  |  | January 1 to December 31, 2010: $0.90 Mexican pesos per minute.
| | - |  | ---------------------------------------------------------------

Several of these fees were lower than the fees Telcel had agreed on with other operators.

In addition, COFETEL ruled that, starting in 2007, mobile termination rates would be determined by adding the total
seconds of all completed calls and rounding up to the next minute, rather than by rounding each call up to the next minute, before calculating the total use of the network. In order to mitigate the effects of this change on Telcel, COFETEL
authorized Telcel to collect a surcharge of 25% in 2007, 18% in 2008 and 10% in 2009 over the mobile termination rates billed to Axtel, Avantel y Alestra. Telcel challenged the Axtel Resolution and the Avantel/Alestra Resolution.



| |  |  | Challenges to Avantel/Alestra Resolution. Telcel challenged COFETELs August 2006 Avantel and Alestra Resolution on mobile termination
rates between the two carriers and Telcel. In November 2009, the competent court ruled that COFETEL was not empowered to add elements to the controversy set forth in the proceedings and could not issue resolutions on matters which were not
originally requested (i.e., mobile termination rates for the years 2008 to 2010). Consequently, Telcel won the appeal and the ruling issued by COFETEL is now null and void. COFETEL was ordered to issue a new ruling establishing mobile termination
rates only for the years 2005 to 2007. However, the courts ruling was silent with regard to the analysis and assessment of several of the acts challenged by Telcel. Accordingly, in December 2009 Telcel challenged the ruling before the
competent courts. COFETEL also challenged the ruling. Avantel joined the two challenges through a joinder of appeal. Resolution of these challenges is pending. This case is now to be resolved by the Supreme Court of Justice.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Challenges to Axtel Resolution, December 2007 Judicial Decision and January 2008 COFETEL Resolution. In September 2006, Telcel began a judicial
relief proceeding (amparo) challenging the ruling handed down by COFETEL on mobile termination rates between Axtel and Telcel. In December 2007, the district court overruled the ruling handed down by COFETEL in August 2006 regarding the
disagreement related to mobile termination rates initated by Axtel, and directed COFETEL to issue a new
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | resolution covering solely the periods from 2005 through 2007. In January 2008, as directed by the court, COFETEL issued a resolution establishing mobile termination rates between Telcel and
Axtel for the period from 2005 through 2007 in the same terms contained in the COFETELs August 2006 resolution. Telcel challenged this resolution with regard to the rates applicable for that period. In October 2009, the court ruled against
Telcel finding that, among other aspects, the costs model used by COFETEL to calculate mobile termination rates had been appropriate and that the mobile termination rates in question should therefore be as follows:
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | January 1 to December 31, 2005: $ 0.71 per minute;
| | - |  | --------------------------------------------------



| |  |  | January 1 to December 31, 2006: $ 0.74 per minute; and
| | - |  | ------------------------------------------------------



| |  |  | January 1 to December 31, 2007: $ 0.78 per minute.
| | - |  | --------------------------------------------------

Both Telcel and COFETEL challenged the ruling. Axtel joined the two challenges through a joinder of appeal. This case is now to be
resolved by the Supreme Court of Justice (Suprema Corte de Justicia).



| |  |  | December 2006 Agreements. In the fourth quarter of 2006, with regard to the implementation of the National Calling Party Pays
system, most industry operators (excluding Axtel, Avantel and other minor operators) agreed on the mobile termination rates for local and long-distance (national and international) calls made by mobile network users for the years 2006 through 2010.
These agreements established the following continued reductions in mobile termination rates:
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | January 1 to December 31, 2006: $1.54 per minute;
| | - |  | -------------------------------------------------



| |  |  | January 1 to December 31, 2007: $1.34 per minute;
| | - |  | -------------------------------------------------



| |  |  | January 1 to December 31, 2008: $1.21 per minute;
| | - |  | -------------------------------------------------



| |  |  | January 1 to December 31, 2009: $1.09 per minutes; and
| | - |  | ------------------------------------------------------



| |  |  | January 1 to December 31, 2010: $1.00 per minute.
| | - |  | -------------------------------------------------



| |  |  | 2008 Proceedings Involving Axtel. In December 2007 and March 2008, Axtel initiated proceedings with COFETEL to establish mobile termination
rates for the years from 2008 through 2011. In 2008, before COFETEL issued a resolution, Axtel filed an administrative review proceeding with the Mexican Ministry of Communications and Transportation (SCT). Axtel contended that, by
failing to issue a resolution on mobile termination rates for 2008 through 2011, COFETEL had refused to act (denial by default). Through the administrative review proceeding, Axtel requested that the SCT review this denial by default.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In September 2008, SCT issued a resolution establishing the following mobile termination rates for 2008
through 2011:



| |  |  | January 1 to December 31, 2008: $0.5465 per minute;
| | - |  | ---------------------------------------------------



| |  |  | January 1 to December 31, 2009: $0.5060 per minute;
| | - |  | ---------------------------------------------------



| |  |  | January 1 to December 31, 2010: $0.4705 per minute; and
| | - |  | -------------------------------------------------------



| |  |  | January 1 to December 31, 2011: $0.4179 per minute.
| | - |  | ---------------------------------------------------

These fees are substantially lower than the fees agreed upon with the rest of the industry operators in 2006. Telcel challenged the
resolution and, in October 2008, obtained a court order suspending its effects until a final ruling is issued. No final resolution has been rendered. This case is now to be resolved by the Supreme Court of Justice.



| |  |  | April 2009 COFETEL Resolution  Avantel Interconnection Disagreement. In April 2009, COFETEL issued a resolution establishing the following
mobile termination rates for 2008 through 2010 applicable between Avantel (a subsidiary of Axtel) and Telcel for termination of calls under the calling party pays system in Telcels mobile network:
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | January 1 to December 31, 2008: $1.12 per minute plus a surcharge of 18% over the total mobile termination minutes billed;
| | - |  | --------------------------------------------------------------------------------------------------------------------------



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| |  |  | January 1 to December 31, 2009: $1.00 per minute plus a surcharge of 10% over the total termination minutes billed;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | January 1 to December 31, 2010: $0.90 per minute with no surcharge, in the understanding that the rate will be billed by adding the actual
duration of the calls measured in seconds and then rounding up to the next minute.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In May
2009, Telcel challenged the resolution. This proceeding was overruled since Avantel challenged COFETELs resolution by filing a review proceeding with the SCT that resulted in the SCT issuing a ruling in November 2010 that established mobile
termination rates as follows:



| |  |  | January 1 to December 31, 2008: $0.5465 per minute;
| | - |  | ---------------------------------------------------



| |  |  | January 1 to December 31, 2009: $0.5060 per minute;
| | - |  | ---------------------------------------------------



| |  |  | January 1 to December 31, 2010: $0.4705 per minute; and
| | - |  | -------------------------------------------------------



| |  |  | January 1 to December 31, 2011: $0.4179 per minute.
| | - |  | ---------------------------------------------------

Telcel challenged this resolution and no final decision has been rendered. This case is now to be resolved by the Supreme Court of Justice
(Suprema Corte de Justicia).



| |  |  | 2010/2011 Agreements. In December 2010 and early 2011, Telcel, Telefónica, Telmex and certain other operators agreed on the mobile
termination rates payable for local and long-distance (national and international) calls by mobile network users under the calling party pays system for the years 2011 through 2014. These agreements established the following continued
reductions in mobile termination rates:
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | January 1 to December 31, 2011: $0.95 per minute;
| | - |  | -------------------------------------------------



| |  |  | January 1 to December 31, 2012: $0.86 per minute;
| | - |  | -------------------------------------------------



| |  |  | January 1 to December 31, 2013: $0.78 per minute; and
| | - |  | -----------------------------------------------------



| |  |  | January 1 to December 31, 2014: $0.69 per minute.
| | - |  | -------------------------------------------------

The parties also agreed on a new method for computing mobile termination rates. Instead of rounding each call up to the
next minute before calculating the sum of total network occupation, mobile termination fees will be computed by adding up the length of each call in seconds, excluding the first minute of use.



| |  |  | 2010-2011 Proceedings. In 2010 and 2011, Nextel, Alestra, Maxcom, Marcatel, Megacable, Bestphone, Cablemas, Operbes, and Cablevisión (the
latter four, subsidiaries of Grupo Televisa), initiated proceedings with COFETEL to establish mobile termination rates for the years from 2011 through 2014-2015 (in the case of Maxcom, from 2011 through 2020). With regard to the proceeding initiated
by Alestra, in April 2011, COFETEL issued a resolution establishing the mobile termination rate applicable for 2011 at $0.3912. Telcel challenged the resolution. As of the date of the accompanying financial statements, resolutions for all of the
other proceedings are pending. However, Telcel expects all such proceedings to be resolved in the same manner as the Alestra proceeding; i.e., setting the termination rate for 2011 at $0.3912 with subsequent reductions for the following years.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The Company expects that mobile termination rates will continue to be the subject of litigation and administrative
proceedings. The Company cannot predict when or how these matters will be resolved. The competitive and financial effects of any resolution could be complex and difficult to predict. Although the matters in dispute primarily concern certain
operators, if those matters are resolved adversely to the Company through a final, non-appealable resolution or decision from COFETEL, SCT or the courts, the impact could be material because Telcel would be required to offer to the other operators
any more favorable fees it is required to provide to these operators, as of the date of such final, non-appealable resolution or decision. This could materially reduce Telcels mobile termination revenues in future periods. Also, depending on
how the disputes are resolved, there could be contractual claims among dissenting operators and Telcel for reimbursement or payment, as the case may be, of amounts paid or owed between Telcel and such dissenting operators for certain periods from
2005 to 2010.

Recently the Mexican Supreme Court of Justice ruled that lower courts may not grant temporary injunctive relief suspending the
application of interconnection tariffs set by Cofetel. The ruling will eliminate the ability of an operator to obtain judicial suspensions against interconnection rulings issued by Cofetel. Operators will continue to have the ability to challenge
interconnection resolutions issued by Cofetel, but such resolutions will not be stayed pending final resolution by the courts. All proceedings initiated by Telcel in the past against interconnection rulings issued by Cofetel will continue their
course. We expect that mobile termination rates will continue to be the subject of litigation and administrative proceedings. We cannot predict when or how these matters will be resolved. Although the matters in dispute primarily concern certain
operators, pending a final resolution from the courts and given the inability to suspend Cofetels interconnection resolution, operators interconnected to Telcels network may elect to pay Telcel the reduced fees resolved by Cofetel. Each
operator will make its own determination on how to allocate risks associated with such legal proceedings.



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February 2009 Interconnection Plan

In February 2009, COFETEL published a Fundamental Technical Plan of Interconnection and Inter-operability (the Plan) that addresses the technical, economic and legal conditions of
interconnection. With respect to mobile termination fees, the Plan establishes a process for developing an economic model over a relatively brief period and then applying the economic model to set fees, which could override the existing fee
agreements among industry concessionaires. Telcel believes that the implementation of the Plan will result in asymmetrical and discriminatory treatment for those concessionaires that, in COFETELs opinion, have the highest number of user
accesses, and that it will also subject these concessionaires to specific technical and legal requirements and different economic, technical and legal conditions than the other concessionaires, such as the disaggregation of network components.

The Company is unable to predict the competitive and financial effects that might result from implementation of the Plan. However, these
results could be substantially different from the potential effects of the regulatory steps described above with respect to fixed-to-mobile interconnection.

In March 2009, Telcel challenged the Plan in the Mexican courts. In April 2009, Telcel obtained a court order suspending the effects of the Plan. As of the date of the date of the accompanying financial
statements, the challenge remains unresolved.

Short Message Services (SMS)

Under the terms of its concessions for the 850 megahertz spectrum, Telcel must pay the Mexican federal government a royalty based on gross revenues from concessioned services. The royalty is levied at
rates that vary from region to region and average approximately 6%.

Telcel believes that short message services are value-added services that
are not concessioned services, and that revenues from short message services should not be subject to this royalty.



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In other proceedings, COFETEL has ruled that short text messages are subject to the interconnection
regulatory regime and that such services do not constitute value-added services and are therefore concessioned services subject to the royalty described above. Telcel is currently disputing these issues in an administrative proceeding, but has made
provisions for this contingency considered possible.

Trademarks Tax Assessments

On March 3, 2006, the Mexican Tax Administration Service (SAT) notified Telcel of an assessment of Ps. 281.7 million (Ps.
155.8 million plus adjustments, fines and late fees) as a result of a tax deduction taken by Telcel in 2003 of Ps. 1,267.7 million in connection with royalty payments made to another of the Companys subsidiaries for the use of
certain trademarks. In June 2007, the SAT notified Telcel of an additional assessment of Ps. 541.5 million (Ps. 258.5 million plus adjustments, fines and late fees) as a result of a tax deduction taken by Telcel in 2003 in connection with
the aforementioned royalty payments. The Company and Telcel believe that these deductions were made in accordance with applicable law and have challenged the validity of these assessments.

In December 2007, the SAT notified Telcel of a new assessment of Ps. 453.6 million (Ps. 243.6 million plus adjustments, fines and late fees) in connection with a deduction of advertising
expenses made by Telcel in 2004 in the amount of Ps. 1,678.6 million. The SAT is challenging the validity of this deduction, alleging that the deduction is unfounded because Telcel is already paying a royalty for the use of the trademarks. Telcel
believes that the SATs argument is unfounded and has challenged the assessment in court.

Based on the above, the Company expects the
SAT to challenge other deductions taken in 2005, 2006 and 2007 for royalty payments and/or expenses associated with the trademarks. The Company has not made provisions in its financial statements for these potential liabilities.

Telmex

Consolidation of Local
Service Areas

In November 2005, COFETEL issued the guidelines for making changes to local service areas. In April 2006, Telmex filed a
motion for an administrative review of COFETELs guidelines for modifying the local service areas. Such motion was denied by the SCT and is currently in litigation before the Third Regional Metropolitan Chamber of the Federal Tax and
Administrative Court.

In March 2007, COFETEL ordered the consolidation of a package of 70 local service areas and a package of 2 local
service areas. In September 2008, it ordered the consolidation of another package of 125 local service areas. In December 2008, it ordered the consolidation of one local service area. Each consolidation has its own schedule. Telmex has challenged
COFETELs orders through the corresponding legal procedures.

In November 2009, in compliance with the ruling issued by the Collegiate
Administrative Court, the resolutions issued by COFETEL became null and void.

