##### Table of Contents

As filed with the Securities and Exchange Commission on April 30, 2013







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, 2012

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, Delegación Miguel Hidalgo, 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, Delegación Miguel Hidalgo, 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 A Shares, without par value |  | NASDAQ National Market                             
|A Shares, without par value                                                  |  | NASDAQ National Market (for listing purposes only) 
|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)
|2.375% Senior Notes Due 2016                                                 |  | New York Stock Exchange                            
|3.125% Senior Notes Due 2022                                                 |  | New York Stock Exchange                            
|4.375% Senior Notes Due 2042                                                 |  | New York Stock Exchange                            

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, 2012:



|               |  |          
|-------------- |  | ---------
|23,424 million |  | AA Shares
|712 million    |  | A Shares 
|51,703 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).x  Yes     ̈  No

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 ̈

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                                 |  |  | 61  | 
|           |  |                                                                             
|Item 6.    |  | Directors, Senior Management and Employees                                   |  |  | 86  | 
|           |  | Management                                                                   |  |  | 86  | 
|           |  | Employees                                                                    |  |  | 95  | 
|           |  |                                                                             
|Item 7.    |  | Major Shareholders and Related Party Transactions                            |  |  | 96  | 
|           |  | Major Shareholders                                                           |  |  | 96  | 
|           |  | Related Party Transactions                                                   |  |  | 98  | 
|           |  |                                                                             
|Item 8.    |  | Financial Information                                                        |  |  | 99  | 
|           |  | Dividends                                                                    |  |  | 99  | 
|           |  | Legal Proceedings                                                            |  |  | 100 | 
|           |  |                                                                             
|Item 9.    |  | The Offer and Listing                                                        |  |  | 101 | 
|           |  | Trading Markets                                                              |  |  | 101 | 
|           |  |                                                                             
|Item 10.   |  | Additional Information                                                       |  |  | 103 | 
|           |  | Bylaws                                                                       |  |  | 103 | 
|           |  | Certain Contracts                                                            |  |  | 109 | 
|           |  | Exchange Controls                                                            |  |  | 109 | 
|           |  | Taxation                                                                     |  |  | 109 | 
|           |  | Documents on Display                                                         |  |  | 114 | 
|           |  |                                                                             
|Item 11.   |  | Quantitative and Qualitative Disclosures about Market Risk                   |  |  | 114 | 
|           |  |                                                                             
|Item 12.   |  | Description of Securities Other than Equity Securities                       |  |  | 114 | 
|           |  |                                                                             
|Item 13.   |  | Defaults, Dividend Arrearages and Delinquencies                              |  |  | 114 | 
|           |  |                                                                             
|Item 14.   |  | Material Modifications to the Rights of Security Holders and Use of Proceeds |  |  | 115 | 
|           |  |                                                                             
|Item 15.   |  | Controls and Procedures                                                      |  |  | 115 | 
|           |  |                                                                             
|Item 16A.  |  | Audit Committee Financial Expert                                             |  |  | 117 | 
|           |  |                                                                             
|Item 16B.  |  | Code of Ethics                                                               |  |  | 117 | 
|           |  |                                                                             
|Item 16C.  |  | Principal Accountant Fees and Services                                       |  |  | 117 | 
|           |  |                                                                             
|Item 16D.  |  | Not Applicable                                                               |  |  | 118 | 
|           |  |                                                                             
|Item 16E.  |  | Purchases of Equity Securities by the Issuer and Affiliated Purchasers       |  |  | 118 | 
|           |  |                                                                             
|Item 16F.  |  | Not Applicable                                                               |  |  | 119 | 
|           |  |                                                                             
|Item 16G.  |  | Corporate Governance                                                         |  |  | 119 | 
|           |  |                                                                             
|Item 16H.  |  | Not Applicable                                                               |  |  | 123 | 
|           |  |                                                                             
|Item 17.   |  | Not Applicable                                                               |  |  | 123 | 
|           |  |                                                                             
|Item 18.   |  | Financial Statements                                                         |  |  | 123 | 
|           |  |                                                                             
|Item 19.   |  | Exhibits                                                                     |  |  | 124 | 



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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).

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 that the 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
pesos at the exchange rate of Ps.13.0101 to U.S.$1.00, which was the rate reported by Banco de México for December 31, 2012, as published in the Official Gazette of the Federation (Diario Oficial de la Federación, or
Official Gazette).

In June 2011, we effected a two for one stock split. Unless otherwise noted, all share and per
share data in this annual report have been adjusted to reflect the stock split for all periods presented. The selected financial information should be read in conjunction with, and is qualified in its entirety by reference to, our audited
consolidated financial statements. 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.



|                                                          |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|--------------------------------------------------------- |  | ------------------------------------------------------- | ---------- |  | ------------------------------------------------------------ |  | ---------- | ---- |  |  | ---------- |  |  | ---- | ---------- |  |  | ----- | ------ | 
|                                                          |  | For the year ended December 31,                         |           
|                                                          |  | 2009                                                    |            |  | 2010                                                         |  |            | 2011 |  |  | 2012       |  |  | 2012 |           
|                                                          |  | (millions of pesos, except share and per share amounts) |            |  | (millions of U.S. dollars,except share and pershare amounts) | 
|Income Statement Data:                                    |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|Operating revenues                                        |  |                                                         | Ps.581,560 |  |                                                              |  | Ps.629,889 |      |  |  | Ps.689,966 |  |  |      | Ps.775,070 |  |  | U.S.$ | 59,574 | 
|Operating costs and expenses                              |  |                                                         | 432,749    |  |                                                              |  | 477,568    |      |  |  | 535,191    |  |  |      | 617,759    |  |  |       | 47,483 | 
|Depreciation and amortization                             |  |                                                         | 79,904     |  |                                                              |  | 91,071     |      |  |  | 93,997     |  |  |      | 103,585    |  |  |       | 7,962  | 
|Operating income                                          |  |                                                         | 148,811    |  |                                                              |  | 152,321    |      |  |  | 154,776    |  |  |      | 157,310    |  |  |       | 12,091 | 
|Net profit                                                |  |                                                         | Ps.106,901 |  |                                                              |  | Ps. 98,905 |      |  |  | Ps. 88,124 |  |  |      | Ps. 92,140 |  |  | U.S.$ | 7,082  | 
|                                                          |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|Net profit attributable to:                               |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|Equity holders of the parent                              |  |                                                         | Ps. 92,968 |  |                                                              |  | Ps. 91,123 |      |  |  | Ps. 82,854 |  |  |      | Ps. 91,441 |  |  | U.S.$ | 7,028  | 
|Non-controlling interests                                 |  |                                                         | 14,203     |  |                                                              |  | 7,782      |      |  |  | 5,270      |  |  |      | 699        |  |  |       | 54     | 
|                                                          |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|Net profit                                                |  |                                                         | Ps.106,901 |  |                                                              |  | Ps. 98,905 |      |  |  | Ps. 88,124 |  |  |      | Ps. 92,140 |  |  | U.S.$ | 7,082  | 
|                                                          |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|Earnings per share:                                       |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|Basic                                                     |  |                                                         | Ps. 1.19   |  |                                                              |  | Ps. 1.15   |      |  |  | Ps. 1.05   |  |  |      | Ps. 1.20   |  |  | U.S.$ | 0.09   | 
|Diluted                                                   |  |                                                         | Ps. 1.19   |  |                                                              |  | Ps. 1.15   |      |  |  | Ps. 1.05   |  |  |      | Ps. 1.20   |  |  | U.S.$ | 0.09   | 
|Dividends declared per share(1)                           |  |                                                         | Ps. 0.40   |  |                                                              |  | Ps. 0.16   |      |  |  | Ps. 0.18   |  |  |      | Ps. 0.20   |  |  | U.S.$ | 0.015  | 
|Dividends paid per share(2)                               |  |                                                         | Ps. 0.40   |  |                                                              |  | Ps. 0.16   |      |  |  | Ps. 0.18   |  |  |      | Ps. 0.20   |  |  | U.S.$ | 0.015  | 
|Weighted average number of shares outstanding (millions): |  |                                                         |            |  |                                                              |  |            |      |  |  |            |  |  |      |            |  |  |       |        | 
|Basic                                                     |  |                                                         | 77,930     |  |                                                              |  | 79,020     |      |  |  | 78,599     |  |  |      | 76,111     |  |  |       |        | 
|Diluted                                                   |  |                                                         | 77,930     |  |                                                              |  | 79,020     |      |  |  | 78,599     |  |  |      | 76,111     |  |  |       |        | 



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|                                                      |  |                                                         |         |  |                                                              |  |            |      |  |  |            |  |  |      |           |  |  |       |        | 
|----------------------------------------------------- |  | ------------------------------------------------------- | ------- |  | ------------------------------------------------------------ |  | ---------- | ---- |  |  | ---------- |  |  | ---- | --------- |  |  | ----- | ------ | 
|                                                      |  | As of December 31,                                      |        
|                                                      |  | 2009                                                    |         |  | 2010                                                         |  |            | 2011 |  |  | 2012       |  |  | 2012 |          
|                                                      |  | (millions of pesos, except share and per share amounts) |         |  | (millions of U.S. dollars,except share and pershare amounts) | 
|Balance Sheet Data:                                   |  |                                                         |         |  |                                                              |  |            |      |  |  |            |  |  |      |           |  |  |       |        | 
|Property, plant and equipment, net                    |  | Ps.                                                     | 418,733 |  |                                                              |  | Ps.411,820 |      |  |  | Ps.466,086 |  |  | Ps.  | 500,434   |  |  | U.S.$ | 38,465 | 
|Total assets                                          |  |                                                         | 807,334 |  |                                                              |  | 876,695    |      |  |  | 947,633    |  |  |      | 1,003,898 |  |  |       | 77,163 | 
|Short-term debt and current portion of long-term debt |  |                                                         | 44,967  |  |                                                              |  | 9,039      |      |  |  | 26,643     |  |  |      | 13,622    |  |  |       | 1,047  | 
|Long-term debt                                        |  |                                                         | 232,274 |  |                                                              |  | 294,060    |      |  |  | 353,975    |  |  |      | 404,048   |  |  |       | 31,057 | 
|Total equity                                          |  |                                                         | 313,798 |  |                                                              |  | 336,037    |      |  |  | 295,640    |  |  |      | 312,323   |  |  |       | 24,006 | 
|Capital stock                                         |  |                                                         | 30,116  |  |                                                              |  | 96,433     |      |  |  | 96,420     |  |  |      | 96,415    |  |  |       | 7,411  | 
|Number of outstanding shares (millions):              |  |                                                         |         |  |                                                              |  |            |      |  |  |            |  |  |      |           |  |  |       |        | 
|AA Shares                                             |  |                                                         | 23,424  |  |                                                              |  | 23,424     |      |  |  | 23,424     |  |  |      | 23,424    |  |  |       |        | 
|A Shares                                              |  |                                                         | 902     |  |                                                              |  | 786        |      |  |  | 756        |  |  |      | 712       |  |  |       |        | 
|L Shares                                              |  |                                                         | 52,866  |  |                                                              |  | 56,136     |      |  |  | 52,810     |  |  |      | 51,703    |  |  |       |        | 
|Ratio of Earnings to Fixed Charges(3)                 |  |                                                         | 9.2     |  |                                                              |  | 7.6        |      |  |  | 6.4        |  |  |      | 6.0       |  |  |       |        | 



|(1) | Figures provided represent the annual dividend declared at the general shareholders meeting. Figures for 2009 include a special dividend of Ps. 0.25 per
share.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | 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.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(3) | 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

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 Board of Governors of the Federal Reserve System, expressed in pesos per U.S. dollar.



|                         |  |      |         |  |     |  |         |            |  |  |            |  |  |  |         | 
|------------------------ |  | ---- | ------- |  | --- |  | ------- | ---------- |  |  | ---------- |  |  |  | ------- | 
|Period                   |  | High |         |  | Low |  |         | Average(1) |  |  | Period End | 
|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 | 
|2011                     |  |      | 14.2542 |  |     |  | 11.5050 |            |  |  | 12.4270    |  |  |  | 13.9510 | 
|2012                     |  |      | 14.3650 |  |     |  | 12.6250 |            |  |  | 13.1404    |  |  |  | 12.9635 | 
|October                  |  |      | 13.0925 |  |     |  | 12.7054 |            |  |  |            |  |  |  | 13.0877 | 
|November                 |  |      | 13.2531 |  |     |  | 12.9171 |            |  |  |            |  |  |  | 12.9171 | 
|December                 |  |      | 13.0125 |  |     |  | 12.7202 |            |  |  |            |  |  |  | 12.9635 | 
|2013                     |  |      |         |  |     |  |         |            |  |  |            |  |  |  |         | 
|January                  |  |      | 12.7891 |  |     |  | 12.5857 |            |  |  |            |  |  |  | 12.7344 | 
|February                 |  |      | 12.8798 |  |     |  | 12.6260 |            |  |  |            |  |  |  | 12.7788 | 
|March                    |  |      | 12.7956 |  |     |  | 12.3155 |            |  |  |            |  |  |  | 12.3155 | 
|April (through April 19) |  |      | 12.3404 |  |     |  | 12.0680 |            |  |  |            |  |  |  | 12.2320 | 



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

On
April 19, 2013, the noon buying rate published by the Board of Governors of the Federal Reserve System was Ps.12.232 to U.S.$1.00.



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FORWARD-LOOKING STATEMENTS

Some of the information contained in this annual report may constitute forward-looking statements within the meaning of the
safe harbor provisions of The Private Securities Litigation Reform Act of 1995. Although we have based these forward-looking statements on our expectations and projections about future events, it is possible that actual events may differ materially
from our expectations. In many cases, we include together with the forward-looking statements themselves a discussion of factors that may cause actual events to differ from our forward-looking statements. Examples of forward-looking statements
include the following:



| |  |  | projections of our commercial, operating or financial performance, our financing, our capital structure or our other financial items or ratios;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------



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



| |  |  | statements concerning regulation or regulatory developments;
| | - |  | ------------------------------------------------------------



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



| |  |  | competitive developments in the telecommunications sector in each of the markets where we 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, Colombia 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 Operations

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

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.

We expect that competition will
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 consolidation in the telecommunications industry, 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 in other markets, is our largest regional competitor.

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);
| | - |  | -----------------------------------------------------------------



| |  |  | offer services at lower costs through double, triple and quadruple play packages or other pricing strategies;
| | - |  | -------------------------------------------------------------------------------------------------------------



| |  |  | 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 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 land coverage, the quality of our
network and service, our rates, customer service, effective marketing, our success in selling double, triple and quadruple play packages 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.

The effects of forthcoming Mexican telecommunications legislation are uncertain but likely to be material

In December 2012, the new Mexican administration, led by President Enrique Peña Nieto, and the principal political parties agreed
to an action plan called Pacto por México to promote a comprehensive package of reforms in the Mexican economy and society. One of the plans main goals is to promote investment in telecommunications and broadcasting
in Mexico, and a new bill for this purpose was adopted in March 2013 by the Chamber of Deputies and in April 2013 by the Senate.

We expect that the effects of this legislation on our business and operations in Mexico will be material. Among the features of the bill that could affect us are the following:



| |  |  | establishment of the Federal Telecommunications Institute, an independent regulatory body with broad powers;
| | - |  | ------------------------------------------------------------------------------------------------------------



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##### Table of Contents

| |  |  | establishment of specialized courts for telecommunications and broadcasting matters, and limitations on judicial power to suspend regulatory measures
pending judicial review;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | identification of preponderant economic actors in telecommunications, based on market share, and imposition of specific measures 
including asymmetric rates and regulations and structural separation  to protect competition and consumers;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | unbundling of network elements and the local loop;
| | - |  | --------------------------------------------------



| |  |  | creating a single concession regime allowing each concessionaire to offer multiple services on a converged basis;
| | - |  | -----------------------------------------------------------------------------------------------------------------



| |  |  | enhanced regulatory powers and sanctions; and
| | - |  | ---------------------------------------------



| |  |  | creation of a government-sponsored carrier of carriers to transport data for networks.
| | - |  | --------------------------------------------------------------------------------------

See Recent Developments under Item 4.

The telecommunications and broadcasting bill is likely to become effective in substantially its current form, but its impact will depend on how it is implemented by further legislation and by the new
Federal Telecommunications Institute. It would therefore be premature to predict the long-term effects of the bill and the new framework it contemplates, but these effects could be adverse to our interests in significant respects.

Governmental or regulatory actions could hurt our operations

Our operations 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 by reducing our profit margins.

See Regulation under Item 4, Legal
Proceedings under Item 8 and Note 17 to our audited consolidated financial statements included in this annual report.

In addition, changes in political administrations could lead to the adoption of policies concerning competition and taxation of communications services. In Colombia, for example, a bill that is still in
committee proposes restricting any one wireless provider from controlling more than 30% of the wireless market. We cannot anticipate whether this legislative initiative will be approved. Furthermore, in the countries in which we operate outside of
Mexico, we could face policies such as preferences for local over foreign ownership of communications licenses and assets or for government over private ownership, which could make it more cumbersome or impossible for us to continue to develop our
businesses. Restrictions such as those described above 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.

Our failure to meet or maintain quality of service goals and standards could result in fines

The terms of the concessions under which our subsidiaries operate require them to meet certain service quality goals, including, for
example, minimum call completion rates, maximum busy circuits rates, operator availability and responsiveness to repair requests. Failure to meet service quality obligations in the past has resulted in the imposition of fines by regulatory entities.
Our ability to comply with these obligations in the future may be affected by factors beyond our control and, accordingly, we cannot assure that we will be able to comply with them.

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



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specific market. We cannot predict what steps regulatory authorities might take in response to determinations regarding substantial market power in the countries in which we operate. However,
adverse determinations against our subsidiaries could result in material fines, penalties or restrictions on our operations. We may also face additional regulatory restrictions and scrutiny as a result of our provision of combined services.

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 have to acquire additional radio spectrum capacity in order
to expand our customer base and maintain the quality of our wireless services

Licensed radio spectrum is essential to
our growth and the quality of our wireless services, not only for our global system for mobile communications (GSM), universal mobile telecommunications systems (UMTS) and long term evolution (LTE) networks, but
also for the deployment of new generation networks to offer improved data and value-added services. We obtain most of our radio spectrum through auctions conducted by governments of the countries in which we operate. Participation in spectrum
auctions in most of these countries requires prior government authorization, and we may be subject to caps on our ability to acquire additional spectrum. 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 demands of our customers.

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 would not properly 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 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 financing 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 financing could have a material effect on our
business, results



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of operations and financial condition, but we cannot provide assurance 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 that, if determined adversely to our interests, may have a material adverse
effect on our business, results of operations, financial condition or prospects. Our significant litigation is described in Regulation under Item 4, Legal Proceedings under Item 8 and in Note 17 to our audited
consolidated financial statements included in this annual report.

We are contesting significant tax assessments

We and some of our subsidiaries have been notified of tax assessments for significant amounts by the tax authorities
of the countries in which we operate, especially in Mexico and Brazil. The tax assessments relate to, among other things, alleged improperly taken deductions and underpayments. We are contesting these tax assessments in several administrative and
legal proceedings, and our challenges are at various stages. If determined adversely to us, these proceedings may have a material adverse effect on our business, results of operations, financial condition or prospects. In addition, in some
jurisdictions challenges to tax assessments require the posting of a bond or security for the contested amount, which may reduce our flexibility in operating our business. Our significant tax assessments are described 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 have an adverse effect on our operations

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



| |  |  | physical damage to access lines and fixed networks;
| | - |  | ---------------------------------------------------



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



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



| |  |  | malicious actions, such as theft or misuse of customer data;
| | - |  | ------------------------------------------------------------



| |  |  | limitations on the use of our radio bases;
| | - |  | ------------------------------------------



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



| |  |  | human error; and
| | - |  | ----------------



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

In Brazil, for example, our satellite operations may be affected if we experience a delay in the launching of a new satellite to replace one of the satellites currently in use that is reaching the end of
its operational life. Such delay may occur because of, among other reasons, construction delays, unavailability of launch vehicles and/or launch failures.