If the validity of COFETELs ruling is eventually
recognized, COFETEL may be able to re-initiate proceedings to require the consolidation of the local service areas.

If the consolidation
requirement ever becomes effective, there could be an adverse effect on the Telmexs long-distance revenues.

COFECOSubstantial Market PowerMonopolistic practices investigations

In 2007, COFECO initiated eight probes aimed at evaluating whether Telmex enjoys substantial control and



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engages in monopolistic practices in certain markets.

Final resolutions have been
issued for four of these probes through which COFECO has determined that Telmex has substantial control in the following areas: (i) termination of public commuted traffic; (ii) origination of public commuted traffic; (iii) local
transit services; and (iv) leasing of lines or circuits. Telmex has expressed its disagreement with the proceedings and has disputed its findings through evidence submitted against them.

For the four markets in question, COFECO has already confirmed its resolutions and Telmex has filed the applicable motions for appeal, which COFECO has denied. Telmex has filed for relief (amparo)
proceedings against the COFECOs rejection of the motions for appeal, and the rulings on these relief proceedings are still pending. If the disputed resolutions are determined to be final, COFETEL, after completing the applicable procedure, may
establish specific obligations for Telmex regarding fees, quality of services and information in such markets, such as additional information and service quality disclosure requirements. The exact nature of these regulations and their impact on the
business cannot be known in advance, but they will likely reduce Telmexs flexibility and its ability to adopt competitive market policies. It is also impossible to predict how long Telmex will have to adopt the new regulations and whether it
will actually be able to do so.

In the four remaining probes, COFECO is attempting to determine if Telmex engaged in alleged monopolistic
practices in the following markets: (i) the broadband internet market for domestic residential customers; and (ii) the local and national long-distance dedicated links wholesale leasing services market. These probes are currently in the
submission of evidence stage. For the inter-urban transport for commuted long-distance traffic services market and the fixed-network interconnection services market, COFECO has already issued and delivered Probable Fault Notices. Telmex promptly
responded to these notices and contested the findings. There is no certainty as to the outcome of these probes and notices and they may be unfavorable for Telmex, which could result in regulations, restrictions or monetary fines being imposed on
this related party.

Fundamental Technical Interconnection and Interoperability Plan

On February 10, 2009, COFETEL published the Fundamental Technical Interconnection and Interoperability Plan in the Official Gazette. This plan
could have a negative impact on Telmex and on the telecommunications sector in general, since it establishes additional obligations to concessionaries.

Telmex has legally challenged the plan through a number of available channels and has presented its evidence as to the illegality and unconstitutionality of the plan.

Interconnection Rates

In
November 2010, the SCT submitted the guidelines issued by COFETEL for review by the Federal Commission for the Improvement of Regulations (COFEMER) to have the latter develop the cost models to be used to set the interconnection rates for
interconnection services provided by the public telecommunications network concessionaires. After COFEMER has issued its Complete Final Ruling on such guidelines, they will be published by COFETEL in the Official Gazetteand will become
effective. This situation may have a negative effect on Telmexs revenues from interconnection services and on its results of operations.

Comcel

Dominant position

In September 2009, the Colombian Communications Regulation Commission (CRC) issued a series of resolutions stating that
Comcel has a dominant position in Colombias market for outgoing mobile services. Under Colombian law, a market participant is considered to have a dominant position in a specified market if there if it enjoys



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substantial superiority over the markets other participants regarding its traffic, revenues and subscriber base vis-à-vis its competitors traffic, revenues and
subscriber base. The resolutions also included regulations that would require Comcel to charge rates (excluding access fees) for mobile-to-mobile calls outside the Comcel network (off net) that are no higher than the fees charged for
mobile-to-mobile calls within the Comcel network (on net) plus access fees. The regulations were first implemented on December 4, 2009. As of the date of the accompanying financial statements, the CRC is evaluating whether to
broaden or suspend the regulations. There is no certainty as to the outcome of the CRCs probe. Any broadened regulation could have an adverse impact on Comcels operations.

Brazil

Anatel Inflation-Related Adjustments

The Brazilian National Telecommunications Agency has challenged both Tess, S.A., or Tess, and ATL-Telecom Leste, S.A., or ATL,
regarding the calculation of inflation-related adjustments due under these companies concession agreements with ANATEL. 40% of the concession price under each of these agreements was due upon execution and 60% was due in three equal annual
installments (subject to inflation-related adjustments and interest) beginning in 1999. Both companies have made these concession payments, but ANATEL has rejected the companies calculation of the inflation-related adjustments related to the
payment corresponding to 60% of the price and has requested payment of the alleged shortfalls.

The companies have filed declaratory and
consignment actions in Brazilian courts seeking resolution of the disputes. The court of first instance ruled against ATLs declaratory suit in October 2001 and ATLs filing for consignment action in September 2002. Subsequently, ATL filed
appeals which are pending. The court of first instance ruled against Tess filing for consignment action in June 2003 and against Tess filing for declaratory action in February 2009. Tess filed an appeal which is still pending. In
December 2008, ANATEL charged Tess approximately R$ 267 million (approximately Ps. 1,980 million). Tess obtained an injunction granted by the Federal Court of Appeals, and consequently payment has been suspended until the final ruling is
issued. In March 2009, ANATEL charged ATL approximately R$ 167 million (approximately Ps. 1,235 million). ATL also obtained an injunction granted by the Federal Court of Appeals and consequently payment has been suspended until the final ruling
is issued.

The total contested amount of approximately R$ 523 million (approximately Ps.3,878 million) (excluding potential fines,
surcharges and interest) was calculated based on certain assumptions about the monetary correction methodology. In the event that a different monetary correction method is used, this total contested amount could increase. Claro Brasil, S.A.
(Claro Brasil) has assumed the rights and obligations of both ATL and Tess under this case.

Claro Brasil has created a provision
of R$ 523 million (approximately Ps. 3,878 million) in its financial statements for these contingencies considered possible.

BNDESPar

Prior to the
acquisition of Telet, S.A. (Telet) and Americel, S.A. (Americel) by Telecom Americas Limited (Telecom Americas), the other controlling entity over the Companys Brazilian operations, BNDESPar, a subsidiary of
BNDES, the Brazilian development bank, had entered into investment and other shareholder agreements with Americel, Telet and some of their significant shareholders. Under these agreements, BNDESPar had the right, among other points, to participate
in the sale of shares of Telet and Americel in the event of certain transfers of control, provided that BNDESPar held 5% of the shares of those companies.

In October 2003, Telecom América increased the capital stock of both Telet and Americel, and BNDESPars ownership fell from approximately 20% in each company to below 5%, as it elected not to
exercise its preemptive



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rights. Subsequently, BNDESPar sent official notices to Telet and Americel reserving its rights under the agreements with respect to certain past transfers of shares. In November 2004, BNDESPar
filed a lawsuit with the competent court of Rio de Janeiro claiming that BNDESPar is entitled to sell its shares in Telet and Americel to Telecom Americas for approximately R$ 273 million (approximately Ps. 2,026 million). The Company does not
believe that BNDESPar has valid grounds for its claims against Telecom Americas. The Company cannot provide assurance, however, that Telecom Americas will ultimately prevail in this dispute. The Company has not made specific provisions in its
consolidated financial statements for this contingency considered possible.

Lune Patent Case

A Brazilian company claims that wireless operators in Brazil have infringed on its patent over certain caller ID technology. The plaintiff first brought a
patent infringement case in a state court in Brasília, Federal Capital of Brazil, against the Companys subsidiary Americel and later brought cases, as part of two separate proceedings, against 45 other defendants.

Americel filed three special appeals against the decision of the state court in Brasília in the hopes of having the case heard by the Superior
Court of Justice (which is the highest court in Brazil to decide on questions of federal law) and Supreme Court (the highest court in Brazil to decide on questions of constitutional law). The Court of Appeals has determined that two of
Americels special appeals will be heard by the Superior Court of Justice.

The plaintiff has requested the court to initiate the
necessary proceedings for the execution of judgment against Americel. In September 2006, the Superior Court of Justice of Brazil unanimously ruled to stay the proceedings, due to an injunction suspending the validity of the patent in question. In
September 2009, Lune filed before the Superior Court of Justice of Brazil a motion to overturn the ruling to stay the proceedings. However, Americel obtained a favorable resolution that confirmed the decision to stay the trial until a ruling has
been handed down by the federal court in Rio de Janeiro. Lune has challenged the resolution before the Superior Court, but the resolution to stay the trial was unanimously upheld. The Company expects that the trial will remain stayed as long as the
patent remains suspended. The proceedings remain suspended by the Superior Court of Justice.

The court-appointed expert has estimated that
the award for damages could amount to as much as approximately R$ 551 million (approximately Ps. 4,086 million) for the period from March 1998 to February 2006. That estimate takes into account Americels number of lines and subscribers
and considers certain assumptions regarding the way monetary correction is calculated. In the event that a different monetary correction method is used, the estimate of damages for the period from March 1998 to February 2006 could increase. In
addition, neither the court-appointed expert nor Americel has estimated what the award for damages could be for the period after February 2006, since during this period Americels number of lines and subscribers, which are factors in the
calculation of the estimate, have increased significantly. In the event of adverse decisions in these cases, Americel may be liable for damages for the period from February 2006 through 2012, at which time Lunes patent is set to expire. The
Company has not made specific provisions in its consolidated financial statements to cover these contingencies considered possible.

Consumer Protection Lawsuit (DPDC)

In July 2009, the Brazilian Federal and State Prosecutor Office, along with Brazils consumer protection agencies, including the Consumer Protection
and Defense Agency, initiated a lawsuit against Claro Brasil alleging that it has violated certain consumer protection regulations. The amount claimed by the plaintiffs is R$ 300 million (approximately Ps. 2,224 million). Claro Brasil is
contesting the lawsuit and a final ruling is still pending. The Company has not made specific provisions in its consolidated financial statements to cover this liability considered possible.

Tax assessments against Americel and Claro (PIS/CONFINS)

In December 2005, the
Brazilian Federal Revenue Service issued three tax assessments against Americel in respect of withholding income taxes and PIS and COFINS taxes (which are levied on gross revenue) for 2000 through 2005.



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In addition, in March 2006, the Brazilian Federal Revenue Service issued two tax assessments against ATL related to certain tax deductions taken by ATL in connection with its PIS and COFINS
obligations. As discussed above, Claro Brasil is the corporate successor to ATL. The total amount of these tax assessments, which Americel and Claro Brasil are contesting in pending challenges, was R$ 494 million (approximately Ps. 3,663
million), including fines and interest as of December 31, 2010. Separately, Claro Brasil and Americel have commenced lawsuits against the Brazilian Federal Revenue Service seeking to exclude state value added tax (ICMS) payments and
interconnection fees from the base used to calculate their PIS and COFINS tax obligations. The total amount in dispute was R$ 758 million (approximately Ps. 5,621 million) as of December 31, 2010.

In addition, in January 2011, the Brazilian Federal Revenue Service issued tax assessments against Claro Brasil regarding allegedly improper offsetting
of certain tax deductions claimed by Claro Brasil in connection with its PIS and COFINS obligations. The total amount of these tax assessments, which Claro Brasil is contesting in pending challenges, is R$ 644 million (approximately Ps. 4,778
millions).

The Company has made specific provisions of R$ 758 million (approximately Ps.5,621 million) in its consolidated financial
statements to cover the portion of the portion considered possible of the contingency related to the exclusion of ICMS payments and interconnection fees from the base used to calculate Claro Brasils and Americels tax obligations, and has
also made specific provisions of R$ 120 million (approximately Ps. 889 million) to cover only a portion of the contingency considered possible.

ICMS Tax Credits

The Brazilian Federal Revenue Service issued tax assessments
against Claro Brasil and Americel alleging that they improperly claimed certain tax credits under the state value added tax (ICMS) regime. The total amount of the tax assessments, which Claro Brasil and Americel are contesting in pending challenges,
is approximately R$ 2,274 million (approximately Ps.16,864 million), including fines and interest as of December 31, 2010. The Company has made specific provisions of R$ 272 million (approximately Ps. 2,017 million) in its
consolidated financial statements to cover the portion of the contingency considered probable.

Tax Credit for Income Tax Withheld
Abroad

The Brazilian Federal Revenue Service issued tax assessments against Claro Brasil alleging that it incorrectly offset tax
withheld in Ecuador and Honduras, among other countries, against some of its Brazilian tax obligations. The taxes in question relate to the payment of fees for services provided by Claro Brasil to Ecuador Telecom S.A. The tax assessments do not call
into question Claro Brasils right to offset the amounts, but rather, they concern the allegedly incorrect method used to do so. Therefore, in the event that Claro Brasil does not prevail in its challenges, it would still be entitled to a tax
credit for taxes withheld abroad The total amount of the tax assessments, which Claro Brasil is contesting in its challenges, was approximately R$ 306 million (approximately Ps. 2,269 million), including fines and interest, as of
December 31, 2010. The Company made no specific provisions in its consolidated financial statements to cover this contingency.

EBC
Funding

Claro Brasil and Americel filed an injunction challenging a federal law to create a Brazilian Communication Company that is to
be partially funded by mobile operators in upcoming years. The total amount that Claro Brasil and Americel would be required to contribute at December 31, 2010 is R$ 123 million (approximately Ps. 904 million). The Company has made
specific provisions of R$ 123 million in its financial statements to cover this potential liability.

FUST and FUNTTEL Funding



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The Brazilian Federal Revenue Service has issued tax assessments totaling R$ 566 million (approximately
Ps. 4,197 million) against Claro Brasil and Americel related to alleged underpayment of their funding obligations for the Telecommunications System Universalization Fund (FUST) and the Telecom Development Fund (FUNTTEL) from 2006 to 2009 as a result
of their exclusion of interconnection and activation fee revenues from the basis used to calculate their funding obligations. Claro Brasil and Americel have challenged the tax assessments, and such challenges are pending. The Company has made
specific provisions of R$ 41 million (approximately Ps. 904 million) in its financial statements to cover the potential liability.

Embratel

Brazilian value-added
goods and services tax (ICMS)

Embratel and Telmex Do Brasil Ltda. received assessments by the tax authorities related to alleged ICMS
tax credits of Ps. 108 million taken incorrectly by the Company at December 31, 2010, which is considered a probable loss, while the possible loss aggregates to Ps. 4,080 million at December 31, 2010.