We have instituted measures to reduce these risks. However, there is no assurance that any measures we implement will be effective in preventing system failures under all circumstances. System failures
may cause interruptions in services or reduced capacity for our customers, either of which may have an adverse effect on our operations due to, for example, increased expenses, potential legal liability, loss of existing and potential subscribers,
reduced user traffic, decreased revenues and reputational harm.



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Cyber attacks or other breaches of network or information technology security could
have an adverse effect on our business

Cyber attacks or other breaches of network or information technology security
may cause equipment failures or disruptions to our operations. Our inability to operate our fixed line or wireless networks as a result of such events, even for a limited period of time, may result in significant expenses or loss of market share to
other communications providers. In addition, the potential liabilities associated with these events could exceed the insurance coverage we maintain. Cyber attacks, which include the use of malware, computer viruses and other means for disruption or
unauthorized access on companies, have increased in frequency, scope and potential harm in recent years. While we have not yet been subject to cyber attacks or other cyber incidents, the preventive actions we take to reduce the risk of cyber
incidents and protect our information technology and networks may be insufficient to repel a major cyber attack in the future. The costs associated with a major cyber attack on us could include incentives offered to existing customers and business
partners to retain their business, increased expenditures on cyber security measures, lost revenues from business interruption, litigation and damage to our reputation. In addition, if we fail to prevent the theft of valuable information such as
financial data and sensitive information about us, or if we fail to protect the privacy of customer and employee confidential data against breaches of network or information technology security, it could result in damage to our reputation, which
could adversely impact customer and investor confidence. Any of these occurrences could result in a material adverse effect on our results of operations and financial condition.

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 them. Our weighted monthly average churn rate on a consolidated basis was 3.7% for the year ended December 31, 2011 and 3.6% for the year ended December 31, 2012. 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 rely on key suppliers and vendors to provide equipment that we need to operate our business

We rely upon various key suppliers and vendors, including Apple, Nokia, Blackberry (formerly known as Research in Motion), Sony (formerly
known as Sony-Ericsson), Motorola, LG, Samsung, Huawei, Alcatel-Lucent, Nokia Siemens Networks, Ericsson and ZTE 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 in 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 them.



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We may fail to realize the benefits anticipated from acquisitions and significant
investments we make from time to time

The business growth opportunities, revenue benefits, cost savings and other
benefits we anticipated to result from our acquisitions and significant investments may not be achieved as expected, or may be delayed. 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, or if we are required to recognize impairments of acquired assets, investments or goodwill, our results of operations and financial condition may suffer.

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, broadband access, Pay TV and fixed 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.
It also requires significant capital expenditure. 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. This is true across many of the services we provide, including wireless and cable technology.

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 producers and distributors, such as ring tones,
text games, video games, video, including TV programs and movies, wallpapers or screensavers, and we 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 content, products or software utilized by us or our suppliers, content producers and
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. 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 subsidiaries



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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 technology and, as a result, our future financial performance.

Developments in the telecommunications sector have resulted, and may 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, investments in associates, 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. See Impairment of Long-Lived Assets under Item 5.

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. The interests of the Slim Family may diverge from the interests of our other investors.

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. You may not acquire or transfer more than 10% of our capital stock 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 with respect to their ownership interests in América Móvil and shall be deemed to have agreed not to invoke the protection of their governments under 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 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.



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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 be legally 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;
| | - |  | -----------------------------



| |  |  | price controls;
| | - |  | ---------------



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



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



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



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

Adverse economic, political and social conditions in Latin America may inhibit demand for telecommunication services and create uncertainty regarding our operating environment or may affect our ability to
renew our licenses and concessions, to maintain or increase our market share or profitability and may have an adverse impact on future acquisition efforts, which could have a material adverse effect on our company.



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Our business may be especially affected by conditions in Mexico and Brazil, our two
principal markets. During 2012, Mexicos gross domestic product (GDP) increased by 3.9%, compared to an increase of 3.9% in 2011. According to data published by the Brazilian Central Bank (Banco Central do Brasil), during
2012, Brazils GDP increased by 0.9% in 2012, compared to an increase of 2.7% in 2011.

Changes in exchange rates
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 currencies in which our indebtedness is denominated. Such changes result in exchange losses or gains on our net indebtedness and accounts payable. In 2011, changes in currency exchange
rates led us to report net foreign exchange loss of Ps.22,395 million. In 2012, we reported net foreign exchange gains of Ps.7,395 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 the currencies in which we conduct operations could cause governments to impose exchange controls that would interfere with or limit our ability to transfer
funds between us and our subsidiaries.

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. In Argentina, the government has adopted various rules and
regulations since late 2011 that established new restrictive controls on capital flows into the country. These enhanced exchange controls have practically closed the foreign exchange market to retail transactions and it is widely reported that the
Argentine peso/U.S. dollar exchange rate in the unofficial market substantially differs from the official foreign exchange rate. The Argentine government could impose further exchange controls or restrictions on the movement of capital and take
other measures in the future in response to capital flight or a significant depreciation of the Argentine peso.

Developments in other countries may affect the market price of our securities and adversely affect our ability to raise additional
financing

The market value of securities of Mexican companies is, to varying degrees, affected by economic and market
conditions in other countries, including the United States, the European Union and emerging market countries. Although economic conditions in such countries may differ significantly from economic conditions in Mexico, investors reactions to
developments in any of these other countries may have an adverse effect on the market value of securities of Mexican issuers. Crises in the United States, the European Union and emerging market countries may diminish investor interest in securities
of Mexican issuers. This could materially and adversely affect the market price of our securities, and could also make it more difficult for us to access the capital markets and finance our operations in the future on acceptable terms or at all.



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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, Colombia and 11 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, Fixed line        
|                   |  | Embratel              |  | Fixed line, Pay TV          
|                   |  | Net                   |  | Fixed line, Pay TV          
|Chile              |  | Claro                 |  | Wireless, Fixed line, Pay TV
|Colombia           |  | Claro                 |  | Wireless, Fixed line, Pay TV
|Costa Rica         |  | Claro                 |  | Wireless, 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
|Nicaragua          |  | Claro                 |  | Wireless, Fixed line, Pay TV
|Panama             |  | Claro                 |  | Wireless, Pay TV            
|Paraguay           |  | Claro                 |  | Wireless, Pay TV            
|Peru               |  | Claro                 |  | Wireless, Fixed line, Pay TV
|Puerto Rico        |  | Claro                 |  | Wireless, Fixed line, Pay TV
|Uruguay            |  | Claro                 |  | Wireless, Fixed line        
|United States      |  | TracFoneSimple Mobile |  | WirelessWireless            

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.

The following table sets forth 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



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refers to Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua and Panama; and (d) Caribbean refers to the Dominican Republic and Puerto Rico.



|                           |  |                |         |  |      |  |         |      |  |  |         | 
|-------------------------- |  | -------------- | ------- |  | ---- |  | ------- | ---- |  |  | ------- | 
|                           |  | December 31,   |        
|                           |  | 2010           |         |  | 2011 |  |         | 2012 | 
|                           |  | (in thousands) |        
|Wireless subscribers:      |  |                |         |  |      |  |         |      |  |  |         | 
|Mexico                     |  |                | 64,138  |  |      |  | 65,678  |      |  |  | 70,366  | 
|Brazil                     |  |                | 51,638  |  |      |  | 60,379  |      |  |  | 65,239  | 
|Colombia                   |  |                | 29,264  |  |      |  | 28,819  |      |  |  | 30,371  | 
|Southern Cone              |  |                | 24,508  |  |      |  | 26,281  |      |  |  | 27,432  | 
|Andean Region              |  |                | 20,310  |  |      |  | 22,311  |      |  |  | 24,638  | 
|Central America            |  |                | 10,924  |  |      |  | 12,932  |      |  |  | 15,271  | 
|United States              |  |                | 17,749  |  |      |  | 19,762  |      |  |  | 22,392  | 
|Caribbean                  |  |                | 6,494   |  |      |  | 5,592   |      |  |  | 5,848   | 
|                           |  |                |         |  |      |  |         |      |  |  |         | 
|Total wireless subscribers |  |                | 225,025 |  |      |  | 241,755 |      |  |  | 261,557 | 
|                           |  |                |         |  |      |  |         |      |  |  |         | 
|RGUs:                      |  |                |         |  |      |  |         |      |  |  |         | 
|Mexico                     |  |                | 22,950  |  |      |  | 22,766  |      |  |  | 22,669  | 
|Brazil(1)                  |  |                | 18,606  |  |      |  | 23,589  |      |  |  | 28,586  | 
|Colombia                   |  |                | 2,988   |  |      |  | 3,548   |      |  |  | 4,195   | 
|Southern Cone              |  |                | 1,067   |  |      |  | 1,336   |      |  |  | 1,508   | 
|Andean Region              |  |                | 544     |  |      |  | 863     |      |  |  | 1,120   | 
|Central America            |  |                | 3,231   |  |      |  | 3,621   |      |  |  | 3,896   | 
|Caribbean                  |  |                | 2,144   |  |      |  | 2,159   |      |  |  | 2,165   | 
|                           |  |                |         |  |      |  |         |      |  |  |         | 
|Total RGUs                 |  |                | 51,530  |  |      |  | 57,883  |      |  |  | 64,139  | 
|                           |  |                |         |  |      |  |         |      |  |  |         | 



|(1) | Includes RGUs of Net Serviços for all years presented.
|--- | ------------------------------------------------------

Our principal operations are described below. Unless otherwise indicated, we operate in all of our geographic segments under the Claro brand.



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



| |  |  | Mexico Fixed.    Our subsidiary Teléfonos de México, S.A.B. de C.V. (Telmex), which operates under
its own brand, is the largest nationwide provider of fixed-line telephone services in Mexico.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Brazil.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 Empresa Brasileira de Telecomunicações, S.A. (Embratel), together with its subsidiaries, is one of the leading
providers of telecommunications services in Brazil, and our subsidiary Net Serviços de Comunicação, S.A. (Net Serviços) is the largest cable television operator in Brazil. Each of Embratel and Net
Serviços operates under its own brand. Together they offer triple-play services in Brazil, with a cable television network that passed 16.5 million homes as of December 31, 2012.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Colombia.    We provide wireless services in Colombia, where we are the largest wireless service provider. We also provide
fixed-line telecommunications and Pay TV services. As of December 31, 2012, our network passed 6.4 million homes.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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



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| |  |  | Andean Region.We provide wireless services in Peru and Ecuador. We also provide fixed-line telecommunications and Pay TV
services in Peru, where our network passed 969 thousand homes, and Ecuador, where our network passed 482 thousand homes, as of December 31, 2012.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Central America.    We provide fixed-line, wireless and Pay TV services in Guatemala, El Salvador, Honduras and Nicaragua.
We also provide wireless telecommunications and Pay TV services in Panama and Costa Rica.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | United States.    Our subsidiary TracFone Wireless Inc. (TracFone) is engaged in the sale and distribution of
no-contract wireless services and wireless phones throughout the United States, Puerto Rico and the U.S. Virgin Islands. It operates under the TracFone and Simple Mobile brands.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | 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, based on the number of subscribers.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Other
Investments

During 2012, we acquired directly and indirectly approximately 29.77% of Koninklijke KPN N.V.
(KPN) and 23.69% of Telekom Austria AG (Telekom Austria). KPN is listed on the Amsterdam Stock Exchange (Euronext Amsterdam) while Telekom Austria is listed on the Vienna Stock Exchange (Wiener Börse AG). In our
audited consolidated financial statements, we account for KPN and Telekom Austria using the equity method.

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 when Telmex, a fixed-line Mexican telecommunications operator privatized in 1990, spun off to us its mobile operations in Mexico and other countries. We have made
significant acquisitions throughout Latin America and the Caribbean, and we have also expanded our businesses organically. During 2010, we acquired control of Telmex and Telmex Internacional, S.A.B. de C.V. (currently, Telmex Internacional, S.A. de
C.V., or Telmex Internacional) in a series of public tender offers. 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

New Telecommunications Bill in Mexico

Mexican President Enrique Peña Nieto was elected in July 2012 and took office in December 2012. As part of his administrations program, in December 2012, the principal political parties
agreed to an action plan called Pacto por México, which includes a number of commitments that would significantly affect several sectors of the Mexican economy and society. Among the key elements of the Pacto are
measures aimed at enhancing and promoting investment in telecommunications and broadcasting in Mexico to increase penetration, promote universal coverage, reduce prices and provide the whole population with access to quality services and content.

The new framework for telecommunications and broadcasting is reflected in a bill that would amend the Mexican Constitution.
The bill was passed by the Mexican Chamber of Deputies in March 2013, and passed with amendments by the Mexican Senate in April 2013. The Senate version of the bill was resubmitted to the Chamber of Deputies, which made minor additional changes to
the bill and returned it to the Senate for final approval. When a final bill has been approved by both chambers, it will then require the approval of the legislatures of the majority of the states of Mexico. We expect that the bill will become
effective in substantially its current form, although there may be some further changes. Once it becomes effective, the bill will require extensive implementation, including further congressional legislation, the establishment of new institutions,
as described below, and the adoption of new regulatory measures.



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The telecommunications and broadcasting bill is complex, and its full implications are not yet known. Among
the principal features that could affect us are the following:



| |  |  | The bill will establish a new Federal Telecommunications Institute (Instituto Federal de Telecomunicaciones), which will be responsible for the
development of telecommunications and broadcasting as provided in the Constitution and in legislation. The Institute will also be exclusively responsible for implementing competition legislation with respect to telecommunications and broadcasting,
while the implementation of competition legislation in other areas will be the responsibility of a separate commission. The Federal Telecommunications Institute will be independent of the executive branch of the government. It will have seven
commissioners, whom the President must appoint from a list of candidates identified by a special nominating committee, and who must also be ratified by the Senate.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The bill also provides for the establishment of specialized courts for telecommunications, broadcasting and competition matters, and it limits the
ability of courts to suspend implementation of the Institutes actions pending judicial review.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The bill will require the Federal Telecommunications Institute to identify preponderant economic actors (agentes económicos
preponderantes) in broadcasting and telecommunications and to impose measures to prevent harm to competition and to consumers. For this purpose, the bill defines a preponderant actor as one with a national market share of more than
50% in broadcasting or telecommunications, measured by users, subscribers, audience, network traffic or capacity utilization. The measures to be imposed may involve information, service offerings, quality of services, asymmetrical regulation of
rates and networks, including disaggregation (or unbundling) of essential network elements, and accounting, functional or structural separation of agents determined to be preponderant. The bill also specifically requires the Institute to
adopt measures for effective disaggregation (or unbundling) of the local loop of a preponderant actor in telecommunications so other concessionaires have access to it, and it provides that the same measures will apply to an economic
actor with substantial power in a relevant market for services to final customers.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The bill provides for the establishment of a single concession regime covering telecommunications and broadcasting services, allowing each
concessionaire to offer broadcasting and telecommunications services on a converged basis. For an operator that has been determined to be preponderant, as described above, the ability to provide services on a converged basis will depend on complying
with measures imposed by the Institute.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The bill provides for enhanced remedies to protect competition, which will be administered, in telecommunications and broadcasting, by the Federal
Telecommunications Institute. The Institute will be authorized to impose limits on concentration of frequencies and concessions and on cross ownership of communications media, and to order the divestiture of assets, rights or shares to ensure
compliance with the limits. The bill will also give the Institute power to impose sanctions for non-compliance with concession terms and with measures imposed by the Institute to promote competition.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The bill will require the federal government, in coordination with the Federal Telecommunications Institute, to promote the establishment of a new
telecommunications network to provide services to telecommunications operators.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The bill also provides for
a number of other measures, including eliminating the limit on foreign investment in fixed network operators, raising the limit on foreign investment in broadcasters to 49%, providing for two new broadcasting licenses to be awarded by public
auction, and providing for must carry obligations for television service providers and must offer obligations for broadcasters.

We expect that the new institutional framework and enhanced regulatory powers will create an environment that may promote capital investment and technological innovation, increase market penetration and
foster growth dynamics in the industry. If so, our companies will benefit from a more certain business environment and consistent regulation.



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The bill provides specific deadlines for the steps required to establish the Federal
Telecommunications Institute and for the initial actions the Institute is required to take. If it is approved rapidly, we would expect specific rules and regulations to begin taking effect in 2014.

Although the telecommunications and broadcasting bill is likely to become effective in substantially its current form, its impact will
depend on how it is implemented by further legislation and by the new Federal Telecommunications Institute. It would therefore be premature to predict the long-term effects of the bill and the new framework it contemplates. Our principal Mexican
subsidiaries, Telmex and Telcel, will need to adapt to the changes and enhanced business opportunities in order to promote growth in Mexico in line with the policies of the current Mexican government.

Elimination of preliminary remedies in judicial challenges to regulation

Recent Mexican legislation has sought to limit the availability of temporary judicial suspension of government actions in legal challenges
brought by affected parties. New legislation adopted in April 2013 provides that injunctions or interim court orders, which a judge could previously use to suspend application of any administrative order pending a final determination on its legality
and constitutionality, are no longer permitted in matters related to public goods such as the spectrum used by some of our subsidiaries in Mexico. As a result, our ability to forestall the effects of future administrative orders while their legality
is determined will be limited in cases that relate to public goods. As discussed above, the telecommunications and broadcasting bill implementing the Pacto por Méxicowould further limit our ability to challenge resolutions of the new
Federal Telecommunications Institute by seeking injunctions or interim court orders.

Broadcasting Rights to the Olympic
Games

In March 2013, the International Olympic Committee (IOC), awarded us the right to broadcast the
XXII Olympic Winter Games in Sochi, Russia in 2014 and the Games of the XXXI Olympiad Summer Games in Rio de Janeiro Brazil in 2016 on all media platforms across Latin America and the Caribbean, except for Brazil.

AMX-1 Submarine Cable System

In March 2012, we began construction of América Móvil 1 (the AMX-1 System), a 17,500 km submarine cable system specifically designed for 100 Gigabit per second
(100G) transmission. The cable is planned to run from the United States to Central America and Brazil and should enable us to provide international connectivity to all our subsidiaries in those areas. The AMX-1 System is planned to connect
seven countries via eleven landing points. The higher transmission speeds we expect to achieve upon completion of the system should substantially improve our customers communications experiences, providing opportunities for creation and
innovation. Our total expected investment in the AMX-1 System is US$506 million. We plan to begin commercial operation of the network in late 2014.

Acquisition of CIEs media and advertising unit

On
January 21, 2012, we entered into an agreement with Corporación Interamericana de Entretenimiento, S.A.B. de C.V. (CIE), to acquire 100% of the shares of Corporación de Medios Integrales, S.A. de C.V.
(CMI). CMI holds the media and advertising business in the commercial segment at CIE. The completion of the transaction is subject to certain approvals and is expected to occur during April of 2013.

Disclosure Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act

Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 added new Section 13(r) to the Securities Exchange Act of
1934, requiring a public reporting issuer to disclose in its annual and quarterly reports whether it or any of its affiliates has knowingly engaged in specific activities or transactions relating to Iran during the period covered by the report.

Several of our subsidiaries have entered into roaming interconnection agreements with MTN Irancell. To date, our subsidiaries
have no revenues under the agreements. We intend to continue this relationship.



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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. and publishing services through Editorial Contenido, S.A. de C.V.

As of December 31, 2012, we had approximately 70.4 million cellular subscribers, approximately 87.8% of which were
prepaid customers, which represented a market share of 69.6%.

In 2012, our Mexico Wireless segment had revenues of Ps.183,216
million representing 23.6% of our consolidated revenues for such period. As of December 31, 2012, our Mexico Wireless operations represented approximately 26.9% of our total wireless subscribers, as compared to 27.2% at December 31, 2011.

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, |            
|                                 |  | 2010         |             |   | 2011 |  |             | 2012 | 
|ARPU (year ended)                |  |              | Ps.     176 |   |      |  | Ps.     166 |      |  |  | Ps.     176 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |      |  |  |             |  
|Prepaid                          |  |              | 57,778      |   |      |  | 58,218      |      |  |  | 61,756      |  
|Postpaid                         |  |              | 6,359       |   |      |  | 7,460       |      |  |  | 8,610       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 64,138      |   |      |  | 65,678      |      |  |  | 70,366      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Market share                     |  |              | 70.5        | % |      |  | 68.2        | %    |  |  | 69.6        | %
|MOUs (year ended)                |  |              | 210         |   |      |  | 223         |      |  |  | 265         |  
|Wireless churn rate (year ended) |  |              | 3.2         | % |      |  | 3.7         | %    |  |  | 3.7         | %

Services and Products

Voice Services and Products

Telcel offers wireless voice and data
services under a variety of service 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 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



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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 subscribers to customers of other service providers. There has been extensive controversy, and legal and administrative proceedings, concerning the terms of these interconnection agreements 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.