Star One has tax contingencies of Ps. 9,898 million at December 31, 2010 for unpaid ICMS on internet and satellite use. This amount is
considered only a possible loss and consequently, the Company has not provided for such contingencies in its financial statements.

|74. | 
|--- | 

Brazilian Social Welfare Tax on Service
Exports (PIS)

Embratel and Telmex do Brasil Ltda. have total tax contingencies of Ps. 1,379 million at December 31, 2010
related to the contributions of PIS prior to 1995, which were offset in conformity with Brazilian tax law. Based on the known facts and arguments and on the opinion of the companies legal counsel, at December 31, 2010, only Ps.
55 million of this contingency was considered a probable loss and Ps. 1,324 million was considered a possible loss.

Brazilian
Social Welfare Tax for Service Export Security Tax (COFINS)

Embratel, Star One and Telmex do Brasil Ltda. have tax contingencies of
Ps. 550 million at December 31, 2010 related to the payment of COFINS from 1999, considered a probable loss, as well as Ps. 1,283 million at December 31, 2010 that is considered a possible loss.

Other tax contingencies

Embratel, Star One, Telmex do Brasil Ltda., Brasil Center Comunicações Ltda. and Primesys Soluções Empresariais S.A. have
other on-going tax litigations involving the Brazilian Social Security Institute (INSS), Income Tax and Social Contribution on Net Income (IRPJ/CSLL), Telecommunications Systems Universalization Fund (FUST), Telecom Development Fund (FUNTTEL) and
Income Tax on Payments Abroad (IRRF), among others. The total amount considered a probable loss at December 31, 2010 is Ps. 15 million, while Ps 6,819 million at December 31, 2010 is considered as a possible loss.

Additionally, Embratel received assessments from the Brazilian tax authorities in the form of fines for not filing electronic files from 2001 through
2005. These potential fines total Ps. 3,475 million at December 31, 2010, which is considered a possible loss.

Furthermore,
Embratel and its subsidiaries have recognized tax contingencies in 2010 involving the CPMF (Brazilian Values and Credits Movements or Transmission and Financial Rights Contribution), ITR (Brazilian Rural Territorial Tax), ISS (Brazilian Services
Tax), IPI (Brazilian Industrialized Products Tax), II (Brazilian Imports Tax), CSRF (Brazilian Retained Social Contribution), Public Broadcasting Promotion Contribution and Net Contributions. At



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December 31, 2010, Ps. 72 million of these contingencies was considered a probable loss and Ps. 1,289 million was considered a possible loss.

Embratel, Star One and Soluções Empresariais S.A., have other on-going litigations relating to the offsetting of IRPJ (Brazilian Income
Tax), PIS (Brazilian Social Welfare Tax on Service Exports), COFINS (Brazilian Social Welfare Tax for Service Export Security Tax), CIDE (Brazilian Economic Intervention Contribution), CSLL (Brazilian Net Income Social Contribution) and IRRF
(Brazilian Foreign Paid Income Tax) against allegedly improper IRPJ and ILL (Brazilian Net Income Tax) credits of Ps. 2,971 million at December 31, 2010.

Disputes with third parties

Certain cases on a number of different matters are in
advanced stages of the litigation process and, according to Embratels external lawyers, the subsidiary stands a chance of losing at least some of these suits; consequently, a provision of Ps. 1,276 million was recognized at
December 31, 2010 to cover the probable unfavorable rulings.

Additionally, Embratel, Telmex do Brasil Ltda., Brasil Center
Comunicações Ltda. Click 21 and TvSat have other on-going litigations with claims totaling Ps. 1,463 million at December 31, 2010 that are considered a possible loss.

Other civil and labor contingencies

Embratel is party to claims filed by its
telephone service customers for which it has created a provision of Ps. 179 million at December 31, 2010 for amounts considered as probable losses. At December 31, 2010, Ps. 939 million is considered as a possible loss.

Additionally, Embratel received a fine from Anatel of Ps. 2,723 million at December 31, 2010 of which Ps. 2,620 million at
December 31, 2010 was considered a possible loss, and Ps. 103 million was considered a probable loss.

Conecel

Tax Assessments

During 2008,
Conecel filed administrative proceedings with the Ecuadorian Revenue Services ( SRI), challenging USD 127 million (approximately Ps. 1,569 million) regarding certain tax assessments notified by the SRI amounting to USD138 million
(approximately Ps. 1,705 million) (not including interest and penalties) which related to special consumption (ICE), value-added, income and withholding taxes for the years 2003 to 2006. In March 2008, Conecel paid the SRI USD 14.3 million
(approximately Ps. 176 million) in respect of the aforesaid tax assessments.

In December 2008, the SRI notified Conecel of a resolution that
denied the challenges filed by Conecel against the tax assessments. As a result of the foregoing, on January 15, 2009, Conecel filed a lawsuit before a Tax Court in Guayaquil challenging the tax assessments while attaching a bank guarantee of
USD 12.7 million (approximately Ps. 156 million), which represented 10% of the contested amount.

In May 2009, the SRI filed its answer
to the complaint. Immediately thereafter, the Tax Court opened the evidentiary stage of the proceedings and summoned the parties to several document exhibition hearings, which took place in Conecel and the SRI and were attended by accounting experts
accepted by both the defendant and the plaintiff. These experts are responsible for issuing reports on the document exhibition hearings. The latest expert opinion was filed before the Tax Court on January 27, 2010. The evidentiary phase has
been concluded. The final hearing took place on June 23, 2010 and final resolution by the Tax Court is still pending.

18. Related
Parties



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a) The following is an analysis of the balances with related parties at January 1, 2009 and at
December 31, 2009 and 2010. All of the companies are considered as associates or affiliates of América Móvil since the Company or the Companys principal shareholders are also direct or indirect shareholders in the related
parties.



|                                                     |  |                   |              |  |                 |      |              |  |  |  |              | 
|---------------------------------------------------- |  | ----------------- | ------------ |  | --------------- | ---- | ------------ |  |  |  | ------------ | 
|                                                     |  | At January 1,2009 |              |  | At December 31, |     
|                                                     |  |                   | 2009         |  |                 | 2010 |             
|Accounts receivable:                                 |  |                   |              |  |                 |      |              |  |  |  |              | 
|Sanborn Hermanos, S.A.                               |  |                   | Ps. 163,051  |  |                 |      | Ps. 68,621   |  |  |  | Ps. 84,457   | 
|Sears Roebuck de México, S.A. de C.V.                |  |                   | 61,738       |  |                 |      | 27,175       |  |  |  | 25,296       | 
|Net Serviços de Comunicação, S.A. (NET)              |  |                   | 1,216,397    |  |                 |      | 2,240,507    |  |  |  | 2,475,664    | 
|Grupo Carso, S.A.B. de C.V.                          |  |                   | 70,261       |  |                 |      | 56,568       |  |  |  | 316,815      | 
|AT&T Inc.                                            |  |                   | 258,627      |  |                 |      | 171,298      |  |  |  | 102,851      | 
|Alestra, S. de R.L. de C.V.                          |  |                   | 114,625      |  |                 |      | 454,762      |  |  |  | 490,773      | 
|Other                                                |  |                   | 366,246      |  |                 |      | 90,119       |  |  |  | 75,180       | 
|                                                     |  |                   |              |  |                 |      |              |  |  |  |              | 
|Total                                                |  |                   | Ps.2,250,945 |  |                 |      | Ps.3,109,050 |  |  |  | Ps.3,571,036 | 
|                                                     |  |                   |              |  |                 |      |              |  |  |  |              | 
|                                                     |  |                   |             
|Accounts payable:                                    |  |                   |              |  |                 |      |              |  |  |  |              | 
|Fianzas Guardiana Inbursa, S.A. de C.V.              |  |                   | Ps. 77,232   |  |                 |      | Ps. 108,698  |  |  |  | Ps. 94,800   | 
|Seguros Inbursa, S.A. de C.V.                        |  |                   | 75,706       |  |                 |      | 118,286      |  |  |  | 111,105      | 
|Net Serviços de Comunicação, S.A. (NET)              |  |                   | 644,458      |  |                 |      | 869,403      |  |  |  | 460,021      | 
|Grupo Carso, S.A.B. de C.V.                          |  |                   | 169,221      |  |                 |      | 227,795      |  |  |  | 346,566      | 
|Carso infraestructura y Construcción, S.A.B. de C.V. |  |                   | 208,559      |  |                 |      | 25,459       |  |  |  | 293          | 
|Inversora Bursátil, S.A.                             |  |                   | 121,383      |  |                 |      | 127,472      |  |  |  | 131,813      | 
|2Wire, Inc                                           |  |                   | 190,266      |  |                 |      |              |  |  |  |              | 
|Microm, S.A. de C.V.                                 |  |                   | 119,631      |  |                 |      |              |  |  |  | 52,008       | 
|Eidon Software, S.A. de C.V.                         |  |                   |              |  |                 |      | 103,738      |  |  |  | 106,186      | 
|Other                                                |  |                   | 580,648      |  |                 |      | 540,045      |  |  |  | 608,503      | 
|                                                     |  |                   |              |  |                 |      |              |  |  |  |              | 
|Total                                                |  |                   | Ps.2,187,104 |  |                 |      | Ps.2,120,896 |  |  |  | Ps.1,911,295 | 
|                                                     |  |                   |              |  |                 |      |              |  |  |  |              | 

b) For the years ended December 31, 2009 and 2010, the Company conducted the following transactions with related
parties:



|                                                                                                           |  |      |           |  |      |     |           | 
|---------------------------------------------------------------------------------------------------------- |  | ---- | --------- |  | ---- | --- | --------- | 
|                                                                                                           |  | 2009 |           |  | 2010 |    
|Investments and expenses:                                                                                  |  |      |           |  |      |     |           | 
|Construction services, purchases of materials, inventories and fixed assets (1)                            |  | Ps.  | 3,243,849 |  |      | Ps. | 3,411,260 | 
|Insurance premiums, fees paid for administrative and operating services, brokerage services and others (2) |  |      | 2,250,368 |  |      |     | 2,215,599 | 
|Call termination costs                                                                                     |  |      | 247,567   |  |      |     | 187,971   | 
|Interconnection expenses (3)                                                                               |  |      | 2,571,296 |  |      |     | 3,612,950 | 
|Other services                                                                                             |  |      | 63,231    |  |      |     | 40,052    | 
|                                                                                                           |  |      |           |  |      |     |           | 
|                                                                                                           |  | Ps.  | 8,376,311 |  |      | Ps. | 9,467,832 | 
|                                                                                                           |  |      |           |  |      |     |           | 
|                                                                                                           |  |     
|Revenues:                                                                                                  |  |      |           |  |      |     |           | 
|Sale of long-distance services and other telecommunications services (4)                                   |  | Ps.  | 3,605,684 |  |      | Ps. | 4,847,286 | 
|Sale of materials and other services                                                                       |  |      | 661,042   |  |      |     | 560,342   | 
|Call termination revenues (5)                                                                              |  |      | 1,030,159 |  |      |     | 666,013   | 
|                                                                                                           |  |      |           |  |      |     |           | 
|                                                                                                           |  | Ps.  | 5,296,885 |  |      | Ps. | 6,073,641 | 
|                                                                                                           |  |      |           |  |      |     |           | 



|(1) | In 2010, this amount includes Ps. 2,720,123 (Ps. 1,591,531 in 2009) for network construction services and construction materials purchased from subsidiaries of Grupo
Carso, S.A.B. de C.V. (Grupo Carso), which is an entity under common control with América Móvil. It also includes Ps.97,204 in 2010 (Ps.453,348 in 2009) for the purchase from 2Wire of equipment for the broadband service platform.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|(2) | In 2010, this amount includes Ps. 343,810 (Ps. 571,338 in 2009) for network maintenance services performed by Grupo Carso subsidiaries; Ps. 632,059 (Ps. 714,242 in
2009) for software services provided by an associate; Ps. 518,680 (Ps. 482,598 in 2009) for insurance premiums with Seguros Inbursa, S.A. (Seguros), which, in turn, places most of such insurance with reinsurers; Ps. 196,417 (Ps. 208,942 in
2009) for stock market brokerage services with Inversora Bursátil, S.A. (Inversora); and Ps. 159,083 (Ps. 335,975 in 2009) of fees for management and operating services due to AT&T Mexico, Inc. and Inversora, which is a corporation
under common control with América Móvil.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | Includes interconnection expenses for calls from fixed telephones to mobile phones paid to NET subsidiaries.
|--- | ------------------------------------------------------------------------------------------------------------

|(4) | Revenues from billing long distance and other telecommunications services in 2010 include Ps. 3,402,843 (Ps. 2,271,994 in 2009) from NET and Ps. 229,941 (Ps. 196,462 in
2009) from AT&T subsidiaries.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(5) | Includes costs and revenues with AT&T, Inc. companies.
|--- | ------------------------------------------------------

c) In December 2009, Embratel signed an agreement for the sale of capacity for Ps. 6,372 million (USD 487.9 million) through which it grants NET rights of use over its network. In addition, Embratel
also executed an agreement to obtain the rights of use of transmission capacity over the NET coaxial network for which it paid Ps. 6,551 million (USD 501.7 million). Both agreements establish irrevocable rights of use (IRU) for 5 years with an
option for renewal for another 5 years.

d) During 2010, the Company paid Ps. 755,127 (Ps. 765,866 in 2009) for short-term direct benefits to
its first-level executives.