Value Added Services

Telcel offers Value Added services, including Short Message Services (SMS), Multimedia Messaging Service (MMS), premium SMS and premium MMS, mobile entertainment services.

Data Services

Telcel offers data services including data-transmission, e-mail services and internet services such as web browsing, instant messaging, content streaming and interactive applications. Telcel also offers
data services through roaming service agreements.

Handsets and Accessories

Telcel offers a variety of products as complements to its wireless services, including handsets, smartphones, broadband cards and tablets
and accessories such as chargers, headsets, belt clips and batteries.

Other Services and Products

In addition, Telcel offers other wireless services, such as two wave services, PC and wireless security services, machine-to-machine
services, Oficina Móvil Telcel a services suite designed to provide companies with productivity-enhancing applications, video calls and mobile banking. Our internet content portal, Ideas, offers or is developing a wide range of
services and content such as video, music, radio, online gaming and applications.

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 2012, our marketing efforts were mainly focused
on highlighting that we have one of the best 3G networks in the world, showing the advantages such network has through value-added services and promoting our November 2012 launch of the 4G LTE network in the main cities of Mexico.

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, and receive commissions through approximately 42,980 points of sale. 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, 2012, Telcel owned and operated 310 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, 2012, approximately 75% of Telcels sales of handsets were generated by cellular distributors, 22% from sales in company-owned stores and 3% from
direct sales to corporate accounts.



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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 and at
Telcels and other designated retail stores and electronically through the internet websites of Telcel and of banks.

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.

Customer Service

Telcel
places a high priority on providing its customers with quality customer care and support, with approximately 61% 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, 1900 MHz frequency spectrum and the 1.7/2.1 GHz frequency spectrum. As of December 31, 2012, 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 1900 and 850 MHz frequency spectrum;
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | UMTS/HSPA 3G technologies in the 850 and 1900 MHz frequency spectrum; and
| | - |  | -------------------------------------------------------------------------



| |  |  | LTE technology in the 1.7/2.1 GHz frequency spectrum.
| | - |  | -----------------------------------------------------

TDMA network

Telcel has a 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; it is expected to
decrease in size and importance as the migration to newer networks increases. As of December 31, 2012, Telcels TDMA subscriber base represented approximately 0.27% 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 MHz and 1900 MHz spectrum since 2006. As of December 31, 2012, Telcels GSM subscriber base represented approximately 75.30% 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 200,370 localities), including all the major cities and roads in Mexico.



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3G network

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

Telcel is the first operator to deploy UMTS/HSPA technologies in Mexico. As of December 31, 2012, Telcels UMTS/HSPA network covered approximately 130,152 localities, including all of
Mexicos principal cities. Telcel plans to continue expanding its 3G coverage in Mexico throughout 2013 to urban as well as rural areas. As of December 31, 2012, Telcels UMTS/HSPA subscriber base represented approximately 24.42% of
Telcels total subscribers. We expect to improve our network coverage in cities and areas with high data usage through the ongoing deployment of HSPA+ protocol.

4G network

In 2010, Telcel obtained additional spectrum in the
1.7/2.1 GHz Band (usually known as Advanced Wireless Services, or AWS) 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. In November 2012, Telcel began offering 4G services
using a LTE technology based network in the 9 major cities and will continue growing its coverage to other main and medium cities through 2013. LTE allows us to offer higher bitrates in mobile data services and it is the leading 4G technology across
the globe. As of December 31, 2012, Telcels LTE subscriber base represented approximately 0.01% of Telcels total subscribers.

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 S.A. de C.V. and Telefónica S.A. Telcel also competes with Comunicaciones Nextel de México, S.A. de C.V. 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 publish and distribute yellow-pages and 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 customers.

Internet Directory

Through our Sección Amarilla business, we provide a wide range of advertising, e-commerce and digital marketing services, from local directory services, maps and videos to search engine
optimization (SEO) and search engine marketing (SEM) strategies for small and medium business and large advertisers, e-commerce platforms, application development for mobile devices, digital discount coupons and social media solutions.

We are the largest 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 in Mexico. Telmex is the leading
provider of fixed-line voice and broadband services in Mexico. As of December 31, 2012, we had approximately 14.2 million fixed-line voice subscribers and 8.4 million broadband subscribers in Mexico.

In 2012, our Mexico Fixed segment had revenues of Ps.106,025 million, representing 13.7% of our consolidated revenues for such period. As
of December 31, 2012, our Mexico Fixed operations represented approximately 35.3% of our total RGUs, as compared to 39.3% at December 31, 2011.

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, |       
|                                 |  | 2010         |        |   | 2011 |  |        | 2012 | 
|RGUs (thousands):                |  |              |        |   |      |  |        |      |  |  |        |  
|Fixed voice                      |  |              | 15,591 |   |      |  | 14,814 |      |  |  | 14,224 |  
|Broadband                        |  |              | 7,359  |   |      |  | 7,952  |      |  |  | 8,445  |  
|                                 |  |              |        |   |      |  |        |      |  |  |        |  
|Total                            |  |              | 22,950 |   |      |  | 22,766 |      |  |  | 22,669 |  
|                                 |  |              |        |   |      |  |        |      |  |  |        |  
|Traffic (year ended) (millions): |  |              |        |   |      |  |        |      |  |  |        |  
|Long-distance minutes            |  |              | 25,636 |   |      |  | 27,320 |      |  |  | 33,156 |  
|Interconnection minutes          |  |              | 37,868 |   |      |  | 37,792 |      |  |  | 38,368 |  
|                                 |  |              |        |   |      |  |        |      |  |  |        |  
|Total minutes                    |  |              | 63,504 |   |      |  | 65,112 |      |  |  | 71,524 |  
|                                 |  |              |        |   |      |  |        |      |  |  |        |  
|Churn rate (year ended):         |  |              |        |   |      |  |        |      |  |  |        |  
|Fixed voice                      |  |              | 0.9    | % |      |  | 1.2    | %    |  |  | 1.1    | %
|Broadband                        |  |              | 1.6    | % |      |  | 1.4    | %    |  |  | 1.4    | %

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 market segments.

Telmex charges for fixed-line local telephone service include (a) installation charges, (b) monthly line-rental charges,
(c) local-service calls, (d) digital services and (e) charges for other services, such as the transfer and reconnection of a line to another address. 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. The concession Telmex holds to operate a public network for basic telephone services allows but does not require Telmex to base its charges on the duration of each
call. Telmex does not currently charge by duration of invoiced calls in any region, except in the case of prepaid services.

Telmexs rates for domestic long-distance service are based on call duration and type of service (direct-dial or operator-assisted)
and apply once customers exceed the number of minutes included in their service packages.

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. These charges apply once customers exceed the number of minutes included in their plan. Customers can choose from a
variety of discount rate plans. Telmex has not increased its rates since 2001 for local telephone service and since 1999 for domestic long-distance service and



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international long-distance calls, continuing its trend of offering lower rates in real terms every year. In addition, Telmex provides interconnection services pursuant to which
(a) long-distance, local and mobile-phone carriers operating in Mexico establish through 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. 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.

Data Services and Products

Telmexs data service business is comprised of corporate network services and internet access service. Corporate network services consist of voice, video and data-transmission between two or more end
points using private circuits. Telmexs principal products for corporate networks are Ladaenlaces (Ladalinks) and multi-service virtual private networks (VPNs), which allows Telmex to provide different levels of service
applications. Telmex also provides specialized assistance and technical support for these applications, as well as 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 and e-mail. Infinitum operates over Asymmetric Digital Subscriber Line technology.

Other Services and Products

Consistent with Telmexs strategy
of increasing the value of its fixed-line service, it has focused on customers needs, and offers packages of telecommunications services that include internet access and a customized mix of local calls, minutes for domestic calls,
international long-distance calls and calls to wireless phones.

In addition, Telmex provides various telecommunications and
telecommunications-related products and services that include sales of computers, telecommunications equipment and accessories, public phone services and billing and collection services to third parties.

Regarding third party services, in November 2008 Telmex entered into several agreements with Dish México S. de R.L. de C.V. and
its affiliates, which operate a DTH Pay TV system in Mexico pursuant to which Telmex is currently providing customary services, including billing and collection, among others.

Sales and Distribution

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



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Billing and Collection

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

Our Networks and Technology

Telmexs local and long-distance fiber optic network consists of 167,604 kilometers that connect all major cities in Mexico. In
addition, Telmexs local and long-distance fiber optic network connects Mexico, through submarine cables, with 29 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.

Competition

Telmex faces competition from other holders of long-distance and local-service licenses, Pay TV operators that provide
telephone and internet service and wireless telecommunications providers. Telmexs main competitors in Mexico are Alestra S. de R.L. de C.V., Axtel S.A.B. de C.V., Maxcom Telecomunicaciones S.A.B. de C.V, Megacable Holdings S.A.B. de C.V.,
Cablevisión Inc. and Cablemás S.A. de C.V.



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BRAZIL OPERATIONS

We offer wireless, fixed-line voice, broadband, Pay TV and directory services and products in Brazil through our subsidiaries Americel
S.A. (Americel), Claro S.A. (Claro Brasil), Embratel, Star One S.A. (Star One) and Net Serviços, the largest cable television operator in Brazil. We offer wireless services under the Claro brand and
fixed-line services under the Claro, Embratel and NET brands. In February 2012, we acquired a controlling interest in Net Serviços.

As of December 31, 2012, we had approximately 65.2 million wireless subscribers, approximately 80.0% of which were prepaid customers, which represented a market share of 24.1%. As of
December 31, 2012, we also had approximately 10.3 million fixed-line subscribers, 5.8 million broadband subscribers and 12.6 million Pay TV subscribers.

In 2012, our Brazil segment had revenues of Ps.209,787 million, representing 27.1% of our consolidated revenues for such period. As of December 31, 2012, our Brazil segment operations represented
approximately 24.9% of our total wireless subscribers, as compared to 25.0% at December 31, 2011, and approximately 44.6% of our total RGUs, as compared to 40.8% at December 31, 2011.

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. Operating data in the following table include Net Serviços.



|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|-------------------------------- |  | ------------ | ----------- | - | ---- |  | ----------- | ---- |  |  | ----------- | -
|                                 |  | December 31, |            
|                                 |  | 2010         |             |   | 2011 |  |             | 2012 | 
|Wireless Operations:             |  |              |             |   |      |  |             |      |  |  |             |  
|ARPU (year ended)                |  |              | Ps.     145 |   |      |  | Ps.     135 |      |  |  | Ps.     107 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |      |  |  |             |  
|Prepaid                          |  |              | 41,394      |   |      |  | 47,710      |      |  |  | 52,170      |  
|Postpaid                         |  |              | 10,243      |   |      |  | 12,669      |      |  |  | 13,069      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 51,637      |   |      |  | 60,379      |      |  |  | 65,239      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Market share                     |  |              | 25.4        | % |      |  | 25.4        | %    |  |  | 24.1        | %
|MOUs (year ended)                |  |              | 96          |   |      |  | 100         |      |  |  | 115         |  
|Wireless churn rate (year ended) |  |              | 3.0         | % |      |  | 3.7         | %    |  |  | 3.7         | %
|                                 |  |              |            
|Fixed Operations:                |  |              |             |   |      |  |             |      |  |  |             |  
|RGUs (thousands):                |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 7,935       |   |      |  | 9,158       |      |  |  | 10,280      |  
|Broadband                        |  |              | 3,770       |   |      |  | 4,661       |      |  |  | 5,752       |  
|Pay TV                           |  |              | 6,901       |   |      |  | 9,770       |      |  |  | 12,554      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 18,606      |   |      |  | 23,589      |      |  |  | 28,586      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Traffic (year ended) (millions): |  |              |             |   |      |  |             |      |  |  |             |  
|Long-distance minutes            |  |              | 15,491      |   |      |  | 19,140      |      |  |  | 23,692      |  
|Interconnection minutes          |  |              | 7,409       |   |      |  | 8,719       |      |  |  | 8,848       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total minutes                    |  |              | 22,900      |   |      |  | 27,859      |      |  |  | 32,540      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Churn rate (year ended):         |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 5.2         | % |      |  | 2.5         | %    |  |  | 1.6         | %
|Broadband                        |  |              | 1.5         | % |      |  | 1.4         | %    |  |  | 1.3         | %
|Pay TV                           |  |              | 1.3         | % |      |  | 1.5         | %    |  |  | 1.7         | %



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Services and Products

Wireless Voice Services and Products

Claro Brasil offers wireless
voice services under a variety of rate plans to meet the needs of different market 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. 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 provides local fixed telephony
services and is present in all Brazilian states, marketing to residential customers its wireless local services under the Claro Fixo brand and, in connection with Net Serviços, provides its fixed-line services under the NET Fonebrand. Embratel also offers services to large-sized and medium-sized business customers under the VipLineandRede 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 the Brazilian Agency of Telecommunications (Agência Nacional de Telecomunicações,or 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.

As discussed above, Net Serviços provides a fixed-line telephony service in partnership with Embratel under the NET Fonebrand. This product, which uses Voice over Internet Protocol (VoIP) technology, works like conventional fixed-line telephony and allows the user to make local, long-distance and international calls to any telephone or handset. NET
Fonehad approximately 5.3 million subscribers as of December 31, 2012, compared to 3.8 million as of December 31, 2011, and is available in more than 130 cities.

Broadband and Data Services

Embratel is also one of Brazils leading providers of data communication services, serving a client base that includes a 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.

Net Serviços is Brazils leading provider of broadband internet services to residential customers,
marketing its services under the Net Virtua brand. This product is available at various download speeds. NET Virtuahad approximately 4.3 million subscribers as of December 31, 2012, compared to 4.1 million as of
December 31, 2011.

Pay TV

Net Serviços is the leading provider of cable Pay TV services to residential customers in Brazil. As of December 31, 2012, Net Serviços had approximately 9.4 million cable Pay TV
subscribers and offered digital cable in 80 locations, including Rio de Janeiro and São Paulo. Among others, Net Serviços offers Pay TV and



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Pay-Per-View programming under the NET brand, digital Pay TV under the NET Digital brand and high definition (HD) Pay TV under the NET Digital HD MAX brand, as
well as digital video recorder, interactive and video-on-demand services. Net Serviços is also the only Pay TV operator in Brazil to broadcast content in HD 3D. In addition to offering traditional cable Pay TV services, Net Serviços
offers Multichannel Multipoint Distribution Service (MMDS) Pay TV services in Recife, Porto Alegre and Curitiba. As of December 31, 2012, Net Serviços had 24,513 MMDS Pay TV subscribers.

Net Serviços also offers bundled packages of services, including triple play services, which combine Pay TV, broadband internet
and fixed-line telephone services. In addition, Net Serviços recently introduced the Multi Combo service package, which offers wireless telephone, fixed-telephone and Pay TV services, in conjunction with Claro Brasil and Embratel.

Embratel also offers Pay TV services through DTH technology. Monthly subscription fees for these services range in price from
R$39.90 to R$184.90, including taxes.

Other Services

Embratel, through its subsidiary Star One, 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, sound and image transmission and maritime communications services, as well as call-center services through, its subsidiary
Brasil Center Comunicações Ltda. (Brasil Center) to related third parties, including Claro Brasil and Net Serviços.

Marketing

Claro Brasil has developed a variety of promotional programs and
products tailored to meet its customers mobility needs while increasing its market share. These promotional programs and products represent the companys most significant competitive advantages together with technology innovationit
was the first telecommunications company in Brazil to offer 4G services. Claro Brasil also aggressively targets corporate customers by offering customized products and services and negotiating discounts on a case-by-case basis. Additionally, Claro
Brasil has innovative customer loyalty programs that help it retain customers.

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 21, the carrier-selection code assigned to Embratel. In addition, Embratel negotiates
discounts with corporate customers on a case-by-case basis and employs campaigns that target specific groups of its corporate customers, such as small- and medium-sized businesses or regional groups.

Net Serviços uses both a centralized marketing team and regional marketing specialists to help meet its goals of increased market
penetration, customer loyalty and revenue per household. In addition, Net Serviços is constantly monitoring its subscriber preferences and the markets in which it operates to be able to meet its goals through a variety of tailored programs.

Sales and Distribution

Claro Brasil markets its services primarily through retail chains, which amount to approximately 9,554 points of sale, exclusive distributors, which represent approximately 4,659 points of sale, and
its approximately 323 company-owned stores, which offer one-stop shopping for a variety of cellular services and products. Claro Brasil also sells and distributes its products and services over the internet. Claro Brasils stores also serve as
customer-service centers, and Claro Brasil expects to continue to open new service centers as



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necessary in order to offer its products directly to subscribers in more effective ways. Claro Brasil also has a corporate-sales group to cater to the needs of its large corporate and other
high-usage customers. In the year ended December 31, 2012, approximately 56% of Claro Brasils sales of handsets were generated by retail chains, 31% by exclusive distributors and approximately 13% from sales in company-owned stores.

Embratels local fixed telephony service, Claro Fixo, is marketed in person through exclusive dealers, through
BrasilCenter and the internet. Embratels other local fixed-telephone service, NET Fone, is marketed through Net Serviçoss sales and distribution channels. Embratels Pay TV service, Claro TV, is marketed in
person through exclusive dealers and its company-owned stores, by phone through call-centers and by the internet through Embratels website. In addition, Embratel has a corporate-sales group dedicated to the needs of its large corporate and
other high-usage customers.

Net Serviçoss services are marketed through coordinated efforts that include
telemarketing, the internet, mail advertising, door-to-door sales and retail sales. In addition, Net Serviços also relies on third-party vendors to market its services through call-centers.

Billing and Collection

Wireless Operations

Claro Brasil bills its postpaid customers through monthly invoices that detail itemized charges and services. Customers may pay their bills with a credit card, through online banking, or in person at
banks, post offices or federal lottery houses(casas lotéricas).

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

A Claro Brasil prepaid customer who purchases a card has between 5 and 180 days from the date of activation of the card to use the
airtime, depending on the amount added. After such time, the customer can no longer use that airtime for outgoing calls 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.

Net Serviços bills its customers through monthly invoices that detail itemized
charges and services, including monthly subscription fees, broadband and Pay TV services and Embratels fixed-line voice services, as incurred by customers, in addition to applicable taxes. Accounts that are more than 30 days past due are
considered disconnected, at which time Net Serviços blocks the accounts signal. If the customer remains in arrears, Net Serviços proceeds to collect any equipment, such as set-top boxes, that may be located in the customers
location. In addition, Net Serviços focuses on customer service to reduce bad-debt expenses. In recent years, that strategy has proved successful, as bad-debt as a percentage of sales constituted only 0.8% in 2010, 0.7% in 2011 and 1.3% in
2012.



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Our Networks and Technology

Wireless Networks

Claro Brasil owns and operates wireless networks
using GSM and 3G technologies. As of December 31, 2012, Claro Brasils GSM network, which Claro Brasil continues rolling out, covered more than 3,631 cities and 91.25% of Brazils population. In addition, Claro Brasils 3G
network, which was the first in Brazil and which Claro Brasil continues rolling out, covers 1,150 cities and 69.89% of Brazils population.

Fixed-line Networks

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 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
59,211 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 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 9 different cable systems in which it has various
ownership interests. Embratels networks have also been modified to use Net Serviçoss coaxial cable networks to provide telephony services to Net Serviçoss 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, in areas where installation of fiber cables is difficult, with
a total range of 16,254 kilometers and seven 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 Claro Fixoresidential customers using CDMA wireless technology.

Net
Serviços has an advanced network that uses coaxial and fiber optic technologies that allows it to provide a wide range of services and products at bandwidth capacities of 450 MHz, 550 MHz and 750 MHz or above. Net Serviçoss
network also helps it reduce piracy by enabling Net Serviços to scramble the signal of up to 100% of the homes the network passes. Net Serviços also believes that its network is equipped to respond to future customer
preferences, as it has bi-directional technology for almost all homes passed. The network also has in place the architecture necessary to provide pay-per-view and video-on-demand services in additional regions once it becomes commercially viable to
do so. As of December 31, 2012, Net Serviçoss network had over 98,000 kilometers of cable and passed approximately 16.5 million homes in 141 localities. In addition, in 2012 Net Serviços began operating a network that
uses HFC technology, and it expects that this network will allow it to reach 42 cities by the end of the year. Net Serviços complements its traditional cable network with its MMDS network, through which it reaches over 24,500 subscribers.
MMDS is a system in which programming is sent by microwave transmitters from a larger antenna in a tower or building to a smaller receiving antenna located at the subscribers premises.

Satellite Network

Embratel, and Star One, have the most extensive satellite system in Latin America with a fleet covering the entire territory of South America and Mexico, as well as part of Central America and part of
Florida. Star One currently has seven satellites in full operation (i.e., in geostationary orbit), including one it owns jointly with SES. These satellites currently operate in the C-band and/or Ku-band frequencies. Star One also currently operates
two satellite control centers that are certified by the International Organization for Standardization.



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Embratel and Star One have a program to replace satellites that are nearing or have reached
the end of their contractual lives, thereby ensuring the continuity and quality of their communication services. Pursuant to that program, Star One successfully launched the C-3 satellite in November 2012 to replace the B-3 satellite. In addition,
in January 2012, Star One entered into a contract with Space System/Loral for the in-orbit delivery of a new Ku-band satellite to be launched in 2014, the Star One C4. This new satellite is intended primarily to supply capacity for DTH services for
Claro TV in Brazil and other DTH operations in South America.

Competition

Claro Brasils principal wireless competitors are Vivo Participações S.A., TIM Participações,
Oi Participações S.A., Companhia de Telecomunicações do Brasil Central, Sercomtel S.A. and Nextel Brasil; Embratels principal fixed-line competitors are Oi Participações S.A., Companhia de
Telecomunicações do Brasil Central, Intelig Telecomunicações Ltda., Telefónica Brasil S.A. and Global Village Telecom; and Net Serviçoss principal competitors are Sky Brasil, Telefónica Brasil
S.A., Vivo Participações S.A., Oi Participações S.A. and Global Village Telecom S.A.



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COLOMBIA OPERATIONS

We offer wireless, fixed-line voice, broadband, Pay TV and directory services and products in Colombia through our subsidiaries
Comunicación Celular S.A. (Comcel), Telmex Colombia S.A. (Telmex Colombia) and Páginas Telmex S.A. We offer both our wireless and fixed-line services under the Claro brand. We are the largest wireless
telecommunications and Pay TV services provider in Colombia, measured by number of subscribers.

As of December 31, 2012,
we had approximately 30.4 million wireless subscribers, approximately 84.4% of which were prepaid customers, representing a market share of 61.8%. As of December 31, 2012, we also had approximately 1.0 million fixed-line subscribers,
1.2 million broadband subscribers and 2.0 million Pay TV subscribers.

In 2012, our Colombia segment had revenues of
Ps.73,432 million, representing 9.5% of our consolidated revenues for such period. As of December 31, 2012, our Colombia segment operations represented approximately 11.6% of our total wireless subscribers, as compared to 11.9% at
December 31, 2011, and approximately 6.5% of our total RGUs, as compared to 6.1% at December 31, 2011.

The
following table sets forth information regarding our Colombia segments subscriber base, traffic, market share and operating measures at the dates and for the periods indicated. The figures presented below, for all periods, have been adjusted
to reflect the removal of our operations in Panama from this segment:



|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|-------------------------------- |  | ------------ | ----------- | - | ---- |  | ----------- | ---- |  |  | ----------- | -
|                                 |  | December 31, |            
|                                 |  | 2010         |             |   | 2011 |  |             | 2012 | 
|Wireless Operations:             |  |              |             |   |      |  |             |      |  |  |             |  
|ARPU (year ended)                |  |              | Ps.     117 |   |      |  | Ps.     121 |      |  |  | Ps.     147 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |      |  |  |             |  
|Prepaid                          |  |              | 25,078      |   |      |  | 24,064      |      |  |  | 25,019      |  
|Postpaid                         |  |              | 4,186       |   |      |  | 4,755       |      |  |  | 5,352       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 29,264      |   |      |  | 28,819      |      |  |  | 30,371      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Market share                     |  |              | 66.9        | % |      |  | 65.5        | %    |  |  | 61.8        | %
|MOUs (year ended)                |  |              | 198         |   |      |  | 203         |      |  |  | 230         |  
|Wireless churn rate (year ended) |  |              | 3.4         | % |      |  | 4.1         | %    |  |  | 3.8         | %
|                                 |  |              |            
|Fixed Operations:                |  |              |             |   |      |  |             |      |  |  |             |  
|RGUs (thousands):                |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 571         |   |      |  | 774         |      |  |  | 986         |  
|Broadband                        |  |              | 614         |   |      |  | 875         |      |  |  | 1,190       |  
|Pay TV                           |  |              | 1,802       |   |      |  | 1,899       |      |  |  | 2,019       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 2,988       |   |      |  | 3,548       |      |  |  | 4,195       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Traffic (year ended) (millions): |  |              |             |   |      |  |             |      |  |  |             |  
|Long-distance minutes            |  |              | 32          |   |      |  | 50          |      |  |  | 71          |  
|Interconnection minutes          |  |              | 441         |   |      |  | 574         |      |  |  | 717         |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total minutes                    |  |              | 473         |   |      |  | 624         |      |  |  | 788         |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Churn rate (year ended):         |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 2.4         | % |      |  | 1.9         | %    |  |  | 1.9         | %
|Broadband                        |  |              | 2.3         | % |      |  | 1.9         | %    |  |  | 1.8         | %
|Pay TV                           |  |              | 2.4         | % |      |  | 2.1         | %    |  |  | 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 market 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 wireless 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. Certain network usage fees are subject to special regulations issued by the Communications Regulation
Commission (Comisión de Regulación de Comunicaciones, or CRC). See Regulation Colombia under this Item 4.

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 (including messaging, chat and access to social networks), 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, such as video on demand, to both corporate and residential customers under a variety of plans to meet the needs of different user segments. In addition, we offer data center and carrier services.

Our Networks and Technology

Our wireless networks, which cover approximately 71.2% of the population, use 3G technologies, and our fixed-line networks use HFC and optical fiber technologies.

Competition

Our
principal wireless competitors are Colombia Telecomunicaciones S.A., E.S.P. (Movistar) and Colombia Móvil S.A. (Tigo); and our principal fixed-line competitors are Movistar, ETB S.A. E.S.P. (Empresa de
Telecomunicaciones de Bogotá S.A. E.S.P.) and UNE EPM Telecomunicaciones S.A. E.S.P.



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##### Table of Contents

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), Telstar, S.A. and Flimay S.A. (Filmay). 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, 2012, we had approximately 27.4 million wireless subscribers, approximately 67.6% of which were prepaid customers, representing a market share of 28.4%. As of
December 31, 2012, we also had approximately 0.5 million fixed-line subscribers, 0.4 million broadband subscribers and 0.6 million Pay TV subscribers.

In 2012, our Southern Cone segment had revenues of Ps.62,018 million, representing 8.0% of our consolidated revenues for such period. As of December 31, 2012, our Southern Cone segment operations
represented approximately 10.5% of our total wireless subscribers, compared to approximately 10.9% as of December 31, 2011, and approximately 2.4% of our total RGUs, compared to 2.3% at December 31, 2011.

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, |            
|                                 |  | 2010         |             |   | 2011 |  |             | 2012 | 
|Wireless Operations:             |  |              |             |   |      |  |             |      |  |  |             |  
|ARPU (year ended)                |  |              | Ps.     129 |   |      |  | Ps.     137 |      |  |  | Ps.     142 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |      |  |  |             |  
|Prepaid                          |  |              | 16,791      |   |      |  | 17,865      |      |  |  | 18,545      |  
|Postpaid                         |  |              | 7,717       |   |      |  | 8,416       |      |  |  | 8,887       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 24,508      |   |      |  | 26,281      |      |  |  | 27,432      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Market share                     |  |              | 29.1        | % |      |  | 28.9        | %    |  |  | 28.4        | %
|MOUs (year ended)                |  |              | 145         |   |      |  | 158         |      |  |  | 160         |  
|Wireless churn rate (year ended) |  |              | 2.6         | % |      |  | 3.2         | %    |  |  | 3.1         | %
|                                 |  |              |            
|Fixed Operations:                |  |              |             |   |      |  |             |      |  |  |             |  
|RGUs (thousands):                |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 354         |   |      |  | 427         |      |  |  | 478         |  
|Broadband                        |  |              | 217         |   |      |  | 312         |      |  |  | 381         |  
|Pay TV                           |  |              | 496         |   |      |  | 597         |      |  |  | 649         |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 1,067       |   |      |  | 1,336       |      |  |  | 1,508       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Traffic (year ended) (millions): |  |              |             |   |      |  |             |      |  |  |             |  
|Long-distance minutes            |  |              | 2,472       |   |      |  | 2,499       |      |  |  | 2,546       |  
|Interconnection minutes          |  |              | 1,243       |   |      |  | 1,227       |      |  |  | 1,185       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total minutes                    |  |              | 3,715       |   |      |  | 3,726       |      |  |  | 3,731       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Churn rate (year ended):         |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 2.0         | % |      |  | 1.9         | %    |  |  | 1.6         | %
|Broadband                        |  |              | 2.8         | % |      |  | 2.7         | %    |  |  | 2.3         | %
|Pay TV                           |  |              | 3.9         | % |      |  | 4.2         | %    |  |  | 4.4         | %



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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 market 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 smartphones, 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 and broadband services to both corporate and residential
customers under a variety of plans to meet the needs of different user segments. We also offer DTH Pay TV services in Chile and Paraguay and video-on-demand services in Argentina and Paraguay.

Our Networks and Technology

In Argentina our wireless networks, which cover approximately 96.84% of the population, use GSM and 3G technologies. In Chile our wireless networks, which cover approximately 98% of the population,
use GSM and 3G technologies. In Paraguay our wireless networks, which cover approximately 71.21% of the population, use GSM and 3G technologies. In Uruguay our wireless networks, which cover approximately 91.38% of the population, use GSM and 3G
technologies. In Argentina, our fixed-line networks use pre-WiMax, Wireless Local Loop, WiMax, local point-multipoint distribution service (LMDS), HFC and Gigabit Passive Optical Networks technologies. In Chile, our fixed-line networks
use DTH and HFC technologies. In Uruguay, our fixed-line networks use LMDS and HFC technologies.



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##### Table of Contents

Competition

In Argentina, our principal wireless competitors are Telecom Personal S.A., Telefónica S.A. (Movistar) and Empresa Argentina de Soluciones Satelitales S.A.; and our principal fixed-line
competitors are Teléfonica de Argentina S.A., Telecom Argentina S.A., Global Crossing S.A., Comsat S.A. and NSS S.A. In Chile, our principal wireless competitors are Entel S.A. and Telefónica Chile S.A. (Movistar); and our principal
fixed-line competitors are Telefónica Chile S.A. (Movistar), VTR Globalcom S.A., DirecTV Latin America LLC and Grupo GTD. In Paraguay, our principal competitors are COPACO S.A. (Compañía Paraguaya de Comunicaciones S.A.),
a stated-owned monopoly in the provision of fixed voice local and international long-distance services, Telecel S.A., which is controlled by Millicom International Cellular S.A., Nucleo S.A. and Hola Paraguay S.A. In Uruguay, our principal
wireless competitors are Telefónica Móviles del Uruguay S.A. (Movistar) and the state-owned National Administration of Telecommunications (Administración Nacional de Telecomunicaciones) which is also a
fixed-voice-long-distance services monopoly.



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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) and América Móvil Perú, S.A.C. (Claro). Conecel is the largest
wireless telecommunications services provider in Ecuador and the second largest in Peru, measured by number of subscribers.

As of December 31, 2012, we had approximately 24.6 million wireless subscribers, approximately 80.8% of which were prepaid
customers, representing a market share of 52.1%. As of December 31, 2012, we also had approximately 0.6 million fixed-line subscribers, 0.3 million broadband subscribers and 0.3 million Pay TV subscribers.

In 2012, our Andean Region segment had revenues of Ps.42,495 million, representing 5.5% of our consolidated revenues for such period. As
of December 31, 2012, our Andean Region segment operations represented approximately 9.4% of our total wireless subscribers, as compared to 9.2% at December 31, 2011, and approximately 1.7% of our total RGUs, as compared to 1.5% at
December 31, 2011.

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, |            
|                                 |  | 2010         |             |   | 2011 |  |             | 2012 | 
|Wireless Operations:             |  |              |             |   |      |  |             |      |  |  |             |  
|ARPU (year ended)                |  |              | Ps.     107 |   |      |  | Ps.     110 |      |  |  | Ps.     121 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |      |  |  |             |  
|Prepaid                          |  |              | 17,738      |   |      |  | 18,765      |      |  |  | 19,919      |  
|Postpaid                         |  |              | 2,572       |   |      |  | 3,546       |      |  |  | 4,719       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 20,310      |   |      |  | 22,311      |      |  |  | 24,638      |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Market share                     |  |              | 52.8        | % |      |  | 58.9        | %    |  |  | 52.1        | %
|MOUs (year ended)                |  |              | 109         |   |      |  | 134         |      |  |  | 133         |  
|Wireless churn rate (year ended) |  |              | 2.5         | % |      |  | 2.5         | %    |  |  | 2.8         | %
|                                 |  |              |            
|Fixed Operations:                |  |              |             |   |      |  |             |      |  |  |             |  
|RGUs (thousands):                |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 171         |   |      |  | 349         |      |  |  | 584         |  
|Broadband                        |  |              | 124         |   |      |  | 188         |      |  |  | 264         |  
|Pay TV                           |  |              | 249         |   |      |  | 326         |      |  |  | 272         |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total                            |  |              | 544         |   |      |  | 863         |      |  |  | 1,120       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Traffic (year ended) (millions): |  |              |             |   |      |  |             |      |  |  |             |  
|Long-distance minutes            |  |              | 345         |   |      |  | 370         |      |  |  | 344         |  
|Interconnection minutes          |  |              | 1,003       |   |      |  | 1,169       |      |  |  | 1,214       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Total minutes                    |  |              | 1,348       |   |      |  | 1,539       |      |  |  | 1,558       |  
|                                 |  |              |             |   |      |  |             |      |  |  |             |  
|Churn rate (year ended):         |  |              |             |   |      |  |             |      |  |  |             |  
|Fixed voice                      |  |              | 2.3         | % |      |  | 2.2         | %    |  |  | 1.6         | %
|Broadband                        |  |              | 2.5         | % |      |  | 2.8         | %    |  |  | 2.6         | %
|Pay TV                           |  |              | 3.9         | % |      |  | 4.3         | %    |  |  | 5.4         | %



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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 market 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.

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 68.81% of the population, use GSM and 3G technologies, while in Peru, our wireless networks cover approximately 82% of the population and
use GSM, 3G, HSPA and HSPA+ technologies. In Ecuador, our fixed-line networks use HFC technologies, while in Peru our fixed-line networks use CDMA, HFC, DTH, copper wire, LMDS and WiMax technologies.

Competition

In Ecuador,
our principal wireless competitor is Otecel S.A. (Movistar); and our principal fixed-line competitors are Setel S.A. (Grupo TV Cable) and Corporación Nacional e Telecomunicaciones EP. In Peru, our principal wireless competitor is
Telefónica Moviles S.A. (Movistar); and our principal fixed-line and Pay TV competitors are Telefónica del Perú S.A.A., Telefónica Multimedia S.A.C. (Movistar TV) and DirecTV Peru S.R.L.



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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), CTE Telecom Personal, S.A. de C.V. (CTE Telecom Personal), Telecomunicaciones de Guatemala, S.A.
(Telgua), Empresa Nicaragüense de Telecomunicaciones, S.A. (Enitel), Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras), Claro CR Telecomunicaciones S.A. (Claro Costa Rica)
and Claro Panamá, S.A. (Claro Panamá). We are the largest wireless telecommunications services provider in Nicaragua, the second largest in El Salvador, Guatemala and Honduras and the fourth largest in Panama, in each case
measured by number of subscribers.

We acquired Digicels Honduran operations in November 2011 and merged them with
Sercom in 2012. We had also agreed to acquire Digicels Salvadorian subsidiary, Digicel, S.A. de C.V., but did not receive regulatory approval to complete the transaction. In October 2012, we terminated our agreement to acquire Digicels
Salvadorian subsidiary, following the procedures contemplated by that agreement. In October 2012, Claro Costa Rica obtained a license to provide DTH services for a period of 15 years.

As of December 31, 2012, we had approximately 15.3 million wireless subscribers, approximately 90.77% of which were prepaid
customers, which represented a market share of 30.3%. As of December 31, 2012, we also had approximately 2.6 million fixed-line subscribers, 0.6 million broadband subscribers and 0.7 million Pay TV subscribers.

In 2012, our Central America segment had revenues of Ps.23,047 million, representing 3.0% of our consolidated revenues for such period.
As of December 31, 2012, our Central America segment operations represented approximately 5.8% of our total wireless subscribers, as compared to 5.3% at December 31, 2011 and approximately 6.1% of our total RGUs, as compared to 6.3% at
December 31, 2011.

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, |       
|                                 |  | 2010         |        |   | 2011 |     |        | 2012 | 
|Wireless Operations:             |  |              |        |   |      |     |        |      |  |     |        |  
|ARPU (year ended)                |  | Ps.          | 70     |   |      | Ps. | 73     |      |  | Ps. | 78     |  
|Subscribers (thousands):         |  |              |        |   |      |     |        |      |  |     |        |  
|Prepaid                          |  |              | 10,215 |   |      |     | 11,903 |      |  |     | 13,861 |  
|Postpaid                         |  |              | 709    |   |      |     | 1,029  |      |  |     | 1,410  |  
|                                 |  |              |        |   |      |     |        |      |  |     |        |  
|Total                            |  |              | 10,924 |   |      |     | 12,932 |      |  |     | 15,271 |  
|                                 |  |              |        |   |      |     |        |      |  |     |        |  
|Market share                     |  |              | 29.8   | % |      |     | 27.9   | %    |  |     | 30.3   | %
|MOUs (year ended)                |  |              | 115    |   |      |     | 139    |      |  |     | 153    |  
|Wireless churn rate (year ended) |  |              | 2.1    | % |      |     | 2.1    | %    |  |     | 2.5    | %
|                                 |  |              |       
|Fixed Operations:                |  |              |        |   |      |     |        |      |  |     |        |  
|RGUs (thousands):                |  |              |        |   |      |     |        |      |  |     |        |  
|Fixed voice                      |  |              | 2,305  |   |      |     | 2,440  |      |  |     | 2,594  |  
|Broadband                        |  |              | 376    |   |      |     | 474    |      |  |     | 566    |  
|Pay TV                           |  |              | 550    |   |      |     | 707    |      |  |     | 736    |  
|                                 |  |              |        |   |      |     |        |      |  |     |        |  
|Total                            |  |              | 3,231  |   |      |     | 3,621  |      |  |     | 3,896  |  
|                                 |  |              |        |   |      |     |        |      |  |     |        |  
|Traffic (year ended) (millions): |  |              |        |   |      |     |        |      |  |     |        |  
|Long-distance minutes            |  |              | 2,101  |   |      |     | 2,150  |      |  |     | 2,594  |  
|Interconnection minutes          |  |              | 868    |   |      |     | 792    |      |  |     | 693    |  
|                                 |  |              |        |   |      |     |        |      |  |     |        |  
|Total minutes                    |  |              | 2,969  |   |      |     | 2,942  |      |  |     | 3,287  |  
|                                 |  |              |        |   |      |     |        |      |  |     |        |  
|Churn rate (year ended):         |  |              |        |   |      |     |        |      |  |     |        |  
|Fixed voice                      |  |              | 1.0    | % |      |     | 0.8    | %    |  |     | 0.7    | %
|Broadband                        |  |              | 1.8    | % |      |     | 1.7    | %    |  |     | 1.3    | %
|Pay TV                           |  |              | 2.6    | % |      |     | 2.4    | %    |  |     | 3.4    | %



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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 market 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, e-mail services and access to social networking and instant messaging applications.