19. Shareholders Equity

Shares

a) At December 31, 2009, the Companys capital stock is represented by
38,596,000,000 shares (11,712,316,330 Series AA shares, 450,920,648 Series A shares and 26,432,763,022 registered Series L shares with no par value and limited voting rights (Series L)). At December 31, 2010, the Companys
capital stock is represented by 40,173,000,000 shares (11,712,316,330 Series AA shares, 392,803,640 Series A shares and 28,067,880,030 Series L shares). Capital stock includes (i) the retroactive effect of the stock split in July 2005;
(ii) the effect of the merger with AMTEL in 2006; (iii) the re-subscription of 8,438,193,725 Series L treasury shares resulting from the public tender offers and share exchange for Carso Global Telecom, S.A.B. de C.V. and Telmex
Internacional, S.A.B. de C.V., which were completed on June 16, 2010; and (iv) the conversions of Series A shares into Series L shares, made by third parties through S.D. Indeval Institución para el Depósito de Valores, S.A.
de C.V. These shares represent the outstanding capital stock of the Company as of December 31, 2009 and 2010.

b) The capital stock of
the Company consists of a minimum fixed portion of Ps. 397,873 (nominal amount), represented by a total of 47,744,862,098 shares (including treasury shares available for re-subscription in accordance with the provisions of the Mexican Securities
Law), of which (i) 11,717,316,330 are common Series AA shares; (ii) 599,818,479 are common Series A shares; and (iii) 35,427,727,289 are Series L shares. All such shares have been fully subscribed and paid.

c) At December 31, 2009 and 2010, the Companys treasury shares included shares for re-subscription, in accordance with the provisions of the
Mexican Securities Law, in the amount of 15,460,944,642 shares (15,423,542,538 Series L shares and 37,402,104 Series A shares), and 7,571,862,098 shares (7,571,328,398 Series L shares and 533,700 Series A shares), respectively. The Companys
treasury shares include (i) the conversions of Series A shares into Series L shares performed by the Company through S.D. Indeval Institución para el Depósito de



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Valores, S.A. de C.V. in 2010; and (ii) the re-subscription of 8,438,193,725 Series L shares in the Companys treasury as a result of the public tender offers and share exchange for
Carso Global Telecom, S.A.B. de C.V. and Telmex Internacional, S.A.B. de C.V., which was completed on June 16, 2010).

d) The holders of
Series AA and Series A shares are entitled to full voting rights. The holders of Series L shares may only vote in certain circumstances, and they are only entitled to appoint two members of the Board of Directors and their respective alternates. The
matters in which the shareholders who are entitled to vote are the following: extension of the term of the Company, early dissolution of the Company, change of corporate purpose of the Company, change of nationality of the Company, transformation of
the Company, a merger with another company, as well as the cancellation of the registration of the shares issued by the Company in the National Securities Registry and any other foreign stock exchanges where they may be registered, except for
quotation systems or other markets not organized as stock exchanges. Within their respective series, all shares confer the same rights to their holders.

The Companys bylaws contain restrictions and limitations related to the subscription and acquisition of Series AA shares by non-Mexican investors.

e) In accordance with the bylaws of the Company, each share of the Series AA or Series A may be exchanged at the option of the holders for one share of
Series L. Series AA shares must at all times represent no less than 20% and no more than 51% of the Companys capital stock, and they also must represent at all times no less than 51% of the common shares (entitled to full voting rights,
represented by Series AA and Series A shares) representing capital stock.

Series AA shares may only be subscribed to or acquired by Mexican
investors, Mexican corporations and/or trusts expressly empowered for such purposes in accordance with the applicable legislation in force. Common Series A shares, which may be freely subscribed, may not represent more than 19.6% of capital stock
and may not exceed 49% of the common shares representing such capital. Common shares (entitled to full voting rights, represented by Series AA and Series A shares) may represent no more than 51% of the Companys capital stock.

Lastly, the combined number of Series L shares, which have limited voting rights and may be freely subscribed, and Series A shares may not exceed 80% of
the Companys capital stock. For purposes of determining these restrictions, the percentages mentioned above refer only to the number of Company shares outstanding.

f) An analysis of shares at January 1, 2009 and at December 31, 2009 and 2010 is as follows:



|                                                               |  |                           |     |   |           |  |        |          |  |     |        |   |  |  |        |  
|-------------------------------------------------------------- |  | ------------------------- | --- | - | --------- |  | ------ | -------- |  | --- | ------ | - |  |  | ------ | -
|                                                               |  | No. of shares in millions |    
|Year                                                           |  | Series A                  |     |   | Series AA |  |        | Series L |  |     | Total  |  
|At January 1, 2009                                             |  |                           | 480 |   |           |  | 11,712 |          |  | Ps. | 21,057 |   |  |  | 33,249 |  
|Public offering under common control                           |  |                           |     |   |           |  |        |          |  |     | 6,314  |   |  |  | 6,314  |  
|Repurchase of shares                                           |  |                           | (4  | ) |           |  |        |          |  |     | (963   | ) |  |  | (967   | )
|Conversion of shares                                           |  |                           | (25 | ) |           |  |        |          |  |     | 25     |   |  |  |        |  
|                                                               |  |                           |     |   |           |  |        |          |  |     |        |   |  |  |        |  
|At December 31, 2009                                           |  |                           | 451 |   |           |  | 11,712 |          |  |     | 26,433 |   |  |  | 38,596 |  
|Repurchase of shares                                           |  |                           | (1  | ) |           |  |        |          |  |     | (548   | ) |  |  | (549   | )
|Conversion of shares                                           |  |                           | (57 | ) |           |  |        |          |  |     | 57     |   |  |  |        |  
|Issuance of shares for acquisition of non-controlling interest |  |                           |     |   |           |  |        |          |  |     | 2,126  |   |  |  | 2,126  |  
|                                                               |  |                           |     |   |           |  |        |          |  |     |        |   |  |  |        |  
|At December 31, 2010                                           |  |                           | 393 |   |           |  | 11,712 |          |  |     | 28,068 |   |  |  | 40,173 |  
|                                                               |  |                           |     |   |           |  |        |          |  |     |        |   |  |  |        |  

Dividends

g) On
April 20, 2009, the Companys shareholders approved payment of a cash dividend of $0.30 pesos per share for each Series AA, A and L shares, for a total dividend of Ps. 9,812,319, to be paid in full on July 24, 2009 against coupon No.



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25 of the titles that represent the Companys capital stock.

On December 1,
2009, the Companys shareholders approved payment of a cash dividend of $0.50 pesos per share of each Series AA, A and L shares, for a total dividend of Ps. 16,166,730, to be paid in full on December 10, 2009 against coupon No. 26 of
the titles that represent the Companys capital stock.

On April 7, 2010, the Companys shareholders approved payment of a cash
dividend of $0.32 pesos per share of each Series AA, A and L shares, for a total dividend of Ps. 12,948,813, to be paid in two installments of Ps. 0.16 pesos per share on July 23, 2010 and November 19, 2010 against coupons No. 27 and
28, respectively, of the titles that represent the Companys capital stock.

The aforementioned dividends were paid from the Net taxed
profits account (CUFIN).

All of the Companys relevant financial information has been restated to give retroactive effect to the split
carried out in July 2005 and the merger with AMTEL in 2006. As a result, the information shown above does not necessarily concur with the information shown in the Companys legal records at each of the dates that shareholders meetings
were held (common control component of the shares are reflected for all periods presented).

Repurchase of shares

h) At January 1, 2009 and during the two-year period ended December 31, 2010, the Company has repurchased shares as shown in the following
table. The cost of the shares acquired in excess of the portion of capital stock corresponding to the acquired shares represents a charge to retained earnings:



|                     |  |                           |       |  |                                      |  |     |          |  |     |            |  |  |     |         | 
|-------------------- |  | ------------------------- | ----- |  | ------------------------------------ |  | --- | -------- |  | --- | ---------- |  |  | --- | ------- | 
|                     |  | No. of shares in millions |       |  | Amount in thousands of Mexican pesos | 
|Year                 |  | Series L                  |       |  | Series A                             |  |     | Series L |  |     | Series A   | 
|At January 1, 2009   |  |                           | 1,646 |  |                                      |  | 0.8 |          |  | Ps. | 41,736,011 |  |  | Ps. | 19,558  | 
|At December 31, 2009 |  |                           | 962   |  |                                      |  | 4   |          |  |     | 27,132,003 |  |  |     | 118,016 | 
|At December 31, 2010 |  |                           | 548   |  |                                      |  | 0.8 |          |  |     | 17,467,169 |  |  |     | 25,620  | 

i) The following is a reconciliation
of treasury shares for the years ended December 31, 2009 and 2010:



|                           |  |          |     |   |          |  |        |  
|-------------------------- |  | -------- | --- | - | -------- |  | ------ | -
|                           |  | Series A |     |   | Series L | 
|At January 1, 2009         |  |          | 33  |   |          |  | 14,461 |  
|Repurchase of shares       |  |          | 4   |   |          |  | 963    |  
|                           |  |          |     |   |          |  |        |  
|At December 31, 2009       |  |          | 37  |   |          |  | 15,424 |  
|Repurchase of shares       |  |          | 1   |   |          |  | 548    |  
|Conversions                |  |          | (38 | ) |          |  | 38     |  
|Effects of public offering |  |          |     |   |          |  | (8,438 | )
|                           |  |          |     |   |          |  |        |  
|At December 31, 2010       |  |          |     |   |          |  | 7,572  |  
|                           |  |          |     |   |          |  |        |  

j) In accordance with Article 20 of the Mexican Corporations Act, at least 5% of the net income of each year must be
appropriated to increase the legal reserve. This practice must be continued each year until the legal reserve reaches at least 20% of the value of capital stock.

k) Earnings per share

The following table shows the calculation of the basic and diluted
earnings per share for the years ended December 31, 2009 and 2010:



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|                                                                                  |  |                 |            |  |      |     |            | 
|--------------------------------------------------------------------------------- |  | --------------- | ---------- |  | ---- | --- | ---------- | 
|                                                                                  |  | At December 31, |           
|                                                                                  |  | 2009            |            |  | 2010 |    
|Net profit for the period attributable to equity holders of the parent            |  | Ps.             | 92,697,553 |  |      | Ps. | 91,123,052 | 
|Weighted average number of common shares outstanding (in millions)                |  |                 | 38,965     |  |      |     | 39,510     | 
|                                                                                  |  |                 |            |  |      |     |            | 
|Basic and diluted earnings per share attributable to equity holders of the parent |  | Ps.             | 2.38       |  |      | Ps. | 2.31       | 
|                                                                                  |  |                 |            |  |      |     |            | 

Subsequent event

On April 27, 2011, on the Companys annual shareholders meeting, the following was approved:

(i) execute a shareholding restructuring by means of a two-to-one stock split to be effective at a future date to be determined by management;

(ii) pay a cash dividend from the balance of the consolidated Net taxed profits account (CUFIN) in the amount of $0.36 pesos, payable in two
installments, for each of the Series AA, A and L shares representing capital stock (including the preferred dividend corresponding to Series L shares), the amount of which is to be adjusted based on
the resolutions to be adopted regarding the stock split referred to in paragraph (i) above, and

(iii) increase the amount of funds
available for the acquisition of the Companys own shares by Ps. 50 billion in the terms set forth in Article 56 of the Securities Trading Act.

20. Income Tax, Asset Tax and Flat-Rate Business Tax

I) Mexico

a) In January 2002, the Ministry of Finance and Public Credit authorized América Móvil to consolidate its tax results with those of its
Mexican subsidiaries. In July 2010, the Company obtained authorization from the Ministry of Finance and Public Credit to consolidate the tax results of CGT and subsidiaries, Telmex and its Mexican subsidiaries, and Telint and its Mexican
subsidiaries.

Tax consolidation in Mexico is a legal mechanism through which taxpayers file a single tax return for all Mexican subsidiaries
and the holding company (in this case, América Móvil as a legal entity) as if they were a single legal entity.

b) Flat-rate
business tax (FRBT)

The FRBT is computed by applying the 17.5% rate (17% for 2009) to income determined on the basis of cash flows, net of
authorized credits.

FRBT is payable only to the extent it exceeds income tax for the same period. (In 2009 and 2010 América
Móvil paid income tax, thus FRBT was not applicable). To determine FRBT payable, income tax paid in a given period is first subtracted from the FRBT of the same period.

c) Corporate tax rate

The income tax rate applicable in Mexico for 2009 and 2010 was 28% and
30%, respectively.

d) An analysis of income tax charged to results of operations for the years ended December 31, 2009 and 2010 is as
follows:



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|                               |  |      |            |   |      |     |            |  
|------------------------------ |  | ---- | ---------- | - | ---- | --- | ---------- | -
|                               |  | 2009 |            |   | 2010 |    
|In Mexico:                     |  |      |            |   |      |     |            |  
|Current year income tax        |  | Ps.  | 27,221,594 |   |      | Ps. | 35,358,801 |  
|Deferred income tax            |  |      | 806,315    |   |      |     | (6,547,719 | )
|Effect of increase in tax rate |  |      | (279,837   | ) |      |     |            |  
|Abroad:                        |  |      |            |   |      |     |            |  
|Current year income tax        |  |      | 13,867,808 |   |      |     | 12,966,253 |  
|Deferred income tax            |  |      | (5,316,713 | ) |      |     | (5,563,716 | )
|                               |  |      |            |   |      |     |            |  
|Total                          |  | Ps.  | 36,299,167 |   |      | Ps. | 36,213,619 |  
|                               |  |      |            |   |      |     |            |  



e) A reconciliation of the corporate income tax rate
to the effective income tax rate recognized by the Company is as follows:



|                                                                 |  |                        |      |    |      |  |      |   
|---------------------------------------------------------------- |  | ---------------------- | ---- | -- | ---- |  | ---- | --
|                                                                 |  | Year ended December 31 |     
|                                                                 |  | 2009                   |      |    | 2010 | 
|Statutory income tax rate in Mexico                              |  |                        | 28.0 | %  |      |  | 30.0 | % 
|Impact of non-deductible and non-taxable items:                  |  |                        |      |    |      |  |      |   
|Tax inflation effect                                             |  |                        | 1.0  | %  |      |  | 1.6  | % 
|Operations of foreign subsidiaries                               |  |                        | (0.7 | )% |      |  | (0.4 | )%
|Other                                                            |  |                        | 1.5  | %  |      |  | 0.4  | % 
|                                                                 |  |                        |      |    |      |  |      |   
|Effective tax rate on Mexican operations                         |  |                        | 29.8 | %  |      |  | 31.6 | % 
|Change in estimated realization of deferred tax assets in Brazil |  |                        | (3.5 | )% |      |  | (4.4 | )%
|Use of tax credits in Brazil                                     |  |                        | (1.3 | )% |      |  | (1.3 | )%
|Revenues and costs of subsidiaries operations                   |  |                        | 0.3  | %  |      |  | 0.9  | % 
|                                                                 |  |                        |      |    |      |  |      |   
|Effective tax rate                                               |  |                        | 25.3 | %  |      |  | 26.8 | % 
|                                                                 |  |                        |      |    |      |  |      |   

f) An analysis of temporary differences giving rise to the net deferred tax liability is as follows:



|                                                              |  |                   |             |   |                 |      |             |   |  |     |             |  
|------------------------------------------------------------- |  | ----------------- | ----------- | - | --------------- | ---- | ----------- | - |  | --- | ----------- | -
|                                                              |  | At January 1,2009 |             |   | At December 31, |     
|                                                              |  |                   | 2009        |   |                 | 2010 |            
|Deferred tax assets                                           |  |                   |             |   |                 |      |             |   |  |     |             |  
|Accrued Liabilities                                           |  | Ps.               | 2,788,744   |   |                 | Ps.  | 3,824,031   |   |  | Ps. | 4,361,987   |  
|Other                                                         |  |                   | 2,426,901   |   |                 |      | 1,804,868   |   |  |     | 2,281,061   |  
|Deferred revenues                                             |  |                   | 2,966,933   |   |                 |      | 2,615,036   |   |  |     | 2,360,447   |  
|Tax losses                                                    |  |                   | 4,378,935   |   |                 |      | 3,974,767   |   |  |     | 880,303     |  
|                                                              |  |                   |             |   |                 |      |             |   |  |     |             |  
|                                                              |  |                   | 12,561,513  |   |                 |      | 12,218,702  |   |  |     | 9,883,798   |  
|Deferred tax liabilities:                                     |  |                   |             |   |                 |      |             |   |  |     |             |  
|Fixed assets                                                  |  |                   | (21,594,051 | ) |                 |      | (20,176,494 | ) |  |     | (18,865,653 | )
|Inventories                                                   |  |                   | (566,305    | ) |                 |      | (548,141    | ) |  |     | (352,768    | )
|Licenses                                                      |  |                   | (17,265     | ) |                 |      | (68,196     | ) |  |     | (393,135    | )
|Deferred effects of tax consolidation in Mexican subsidiaries |  |                   | (7,855,291  | ) |                 |      | (6,380,780  | ) |  |     | (7,097,406  | )



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|                                  |  |     |             |   |  |     |             |   |  |     |             |  
|--------------------------------- |  | --- | ----------- | - |  | --- | ----------- | - |  | --- | ----------- | -
|Forward contracts with affiliated |  |     | (3,889,729  | ) |  |     | (3,531,564  | ) |  |     |             |  
|Royalty advances                  |  |     | (1,630,000  | ) |  |     | (3,030,000  | ) |  |     | (2,530,000  | )
|Pensions                          |  |     | (4,304,012  | ) |  |     | (4,566,155  | ) |  |     | (4,809,996  | )
|Other                             |  |     | (931,067    | ) |  |     | (1,239,135  | ) |  |     | (1,230,793  | )
|                                  |  |     |             |   |  |     |             |   |  |     |             |  
|                                  |  |     | (40,787,720 | ) |  |     | (39,540,465 | ) |  |     | (35,279,751 | )
|Plus:                             |  |     |             |   |  |     |             |   |  |     |             |  
|Other                             |  |     |             |   |  |     | 279,837     |   |  |     | 217,787     |  
|                                  |  |     |             |   |  |     |             |   |  |     |             |  
|Total deferred taxes              |  | Ps. | (28,226,207 | ) |  | Ps. | (27,041,926 | ) |  | Ps. | (25,178,166 | )
|                                  |  |     |             |   |  |     |             |   |  |     |             |  

An analysis of the effects of temporary differences within the deferred tax that was charged to results of operations is as
follows:



|                                            |  |                 |            |   |      |     |            |  
|------------------------------------------- |  | --------------- | ---------- | - | ---- | --- | ---------- | -
|                                            |  | At December 31, |           
|                                            |  | 2009            |            |   | 2010 |    
|Deferred tax assets:                        |  |                 |            |   |      |     |            |  
|Accrued liabilities                         |  | Ps.             | 1,035,287  |   |      | Ps. | 537,956    |  
|Other                                       |  |                 | (1,551,655 | ) |      |     | 476,190    |  
|Deferred revenues                           |  |                 | (351,897   | ) |      |     | (254,589   | )
|Tax losses                                  |  |                 | (404,168   | ) |      |     | (3,094,464 | )
|                                            |  |                 |            |   |      |     |            |  
|                                            |  |                 | (1,272,433 | ) |      |     | (2,334,906 | )
|                                            |  |                 |            |   |      |     |            |  
|                                            |  |                
|Deferred tax liabilities:                   |  |                 |            |   |      |     |            |  
|Fixed assets                                |  |                 | 1,417,557  |   |      |     | 1,310,841  |  
|Inventories                                 |  |                 | 18,164     |   |      |     | 195,373    |  
|Licenses                                    |  |                 | (50,931    | ) |      |     | (324,939   | )
|Forward contracts with affiliated companies |  |                 | 358,165    |   |      |     | 3,531,564  |  
|Royalty advances                            |  |                 | (1,400,000 | ) |      |     | 500,000    |  
|Pensions                                    |  |                 | (262,143   | ) |      |     | (243,841   | )
|Other                                       |  |                 | (308,068   | ) |      |     | 8,342      |  
|                                            |  |                 |            |   |      |     |            |  
|                                            |  |                 | (227,256   | ) |      |     | 4,977,340  |  
|                                            |  |                 |            |   |      |     |            |  
|Plus:                                       |  |                 |            |   |      |     |            |  
|Other                                       |  |                 | 279,837    |   |      |     | (62,050    | )
|Income tax from tax consolidation           |  |                 | 591,514    |   |      |     | (716,626   | )
|                                            |  |                 |            |   |      |     |            |  
|Total deferred taxes                        |  | Ps.             | (628,338   | ) |      | Ps. | 1,863,758  |  
|                                            |  |                 |            |   |      |     |            |  

The effects of temporary differences giving rise to the deferred tax asset at December 31, 2009 and 2010 is as follows:



|                         |  |               |            |   |                 |     |            |      |  |     |            |  
|------------------------ |  | ------------- | ---------- | - | --------------- | --- | ---------- | ---- |  | --- | ---------- | -
|                         |  | At January 1, |            |   | At December 31, |    
|                         |  | 2009          |            |   | 2009            |     |            | 2010 | 
|Deferred tax assets:     |  |               |            |   |                 |     |            |      |  |     |            |  
|Liability provisions     |  | Ps.           | 4,813,314  |   |                 | Ps. | 10,566,021 |      |  | Ps. | 12,364,989 |  
|Deferred revenues        |  |               | 180,054    |   |                 |     | 95,042     |      |  |     | 486,489    |  
|Other                    |  |               | 2,588,526  |   |                 |     | 3,595,607  |      |  |     | 4,225,453  |  
|Tax losses               |  |               | 5,783,639  |   |                 |     | 6,681,288  |      |  |     | 16,027,272 |  
|                         |  |               |            |   |                 |     |            |      |  |     |            |  
|                         |  |               | 13,365,533 |   |                 |     | 20,937,958 |      |  |     | 33,104,203 |  
|                         |  |               |            |   |                 |     |            |      |  |     |            |  
|Deferred tax liabilities |  |               |            |   |                 |     |            |      |  |     |            |  
|Fixed assets             |  |               | 2,865,850  |   |                 |     | 1,757,818  |      |  |     | 192,520    |  
|Licenses                 |  |               | (716,855   | ) |                 |     | (361,709   | )    |  |     | (493,747   | )
|Other                    |  |               | (210,180   | ) |                 |     | (25,635    | )    |  |     | (34,203    | )
|                         |  |               |            |   |                 |     |            |      |  |     |            |  
|                         |  |               | 1,938,815  |   |                 |     | 1,370,474  |      |  |     | (335,430   | )
|                         |  |               |            |   |                 |     |            |      |  |     |            |  
|Total deferred taxes     |  | Ps.           | 15,304,348 |   |                 | Ps. | 22,308,432 |      |  | Ps. | 32,768,773 |  
|                         |  |               |            |   |                 |     |            |      |  |     |            |  



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At December 31, 2009 and 2010, the above table includes the deferred tax assets of TracFone, Puerto
Rico, Argentina, Colombia, Honduras, Guatemala and Brazil.

An analysis of the effects of temporary differences within the deferred tax that
was charged to results of operations is as follows:



|                          |  |                 |            |   |      |     |            |  
|------------------------- |  | --------------- | ---------- | - | ---- | --- | ---------- | -
|                          |  | At December 31, |           
|                          |  | 2009            |            |   | 2010 |    
|Deferred tax assets:      |  |                 |            |   |      |     |            |  
|Accrued Liabilities       |  | Ps.             | 4,167,196  |   |      | Ps. | 1,798,968  |  
|Deferred revenues         |  |                 | (85,012    | ) |      |     | 317,443    |  
|Other                     |  |                 | 1,007,082  |   |      |     | 343,207    |  
|Tax losses                |  |                 | 897,649    |   |      |     | 9,546,592  |  
|                          |  |                 |            |   |      |     |            |  
|                          |  |                 | 5,986,915  |   |      |     | 12,006,210 |  
|                          |  |                 |            |   |      |     |            |  
|Deferred tax liabilities: |  |                 |            |   |      |     |            |  
|Fixed assets              |  |                 | (1,108,032 | ) |      |     | (1,565,298 | )
|Licenses                  |  |                 | 355,145    |   |      |     | (132,038   | )
|Other                     |  |                 | 184,545    |   |      |     | (61,197    | )
|                          |  |                 |            |   |      |     |            |  
|                          |  |                 | (568,342   | ) |      |     | (1,758,533 | )
|                          |  |                 |            |   |      |     |            |  
|Total deferred taxes      |  | Ps.             | 5,418,573  |   |      | Ps. | 10,247,677 |  
|                          |  |                 |            |   |      |     |            |  

Deferred tax assets are recognized for tax losses carryforwards to the extent that the realization of the related tax
benefit through future taxable profits is probable, as well as for other temporary items. The benefit in taxes on profits for the years ended December 31, 2009 and 2010 was Ps. 6,419,448 and Ps. 9,038,423, respectively, and is shown as a credit
in deferred income tax.

g) Changes in the Mexican tax environment effective in 2010

On December 7, 2009, a tax reform was approved that includes an increase in the corporate income tax rate from 28% to 30% from 2010 until 2012, which will then decrease to 29% for 2013 and 28% for
2014 and thereafter.

The effect of the change in income tax rate in 2009 was a decrease of Ps. 279,837 in the net deferred tax liability for
rate scaling, since the reversal of certain differences between the book and tax values of assets and liabilities was calculated at the statutory rate of 30%.

Tax consolidation

Furthermore, there is a mechanism for the partial or total so-called
recapture of certain items that, under the former tax consolidation regime, were deferred from 2004 until 2009. These items are as follows:



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|i) | Tax losses of the controlling company or controlled companies
|-- | -------------------------------------------------------------



|ii) | Loss on sale of shares issued by controlling companies
|--- | ------------------------------------------------------



|iii) | Book dividends paid from sources other than the CUFIN
|---- | -----------------------------------------------------



|iv) | Adjustments from changes in equity interest percentages
|--- | -------------------------------------------------------



|v) | As of 2010, the recapture must also include CUFIN differences between controlled companies and their controlling company.
|-- | -------------------------------------------------------------------------------------------------------------------------

In the case of a partial deconsolidation, the items mentioned above must be remitted based on the following payment schedule:



|     |  |                        |    |  
|---- |  | ---------------------- | -- | -
|Year |  | Portion to be remitted |   
|2011 |  |                        | 25 | %
|2012 |  |                        | 20 | %
|2013 |  |                        | 15 | %
|2014 |  |                        | 15 | %

In the case of the Company, the deferred
tax consolidation items are represented mainly by tax losses utilized in the tax consolidation that have yet to be utilized individually on a separate entity basis by the controlled and controlling companies.

h) At December 31, 2010, the balance of the Restated contributed capital account (CUCA) is Ps. 325,684,036 and the CUFIN balance is Ps.181,169,045.
Both balances include the effects of the public tender offers.

II) Foreign Subsidiaries

a) Results of operations

The foreign
subsidiaries determine their taxes on profits based on their individual taxable income, in accordance with the specific tax regimes of each country. The combined income before taxes and the combined provision for taxes of such subsidiaries in 2009
and 2010 are as follows:



|                             |  |                 |            |  |      |     |            | 
|---------------------------- |  | --------------- | ---------- |  | ---- | --- | ---------- | 
|                             |  | At December 31, |           
|                             |  | 2009            |            |  | 2010 |    
|Combined income before taxes |  | Ps.             | 60,109,525 |  |      | Ps. | 44,996,818 | 
|Combined tax provision       |  |                 | 8,551,095  |  |      |     | 7,402,537  | 

b) Tax losses

At December 31, 2010, the available tax loss carryforward of the subsidiaries of América Móvil is as follows:



|        |  |                                                               |           |  |              |     |         | 
|------- |  | ------------------------------------------------------------- | --------- |  | ------------ | --- | ------- | 
|Country |  | Balance of availabletax
losscarryforwards atDecember 31, 2010 |           |  | Tax benefits |    
|Chile   |  | Ps.                                                           | 5,670,861 |  |              | Ps. | 964,046 | 



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|            |  |     |            |  |  |     |            | 
|----------- |  | --- | ---------- |  |  | --- | ---------- | 
|Brazil      |  |     | 33,112,511 |  |  |     | 11,589,379 | 
|Mexico      |  |     | 13,722,290 |  |  |     | 3,979,465  | 
|Puerto Rico |  |     | 719,326    |  |  |     | 251,764    | 
|Argentina   |  |     | 316,610    |  |  |     | 110,814    | 
|Ecuador     |  |     | 47,971     |  |  |     | 11,993     | 
|USA         |  |     | 326        |  |  |     | 114        | 
|            |  |     |            |  |  |     |            | 
|Total       |  | Ps. | 53,589,895 |  |  | Ps. | 16,907,575 | 
|            |  |     |            |  |  |     |            | 

The tax loss carryforwards in the different countries in which the Company operates have the following terms and
characteristics:

i) In Brazil there is no expiration of the tax loss carryforwards; however, the carryforward amount in each year may not
exceed 30% of the taxable income for such year. Consequently, in the year in which taxable income is generated, the effective tax rate is 25% rather than the 34% corporate tax rate.

ii) In Chile, tax loss carryforwards have no expiration date and the corporate tax rate in that country is 17%. Consequently, at the time tax losses are realized, taxpayers enjoy a benefit of only 17% of
the amount of the loss generated.



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21. Segments

América Móvil operates in different countries. As mentioned in Note 1, the Company has operations in Mexico, Guatemala, Nicaragua, Ecuador, El Salvador, Brazil, Argentina, Colombia, United
States, Honduras, Chile, Peru, Paraguay, Uruguay, Dominican Republic, Puerto Rico, Jamaica and Panama. The accounting policies for the segments are the same as those described in Note 2.