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 91.0% of the population, use 3G and GSM technologies. In Guatemala our wireless networks, which cover approximately 89% of the population, use 3G and GSM technologies. In Honduras our wireless networks, which cover approximately
71% of the population, use 3G and GSM technologies. In Nicaragua our wireless networks, which cover approximately 79.0% of the population, use GSM technologies. In Panama our wireless networks, which cover approximately 84.8% of the population, use
3G and GSM technology. Our wireless networks in Costa Rica, which cover approximately 56.0% of the population, use 3G and 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 Telemóvil El Salvador, S.A. (Tigo), Telefónica Móviles El Salvador, S.A. de C.V., Digicel S.A de C.V., a Millicom Subsidiary,
and Intelfon S.A. de C.V., and our principal fixed-line competitor is Amnet S.A. In Guatemala, our principal wireless competitors are Comunicaciones Celulares, S.A. (Tigo) and Telefónica Móviles Guatemala, S.A. In Honduras, our
principal wireless competitors are Telefónica Celular, S.A. (CELTEL) and Empresa Hondureña de Telecomunicaciones (Honducel), and our principal fixed-line competitor is Empresa Hondureña de Telecomunicaciones (Hondutel). In
Nicaragua, our principal wireless competitor is Telefonía Celular de Niacaragua, S.A. In Panama, our principal wireless and Pay TV competitors are Telefónica Móviles Panamá S.A., Cable & Wireless Panamá
S.A., Digicel Cable Onda and SKY Panamá. In Costa Rica, our principal competitors are the Instituto Costarricense de Electricidad (ICE), Telefónica de Costa Rica, S.A. and Amnet S.A.



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UNITED STATES OPERATIONS

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

On January 6, 2012, we acquired DLA, Inc. (DLA). DLA is a leader in the development, integration and delivery of
entertainment products made for digital distribution in Latin America. DLA offers Pay TV content and entertainment solutions, including on-demand services (basic, transactional or by subscription) to network providers in Latin America, Spain,
Portugal, the Caribbean and the Hispanic market in the United States. During the third quarter of 2012, we launched a new product called Claro Video, which delivers unlimited over-the-top content, such as movies and TV series for a
monthly fixed fee in Mexico, Colombia and Brazil.

On June 19, 2012, our subsidiary Tracfone Wireless Inc. acquired 100%
of the mobile virtual network business of Simple Mobile, Inc., which is one of the fastest growing mobile virtual network operators (MVNOs) in the United States, with approximately 1.4 million subscribers.

As of December 31, 2012, we had approximately 22 million wireless subscribers, all of which were prepaid
customers, which represented a 35% share of the prepaid wireless market. In 2012, our United States segment had revenues of Ps.63,573 million, representing 8.2% of our consolidated revenues for such period. As of December 31, 2012, our United
States segment operations represented approximately 8.6% of our total wireless subscribers, as compared to 8.2% as of December 31, 2011.

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, |            
|                                 |  | 2010         |             |   | 2011 |  |             | 2012 | 
|ARPU (year ended)                |  |              | Ps.     161 |   |      |  | Ps.     190 |      |  |  | Ps.     225 |  
|Subscribers (thousands):         |  |              |             |   |      |  |             |      |  |  |             |  
|Prepaid                          |  |              | 17,749      |   |      |  | 19,762      |      |  |  | 22,392      |  
|Market share                     |  |              | 39.7        | % |      |  | 29.0        | %    |  |  | 35.0        | %
|MOUs (year ended)                |  |              | 234         |   |      |  | 378         |      |  |  | 457         |  
|Wireless churn rate (year ended) |  |              | 4.0         | % |      |  | 4.2         | %    |  |  | 3.9         | %

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 ten wireless service providers and re-sell 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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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, S.A. (Codetel) and Telecomunicaciones de Puerto Rico, Inc. (Telpri). We are the largest wireless telecommunications services provider in the Dominican
Republic and the second largest in Puerto Rico, measured by number of subscribers.

As of December 31, 2012, we had
approximately 5.8 million wireless subscribers, approximately 74.9% of which were prepaid customers, which represented a market share of 45.4%. As of December 31, 2012, we also had approximately 1.3 million fixed-line subscribers,
0.6 million broadband subscribers and 0.17 million Pay TV subscribers.

In 2012, our Caribbean segment had revenues
of Ps.27,441 million, representing 3.5% of our consolidated revenues for such period. As of December 31, 2011, our Caribbean segments operations represented approximately 2.2% of our total wireless subscribers, as compared to 2.3% at
December 31, 2011, and approximately 3.4% of our total RGUs, as compared to 3.7% at December 31, 2011.

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, |      
|                                 |  | 2010         |       |   | 2011 |     |       | 2012 | 
|Wireless Operations:             |  |              |       |   |      |     |       |      |  |     |       |  
|ARPU (year ended)                |  | Ps.          | 163   |   |      | Ps. | 179   |      |  | Ps. | 201   |  
|Subscribers (thousands):         |  |              |       |   |      |     |       |      |  |     |       |  
|Prepaid                          |  |              | 5,102 |   |      |     | 4,200 |      |  |     | 4,382 |  
|Postpaid                         |  |              | 1,392 |   |      |     | 1,392 |      |  |     | 1,466 |  
|                                 |  |              |       |   |      |     |       |      |  |     |       |  
|Total                            |  |              | 6,494 |   |      |     | 5,592 |      |  |     | 5,848 |  
|                                 |  |              |       |   |      |     |       |      |  |     |       |  
|Market share                     |  |              | 41.6  | % |      |     | 47.6  | %    |  |     | 45.4  | %
|MOUs (year ended)                |  |              | 303   |   |      |     | 328   |      |  |     | 327   |  
|Wireless churn rate (year ended) |  |              | 4.9   | % |      |     | 5.2   | %    |  |     | 4.0   | %
|                                 |  |              |      
|Fixed Operations:                |  |              |       |   |      |     |       |      |  |     |       |  
|RGUs (thousands):                |  |              |       |   |      |     |       |      |  |     |       |  
|Fixed voice                      |  |              | 1,483 |   |      |     | 1,426 |      |  |     | 1,365 |  
|Broadband                        |  |              | 559   |   |      |     | 590   |      |  |     | 628   |  
|Pay TV                           |  |              | 102   |   |      |     | 143   |      |  |     | 172   |  
|                                 |  |              |       |   |      |     |       |      |  |     |       |  
|Total                            |  |              | 2,144 |   |      |     | 2,159 |      |  |     | 2,165 |  
|                                 |  |              |       |   |      |     |       |      |  |     |       |  
|Traffic (year ended) (millions): |  |              |       |   |      |     |       |      |  |     |       |  
|Long-distance minutes            |  |              | 5,495 |   |      |     | 5,357 |      |  |     | 4,953 |  
|Interconnection minutes          |  |              | 4,439 |   |      |     | 3,307 |      |  |     | 2,836 |  
|                                 |  |              |       |   |      |     |       |      |  |     |       |  
|Total minutes                    |  |              | 9,934 |   |      |     | 8,664 |      |  |     | 7,789 |  
|                                 |  |              |       |   |      |     |       |      |  |     |       |  
|Churn rate (year ended):         |  |              |       |   |      |     |       |      |  |     |       |  
|Fixed voice                      |  |              | 1.6   | % |      |     | 1.5   | %    |  |     | 1.7   | %
|Broadband                        |  |              | 3.0   | % |      |     | 2.8   | %    |  |     | 2.5   | %
|Pay TV                           |  |              | 2.0   | % |      |     | 2.7   | %    |  |     | 2.5   | %

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 market segments. The plans are either postpaid, where the customer is billed monthly for the previous month and may terminate the



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plan at any time, subject to certain exceptions such as, in the case of Puerto Rico only, an early termination fee, 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 CDMA, GSM and 3G roaming services to customers of our international roaming partners.

In connection with the provision of our voice services in the Dominican Republic, 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.

In Puerto Rico, we
have established reverse toll billing, under which, the fees for connecting our fixed-line customers calls to other wireless providers customers are paid by such wireless providers. In July 2012, under the Intercarrier
Compensation Reform issued by the FCC, we entered into bill and keep agreements governing the interconnection of local traffic between all wireless carriers and our fixed-line customers.

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 in the Dominican Republic.

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. In addition, we offer VOIP and network
monitoring services in Puerto Rico.

Our Networks and Technology

In the Dominican Republic our wireless networks, which cover approximately 97.5% of the population, use CDMA, GSM and 3G technologies. In
Puerto Rico, our wireless networks, which cover approximately 95% of the population, use CDMA, GSM, 3G and LTE technologies. In the Caribbean, our networks use POTS, VOIP, broadband, DTH and Internet Protocol television technologies and DTH
satellite TV Solution. In the Dominican Republic, our television market share is 29%, the largest of any provider.

Competition

In the Dominican Republic, our principal wireless competitor is Orange Dominicana S.A., and our principal fixed-line
competitor is Tricom S.A. The Dominican television market is highly competitive, with over 100 cable companies operating in the country, the most important being Tricom, Aster, Wind and Sky. The Puerto Rican wireless market is highly
competitive with AT&T Mobility Puerto Rico Inc., Sprint Nextel Corp., T-Mobile USA Inc. and PR Wireless Inc. (Open Mobile) and 10 MVNOs 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 AT&T Mobility Puerto Rico Inc., Choice Cable, Liberty Cablevision of Puerto Rico LLC, WorldNet Telecommunications, Inc. and other competitive local
exchange carriers.



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OTHER INVESTMENTS

Investment in KPN

As of December 31, 2012, we owned 29.77% of the
outstanding shares of KPN. KPN is the leading telecommunications and IT service provider in The Netherlands, offering fixed-line service, wireless service, internet and TV to consumers. KPN offers business customers complete telecommunications and
IT solutions. KPN IT Solutions (previously known as Getronics) offers global IT services and is the Benelux market leader in the area of infrastructure and network related IT solutions. In Germany and Belgium, KPN pursues a multi-brand strategy in
its mobile operations. KPN provides wholesale network services to third parties and operates an IP-based infrastructure with global scale in international wholesale through iBasis.

In April 2013, KPN launched a rights offering to raise up to 3 billion. We have agreed to subscribe for new shares in the rights
offering, in proportion to our current ownership of KPN shares. We have entered into a relationship agreement with KPN which, among other provisions, grants us the ability to designate two individuals for election to KPNs supervisory board.

Investment in Telekom Austria

As of December 31, 2012, we owned approximately 23.69% of the outstanding shares of Telekom Austria. Telekom Austria, is the leading communications provider in Central and Eastern Europe with more
than 23 million customers. Telekom Austria is currently operating in eight countries: Austria (A1), Slovenia (Si.mobil), Croatia (Vipnet), the Republic of Serbia (Vip mobile) and the Republic of Macedonia (Vip operator), Bulgaria (Mobiltel),
Belarus (velcom) and Liechtenstein (mobilkom liechtenstein). Together, these eight countries comprise a market of approximately 41 million. Telekom Austrias portfolio encompasses products and services of voice telephony, broadband Internet,
multimedia services, data and IT solutions, wholesale as well as mobile payment solutions.



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REGULATION

Mexico

Applicable Legislation

The Federal Telecommunications Law (Ley Federal de Telecomunicaciones), the General Communications Law (Ley de Vías
Generales de Comunicación) and regulation adopted under those statutes provide the general legal framework for the regulation of telecommunications services in Mexico.

Under the Federal Telecommunications Law, an operator of public telecommunications networks, such as Telcel or Telmex, must operate under
a concession granted by the Mexican Ministry of Communications and Transportation (Secretaría de Comunicaciones y Transportes, or 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 frequencies of radio-electric spectrum generally has a term of up to 20 years and may be extended for additional 20-year terms. 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.

The Federal Telecommunications Law requires public telecommunications concessionaires to establish an open-network architecture that permits interconnection and interoperability.

Principal Regulatory Authorities

The SCT, through the Federal Telecommunications Commission (Comisión Federal de Telecomunicaciones, or Cofetel), is the government agency principally responsible for regulating
telecommunications services in Mexico.

Cofetel is an independent agency within the SCT, headed by 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 the SCT under the Federal Telecommunications Law and the
telecommunications regulations have been delegated to Cofetel.

The Federal 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, public order or the national
economy, natural disasters and public unrest. The Federal 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 the Federal Consumer Bureau (Procuraduría Federal del Consumidor, or Profeco) under the Federal Consumer Protection Law (Ley Federal de Protección al Consumidor). This law
regulates publicity, the quality of services and information required to be provided to consumers and provides a mechanism to address consumer complaints. A recent amendment to this law also permits class actions for consumer claims. Profeco has the
authority to impose fines, which can be significant.

Telcel Rates

The Federal 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 services with
Cofetel prior to implementing such rates. Cofetel is authorized to impose specific rate requirements on any operator that is determined by Cofeco to have substantial market power under the Federal Antitrust Law. See RegulationMexican
Regulatory Proceedings under this Item 4.



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Telmex Rates

Under Telmexs concession, Telmexs rates for basic telephone services in any period, 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. Every four years, Telmex
files a model before both Cofetel and the SCT, with its projections of units of operation for basic services, costs and prices. 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, allowing Telmex to raise nominal rates to keep pace with inflation (minus a productivity factor set for the telecommunications
industry), subject to consultation with the SCT. 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 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.
For services extending beyond basic telephone service, the Federal Telecommunications Law and Telmexs concession permit Telmex, subject to registration with Cofetel, to freely set its rates. 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.

During 2011, Cofetel notified Telmex of three resolutions mandating reductions to the interconnection rates that Telmex charges to other
telecommunications providers. Specifically, Cofetels resolutions reduced rates for 2011 by 65% for interconnection fees and 94% for transport of long-distance traffic (resale), when compared to 2010. Telmex has filed petitions to challenge
these resolutions before Cofetel and resolution of these petitions is pending. In April 2013, Cofetel issued a resolution mandating a further reduction in the 2012 interconnection fees by 38%.

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
using 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.

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.



|                             |  |                                                                      |  |              |  |                 |  |             
|---------------------------- |  | -------------------------------------------------------------------- |  | ------------ |  | --------------- |  | ------------
|Frequency                    |  | Region in Mexico                                                     |  | Initial Date |  | TerminationDate |  | FeeStructure
|Band A (1900 MHz)            |  | All PCS Regions                                                      |  | Sept. 1999   |  | Sept. 2019      |  | Upfront     
|Band B (850 MHz)             |  | Cel Regions 1, 2, 3                                                  |  | Aug. 2011    |  | Aug. 2026       |  | Annual      
|Band B (850 MHz)             |  | Cel Regions 4, 8                                                     |  | Aug. 2010    |  | Aug. 2025       |  | Annual      
|Band B (850 MHz)             |  | Cel Regions 5, 6, 7                                                  |  | Oct. 2011    |  | Oct. 2026       |  | Annual      
|Band B (850 MHz)             |  | Cel Region 9                                                         |  | Oct. 2000    |  | Oct. 2015       |  | Upfront     
|Band D (1900MHz)             |  | PCS Nationwide                                                       |  | Oct. 1998    |  | Oct. 2018       |  | Upfront     
|Band F (1900 MHz)            |  | PCS Nationwide                                                       |  | Apr. 2005    |  | Apr. 2025       |  | Annual      
|Bands B2, C, D (1.7/2.1 GHz) |  | B2: All AWS Regions; Band C: Nationwide; Band D: PCS Regions 1, 5, 8 |  | Oct. 2010    |  | Oct. 2030       |  | Annual      



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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.

Renewal

In 2010 and 2011, the eight Band B concessions covering regions outside the Mexico City area were renewed, with certain additional
conditions imposed on Telcel. Telcel challenged the imposition of some of these conditions in a process that does not affect the validity of the renewals, and a final resolution of such challenge is still pending. All of these concessions are
subject to renewal for additional 15-year terms.

On April 20, 2010, Telcel requested the renewal of the Band B
concession covering the Mexico City area (Region 9) that will expire in October 2015, and that renewal request is still pending. The Band D concessions will expire in 2018, the Band A concessions in 2019, the Band F concessions in
2025 and the nationwide 1.7/2.1 GHz concession in 2030. All of these concessions are subject to renewal for additional 20-year terms.

Concession Fees

In addition to the upfront payment applicable to all of
the 1900 MHz (F Band) concessions, 1.7/2.1 GHz (B2, C and D Bands) concessions and 850 MHz concessions (Regions I to VIII), owners of concessions granted or renewed on or after January 1, 2003 are also required to pay annual fees
(derechos) for the use and exploitation of radio spectrum bands. The amounts payable are set forth by the Federal Annual Fees Law (Ley Federal de Derechos)and vary depending on the relevant region and radio spectrum band. Currently,
Telcel is not required to pay these fees for its Bands A and D 1900 MHz concessions since they were awarded prior to 2003, but it is required to pay them for additional 10 MHz of capacity in the 1900 MHz spectrum (Band F) acquired in 2005. The
Band B concessions renewed in 2010 and 2011 required Telcel to pay an aggregate upfront fee of Ps.74.8 million, as well as to make payments of annual fees (derechos) during the term of the concessions. The grant of the nationwide 1.7/2.1 GHz
concession for a 20 year term, which occurred in October 2010, required an upfront payment of Ps.3,793 million.

Service
Quality Requirements

The concessions set forth extensive requirements for the quality and continuity of Telcels
services, including, in some cases, maximum rates of incomplete and dropped calls and connection time. In 2011, Cofetel issued a new Fundamental Technical Plan for Quality of Local Mobile Services Networks (the 2011 Technical Plan). The
2011 Technical Plan is applicable to all operators, including Telcel. The 2011 Technical Plan, which imposes additional service quality requirements for voice, SMS and internet services to those set forth in our concessions and includes a
methodology based on site measurements that may be publicly available and potential fines for non-compliance with voice-quality requirements. We believe we are in compliance with the service quality requirements of our concessions and of the 2011
Technical Plan. Nonetheless, Telcel has been notified that the SCT has commenced a number of proceedings seeking to impose penalties on Telcel on the basis of alleged non-compliance with the service quality requirements of the previous technical
plan, as well as some proceedings from alleged service quality non-compliance during network failures on January 15 and 26, 2013. Telcel is challenging the allegations and penalties in proceedings that are still pending.

Telmex Concessions

Under the Federal Telecommunications Law and related 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 Federal Telecommunications Law. Telmexs
subsidiary, Teléfonos del Noroeste, S.A. de C.V. (Telnor), holds a



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separate concession in a region located in two states in northwestern Mexico that will expire in 2026 and may be extended for an additional 15-year term thereafter. The material terms of the
Telnor concession are similar to those 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. Telmex obtained these concessions from Cofetel through a competitive bidding process for a term of up to 20 years that 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. Related 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 will not revert to the Mexican government free of charge.

Termination of Concessions

The General Communications Law, the Federal Telecommunications Law and the concessions include various provisions under which the concessions may be terminated before their scheduled expiration dates.
Under the Federal Telecommunications Law or the terms of the concessions, as applicable, the SCT may cause early termination of any of the concessions in certain cases specified by law.

The General Communications Law provides that, in the event of early termination of our concessions, all assets that are subject to such
concession would revert to the Mexican government without compensation. In the event of early termination of any of our concessions, the Mexican government would have the option to purchase the equipment, installations and other assets used directly
for the exploitation of the frequencies that are subject to such concession.

Competition

The telecommunications regulations and the concessions contain various provisions designed to introduce competition in the communications
services market. 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. Regulations have also been adopted to allow other local telephone service providers to
provide Pay TV and audio services, but to date Telmex has been unable to obtain authorization to do so.

Mexican
Regulatory Proceedings

Telcel Antitrust InvestigationsSubstantial Market Power

The Federal 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.

Telcel is the target of two substantial market power investigations initiated by Cofeco. In the first investigation, Cofeco determined that Telcel had substantial market power over the mobile termination
switched services it provides to other concessionaries through its network. Telcel filed an appeal for relief (recurso de



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amparo) against such ruling. The second investigation relates to whether Telcel enjoys substantial market power in the nationwide market for voice and data services. In March 2013, Telcel
was notified of a final ruling issued by Cofeco confirming that Telcel does indeed enjoy substantial market power in the nationwide market for mobile telephone services. Telcel filed an appeal for relief (recurso de amparo) against the March
2013 ruling. Resolution of both appeals for relief (recurso de amparo) is pending.

These rulings allow Cofetel to
impose against Telcel specific requirements as to rates, quality of service and information, though it has not yet done so. If they do, we will appeal Cofecos rulings and any specific requirements Cofetel imposes.

Telcel Antitrust LitigationsMonopolistic Practices

In April 2011, following a regulatory inquiry initiated in 2006, Cofeco notified our subsidiary Telcel of a resolution imposing a fine of Ps.11,989 million for alleged relative monopolistic
practices (prácticas monopólicas relativas) that also, allegedly, constituted a repeat offense (reincidencia). Under applicable Mexican law, Cofeco can impose a penalty for a repeat offense equivalent to the highest
of twice the fine applicable to a first-time offense, or 8% of the offenders annual revenues for its previous fiscal year.

In March 2012, Telcel submitted to Cofeco, pursuant to the Mexican Competition Law (Ley Federal de Competencia Económica), a series of proposed undertakings related to the alleged relative
monopolistic pricing practice to which the fine relates in order for Cofeco to consider the adoption of such undertakings as part of the petition for reconsideration in order to eliminate the fine. The undertakings are: (i) the gradual
reduction of the mobile termination rate Telcel charges for termination of voice traffic in its network to reach Ps.$0.3094 in 2014; (ii) use of the second as the applicable unit for measuring interconnection rates; (iii) publication of
the reference interconnection terms (oferta pública de interconexión) applicable to its network; (iv) termination of all pending disputes related to the 2011 termination rate (Ps$0.3912) determined by Cofetel with those
operators that agree to enter into an agreement based on the reference interconnection terms; (v) maintenance, as part of Telcels commercial offerings, of plans or promotions under which some of the minutes included in the plan or
promotion can be used by the Telcel customer to call any fixed or mobile network at the same rate (without differentiating on-net and off-net); and (vi) an access to information agreement under which Cofeco can monitor compliance with
Telcels undertakings.

In May 2012, Cofeco revoked the fine. As a condition to the revocation of the fine, Telcel must
comply with all specific undertakings that it proposed to Cofeco in March 2012. Certain of the operators that were parties to that proceeding have challenged the revocation of the fine. See Legal Proceedings under Item 8 and Note 17
to our audited consolidated financial statements included in this annual report.

Telmex Antitrust
InvestigationsSubstantial Market Power

Beginning in 2007, Cofeco initiated four investigations to evaluate if Telmex
and its subsidiary Telnor have substantial power in certain markets. Cofeco has issued final resolutions concluding that Telmex and Telnor have substantial power in all four of the relevant markets investigated. Telmex and Telnor submitted petitions
for reconsideration (recursos de reconsideración) to Cofeco challenging their findings. Cofeco denied the petitions for reconsideration. Telmex and Telnor then filed appeals for relief (amparo indirecto) challenging
Cofecos denial of the petitions for reconsideration. Of these appeals, two are still pending, but two of Telnors appeals for relief have been denied, effectively upholding Cofecos findings. With respect to the matters for which the
appeals were denied, Cofetel can impose specific tariff requirements or other special regulations, such as additional requirements regarding disclosure of information or quality of service. Consequently, in April 2012, Cofetel published, in the
Official Gazette, an agreement establishing requirements regarding tariffs, quality of service, and information for dedicated-link leasing. Telmex believes it could have an adverse impact on its revenues and results of operations. Telmex and Telnor
have filed a petition for relief against that resolution, and that petition is still pending.



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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 or mobile termination rate. Under Mexican law, interconnection fees are negotiated between operators. There has been extensive controversy in Mexico
concerning the mobile termination rates payable to mobile operators since 2005. See Note 17 to our audited consolidated financial statements included in this annual report.

February 2009 Interconnection and Interoperability 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 and establishes additional obligations on telephone
services providers, including Telcel, Telmex and Telnor. 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 service providers. Telcel believes that the implementation of the Plan will result in asymmetrical and discriminatory treatment for those service providers that Cofetel has determined are dominant.
And that it will also subject these service providers to specific technical and legal requirements and different economic, technical and legal conditions than the other service providers, such as the disaggregation of network components.
Accordingly, Telcel, Telmex and Telnor have challenged the Plan. Telcel, Telmex and Telnors challenges are pending as of the date of this annual report. We are unable to predict the competitive and financial effects that might result if those
challenges are resolved against us and the Plan is implemented, though they could materially reduce our revenues in future periods.

Consolidation of Local-service Areas

In 2005, Cofetel issued guidelines
regarding the consolidation of local-service areas. Following a legal challenge by Telmex, the guidelines were withdrawn in June 2012. In April 2013, Cofetel presented new draft guidelines for public consultation. If these guidelines become final,
the number of local-service areas would decrease significantly, resulting in a reduction in our revenues from long-distance calls. Additionally, we would have to invest in adapting our technology to the changes in fixed-number dialing that the
guidelines contemplate.

Brazil

Legislation and Main Regulatory Authorities

The Brazilian
Telecommunications Law (Lei Geral das Telecomunicações Brasileiras) provides a framework for telecommunications regulation. The primary telecommunications regulator in Brazil is Anatel, which has the authority to grant
concessions and licenses for all telecommunications services, except broadcasting, and to propose and issue regulations that are legally binding on telecommunications services providers.

The principal tax imposed on telecommunications services is a state level value added tax (Imposto Sobre Ciculação de
Mercodorias e Serviços), which Brazilian states impose on gross revenue derived from telecommunications services and which while varying from state to state, average 26% nationwide.

Rates

Anatel regulates rates for telecommunications services. In general, PCS license-holders are authorized to increase basic plan rates only annually and to adjust for inflation (less a factor determined by
Anatel based on the productivity of each operator during the year). Embratels concession for both domestic and international long-distance services allows it to set its own rates freely as in accordance with an annual rate-adjustment mechanism
established by Anatel. In December 2012, Embratel obtained Anatels approval to set international long distance rates freely as it deems appropriate, provided it gives Anatel and the public advance notice. Data transmission rates are not
regulated.



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General Regulatory Plan

The General Regulatory Plan (Plano Geral de Atualização da Regulamentação, or PGR), issued
in October 2008, serves as a framework to develop public telecommunications policies for a period of ten years. The PGR includes Anatels plans to regulate MVNOs practices, expand broadband services to rural and low-income areas and implement
rules related to fixed-line incumbents infrastructure usage within the next two years and revise the rules related to the size of the areas where the service is considered to be local.

Under the PGR, during 2012 Anatel auctioned 4G spectrum frequencies with coverage obligations that aim to expand broadband access to
rural and low-income areas. In this auction, Claro was awarded one of the two available nationwide licenses with a higher capacity (20+20 MHz in the 2.5 GHz band) that will allow it to provide faster data speeds. In additional to the national
spectrum block, Claro also acquired 19 regional complementary blocks (10+10 MHz).

New Pay TV Legal Framework

In September 2011, the Brazilian Congress approved a new legal framework applicable to all Pay TV operators in Brazil.
The new framework, among other things: allows new entrants into the Pay TV market, including telephone companies; permits existing Pay TV operators to migrate to the new regulatory regime even in cases where their current license contracts are still
in full force and effect; establishes that no license renewal requests, transfer of control requests, or changes in corporate structure requests will be granted, unless existing Pay TV operators convert their old licenses to new licenses governed by
the new legal framework; establishes Brazilian content quotas; and requires operators to provide free access to certain local and municipal channels. Anatel issued the main regulations regarding the new legal framework in March 2012. All licenses
have national coverage and operators are not permitted to have multiple Pay TV licenses.

Concessions

Our Brazilian wireless subsidiaries hold licenses to provide services under the PCS regime in the 450 MHz, 850 Mhz,
900 MHz, 1,800 MHz, 1,900 MHz, 2,100 MHz and 2,500 MHz spectrum bands. Our subsidiaries expect to continue to acquire spectrum as Anatel conducts additional auctions.



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



|                         |  |                   |  |             |  |               |  |               |  |                |  |             
|------------------------ |  | ----------------- |  | ----------- |  | ------------- |  | ------------- |  | -------------- |  | ------------
|Regions in Brazil        |  | Termination Dates
|                         |  | 450 MHz*          |  | 850 MHz     |  | 900 MHz       |  | 1.8 GHz       |  | 1.9 and 2.1GHz |  | 2.5 GHz**   
|National (all states)    |  |                  |  |            |  |              |  |              |  |                |  | October 2027
|Bahia                    |  | October 2024      |  |            |  | December 2017 |  | December 2017 |  | April 2023     |  |            
|Sergipe                  |  |                  |  |            |  | December 2017 |  | December 2017 |  | April 2023     |  |            
|Alagoas                  |  |                  |  | August 2027 |  | August 2027   |  | August 2027   |  | April 2023     |  |            
|Ceara                    |  |                  |  | August 2027 |  | August 2027   |  | August 2027   |  | April 2023     |  |            
|Piaui                    |  |                  |  | August 2027 |  | August 2027   |  | August 2027   |  | April 2023     |  |            
|Pernambuco               |  |                  |  | August 2027 |  | August 2027   |  | August 2027   |  | April 2023     |  |            
|Rio Grande do Norte      |  |                  |  | August 2027 |  | August 2027   |  | August 2027   |  | 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 2028  |  | April 2028    |  | April 2028    |  | April 2023     |  |            
|Espirito Santo           |  |                  |  | April 2028  |  | April 2028    |  | April 2028    |  | April 2023     |  |            
|Rio Grande do Sul        |  |                  |  | April 2028  |  | April 2028    |  | April 2028    |  | April 2023     |  |            
|São Paulo - Capital      |  | October 2024      |  | August 2027 |  | August 2027   |  | July 2027     |  | April 2023     |  |            
|São Paulo - Interior     |  |                  |  | March 2028  |  | March 2028    |  | March 2028    |  | April 2023     |  |            
|Minas Gerais             |  |                  |  |            |  | April 2020    |  | April 2020    |  | April 2023     |  |            
|Minas Gerais (Triângulo) |  |                  |  |            |  |              |  |              |  | April 2023     |  |            
|Amazonas                 |  | October 2024      |  |            |  |              |  | December 2022 |  | April 2023     |  |            
|Maranhão                 |  | October 2024      |  |            |  |              |  | December 2022 |  | April 2023     |  |            
|Roraima                  |  | October 2024      |  |            |  |              |  | December 2022 |  | April 2023     |  |            
|Amapá                    |  | October 2024      |  |            |  |              |  | December 2022 |  | April 2023     |  |            
|Pará                     |  | October 2024      |  |            |  |              |  | December 2022 |  | April 2023     |  |            
|Distrito Federal         |  |                  |  | July 2027   |  | July 2027     |  | July 2027     |  | April 2023     |  |            
|Mato Grosso do Sul       |  |                  |  | July 2027   |  | July 2027     |  | July 2027     |  | April 2023     |  |            
|Goiás                    |  |                  |  | July 2027   |  | July 2027     |  | July 2027     |  | April 2023     |  |            
|Tocantins                |  | October 2024      |  | July 2027   |  | July 2027     |  | July 2027     |  | April 2023     |  |            
|Mato Grosso              |  |                  |  | July 2027   |  | July 2027     |  | July 2027     |  | April 2023     |  |            
|Rondônia                 |  | October 2024      |  | July 2027   |  | July 2027     |  | July 2027     |  | April 2023     |  |            
|Acre                     |  | October 2024      |  | July 2027   |  | July 2027     |  | July 2027     |  | April 2023     |  |            



|* | In 450 MHz São Paulo Capital includes area codes 11 and 12.
|- | -----------------------------------------------------------

|** | In addition to a national block (20+20 MHz) in 2.5 GHz (4G), Claro also acquired 19 regional complementary blocks (10+10 MHz).
|-- | ------------------------------------------------------------------------------------------------------------------------------

Other Licenses

Embratel

Embratel holds both domestic and international long-distance
concessions that were granted on December 22, 2005 and will expire on December 31, 2025. Additionally, Embratel also holds local voice services, data services (Serviço de Comunicação Multimídia, or
SCM) and Pay TV licenses (Serviço de Acesso Condicionado or SeAC), which allow it to provide data, audio and video services for an indefinite term.



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Star One:

Our Brazilian subsidiary Star One has the following authorizations:



|                    |  |                   |  |                                        |  |            |          |  |                           |  |          | 
|------------------- |  | ----------------- |  | -------------------------------------- |  | ---------- | -------- |  | ------------------------- |  | -------- | 
|Type:               |  | Number:           |  | Oribital Position                      |  | IssueDate: |          |  | ExpirationDate:(15
years) | 
|Extension (renewal) |  | PVSS/SPV 007/2006 |  | 63oW, 65oW, 70oW, 84oW e 92oW  C Band |  |            | 01/01/06 |  |                           |  | 01/01/21 | 
|Orbital Position    |  | PVSS/SPV 001/2003 |  | 65o W  Ku Band                        |  |            | 25/02/03 |  |                           |  | 25/02/18 | 
|Orbital Position    |  | PVSS/SPV 12/2007  |  | 68o W  C and Ku Band                  |  |            | 13/11/07 |  |                           |  | 13/11/22 | 
|Orbital Position    |  | PVSS/SPV 002/2003 |  | 70o W  Ku Band                        |  |            | 08/10/03 |  |                           |  | 08/10/18 | 
|Orbital Position    |  | PVSS/SPV 001/2007 |  | 75o W  C and Ku Band                  |  |            | 27/02/07 |  |                           |  | 27/02/22 | 
|Orbital Position    |  | PVSS/SPV 156/2012 |  | 70o W  Ka and Ku (Planned) Band       |  |            | 28/03/12 |  |                           |  | 28/03/27 | 
|Orbital Position    |  | PVSS/SPV 076/2012 |  | 84o W  Ka and Ku Band                 |  |            | 06/02/12 |  |                           |  | 06/02/27 | 

Net Serviços

Net Serviços holds 95 Pay TV (SeAC) licenses, granted by Anatel in November 2012. We expect that Anatel will subsequently unify all 95 licenses into a single license. These licenses impose certain
technical, financial and legal requirements and have no expiration date.

Concession Fees

Claro Brasil is required to pay a biannual fee equal to 2% of net revenue, except in the final year of the 15-year term of its
authorizations, in which the fee equals 1% of net revenue.

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

Wireless Interconnection Fees

Since 2005, mobile termination rates in Brazil are negotiated by operators, subject to the condition that wireless operators offer to all other fixed-line and wireless operators the best rates offered to
any fixed-line operator. Our Brazilian subsidiaries have not always been able to reach agreements on the mobile termination rates with certain operators and some of these operators have sought the intervention of Anatel or the Economic Defense
Department. 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 adverse
resolution of these proceedings could be complex and difficult to predict, but if the rates set as a result of these proceedings are different from the ones Claro Brasil has agreed to with most operators, Claro Brasil may suffer a financial impact.

In 2005, Anatel defined a series of cost-based methods, 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 be considered to have significant market power for this purpose. Under this proposal, Claro Brasil would be an economic
group with significant market power. In November 2012, Anatel published Resolution N. 600, approving the General Plan of Competition (Plano Geral de Metas da Competição or PGMC), establishing that mobile termination
rates must be reduced to 75% of the 2013 rates by 2014, and to 50% of the 2013 rates, by 2015. In 2016, the mobile termination rates will be defined by a cost model to be finalized during 2013. The cost model is expected to be ready during 2013, to
take effect in 2016. When the PGMC is implemented and if Claro Brasil is deemed to be an economic group with significant market power, its revenues and results of operations may be affected.



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Pending implementation of the cost-based methodology, Anatel published a transitory
regulation that imposes a reduction of interconnection fees that will have a negative financial impact on Claro Brasil, although it is unclear what its financial impact will be on Embratel. This regulation came into effect in the first quarter of
2012.

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 fee below the price cap to another
operator, it must offer the same price to any other operator that requests it.

Competition Regulation

The PGMC published by Anatel sets forth competition goals for all main telecommunications services. Their key
objective is to lower prices in the wholesale markets and to ensure equal treatment among competitors. In December 2012, Anatel held public consultations regarding reference prices for such markets and its final decision on the matter is expected to
be released before their enforcement. All wholesale contracts within these regulated markets are to be overseen by a third-party company hired by all main operators.

Quality of Service Regulation

Telecommunications providers are
subject to quality targets under their concessions and the recently issued the Quality of Service Regulation (Regulamento de Gestão da Qualidadeor RGQ). Under this regulation, published in December 2012 and entering into force 120
days after its publication, the current 37 indicators of quality would fall to 21 for operators with more than 50 thousand accesses, thereby promoting the regulatory asymmetry already used in the regulation of broadband quality.

Noncompliance with the targets set by the RGQ and other quality of service regulations may result in the imposition of penalties by
Anatel. As such, in July 2012, Anatel suspended Brazilian mobile phone providers TIM, Claro and Oi from selling new telephone lines in some states throughout the country, due to high rates of customer complaints. In each state, the company with the
highest number of complaints was prohibited from conducting sales. Claro was prohibited from conducting sales in 3 states.

As
a result, operators were requested to present to Anatel an investment plan that tackled issues of customer service and quality. Claros plan is being monitored by Anatel and non-compliance may result in further suspensions or other actions.

In October 2011, Anatel published quality of service regulations for PCS and SCM, which included new quality standards for
broadband services. In addition, it requires that an independent third party designated by all broadband service providersfixed and wirelessreview these new standards. During 2012, operators hired a third-party company whose measurements
should be released in 2013.

Reversible Assets

Embratels concessions provide that the concessionaires assets, such as equipment, infrastructure and any other property or
rights essential for the provision of services and considered as reversible, cannot be disconnected, replaced or sold without prior regulatory approval. Upon expiration of these concessions, such assets may be revert to the Brazilian government in
exchange for some compensation for the investments made in those assets.

Colombia

The Colombian Ministry of Information and Communications (Ministerio de Tecnologías de la Información y las
Comunicaciones, or Ministry of Communications) and the CRC are responsible for regulating and



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overseeing the telecommunications sector, including wireless operations. In addition, the main telecommunications regulatory authority in Colombia with respect to Pay TV is the National
Television Authority (Autoridad Nacional de Televisión, or ANTV). The Ministry of Communications supervises and audits the performance of our fixed voice and mobile concessionaires legal and contractual obligations.
The activities of Comcel and Telmex Colombia 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 2011, the CRC opened an administrative action to impose new regulatory
measures on Comcel because of its dominant position in the outgoing mobile services market. On December 31, 2012, the CRC issued Regulation 4050/2012, which seeks to correct an alleged market failure, imposed the following measures on Comcel:
(i) asymmetric access charges for long-distance and wireless interconnection services, whereby we must offer lower rates to our competitors than the rates we pay them, in turn, for those services; and (ii) restrictions on the rates we
charge our users for calls outside our network (off-net calls), which must not exceed the rates we charge for calls within our network (on-net calls). Asymmetric access charges are expected to end on January 1, 2015, while the restrictions on
off-net rates are expected to be temporary, subject to modification or elimination by the CRC. The competitive and financial effects of these regulatory measures could be complex and, while difficult to predict, they could materially reduce
Comcels revenues in future periods.

In October 2012, the ANTV issued Resolution No. 0179, establishing a unified
licensing system and allowing existing cable operators to apply for a unified license to provide Pay TV services on a neutral technology basis. We have made the required application for this license in order to provide DTH services and our
application is in process.

On March 11, 2013 the Colombian government issued Resolution No. 449, outlining the
bidding process for its fourth-generation radio licenses, which excluded Comcel from bidding for the 1.7 GHz (AWS) spectrum, while allowing it to bid for the for the 1.9 GHz and the 2.5 GHz spectrum. The auction is currently scheduled for
June 26, 2013.

Under the terms of Comcels concessions to provide wireless telecommunications services in Colombia,
it is required to make quarterly royalty payments based on its revenues to the Ministry of Communications. Comcel is currently reviewing with the local authorities the conditions for the renewal of three of its concessions that will expire in March
2014.