The Company management analyzes the financial and operating information by geographical segment, except for Mexico, which shows América Móvil and Telmex as two segments. All significant
operative segments that represent more than 10% of consolidated revenues, more than 10% of net earnings and more than 10% of consolidated assets, are presented separately.



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|                                   |  |           |               |  |        |  |             |        |  |  |                 |   |  |                   |            |  |           |  |            |                   |  |  |            |  |  |              |            |  |              |  |            |                   |  |  |            |  |  |  |                |   |  |  |             | 
|---------------------------------- |  | --------- | ------------- |  | ------ |  | ----------- | ------ |  |  | --------------- | - |  | ----------------- | ---------- |  | --------- |  | ---------- | ----------------- |  |  | ---------- |  |  | ------------ | ---------- |  | ------------ |  | ---------- | ----------------- |  |  | ---------- |  |  |  | -------------- | - |  |  | ----------- | 
|                                   |  | Mexico(1) |               |  | Telmex |  |             | Brazil |  |  | SouthernCone(2) |   |  | ColombiaandPanama |            |  | Andean(3) |  |            | CentralAmerica(4) |  |  | U.S.A.(5)  |  |  | Caribbean(6) |            |  | Eliminations |  |            | Consolidatedtotal | 
|At December 31, 2009               |  |           |               |  |        |  |             |        |  |  |                 |   |  |                   |            |  |           |  |            |                   |  |  |            |  |  |              |            |  |              |  |            |                   |  |  |            |  |  |  |                |   |  |  |             | 
|Operating revenues                 |  |           | 146,094,630   |  |        |  | 118,348,207 |        |  |  | 140,676,456     |   |  |                   | 39,821,928 |  |           |  | 42,436,633 |                   |  |  | 26,843,708 |  |  |              | 17,956,475 |  |              |  | 22,654,796 |                   |  |  | 28,209,958 |  |  |  | (21,788,193    | ) |  |  | 561,254,598 | 
|Depreciation and amortization      |  |           | 8,138,967     |  |        |  | 17,926,053  |        |  |  | 26,749,243      |   |  |                   | 4,776,322  |  |           |  | 7,670,435  |                   |  |  | 3,326,147  |  |  |              | 5,993,995  |  |              |  | 385,211    |                   |  |  | 5,010,660  |  |  |  | (72,729        | ) |  |  | 79,904,304  | 
|Operating income                   |  |           | 72,995,015    |  |        |  | 32,505,121  |        |  |  | 15,488,637      |   |  |                   | 4,916,914  |  |           |  | 10,885,784 |                   |  |  | 6,415,691  |  |  |              | 1,280,197  |  |              |  | 797,039    |                   |  |  | 4,085,015  |  |  |  | (557,889       | ) |  |  | 148,811,524 | 
|Interest income                    |  |           | 3,432,415     |  |        |  | 711,244     |        |  |  | 1,622,564       |   |  |                   | 342,606    |  |           |  | 435,046    |                   |  |  | 338,296    |  |  |              | 235,672    |  |              |  | 81,617     |                   |  |  | 362,569    |  |  |  | (3,895,225     | ) |  |  | 3,666,804   | 
|Interest expense                   |  |           | 9,254,055     |  |        |  | 4,240,662   |        |  |  | 2,738,714       |   |  |                   | 437,759    |  |           |  | 628,507    |                   |  |  | 629,581    |  |  |              | 424,705    |  |              |  |            |                   |  |  | 77,484     |  |  |  | (3,835,974     | ) |  |  | 14,595,493  | 
|Income tax                         |  |           | 19,084,660    |  |        |  | 8,342,892   |        |  |  | (1,113,559      | ) |  |                   | 2,096,211  |  |           |  | 3,748,996  |                   |  |  | 2,189,629  |  |  |              | 1,095,202  |  |              |  | 694,044    |                   |  |  | 161,092    |  |  |  |                |   |  |  | 36,299,167  | 
|Segment assets                     |  |           | 1,051,118,951 |  |        |  | 176,762,891 |        |  |  | 254,291,525     |   |  |                   | 56,436,529 |  |           |  | 70,930,684 |                   |  |  | 45,074,524 |  |  |              | 39,002,035 |  |              |  | 9,816,822  |                   |  |  | 66,724,185 |  |  |  | (962,824,533   | ) |  |  | 807,333,613 | 
|Plant, property and equipment, net |  |           | 43,555,516    |  |        |  | 104,304,749 |        |  |  | 121,066,926     |   |  |                   | 33,992,964 |  |           |  | 38,611,176 |                   |  |  | 18,879,659 |  |  |              | 27,156,572 |  |              |  | 673,774    |                   |  |  | 30,491,296 |  |  |  |                |   |  |  | 418,732,632 | 
|Goodwill,                          |  |           | 9,342,885     |  |        |  |             |        |  |  | 3,392,000       |   |  |                   | 2,741,017  |  |           |  | 12,204,428 |                   |  |  | 4,353,875  |  |  |              | 4,609,315  |  |              |  | 781,201    |                   |  |  | 31,771,445 |  |  |  |                |   |  |  | 69,196,166  | 
|Trademarks, net                    |  |           | 45,012        |  |        |  |             |        |  |  | 2,307,555       |   |  |                   | 542,987    |  |           |  | 1,320,057  |                   |  |  | 5,480      |  |  |              | 639,555    |  |              |  |            |                   |  |  | 673,510    |  |  |  |                |   |  |  | 5,534,156   | 
|Licenses and rights of use, net    |  |           | 2,570,095     |  |        |  | 739,352     |        |  |  | 32,959,324      |   |  |                   | 1,746,682  |  |           |  | 5,292,351  |                   |  |  | 5,087,610  |  |  |              | 484,675    |  |              |  |            |                   |  |  | 1,651,593  |  |  |  |                |   |  |  | 50,531,682  | 
|Capital expenditure                |  |           | 8,254,000     |  |        |  | 9,676,000   |        |  |  | 25,039,019      |   |  |                   | 7,312,000  |  |           |  | 11,469,000 |                   |  |  | 4,672,000  |  |  |              | 6,120,000  |  |              |  | 462,000    |                   |  |  | 6,826,000  |  |  |  |                |   |  |  | 79,831,019  | 
|At December 31, 2010               |  |           |               |  |        |  |             |        |  |  |                 |   |  |                   |            |  |           |  |            |                   |  |  |            |  |  |              |            |  |              |  |            |                   |  |  |            |  |  |  |                |   |  |  |             | 
|Operating revenues                 |  |           | 157,555,171   |  |        |  | 114,080,323 |        |  |  | 154,308,757     |   |  |                   | 43,465,809 |  |           |  | 48,892,601 |                   |  |  | 29,483,786 |  |  |              | 17,154,319 |  |              |  | 35,561,762 |                   |  |  | 26,992,878 |  |  |  | (19,639,728    | ) |  |  | 607,855,678 | 
|Depreciation and amortization      |  |           | 10,261,103    |  |        |  | 17,500,370  |        |  |  | 33,525,620      |   |  |                   | 5,537,205  |  |           |  | 9,585,686  |                   |  |  | 3,545,006  |  |  |              | 5,998,141  |  |              |  | 343,792    |                   |  |  | 4,826,214  |  |  |  | (51,810        | ) |  |  | 91,071,327  | 
|Operating income                   |  |           | 76,090,032    |  |        |  | 27,991,616  |        |  |  | 13,843,292      |   |  |                   | 7,530,880  |  |           |  | 12,513,047 |                   |  |  | 9,076,550  |  |  |              | 783,309    |  |              |  | 1,617,152  |                   |  |  | 3,304,015  |  |  |  | (428,484       | ) |  |  | 152,321,409 | 
|Interest income                    |  |           | 4,275,008     |  |        |  | 583,762     |        |  |  | 2,615,814       |   |  |                   | 760,644    |  |           |  | 525,418    |                   |  |  | 408,603    |  |  |              | 160,038    |  |              |  | 82,490     |                   |  |  | 215,198    |  |  |  | (4,825,436     | ) |  |  | 4,801,539   | 
|Interest expense                   |  |           | 13,847,898    |  |        |  | 3,443,522   |        |  |  | 3,135,696       |   |  |                   | 457,751    |  |           |  | 413,664    |                   |  |  | 610,604    |  |  |              | 346,931    |  |              |  |            |                   |  |  | 35,279     |  |  |  | (5,010,610     | ) |  |  | 17,280,735  | 
|Income tax                         |  |           | 19,943,409    |  |        |  | 8,325,091   |        |  |  | (3,286,036      | ) |  |                   | 3,252,464  |  |           |  | 3,316,469  |                   |  |  | 2,838,429  |  |  |              | 1,196,814  |  |              |  | 373,696    |                   |  |  | 253,283    |  |  |  |                |   |  |  | 36,213,619  | 
|Segment assets                     |  |           | 1,163,895,654 |  |        |  | 155,800,277 |        |  |  | 253,677,418     |   |  |                   | 78,749,869 |  |           |  | 86,964,529 |                   |  |  | 65,392,559 |  |  |              | 42,376,671 |  |              |  | 12,560,676 |                   |  |  | 65,246,778 |  |  |  | (1,047,969,897 | ) |  |  | 876,694,534 | 
|Plant, property and equipment, net |  |           | 40,881,732    |  |        |  | 99,893,002  |        |  |  | 123,921,091     |   |  |                   | 35,790,891 |  |           |  | 35,755,174 |                   |  |  | 18,636,393 |  |  |              | 26,860,660 |  |              |  | 718,744    |                   |  |  | 29,362,700 |  |  |  |                |   |  |  | 411,820,387 | 
|Goodwill,                          |  |           | 9,747,092     |  |        |  | 103,289     |        |  |  | 3,354,681       |   |  |                   | 2,729,994  |  |           |  | 13,892,928 |                   |  |  | 3,947,450  |  |  |              | 4,590,890  |  |              |  | 781,201    |                   |  |  | 31,771,442 |  |  |  |                |   |  |  | 70,918,967  | 
|Trademarks, net                    |  |           | 26,549        |  |        |  |             |        |  |  | 1,913,567       |   |  |                   | 416,023    |  |           |  | 1,087,300  |                   |  |  | 3,975      |  |  |              | 499,950    |  |              |  |            |                   |  |  | 584,513    |  |  |  |                |   |  |  | 4,531,877   | 
|Licenses and rights of use, net    |  |           | 6,106,148     |  |        |  | 221,010     |        |  |  | 25,374,188      |   |  |                   | 1,514,653  |  |           |  | 4,955,713  |                   |  |  | 4,497,609  |  |  |              | 237,157    |  |              |  |            |                   |  |  | 1,614,380  |  |  |  |                |   |  |  | 44,520,858  | 
|Capital expenditure                |  |           | 8,179,000     |  |        |  | 9,460,000   |        |  |  | 30,889,638      |   |  |                   | 9,709,000  |  |           |  | 7,522,000  |                   |  |  | 3,709,000  |  |  |              | 6,195,000  |  |              |  | 435,000    |                   |  |  | 5,841,000  |  |  |  |                |   |  |  | 81,941,638  | 



|(1) | Mexico includes Telcel and corporate operations and assets
|--- | ----------------------------------------------------------

|(2) | Southern Cone includes Argentina, Chile, Paraguay and Uruguay
|--- | -------------------------------------------------------------

|(3) | Andean includes Ecuador and Peru.
|--- | ---------------------------------

|(4) | Central America includes Guatemala, El Salvador, Honduras and Nicaragua.
|--- | ------------------------------------------------------------------------

|(5) | Excludes Puerto Rico
|--- | --------------------

|(6) | Caribbean includes the Dominican Republic, Puerto Rico and Jamaica
|--- | ------------------------------------------------------------------



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##### Table of Contents

22. Subsequent Events

a) On January 18, 2011, Embrapar informed the investing public that regarding the public tender offer made by its subsidiary, Embratel, for the acquisition of 100% of the preferred shares (except for
those owned by Embrapar) of NET, the period for shareholders to exercise their rights to sell their remaining outstanding preferred shares of NET, which commenced on October 13, 2010, had expired on January 13, 2011.

From December 31, 2010 through the conclusion of the public tender offer, Embratels equity interest in NET increased from 215,926,880 to
223,080,448 preferred shares. As a result of these acquisitions, Telints direct and indirect equity interest in NET is now 89.8%.

b) On
March 8, 2011, TELMEX announced that its Board of Directors had approved a corporate restructuring to divide the business into two companies, one of which is to be called TELMEX Social and shall provide telecommunications and interconnection
services in marginalized and rural areas in which competitors have failed to invest, and the other shall provide these services in the other areas of Mexico. As a result of this restructuring, the assets, liabilities and shareholders equity of
Telmex will be divided into the different businesses, though the acquired labor rights of each of the companies employees shall not be affected by this change.

The restructuring shall be subject to obtaining any approval required from the Ministry of Communications and Transportation, as well as any other authorization and confirmation required from other
relevant competent authorities and government agencies, and any corporate approvals that may be necessary.

c) On April 11, 2011
América Móvil announced the result of the public tender offer for the acquisition of up to 3.18% of the shares of Telmex Internacional, S.A.B. de C.V. (Telint) with the motive of the cancellation of the registration in the National
Securities Registry of Telints capital stock. This tender offer was initiated to acquire up to the total number of outstanding shares of Telint, excluding Telint shares owned directly and indirectly by América Móvil.

In accordance with the final figures provided by the underwriter, Inversora Bursátil, S.A. de C.V., Casa de Bolsa, Grupo Financiero Inbursa, a
total of 6,616,901 Series A shares and 44,115,166 Series L shares, which together represent 0.28% of the outstanding shares of Telint, were acquired by América Móvil through the public tender. As a result, América
Móvils equity interest in the capital stock of Telint increased to 97.10%.

América Móvil and Telint will continue
taking the necessary actions to obtain from the Mexican National Banking and Securities Commission the official letter of authorization for the removal of Telints shares from the National Securities Registry and thereafter proceed with the
delisting of Telint from the Mexican Stock Exchange.

23. Supplemental Guarantor Information

As mentioned in Note 16, the Company has issued senior notes in the United States. These notes are fully and unconditionally guaranteed by Telcel.

Consolidating Condensed Financial Information



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The following consolidating information presents condensed consolidating balance sheets as of
January 1, 2009 and December 31, 2009 and 2010 and condensed consolidating statements of income and cash flows for each of the two years in the period ended December 31, 2009 and 2010 of the Company and Telcel (the wholly-owned
Guarantor Subsidiary). These statements are prepared in accordance with IFRS, as issued by the IASB, with the exception that the subsidiaries are accounted for as investments under the equity method rather than being consolidated. The
guarantees of the Guarantor are full and unconditional.

The Companys consolidating condensed financial information for the
(i) Company; (ii) its wholly-owned subsidiary Telcel (on standalone basis), which is a wholly and unconditional guarantor under the Senior Notes; (iii) the combined non-guarantor subsidiaries; iv) eliminations and v) the
Companys consolidated financial statements are as follows:



|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|------------------------------------------------------- |  | ----------------------- | ----------- |  | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ |  |  | ----------------- | ------------ | - |  | --- | ----------- | 
|                                                        |  | Parent                  |             |  | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |  |  | ConsolidatedTotal |             
|                                                        |  | As of January 1, 2009   |             |  |                                 |     |             |                                   | 
|Assets:                                                 |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Cash and cash equivalents                               |  | Ps.                     | 2,818,138   |  |                                 | Ps. | 68,061      |                                   |  | Ps. | 33,399,497   |  |  |                   |              |   |  | Ps. | 36,285,696  | 
|Accounts receivable, net                                |  |                         | 15,835,097  |  |                                 |     | 10,837,824  |                                   |  |     | 93,346,656   |  |  |                   |              |   |  |     | 120,019,577 | 
|Related parties                                         |  |                         | 2,671,532   |  |                                 |     | 43,788,755  |                                   |  |     | 146,910,317  |  |  | Ps.               | (191,119,659 | ) |  |     | 2,250,945   | 
|Inventories, net                                        |  |                         |             |  |                                 |     | 13,213,184  |                                   |  |     | 27,971,153   |  |  |                   | (5,487,964   | ) |  |     | 35,696,373  | 
|Other current assets, net                               |  |                         |             |  |                                 |     | 374,967     |                                   |  |     | 7,611,602    |  |  |                   |              |   |  |     | 7,986,569   | 
|Plant, property and equipment, net                      |  |                         |             |  |                                 |     | 18,574,776  |                                   |  |     | 371,952,981  |  |  |                   |              |   |  |     | 390,527,757 | 
|Investments in associated companies and others          |  |                         | 350,074,547 |  |                                 |     | 37,617,832  |                                   |  |     | 47,472,481   |  |  |                   | (423,286,921 | ) |  |     | 11,877,939  | 
|Intangible assets and other non-current assets, net     |  |                         | 365,236     |  |                                 |     | 7,058,587   |                                   |  |     | 141,078,211  |  |  |                   | (20,555      | ) |  |     | 148,481,479 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Total assets                                            |  | Ps.                     | 371,764,550 |  |                                 | Ps. | 131,533,986 |                                   |  | Ps. | 869,742,898  |  |  | Ps.               | (619,915,099 | ) |  | Ps. | 753,126,335 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Liabilities:                                            |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Short-term debt and current portion of long-term debt   |  | Ps.                     | 19,663,882  |  |                                 |     |             |                                   |  | Ps. | 48,694,277   |  |  |                   |              |   |  | Ps. | 68,358,159  | 
|Current liabilities                                     |  |                         | 56,657,539  |  |                                 |     | 95,282,944  |                                   |  |     | 197,911,243  |  |  |                   | (190,532,590 | ) |  |     | 159,319,136 | 
|Long-term debt                                          |  |                         | 103,428,129 |  |                                 |     |             |                                   |  |     | 138,929,650  |  |  |                   |              |   |  |     | 242,357,779 | 
|Other non-current liabilities                           |  |                         | 9,948,574   |  |                                 |     | 635,945     |                                   |  |     | 32,307,847   |  |  |                   | (587,069     | ) |  |     | 42,305,297  | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Total liabilities                                       |  |                         | 189,698,124 |  |                                 |     | 95,918,889  |                                   |  |     | 417,843,017  |  |  |                   | (191,119,659 | ) |  |     | 512,340,371 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Equity attributable to equity holders of parent company |  |                         | 182,066,426 |  |                                 |     | 35,615,097  |                                   |  |     | 392,840,320  |  |  |                   | (428,455,417 | ) |  |     | 182,066,426 | 
|Non-controlling interest                                |  |                         |             |  |                                 |     |             |                                   |  |     | 59,059,561   |  |  |                   | (340,023     | ) |  |     | 58,719,538  | 
|Total equity                                            |  |                         | 182,066,426 |  |                                 |     | 35,615,097  |                                   |  |     | 451,899,881  |  |  |                   | (428,795,440 | ) |  |     | 240,785,964 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Total liabilities and equity                            |  | Ps.                     | 371,764,550 |  |                                 | Ps. | 131,533,986 |                                   |  | Ps. | 869,742,898  |  |  | Ps.               | (619,915,099 | ) |  | Ps. | 753,126,335 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|                                                        |  |                         |             |  |                                
|                                                        |  | Parent                  |             |  | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |  |  | ConsolidatedTotal |             
|                                                        |  | As of December 31, 2009 |             |  |                                 |     |             |                                   | 
|Assets:                                                 |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Cash and cash equivalents                               |  | Ps.                     | 2,115,451   |  |                                 | Ps. | 405,289     |                                   |  | Ps. | 57,245,793   |  |  |                   |              |   |  | Ps. | 59,766,533  | 



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|                                                        |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 
|------------------------------------------------------- |  | --- | ----------- |  |  | --- | ----------- |  |  | --- | ----------- |  |  | --- | ------------ | - |  | --- | ----------- | 
|Accounts receivable, net                                |  |     | 15,912,622  |  |  |     | 8,999,724   |  |  |     | 80,256,977  |  |  |     |              |   |  |     | 105,169,323 | 
|Related parties                                         |  |     | 862,444     |  |  |     | 43,082,824  |  |  |     | 171,247,201 |  |  | Ps. | (212,083,419 | ) |  |     | 3,109,050   | 
|Inventories, net                                        |  |     |             |  |  |     | 8,470,032   |  |  |     | 17,339,487  |  |  |     | (2,053,994   | ) |  |     | 23,755,525  | 
|Other current assets, net                               |  |     |             |  |  |     | 365,406     |  |  |     | 8,032,436   |  |  |     |              |   |  |     | 8,397,842   | 
|Plant, property and equipment, net                      |  |     |             |  |  |     | 17,023,028  |  |  |     | 401,709,604 |  |  |     |              |   |  |     | 418,732,632 | 
|Investments in associated companies and others          |  |     | 441,304,886 |  |  |     | 36,066,547  |  |  |     | 59,847,054  |  |  |     | (519,660,853 | ) |  |     | 17,557,634  | 
|Intangible assets and other non-current assets, net     |  |     | 261,055     |  |  |     | 5,374,260   |  |  |     | 165,209,759 |  |  |     |              |   |  |     | 170,845,074 | 
|                                                        |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 
|Total assets                                            |  | Ps. | 460,456,458 |  |  | Ps. | 119,787,110 |  |  | Ps. | 960,888,311 |  |  | Ps. | (733,798,266 | ) |  | Ps. | 807,333,613 | 
|                                                        |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 
|Liabilities:                                            |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 
|Short-term debt and current portion of long-term debt   |  | Ps. | 5,114,154   |  |  |     |             |  |  | Ps. | 39,853,036  |  |  |     |              |   |  | Ps. | 44,967,190  | 
|Current liabilities                                     |  |     | 115,500,051 |  |  |     | 70,518,434  |  |  |     | 195,785,678 |  |  |     | (211,962,213 | ) |  |     | 169,841,950 | 
|Long-term debt                                          |  |     | 88,793,946  |  |  |     |             |  |  |     | 143,480,543 |  |  |     |              |   |  |     | 232,274,489 | 
|Other non-current liabilities                           |  |     | 7,183,539   |  |  |     | 6,979,256   |  |  |     | 32,410,235  |  |  |     | (121,206     | ) |  |     | 46,451,824  | 
|                                                        |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 
|Total liabilities                                       |  |     | 216,591,690 |  |  |     | 77,497,690  |  |  |     | 411,529,492 |  |  |     | (212,083,419 | ) |  |     | 493,535,453 | 
|                                                        |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 
|Equity attributable to equity holders of parent company |  |     | 243,864,768 |  |  |     | 42,289,420  |  |  |     | 479,309,885 |  |  |     | (521,599,305 | ) |  |     | 243,864,768 | 
|Non-controlling interest                                |  |     |             |  |  |     |             |  |  |     | 70,048,934  |  |  |     | (115,542     | ) |  |     | 69,933,392  | 
|Total equity                                            |  |     | 243,864,768 |  |  |     | 42,289,420  |  |  |     | 549,358,819 |  |  |     | (521,714,847 | ) |  |     | 313,798,160 | 
|                                                        |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 
|Total liabilities and equity                            |  | Ps. | 460,456,458 |  |  | Ps. | 119,787,110 |  |  | Ps. | 960,888,311 |  |  | Ps. | (733,798,266 | ) |  | Ps. | 807,333,613 | 
|                                                        |  |     |             |  |  |     |             |  |  |     |             |  |  |     |              |   |  |     |             | 



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##### Table of Contents

|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|------------------------------------------------------- |  | ----------------------- | ----------- |  | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ |  |  | ----------------- | ------------ | - |  | --- | ----------- | 
|                                                        |  | Parent                  |             |  | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |  |  | ConsolidatedTotal |             
|                                                        |  | As of December 31, 2010 |             |  |                                 |     |             |                                   | 
|Assets:                                                 |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Cash and cash equivalents                               |  | Ps.                     | 52,558,770  |  |                                 | Ps. | 878,844     |                                   |  | Ps. | 42,500,851   |  |  |                   |              |   |  | Ps. | 95,938,465  | 
|                                                        |  |                         |             |  |                                
|Accounts receivable, net                                |  |                         | 25,464,621  |  |                                 |     | 12,201,315  |                                   |  |     | 60,819,572   |  |  |                   |              |   |  |     | 98,485,508  | 
|Related parties                                         |  |                         | 125,937,905 |  |                                 |     | 38,632,143  |                                   |  |     | 212,206,859  |  |  | Ps.               | (373,205,871 | ) |  |     | 3,571,036   | 
|Inventories, net                                        |  |                         |             |  |                                 |     | 9,706,438   |                                   |  |     | 20,306,056   |  |  |                   | (3,930,964   | ) |  |     | 26,081,530  | 
|Other current assets                                    |  |                         |             |  |                                 |     | 391,277     |                                   |  |     | 9,244,156    |  |  |                   |              |   |  |     | 9,635,433   | 
|Plant, property and equipment, net                      |  |                         | 9,800,000   |  |                                 |     | 13,518,033  |                                   |  |     | 391,317,955  |  |  |                   | (2,815,601   | ) |  |     | 411,820,387 | 
|Investments in associated companies and others          |  |                         | 439,292,469 |  |                                 |     | 70,950,867  |                                   |  |     | 36,472,551   |  |  |                   | (496,176,432 | ) |  |     | 50,539,455  | 
|Intangible assets and other non-current assets, net     |  |                         | 2,447,594   |  |                                 |     | 7,637,916   |                                   |  |     | 170,537,210  |  |  |                   |              |   |  |     | 180,622,720 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Total assets                                            |  | Ps.                     | 655,501,359 |  |                                 | Ps. | 153,916,833 |                                   |  | Ps. | 943,405,210  |  |  | Ps.               | (876,128,868 | ) |  | Ps. | 876,694,534 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Liabilities:                                            |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Short-term debt and current portion of long-term debt   |  | Ps.                     | 1,583,208   |  |                                 |     |             |                                   |  | Ps. | 7,455,996    |  |  |                   |              |   |  | Ps. | 9,039,204   | 
|Current liabilities                                     |  |                         | 140,492,410 |  |                                 |     | 166,596,363 |                                   |  |     | 251,013,573  |  |  |                   | (362,598,467 | ) |  |     | 195,503,879 | 
|Long-term debt                                          |  |                         | 200,772,926 |  |                                 |     |             |                                   |  |     | 93,288,026   |  |  |                   |              |   |  |     | 294,060,952 | 
|Other non-current liabilities                           |  |                         | 5,000,832   |  |                                 |     | 1,387,374   |                                   |  |     | 46,272,526   |  |  |                   | (10,607,403  | ) |  |     | 42,053,329  | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Total liabilities                                       |  |                         | 347,849,376 |  |                                 |     | 167,983,737 |                                   |  |     | 398,030,121  |  |  |                   | (373,205,870 | ) |  |     | 540,657,364 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Equity attributable to equity holders of parent company |  |                         | 307,651,983 |  |                                 |     | (14,066,904 | )                                 |  |     | 471,949,524  |  |  |                   | (457,882,620 | ) |  |     | 307,651,983 | 
|Non-controlling interest                                |  |                         |             |  |                                 |     |             |                                   |  |     | 73,425,565   |  |  |                   | (45,040,378  | ) |  |     | 28,385,187  | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Total equity                                            |  |                         | 307,651,983 |  |                                 |     | (14,066,904 | )                                 |  |     | 545,375,089  |  |  |                   | (502,922,998 | ) |  |     | 336,037,170 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 
|Total liabilities and equity                            |  | Ps.                     | 655,501,359 |  |                                 | Ps. | 153,916,833 |                                   |  | Ps. | 943,405,210  |  |  | Ps.               | (876,128,868 | ) |  | Ps. | 876,694,534 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                   |              |   |  |     |             | 