In October 2012, a bill restricting any one wireless provider from controlling more than 30% of the wireless market was
introduced in the Colombian Congress. Because the bill is still in committee, we cannot anticipate whether or in what form it will be approved.

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 and is authorized to foreclose and sell the shares of a licensee in case of specified breaches of the terms of a license.



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During 2010, the Communications Ministry issued Resolution 98/2010 setting rules for the
implementation of number portability, which began in March 2012.

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.

On December 2012, Empresa Argentina de Soluciones Satelitales S.A.
(ARSAT), the state-owned operator, was granted the use of certain frequencies of the radio spectrum in the bands of 850MHz and 1900MHz, after the public-bidding process for those frequencies had been cancelled.

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 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 granted in June 1997 and covers a 30-year period. The concession imposes coverage, reporting and service quality requirements. The Chilean Transportation and Communications
Ministry is authorized to foreclose any concessionaire in the event 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 that 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.

One of our subsidiaries has
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. In addition, some subsidiaries in Chile provide domestic and international long-distance service,
data services, internet access, pay television services and value-added services.

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 license to operate in the 1900 MHz frequency spectrum for a five-year term starting on January 26, 2009. AMX Paraguay also holds a nationwide internet access
license, which was granted in December 2007 and is in the renewal process. In November 2010, AMX Paraguay received a license for a five-year term to provide DTH services and in August 2011, AMX Paraguay received a license to provide cable TV
services for a ten-year term. 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 was implemented during the fourth quarter of 2012.

Uruguay

The Regulatory Unit of Communications Services (Unidad Reguladorada de Servicios de Comunicaciónes) and the National
Administration of Telecommunications (Administración Nacional de Telecomunicaciones) are



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in charge of supervising the telecommunications industry in Uruguay. In June 2004, we acquired a 20-year license to operate three broadband PCS frequencies in Uruguay.

In December 2012 the Government called for a public bidding process for the frequencies in the 900MHz, 1900 MHz and 1700/2100 MHz radio
spectrum. As a result of this bidding process, AMX Wireless Uruguay was granted use of 45 MHz of spectrum in the 1,700 MHz, 1,800 Mhz, 1,900 Mhz and 2,100 MHZ bands.

On February 4, 2013, Flimay was notified by the Court of Administrative Disputes (TCA) that its license for the provision of DTH had become effective. Flimay expects to begins providing DTH services
during 2013.

Andean Region

Ecuador

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



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



| |  |  | the National Telecommunications Secretariat (Secretaría Nacional de Telecomunicaciones), which is responsible for executing the National
Telecommunications Councils resolutions and managing and assigning licenses to use the radioelectric spectrum for the provision of telecommunications services;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the Telecommunications Superintendency (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 the leading government agency responsible for the technology industrys development and the promotion of equal access to telecommunications services.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In 2008, Conecel renewed its concessions to operate 25 MHz on the 850MHz radio spectrum and 10 MHz on the 1900 MHz (Sub Band E-E) radio
spectrum. This included a concession for PCS services that expires in August 2023. The renewal of the PCS concession allows us to provide 3G services and contains stricter quality-of-service requirements for, among other things, the number of
successful call completions, average delivery time of SMS services, average time an operator takes to deal with all aspects of a customer call, geographic coverage and service conditions. In 2011, Conecel renewed its license to provide internet
value added services, which expires in 2021. In 2002, Conecel obtained a license to provide carrier services, which expires in 2017.

In 2013, Conecel, through DTH, obtained a license to operate Pay TV services throughout Ecuador except for the Galapagos Islands. The license expires in 2023.

Ecuador Telecom holds a concession to offer wireless and fixed-line voice, public telephony and domestic and international long-distance
carrier services, as well as a license to use the 3.5 GHz frequency band that expires in August 2017 and a Pay TV license that expires in 2018.

Peru

The main telecommunications regulatory authorities in Peru are
the Supervising Agency of Private Investment in Telecommunications (Organismo Supervisor de Inversión Privada en TelecomunicacionesOSIPTEL) and the Ministry of Transportation and Communications (Ministerio de Transportes y
Comunicaciones).



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América Móvil Perú holds nationwide concessions to provide mobile, PCS,
fixed-line, local carrier, domestic and international long-distance, Pay TV services (through DTH and HFC technologies), public telephony and value added services (including internet access) covering all regions in Peru. The concessions were awarded
between May 1999 and June 2008, operating 25 Mhz on the 850 MHz band, 35 Mhz on the 1900 MHz band, 50 Mhz on the 3.5 GHz band, 10 Mhz on the 450 MHz band and 56 Mhz on the 10.5 GHz band.

Each of the concessions was awarded by the Ministry of Transportation and Communications, and covers a 20-year period. The concessions
contain coverage, reporting, service requirements and spectral efficiency goals. The Ministry of Transportation and Communications is authorized to cancel any of the concessions in case of specified breaches of its terms.

Mobile number portability was implemented in January 2010, and during 2010 and 2011, transfer requests from other wireless operators to
América Móvil Perú represented 72.4% of total portability requests. During 2012, transfer requests from other wireless operators to América Móvil Perú represented 69.8% of total portability requests.

Other Jurisdictions

Costa RicaClaro Costa Ricas business is subject to comprehensive regulation and oversight by the Superintendency of Telecommunications (Superintendencia de
Telecomunicaciones or SUTEL) and by the Ministry of Science, Technology and Telecommunications (Ministerio de Ciencia, Tecnología y Telecomunicaciones). Claro holds a concession in the 1800 MHz and 2100 MHz bands to
operate its cellular network. Claro Costa Rica obtained a license in October 2012 to operate Pay TV through DTH and started providing Pay TV services in December 2012.

El SalvadorCTEs business is subject to comprehensive regulation and oversight by the Electricity and Telecommunications Superintendency (Superintendencia General de
Electricidad y Telecomunicaciones or SIGET). CTE holds a concession from the Salvadoran government to operate its nationwide fixed-line network and CTE Telecom Personal holds 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). Telgua holds a license from the Guatemalan government to operate its
nationwide fixed-line network and numerous licenses to operate its cellular network in the 900 MHz and 1900 MHz frequencies nationwide.

NicaraguaEnitels business is subject to comprehensive regulation and oversight by the Nicaraguan Telecommunications and Mailing 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 businesses are subject to comprehensive regulation and oversight by the Honduran National Telecommunications Commission (Comisión Nacional de
Telecomunicaciones) under the Telecommunications Law (Ley Marco del Sector de Telecomunicaciones).

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 to use 30 MHz in the 1900 MHz
band for a 20-year period. Claro Panamá also holds Pay TV, international long-distance, fixed-line voice and added value added services licenses.

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.



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Dominican RepublicThe Dominican Institute of Telecommunications
(Instituto Dominicano de las Telecomunicaciones, or Indotel) is responsible for 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.

Puerto RicoThe FCC and the Telecommunications Regulatory Board of Puerto Rico (TRBPR) oversee and
regulate the telecommunications industry in Puerto Rico. Our Puerto Rican subsidiaries hold concessions to provide telecommunication services, including local exchange and long-distance services in Puerto Rico, long-distance interstate and
international services, roaming services and Pay TV services, that contain coverage, reporting and service requirements. The FCC and the TRBPR have the authority to cancel the concessions, within their competent jurisdiction in the event of
specified breaches of their terms.



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

Introduction

Changes in IFRS

Note 3 to our audited consolidated financial statements discusses new accounting pronouncements under IFRS that were published in 2012.
These accounting pronouncements were not effective as of December 31, 2012 and have not been reflected in the presentation of our financial statements included in this annual report. With the exception of IAS 19, we are still evaluating the
impact that these pronouncements may have on our consolidated financial statements. IAS 19 modifies existing IFRS on the recognition of changes in the defined benefit obligation and plan assets for employee benefits by, among other things,
eliminating the corridor approach related to the recognition of certain actuarial items. The modifications require retrospective application, subject to certain exceptions. Accordingly the initial application of IAS 19 will require us to recognize
unamortized actuarial losses in other comprehensive income. As described in Note 3 to our audited consolidated financial statements, the Company estimates that the retrospective application of IAS 19 will result in a charge to December 31, 2012
equity of Ps.56,943 million, primarily related to unamortized actuarial losses, net of deferred taxes.

Constant
Currency Presentation

Our operations outside Mexico account for a significant portion of our revenues, and currency
variations between the Mexican peso and the currencies of our non-Mexican subsidiaries, especially the Brazilian real, affect our results of operations as reported in Mexican pesos. In the following discussion regarding our operating revenues, we
include a discussion of the change in the different components of our revenues between periods at constant exchange rates, i.e., using the same exchange rate to translate the local-currency results of our international operations for both periods.
We believe that this additional information helps investors better understand the performance of our non-Mexican operations and their contribution to our consolidated results.

Investment in Net Serviços

As of December 31, 2012, we
owned, directly and indirectly through our Brazilian subsidiaries, 88.0% of the total equity, including 82.91% of the voting equity, of Net Serviços, which provides Pay TV services in Brazil. We began consolidating Net Serviços from
January 1, 2012, and, accordingly, the data presented in this annual report consolidate the results of Net Serviços as of and for the year ended December 31, 2012. Prior to January 1, 2012, we accounted for Net Serviços
using the equity method. The consolidation of Net Serviços affects the comparability of our results for 2012 to our results for 2011 and 2010.

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 user. This measure analyzes revenues from wireless data and voice services. We calculate ARPU for a
given period by dividing service revenues for such period on a local-currency basis by the simple average number of wireless subscribers for such period. The figure includes both prepaid and postpaid customers.

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

ChurnThis measure analyzes the rate at which customers disconnect from our services (wireless or fixed). We calculate churn
rate as the total number of customer disconnections for a period divided by total subscribers



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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 a specified period 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 and many other factors.
Accordingly, our results of operations in each period reflect a combination of different effects on 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, affect our results of operations as reported in Mexican pesos.

We also recognize exchange gain
and loss attributable to changes in the value of the Mexican peso, and the operating currencies of our subsidiaries, against the currencies in which our other indebtedness and accounts payable are denominatedprincipally the U.S. dollar.
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.7.4 billion in 2012, net foreign exchange losses of Ps.22.4 billion in 2011 and net foreign exchange gains of Ps.5.6 billion in 2010. Changes in exchange rates also affect the fair value of derivative financial instruments that we use to
manage our currency-risk exposures. We recognized net fair value loses on derivatives of Ps.5.3 billion in 2012, net fair value gains on derivatives of Ps.10.9 billion in 2011 and net fair value losses on derivatives of Ps.9.1 billion in 2010. See
Note 11 to our audited consolidated financial statements.

Effects of Regulation

We operate in a regulated industry. 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 in interconnection rates, and we expect further decreases in Mexico, Brazil, Chile, Peru, Ecuador and Colombia. Lower interconnection
revenues have often been offset by increased traffic resulting from lower effective prices to customers, but this may change. Significant regulatory developments are presented in more detail in Recent Developments and
Regulation under Item 4, and Risk Factors under Item 3.



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Composition of Operating Revenues

During 2012 our total operating revenues consisted of: mobile voice revenues (37.0% of total operating revenue), fixed voice revenues
(16.0% of total operating revenue), mobile data revenues (17.6% of total operating revenue), fixed data revenues (10.8% of total operating revenue), Pay TV revenues (7.3% of total operating revenue) and other services (11.3% of total operating
revenue). Other services include revenues from selling handsets and other equipment, as well as other miscellaneous revenue.

Voice revenues primarily include 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 primarily include 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.

Other services include sales revenues from selling handsets and other equipment and
revenues from other businesses, such as yellow pages, call-center services and publishing. 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 towards 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 they 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 is subject to a certain
degree of seasonality, characterized by a higher number of new customers during the fourth quarter of each year. We believe this seasonality is mainly driven by the Christmas shopping season. Revenue also tends to decrease during the months of
August and September, when family expenses shift towards school supplies and child care.

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 2012 were Pay TV services in Brazil and Colombia and increased use of mobile data services, especially in Brazil, Mexico, the United States and Colombia. The main drivers of increased revenues in 2011 were
Pay TV services and increased use of mobile voice and data services, especially in our Brazil, Southern Cone and Andean Region segments. This has been partly offset by 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 increased cost of
content for our Pay TV and wireless data services, physical and telephone customer-service centers and energy, as well as the growing size and complexity of our networks. Our operating margin depends on the balance between subscriber growth,
increasing usage, pricing and higher costs.



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Consolidated Results of Operations for 2012 and 2011

Operating Revenues

Operating revenues increased by 12.3% in 2012. At constant exchange rates and excluding the effects of the consolidation of Net Serviços, total operating revenues for 2012 increased by 6.3% over
2011. The Ps.85.1 billion total increase in operating revenues in 2012 was primarily attributable to increases in revenues from our Pay TV, wireless voice, and wireless and fixed data services, slightly offset by a decrease in revenues from our
fixed-line voice operations.

Mobile VoiceMobile voice revenues increased by 1.8% in
2012. At constant exchange rates, mobile voice revenues for 2012 increased by 1.1% over 2011. The Ps.5.2 billion total increase in mobile voice revenues in 2012 was principally due to an increase in traffic and the introduction of plans with more
monthly airtime, partially offset by reductions in interconnection rates charged to other telecommunications providers and reductions in rates charged to customers, principally in Mexico and Brazil.

Fixed VoiceFixed voice revenues decreased by 11.1% in 2012. At constant exchange rates and excluding the effects of the
consolidation of Net Serviços, total fixed voice revenues for 2012 decreased by 8.1% over 2011. The total decrease of Ps.15.4 billion in fixed voice revenues in 2012 was principally due to a decrease in long-distance traffic and lower
interconnection rates, principally in Mexico and Brazil.

Mobile DataMobile data revenues increased
by 33.5% in 2012. At constant exchange rates, mobile data revenues for 2012 increased by 32.9% from 2011. The total increase of Ps.34.2 billion in mobile data revenues in 2012 was principally due to increased use of services such as SMS messaging,
web browsing and machine-to-machine services as well as content downloading on handsets, tablets and notebooks.

Fixed DataFixed data revenues increased by 16.1% in 2012. At constant exchange rates and excluding the effects
of the consolidation of Net Serviços, fixed data revenues for 2012 increased by 4.7% over 2011. The total increase of Ps.11.6 billion in fixed data revenues in 2012 was principally due to residential subscriber and broadband services growth,
including growth of corporate data services.

Pay TVPay TV revenues more than tripled in 2012 primarily
because of the consolidation of Net Serviços. At constant exchange rates and excluding the effects of the consolidation of Net Serviços, total pay TV revenues for 2012 increased by 37.2%, or Ps.39.6 billion, over 2011, principally due
to an increase in the use of our services as a result of the introduction of new plans, particularly in Brazil, and subscriber growth in our operations in Brazil, Colombia, Peru, the Dominican Republic and Ecuador.

Other ServicesRevenues from other services increased by 12.8% in 2012. At constant exchange
rates and excluding the effects of the consolidation of Net Serviços, revenues from other services for 2012 increased by 13.1% over 2011. The total increase of Ps.10.0 billion in revenues from other services in 2012 primarily reflects the
increase in number of handsets, accessories and computers sold as a result of the acquisition of new customers.

Operating Costs and Expenses

Cost of sales and servicesCost of sales and services increased by 18.1% in 2012, representing 44.3% of operating revenues in 2012, compared to 42.2% of operating revenues in
2011. At constant exchange rates andexcluding the effects resulting from the consolidation of Net Serviços, cost of sales and services increased by 11.5% over 2011.

Cost of sales was Ps.110.5 billion in 2012 and Ps.95.1 billion in 2011 and primarily represents the cost of handsets, accessories
and computers sold to customers. Costs of handsets, accessories and computers increased by 16.2% in 2012. This increase was greater than the 12.8% increase in revenue from other services, and primarily reflects the effect of new plans offered to
customers that include more expensive equipment, such as smartphones, which requires larger subsidies.



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Cost of services was Ps.233.0 billion in 2012 and Ps.195.8 billion in 2011. The 19.0%
increase in 2012 was greater than the growth in service revenues, which increased by 12.4%. This increase was principally due to the consolidation of Net Serviços commencing in January 2012, increased content charges as a result of the growth
in our Pay TV business, increased costs to support the growth in our mobile data business and higher royalty payments, as well as higher network maintenance and expansion, real estate leasing, electricity and labor costs. At constant exchange rates
and excluding the effects of the consolidation of Net Serviços, cost of services for 2012 increased by 9.8% over 2011.

Commercial, administrative and generalCommercial, administrative and general expenses increased by 13.6% in 2012,
representing 21.6% of operating revenues in 2012 and 21.3% in 2011. At constant exchange rates and excluding the effects resulting from the consolidation of Net Serviços, commercial, administrative and general expenses for 2012 increased by
5.6% over 2011. The increase in commercial, administrative and general expenses in 2012 principally reflects higher advertising and labor costs; subscriber acquisition costs in the wireless and Pay TV businesses, including those related to
advertising campaigns in Brazil, Mexico and Colombia; higher customer-service costs related to increases in the number of physical and telephone customer-service centers to permit us to provide better customer care and quality of service and
increased seasonal promotions; and telemarketing costs, such as temporary hiring of employees and production of marketing materials, which received less supplier support than in the prior year.

Telcel and Telmex, like other Mexican companies, are required by law to pay their employees, in addition to their agreed compensation and
benefits, profit sharing in an aggregate amount equal to 10.0% of each entitys taxable income. Our subsidiaries in Ecuador and Peru are also required to pay employee profit sharing at a rate of 15% and 10.0%, respectively, of taxable income.
We account for these amounts under commercial, administrative and general expenses.

Depreciation and
amortizationDepreciation and amortization increased by 10.2% (or Ps.9.6 billion) in 2012. At constant exchange rates and excluding the effects resulting from the consolidation of Net Serviços, depreciation and amortization
for 2012 increased by 6.6% over 2011. As a percentage of revenues, depreciation and amortization decreased from 13.6% in 2011 to 13.4% in 2012.

Operating Income

Operating income increased by 1.6% in 2012,
principally reflecting the consolidation of Net Serviços. Operating margin (operating income as a percentage of operating revenues) was 20.3% in 2012 and 22.4% in 2011. The decrease in our operating margin in 2012 is due principally to higher
costs for subscriber acquisition, network maintenance and customer service, as well as to the growth of lower margin businesses such as Pay TV and TracFone.

Non-Operating Items

Interest incomeInterest income
decreased by 15.7% in 2012. The total decrease of Ps.1.1 billion in interest income is principally due to lower cash balances, as a result of the use of cash to purchase minority interests in subsidiaries and investments in associates.

Interest expenseInterest expense increased by 19.8% in 2012. The total increase of Ps.4.1 billion in interest expense is
principally due to a higher average level of indebtedness.

Foreign exchange gain (loss), netForeign exchange
gain (loss), net represented a gain of Ps.7.4 billion in 2012, compared to a loss of Ps.22.4 billion in 2011. The net foreign exchange gain was primarily attributable to the appreciation at year-end of approximately 7.0% of the Mexican peso against
the U.S. dollar, which is the currency in which the majority of our indebtedness is denominated.



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Valuation of derivatives and other financial items, netThe net change in
valuation of derivatives and other financial items represented a loss of Ps.7.8 billion in 2012, compared to a gain of Ps.8.2 billion in 2011. The loss is principally due to the effects of exchange rate movements on derivative financial instruments
we use to hedge our exchange rate exposure and, in particular, to the appreciation of the Mexican peso against the U.S. dollar in 2012.

Equity interest in net income of associated companiesOur proportionate share of the net income of associated companies accounted for under the equity method was of Ps.0.8 billion in 2012 and
Ps.1.9 billion in 2011. Our results from equity method investees for 2012 primarily reflect our interests in KPN and Telekom Austria, which we acquired in 2012. Our results from equity method investees in 2011 primarily reflect our interest in Net
Serviços, which became a consolidated subsidiary in 2012.

Income TaxOur effective rates of provisions for
corporate income tax as a percentage of pretax income were 33.5% in 2012 and 31.4% in 2011. Our effective tax rate differs from the Mexican statutory rate of 30%, principally because (a) in Mexico, for tax purposes we recognize a taxable gain
attributable to the effects of inflation on our financial liabilities and (b) our operations outside Mexico are taxed separately in each jurisdiction, at varying rates. The increase in the effective tax rate in 2012 was due to a higher level of
taxable inflationary effects and to a higher share of taxable income at certain non-Mexican subsidiaries. See note 20 to our consolidated financial statements.