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##### Table of Contents

|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|--------------------------------------------------- |  | ------------------------------------ | ------------ | - | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ------------ | - |  | --- | ------------ | -
|                                                    |  | Parent                               |              |   | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |             
|Condensed consolidating statements of income:       | 
|                                                    |  |                                      |             
|                                                    |  | For the year ended December 31, 2009 |              |   |                                 |     |             |                                   | 
|                                                    |  |                                      |              |   |                                
|Total revenues                                      |  |                                      |              |   |                                 | Ps. | 106,157,444 |                                   |  | Ps. | 515,816,501  |   |  | Ps.               | (60,719,347  | ) |  | Ps. | 561,254,598  |  
|Total cost and operating expenses                   |  | Ps.                                  | 1,563,689    |   |                                 |     | 94,307,750  |                                   |  |     | 378,884,142  |   |  |                   | (62,312,507  | ) |  |     | 412,443,074  |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Operating (loss) income                             |  |                                      | (1,563,689   | ) |                                 |     | 11,849,694  |                                   |  |     | 136,932,359  |   |  |                   | 1,593,160    |   |  |     | 148,811,524  |  
|Interest (expense) income, net                      |  |                                      | (9,729,782   | ) |                                 |     | (2,259,976  | )                                 |  |     | 1,118,566    |   |  |                   | (57,497      | ) |  |     | (10,928,689  | )
|Exchange (loss) gain, net                           |  |                                      | 2,829,007    |   |                                 |     | (422,441    | )                                 |  |     | 11,013,296   |   |  |                   |              |   |  |     | 13,419,862   |  
|Other financing cost, net                           |  |                                      | (4,731,976   | ) |                                 |     | (282,351    | )                                 |  |     | (5,047,536   | ) |  |                   |              |   |  |     | (10,061,863  | )
|Taxes on profits                                    |  |                                      | 653,814      |   |                                 |     | (2,293,953  | )                                 |  |     | (34,659,028  | ) |  |                   |              |   |  |     | (36,299,167  | )
|Equity interest in net income of associated company |  |                                      | 119,443,671  |   |                                 |     | 3,284,783   |                                   |  |     | 9,875,755    |   |  |                   | (130,644,831 | ) |  |     | 1,959,378    |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net income (loss) for year                          |  | Ps.                                  | 106,901,045  |   |                                 | Ps. | 9,875,756   |                                   |  |     | 119,233,412  |   |  |                   | (129,109,168 | ) |  |     | 106,901,045  |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                    |  |                                      |              |   |                                
|Distribution of the net income (loss) to:           |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Equity owners of holding company                    |  | Ps.                                  | 106,901,045  |   |                                 | Ps. | 9,875,756   |                                   |  | Ps. | 105,017,045  |   |  | Ps.               | (129,096,293 | ) |  | Ps. | 92,697,553   |  
|Non-controlling interest                            |  |                                      |              |   |                                 |     |             |                                   |  |     | 14,216,367   |   |  |                   | (12,875      | ) |  | Ps. | 14,203,492   |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net income (loss)                                   |  | Ps.                                  | 106,901,045  |   |                                 | Ps. | 9,875,756   |                                   |  | Ps. | 119,233,412  |   |  | Ps.               | (129,109,168 | ) |  | Ps. | 106,901,045  |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                    | 
|                                                    |  | For the year ended December 31, 2010 |             
|                                                    |  |                                      |              |   |                                
|Total revenues                                      |  | Ps.                                  | 3,745,818    |   |                                 | Ps. | 107,499,431 |                                   |  | Ps. | 597,055,338  |   |  | Ps.               | (100,444,909 | ) |  | Ps. | 607,855,678  |  
|Total cost and operating expenses                   |  | Ps.                                  | 1,336,270    |   |                                 |     | 106,223,410 |                                   |  |     | 448,408,826  |   |  |                   | (100,434,237 | ) |  |     | 455,534,269  |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Operating income (loss)                             |  |                                      | 2,409,548    |   |                                 |     | 1,276,021   |                                   |  |     | 148,646,512  |   |  |                   | ( 10,672     | ) |  |     | 152,321,409  |  
|Interest income (expense), net                      |  |                                      | ( 11,138,004 | ) |                                 |     | (3,164,235  | )                                 |  |     | 1,825,243    |   |  |                   | ( 2,200      | ) |  |     | ( 12,479,196 | )
|Exchange gain, net                                  |  |                                      | 4,822,580    |   |                                 |     | 542,954     |                                   |  |     | 216,040      |   |  |                   |              |   |  |     | 5,581,574    |  
|Other financing cost, net                           |  |                                      | ( 1,815,045  | ) |                                 |     | ( 2,895,023 | )                                 |  |     | ( 7,265,887  | ) |  |                   |              |   |  |     | ( 11,975,955 | )
|Taxes on profits                                    |  |                                      | 137,446      |   |                                 |     | 1,326,144   |                                   |  |     | (37,677,209  | ) |  |                   |              |   |  |     | ( 36,213,619 | )
|Equity interest in net income of associated company |  |                                      | 104,488,898  |   |                                 |     | 3,412,786   |                                   |  |     | 498,647      |   |  |                   | (106,729,121 | ) |  |     | 1,671,210    |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net income (loss)                                   |  | Ps.                                  | 98,905,423   |   |                                 | Ps. | 498,647     |                                   |  |     | 106,243,346  |   |  |                   | (106,741,993 | ) |  |     | 98,905,423   |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                    |  |                                      |              |   |                                
|Distribution of the net income (loss) to:           |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Equity owners of holding company                    |  | Ps.                                  | 98,905,423   |   |                                 | Ps. | 498,647     |                                   |  | Ps. | 97,951,398   |   |  | Ps.               | (106,232,416 | ) |  | Ps. | 91,123,052   |  
|Non-controlling interest                            |  |                                      |              |   |                                 |     |             |                                   |  |     | 8,291,948    |   |  |                   | ( 509,577    | ) |  |     | 7,782,371    |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net income (loss)                                   |  | Ps.                                  | 98,905,423   |   |                                 | Ps. | 498,647     |                                   |  | Ps. | 106,243,346  |   |  | Ps.               | (106,741,993 | ) |  | Ps. | 98,905,423   |  
|                                                    |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  



F-101



---

##### Table of Contents

Condensed Consolidating Statements of Cash Flows:



|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|--------------------------------------------------------- |  | ------------------------------------ | ------------ | - | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ------------ | - |  | --- | ------------ | -
|                                                          |  | Parent                               |              |   | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |             
|                                                          |  | For the year ended December 31, 2009 |              |   |                                 |     |             |                                   | 
|Operating activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                          |  |                                      |              |   |                                
|Income before taxes                                       |  | Ps.                                  | 106,247,230  |   |                                 | Ps. | 12,169,709  |                                   |  | Ps. | 153,892,439  |   |  | Ps.               | (129,109,166 | ) |  | Ps. | 143,200,212  |  
|Non-cash items                                            |  |                                      | (118,526,932 | ) |                                 |     | 5,988,686   |                                   |  |     | 73,127,593   |   |  |                   | 130,644,830  |   |  |     | 91,234,177   |  
|Changes in working capital:                               |  |                                      | 60,814,480   |   |                                 |     | (13,883,127 | )                                 |  |     | (63,188,718  | ) |  |                   | (1,705,009   | ) |  |     | (17,962,374  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows (used in) provided by operating activities |  |                                      | 48,534,778   |   |                                 |     | 4,275,268   |                                   |  |     | 163,831,314  |   |  |                   | (169,345     | ) |  |     | 216,472,015  |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Investing activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Acquisition of plant, property and equipment              |  |                                      |              |   |                                 |     | (3,662,657  | )                                 |  |     | (73,784,361  | ) |  |                   |              |   |  |     | (77,447,018  | )
|Acquisition of licenses                                   |  |                                      |              |   |                                 |     | 27,119      |                                   |  |     | (2,411,120   | ) |  |                   |              |   |  |     | (2,384,001   | )
|Dividends received                                        |  |                                      | 31,362,000   |   |                                 |     | 5,500,000   |                                   |  |     | 3,180,000    |   |  |                   | (40,042,000  | ) |  |     |              |  
|Acquisition of non-controlling interest                   |  |                                      |              |   |                                 |     |             |                                   |  |     | (339,701     | ) |  |                   |              |   |  |     | (339,701     | )
|Fixed assets sales                                        |  |                                      |              |   |                                 |     |             |                                   |  |     | 556,704      |   |  |                   |              |   |  |     | 556,704      |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows provided (used in) by investing activities |  |                                      | 31,362,000   |   |                                 |     | 1,864,462   |                                   |  |     | (72,798,478  | ) |  |                   | (40,042,000  | ) |  |     | (79,614,016  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Financing activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Bank loans, net                                           |  |                                      | (30,479,328  | ) |                                 |     |             |                                   |  |     | (2,449,284   | ) |  |                   |              |   |  |     | (32,928,612  | )
|Acquisition of permanent investments                      |  |                                      |              |   |                                 |     | (169,345    | )                                 |  |     | (1,151,853   | ) |  |                   | 169,345      |   |  |     | (1,151,853   | )
|Interest Paid                                             |  |                                      |              |   |                                 |     | (2,453,158  | )                                 |  |     | (13,474,462  | ) |  |                   |              |   |  |     | (15,927,620  | )
|Repurchase and others                                     |  |                                      | (24,657,808  | ) |                                 |     |             |                                   |  |     | (6,824,849   | ) |  |                   |              |   |  |     | (31,482,657  | )
|Payment of dividends                                      |  |                                      | (25,462,328  | ) |                                 |     | (3,180,000  | )                                 |  |     | (44,480,698  | ) |  |                   | 40,042,000   |   |  |     | (33,081,026  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows (used in) provided by financing activities |  |                                      | (80,599,464  | ) |                                 |     | (5,802,503  | )                                 |  |     | (68,381,146  | ) |  | Ps.               | 40,211,345   |   |  |     | (114,571,768 | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                          |  |                                      |              |   |                                
|Net (decrease) increase in cash and cash equivalents      |  |                                      | (702,686     | ) |                                 |     | 337,227     |                                   |  |     | 22,651,690   |   |  |                   |              |   |  |     | 22,286,231   |  
|Adjustment to cash flow for exchange rate differences     |  |                                      |              |   |                                 |     |             |                                   |  |     | 1,194,606    |   |  |                   |              |   |  |     | 1,194,606    |  
|Cash and cash equivalents at Beginning of the Period      |  |                                      | 2,818,137    |   |                                 |     | 68,061      |                                   |  |     | 33,399,498   |   |  |                   |              |   |  |     | 36,285,696   |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Cash and cash equivalents at end of the period the period |  | Ps.                                  | 2,115,451    |   |                                 | Ps. | 405,288     |                                   |  | Ps. | 57,245,794   |   |  |                   |              |   |  | Ps. | 59,766,533   |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  



F-102



---

##### Table of Contents

Condensed Consolidating Statements of Cash Flows:



|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|--------------------------------------------------------- |  | ------------------------------------ | ------------ | - | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ------------ | - |  | --- | ------------ | -
|                                                          |  | Parent                               |              |   | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |             
|                                                          |  | For the year ended December 31, 2010 |              |   |                                 |     |             |                                   | 
|Operating activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                          |  |                                      |              |   |                                
|Income before taxes                                       |  | Ps.                                  | 98,767,975   |   |                                 | Ps. | (827,498    | )                                 |  | Ps. | 143,920,558  |   |  | Ps.               | (106,741,993 | ) |  | Ps. | 135,119,042  |  
|Non-cash items                                            |  |                                      | (109,311,476 | ) |                                 |     | 9,438,536   |                                   |  |     | 104,928,291  |   |  |                   | 106,729,121  |   |  |     | 111,784,472  |  
|Changes in working capital:                               |  |                                      | (71,545,454  | ) |                                 |     | 39,496,263  |                                   |  |     | (13,282,371  | ) |  |                   | 12,872       |   |  |     | (45,318,690  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows provided by (used in) operating activities |  |                                      | (82,088,955  | ) |                                 |     | 48,107,301  |                                   |  |     | 235,566,478  |   |  |                   |              |   |  |     | 201,584,824  |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Investing activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Acquisition of plant, property and equipment              |  |                                      | (9,800,000   | ) |                                 |     | (1,491,207  | )                                 |  |     | (66,575,202  | ) |  |                   |              |   |  |     | (77,866,409  | )
|Acquisition of licenses                                   |  |                                      |              |   |                                 |     | (3,868,708  | )                                 |  |     | (206,521     | ) |  |                   |              |   |  |     | (4,075,229   | )
|Dividends received                                        |  |                                      | 61,525,499   |   |                                 |     | 3,300,000   |                                   |  |     | 8,871,250    |   |  |                   | (73,696,749  | ) |  |     |              |  
|Acquisition of non-controlling interest                   |  |                                      |              |   |                                 |     |             |                                   |  |     | (31,463,621  | ) |  |                   |              |   |  |     | (31,463,621  | )
|Fixed assets sales                                        |  |                                      |              |   |                                 |     |             |                                   |  |     | 884,241      |   |  |                   |              |   |  |     | 884,241      |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows provided by (used in) Investing activities |  |                                      | 51,725,499   |   |                                 |     | (2,059,915  | )                                 |  |     | (88,489,853  | ) |  |                   | (73,696,749  | ) |  |     | (112,521,018 | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Financing activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Bank loans, net                                           |  |                                      | 114,968,571  |   |                                 |     |             |                                   |  |     | (83,015,282  | ) |  |                   |              |   |  |     | 31,953,289   |  
|Acquisition of permanent investments                      |  |                                      | (3,245,656   | ) |                                 |     | (31,421,735 | )                                 |  |     |              |   |  |                   |              |   |  |     | (34,667,391  | )
|Interest Paid                                             |  |                                      |              |   |                                 |     | (852,096    | )                                 |  |     | (13,867,203  | ) |  |                   |              |   |  |     | (14,719,299  | )
|Repurchase and others                                     |  |                                      | (18,150,990  | ) |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     | (18,150,990  | )
|Payment of dividends                                      |  |                                      | (12,765,150  | ) |                                 |     | (13,299,999 | )                                 |  |     | (64,825,502  | ) |  |                   | 73,696,749   |   |  |     | (17,193,902  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows provided by (used in) financing activities |  |                                      | 80,806,775   |   |                                 |     | (45,573,830 | )                                 |  |     | (161,707,987 | ) |  |                   | 73,696,749   |   |  |     | (52,778,293  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                          |  |                                      |              |   |                                
|Net (decrease) increase in cash and cash equivalents      |  |                                      | 50,443,319   |   |                                 |     | 473,556     |                                   |  |     | (14,631,362  | ) |  |                   |              |   |  |     | 36,285,513   |  
|Adjustment to cash flow for exchange rate differences     |  |                                      |              |   |                                 |     |             |                                   |  |     | (113,581     | ) |  |                   |              |   |  |     | (113,581     | )
|Cash and cash equivalents at beginning of the period      |  |                                      | 2,115,451    |   |                                 |     | 405,288     |                                   |  |     | 57,245,794   |   |  |                   |              |   |  |     | 59,766,533   |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Cash and cash equivalents at end of the period            |  | Ps.                                  | 52,558,770   |   |                                 | Ps. | 878,844     |                                   |  | Ps. | 42,500,851   |   |  |                   |              |   |  | Ps. | 95,938,465   |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  



F-103