Net Income

We had net income of Ps.92.1 billion in 2012 and
Ps.88.1 billion in 2011. The increase in net income in 2012 reflects principally lower financing costs as a result of foreign exchange gains.

Consolidated Results of Operations for 2011 and 2010

Operating
Revenues

Operating revenues increased by 9.5% in 2011. At constant exchange rates, operating revenues for 2011
increased by 9.2% over 2010. The Ps.60.1 billion total increase in operating revenues was primarily attributable to increases in revenues from our Pay TV and wireless voice and data services, slightly offset by a decrease in revenues from our
fixed-line voice operations. Without taking into account other services and discounts, our operating revenues increased by 8.8% in 2011.

Mobile voiceMobile voice revenues increased by 5.2% in 2011. At constant exchange rates, mobile voice revenues for 2011 increased by 5.2% over 2010. The Ps.13.9
billion total increase was principally due to an increase in traffic, which resulted in increased airtime and monthly charges.

Fixed voiceFixed voice revenues decreased by 0.7% in 2011. At constant exchange rates, fixed voice revenues for 2011 decreased by 1.7% over 2010. The decrease of Ps.1.0 billion in fixed voice
revenues was principally due to decreases in the price of our services and long-distance traffic, as well as to lower interconnection rates.

Mobile dataMobile data revenues increased by 32.8% in 2011. At constant exchange rates, mobile data revenues for 2011 increased by 33.3% over 2010. The total increase of Ps.25.2 billion in
mobile data revenues was principally due to increased use of value-added services, including SMS messaging and web browsing.

Fixed dataFixed data revenues increased by 9.1% in 2011. At constant exchange rates, fixed data revenues for
2011 increased by 8.1% over 2010. The total increase of Ps.6.0 billion in fixed data revenues was principally due to residential and corporate subscriber growth.



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Pay TVPay TV revenues increased by 78.8% in 2011. At constant
exchange rates, Pay TV revenues for 2011 increased by 74.0% over 2010. The total increase of Ps.7.5 billion in Pay TV revenues was principally due to subscriber growth in our Brazilian operations and, to a lesser extent, in our Central America and
Caribbean segments.

Other Services and DiscountsRevenues from other services
and discounts increased by 12.2% in 2011. At constant exchange rates, other services and discounts revenues for 2011 increased by 20.7% over 2010. The total increase of Ps.8.4 billion in other services and discounts primarily reflects sales of
handsets, accessories and computers.

Operating Costs and Expenses

Cost of sales and servicesIn absolute terms, cost of sales and services increased by 14.8% in 2011, representing 42.2% of
operating revenues in 2011, compared to 40.2% of operating revenues in 2010. At constant exchange rates, cost of sales and services increased by 14.1% over 2010.

Cost of sales was Ps.95.1 billion in 2011 and Ps.85.5 billion in 2010 and primarily represents the cost of handsets, accessories and computers sold to customers. Costs of handsets, accessories and
computers increased by 11.1% in 2011.

Cost of services was Ps.195.8 billion in 2011 and Ps.167.9 billion in 2010. The 16.6%
increase in 2011 was greater than the growth in service revenues, which increased by 13.8%. Cost of services increased faster than service revenues primarily due to increased costs of acquiring content, such as game, applications and music for our
mobile services and programming for our Pay TV services; increased costs of purchasing capacity from other providers for our U.S. operations; higher indirect taxes, primarily in Brazil, Colombia and Ecuador; and increased costs related to the
installation of equipment for Ciudad Segura, a video surveillance program offered by Telmex to the government of Mexico City.

Commercial, administrative and generalCommercial, administrative and general expenses represented 21.3% of operating revenues in 2011 and 20.5% of operating revenues in 2010. On an absolute
basis, commercial administrative and general expenses increased by 13.7% in 2011. At constant exchange rates, commercial, administrative and general expenses increased by 11.5% over 2010. The increase in commercial, administrative and general
expenses in 2011 principally reflects higher subscriber acquisition costs in the wireless and Pay TV businesses, including those related to advertising campaigns in Brazil, Mexico and Colombia; higher customer-service costs related to increases in
the number of physical and telephone customer-service centers to permit us to provide better customer care and quality of service and increased seasonal promotions; and telemarketing costs, such as temporary hiring of employees and production of
marketing materials, which benefitted from less supplier support than in the prior year.

Depreciation and
amortizationDepreciation and amortization increased by 3.2% (or Ps.2.9 billion) in 2011. At constant exchange rates, depreciation and amortization increased by 1.9% over 2010. As a percentage of revenues, depreciation and amortization
decreased from 14.5% in 2010 to 13.6% in 2011. The decrease in depreciation and amortization in 2011 principally reflects the shortening of the useful lives of certain equipment in Colombia and certain write-offs in Guatemala related to our CDMA
network there in 2010.

Non-Operating Items

Operating IncomeOperating income increased by 1.6% in 2011, reflecting the increase in our operating revenues. Operating
margin (operating income as a percentage of operating revenues) was 22.4% in 2011 and 24.2% in 2010. The decrease in our operating margin in 2011 is due principally to higher subscriber acquisition, network maintenance and customer-service costs.



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Interest incomeInterest income increased by 42.7% in 2011. The total increase
of Ps.2.1 billion in interest income is principally due to higher cash balances.

Interest expenseInterest
expense increased by 20.3% in 2011. The total increase of Ps.3.5 billion in interest expense is principally due to a higher average level of indebtedness.

Foreign exchange gain (loss), netForeign exchange gain (loss), net represented a loss of Ps.22.4 billion in 2011, compared to a gain of Ps.5.6 billion in 2010. The net foreign exchange loss
was primarily attributable to the depreciation over the course of the year of approximately 13% of the Mexican peso against the U.S. dollar, which is the currency in which the majority of our indebtedness is denominated.

Valuation of derivatives and other financial items, netThe net change in valuation of derivatives and other financial items,
represented a gain of Ps.8.2 billion in 2011, compared to a loss of Ps.12.0 billion in 2010. The gain is principally due to the effects of exchange rate movements on derivative financial instruments we use to hedge our exchange rate exposure and, in
particular, to the depreciation of the Mexican peso against the U.S. dollar in 2011.

Equity interest in net income of
associated companiesOur proportionate share of the net income of associates accounted for under the equity method was of Ps.1.9 billion in 2011 and Ps.1.7 billion in 2010. The income in 2011 and 2010 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 31.4% in 2011 and 26.8% in 2010. The effective rate is higher in 2011 primarily because in 2010 we recognized a high amount of deferred tax benefits arising from tax losses in Brazil following a change in the
estimate of their future realization. The statutory rate of Mexican corporate income tax was 30% in 2011 and 2010.

Net
Income

We had net income of Ps.88.1 billion in 2011 and Ps.98.9 billion in 2010. The decrease in net income in
2011 reflects principally higher financing costs as a result of foreign exchange movements and higher interest expense as a result of increased indebtedness.

Segment Results of Operations

We discuss below the operating results of
each operating segment. Note 21 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 the currencies in which our
subsidiaries do business affect our reported results in Mexican pesos and the comparability of reported results between periods.

The following table sets forth the exchange rates 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 for the periods indicated. 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 foreign currency
unit(average for the period) |        
|               |  | 2010                                                            |         |  | % Change |  |      | 2011 |  |  | % Change |  |  | 2012 |     
|Brazilian real |  |                                                                 | 7.1828  |  |          |  | 3.2  |      |  |  | 7.4135   |  |  |      | (8.8 | ) |  |  | 6.7605  | 
|Colombian peso |  |                                                                 | 0.0067  |  |          |  | 0.0  |      |  |  | 0.0067   |  |  |      | 8.3  |   |  |  | 0.0073  | 
|Argentine peso |  |                                                                 | 3.2309  |  |          |  | (7.0 | )    |  |  | 3.0055   |  |  |      | (2.5 | ) |  |  | 2.9305  | 
|U.S. dollar    |  |                                                                 | 12.6371 |  |          |  | (1.7 | )    |  |  | 12.4210  |  |  |      | 6.0  |   |  |  | 13.1663 | 



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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, 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. 165,296 |   |                                     |  | 26.2  | %                             |  |  | Ps. 76,090                        |   |  |  | 50.0  | %
|Mexico Fixed    |  |                               | 114,994     |   |                                     |  | 18.3  |                               |  |  | 27,992                            |   |  |  | 18.4  |  
|Brazil          |  |                               | 159,482     |   |                                     |  | 25.3  |                               |  |  | 13,843                            |   |  |  | 9.1   |  
|Colombia        |  |                               | 50,824      |   |                                     |  | 8.1   |                               |  |  | 13,487                            |   |  |  | 8.9   |  
|Southern Cone   |  |                               | 46,953      |   |                                     |  | 7.5   |                               |  |  | 7,531                             |   |  |  | 4.9   |  
|Andean Region   |  |                               | 30,701      |   |                                     |  | 4.9   |                               |  |  | 9,077                             |   |  |  | 6.0   |  
|Central America |  |                               | 17,869      |   |                                     |  | 2.8   |                               |  |  | (194                              | ) |  |  | (0.1  | )
|United States   |  |                               | 35,694      |   |                                     |  | 5.7   |                               |  |  | 1,617                             |   |  |  | 1.1   |  
|Caribbean       |  |                               | 27,742      |   |                                     |  | 4.4   |                               |  |  | 3,304                             |   |  |  | 2.2   |  
|Eliminations    |  |                               | (19,666     | ) |                                     |  | (3.1  | )                             |  |  | (426                              | ) |  |  | (0.3  | )
|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|Total           |  |                               | Ps. 629,889 |   |                                     |  | 100.0 | %                             |  |  | Ps. 152,321                       |   |  |  | 100.0 | %
|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  



|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|--------------- |  | ----------------------------- | ----------- | - | ----------------------------------- |  | ----- | ----------------------------- |  |  | --------------------------------- | - |  |  | ----- | -
|                |  | Year ended December 31, 2011  |            
|                |  | 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. 169,118 |   |                                     |  | 24.5  | %                             |  |  | Ps. 76,004                        |   |  |  | 49.1  | %
|Mexico Fixed    |  |                               | 112,255     |   |                                     |  | 16.3  |                               |  |  | 26,582                            |   |  |  | 17.2  |  
|Brazil          |  |                               | 177,697     |   |                                     |  | 25.8  |                               |  |  | 9,451                             |   |  |  | 6.1   |  
|Colombia        |  |                               | 61,087      |   |                                     |  | 8.9   |                               |  |  | 19,451                            |   |  |  | 12.6  |  
|Southern Cone   |  |                               | 54,839      |   |                                     |  | 7.9   |                               |  |  | 8,608                             |   |  |  | 5.6   |  
|Andean Region   |  |                               | 35,394      |   |                                     |  | 5.1   |                               |  |  | 11,201                            |   |  |  | 7.2   |  
|Central America |  |                               | 19,565      |   |                                     |  | 2.8   |                               |  |  | (57                               | ) |  |  | (0.0  | )
|United States   |  |                               | 47,554      |   |                                     |  | 6.9   |                               |  |  | 817                               |   |  |  | 0.5   |  
|Caribbean       |  |                               | 27,072      |   |                                     |  | 3.9   |                               |  |  | 2,556                             |   |  |  | 1.7   |  
|Eliminations    |  |                               | (14,615     | ) |                                     |  | (2.1  | )                             |  |  | 162                               |   |  |  | 0.1   |  
|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|Total           |  |                               | Ps. 689,966 |   |                                     |  | 100.0 | %                             |  |  | Ps. 154,775                       |   |  |  | 100.0 | %
|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  



|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|--------------- |  | ----------------------------- | ----------- | - | ----------------------------------- |  | ----- | ----------------------------- |  |  | --------------------------------- | - |  |  | ----- | -
|                |  | Year ended December 31, 2012  |            
|                |  | 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. 183,216 |   |                                     |  | 23.6  | %                             |  |  | Ps. 82,101                        |   |  |  | 52.2  | %
|Mexico Fixed    |  |                               | 106,025     |   |                                     |  | 13.7  |                               |  |  | 18,754                            |   |  |  | 11.9  |  
|Brazil          |  |                               | 209,787     |   |                                     |  | 27.1  |                               |  |  | 11,526                            |   |  |  | 7.3   |  
|Colombia        |  |                               | 73,432      |   |                                     |  | 9.5   |                               |  |  | 22,710                            |   |  |  | 14.4  |  
|Southern Cone   |  |                               | 62,018      |   |                                     |  | 8.0   |                               |  |  | 8,071                             |   |  |  | 5.1   |  
|Andean Region   |  |                               | 42,495      |   |                                     |  | 5.5   |                               |  |  | 13,177                            |   |  |  | 8.4   |  
|Central America |  |                               | 23,047      |   |                                     |  | 3.0   |                               |  |  | (3,497                            | ) |  |  | (2.2  | )
|United States   |  |                               | 63,573      |   |                                     |  | 8.2   |                               |  |  | 1,688                             |   |  |  | 1.1   |  
|Caribbean       |  |                               | 27,441      |   |                                     |  | 3.5   |                               |  |  | 2,310                             |   |  |  | 1.5   |  
|Eliminations    |  |                               | (15,964     | ) |                                     |  | (2.1  | )                             |  |  | 470                               |   |  |  | 0.3   |  
|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  
|Total           |  |                               | Ps. 775,070 |   |                                     |  | 100.0 | %                             |  |  | Ps. 157,310                       |   |  |  | 100.0 | %
|                |  |                               |             |   |                                     |  |       |                               |  |  |                                   |   |  |  |       |  



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Interperiod Segment Comparisons

The following discussion addresses the financial performance of each of our operating segments, first by comparing results for 2012 and
2011, and then by comparing results for 2011 and 2010. In the period-to-period comparisons for each segment, we include percentage changes in operating revenues, percentage changes in operating income and operating margin (operating income as a
percentage of operating revenues), in each case calculated based on the segment financial information presented in Note 21 to our audited financial statements, which is prepared in accordance with IFRS. We also include percentage changes in adjusted
segment operating revenues, percentage changes in adjusted segment operating income, and adjusted operating margin (adjusted operating income as a percentage of adjusted operating revenues). The adjustments eliminate (a) certain intersegment
transactions, (b) effects of exchange rate changes, and (c) revenues and costs of group corporate activities and other businesses that are allocated to the Mexico Wireless segment.

2012 Compared to 2011

The different geographical segments include all income, cost and expense eliminations that occurred between subsidiaries within the same geographical segment or region. The Mexico Wireless segment also
includes corporate income, costs and expenses.

Mexico Wireless

Segment operating revenues increased by 8.3% in 2012. Adjusted revenues increased 8.4% in 2012. This increase was primarily driven by an
increase in data revenues. Wireless voice revenues decreased by 2.0% in 2012, reflecting primarily larger discounts and promotions for prepaid customers. Wireless data revenues increased by 30.4% in 2012, principally due to increased demand for
these services.

In 2012, the number of prepaid wireless subscribers increased by 6.1%, and the number of postpaid wireless
subscribers increased by 15.4%, resulting in an increase in the total number of wireless subscribers in Mexico of 7.1% to approximately 70.4 million as of December 31, 2012, which represented a net addition of 4.7 million wireless
subscribers.

Average MOUs per subscriber increased by 18.8% in 2012. ARPU increased by 6.0% in 2012. During 2012, we lowered
the price of some of our services in Mexico through new commercial plans and promotions, which contributed to the increase in subscribers (primarily prepaid subscribers), MOUs and ARPU. Reductions in interconnection tariffs and a decline in
long-distance traffic resulted in lower interconnection revenues in 2012. The wireless churn rate for our Mexican Wireless operations remained at 3.7% during 2012, the same rate as in 2011.

Segment operating income increased by 8.0% in 2012. Adjusted operating income increased by 5.2% in 2012. Segment operating margin
(operating income as a percentage of operating revenues) was 44.8% in 2012 and 44.9% in 2011. Adjusted operating margin for this segment was 46.3% in 2012 and 47.7% in 2011. The decrease in operating margin in 2012 is due principally to higher
equipment costs (larger subsidies), network maintenance, value added services costs (payments to content providers), leases and spectrum fees.

Mexico Fixed

Segment operating revenues decreased by 5.5% in 2012. This
decrease is principally due to decreases in voice revenues, partially offset by an increase in data revenues. Fixed voice revenues decreased by 9.3% in 2012, reflecting significant reductions in local and long-distance traffic mainly as a result of
new promotions on calls to wireless devices. Revenues from broadband and corporate network services decreased by 2.2% in 2012, principally due to the loss of corporate and residential subscribers, and special promotions offered to our subscribers.



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In 2012, the number of fixed voice RGUs in Mexico decreased by 4.0%, and the number of
broadband RGUs in Mexico increased by 6.2%, resulting in a decrease in total RGUs in Mexico of 0.4% to approximately 22.7 million as of December 31, 2012. In 2012, long-distance minutes increased by 21.4% and interconnection minutes
increased by 1.4%, resulting in an increase in total minutes in Mexico of 9.8%. The fixed voice churn rate decreased slightly from 1.2% in 2011 to 1.1% in 2012. The broadband churn rate was 1.4% during 2012, the same rate as in 2011.

Segment operating income decreased by 29.4% in 2012. Adjusted segment operating income decreased by 27.9%. Segment operating margin was
17.7% in 2012 and 23.7% in 2011. Adjusted operating margin for this segment was 18.9% in 2012 and 24.8% in 2011. The decrease in 2012 is due principally to higher broadband maintenance and energy costs, increases in our pension obligations to former
employees and increased personnel costs as a consequence of an employee salary increase during 2012.

Brazil

In January 2012, we acquired control of a majority of the voting equity of Net Serviços. We began consolidating Net
Serviços from January 1, 2012. Prior to January 1, 2012, we accounted for Net Serviços using the equity method. The consolidation of Net Serviços affects the comparability of our results for 2012 to our results 2011
and 2010.

Including the effects of the Net Serviços consolidation, segment operating revenues increased by 18.1% in
2012. Adjusted operating revenues increased by 4.7% in 2012. At constant exchange rates and excluding the effects of the consolidation of Net Serviços, segment operating revenues for 2012 increased by 1.9% over 2011. This increase is due
principally to increases in wireless data and Pay TV revenues. Wireless data revenues increased 19.1% in 2012 and fixed data revenues increased 3.5%, as a result of greater use of value-added services such as SMS messaging and web browsing. Pay TV
revenues increased by 60.9% in 2012 as a result of subscriber growth driven by new commercial packages of Embratel. Wireless and fixed voice revenues decreased by 6.7% and 5.2% in 2012. Revenues decreased the most for wireless and fixed long
distance services, which primarily reflects promotions implemented during 2012.

In 2012, the number of prepaid wireless
subscribers increased by 9.3%, and the number of postpaid wireless subscribers increased by 3.2%, resulting in an increase in the total number of wireless subscribers in our Brazil segment of 8.0% to approximately 65.2 million as of
December 31, 2012. In 2012, the number of fixed voice RGUs increased by 12.2%, the number of broadband RGUs increased by 23.4% and the number of pay TV RGUs increased by 28.5%, resulting in an increase in total RGUs in our Brazil segment of
21.2% to approximately 28.6 million as of December 31, 2012.

Average MOUs per subscriber increased by 15.0% in
2012. The increase in average MOUs during 2012 reflects increased traffic, on net and from other providers, in our network, which was partly due to new commercial plans and promotional packages. ARPU decreased by 20.7% in 2012. This decrease during
2012 reflects a decrease in monthly airtime and interconnection rates that was not offset by increased data usage.

Segment
operating income increased by 22.0% in 2012. Segment operating margin was 5.5% in 2012 and 5.3% in 2011. Adjusted segment operating margin was 4.6% in 2012 and 6.1% in 2011. Adjusted segment operating income and operating margin in 2012 were
affected by subscriber acquisition costs, higher costs for customer service, call centers and energy, higher rent and marketing costs associated with the integration of our various Brazilian brands.

Colombia

Segment operating revenues increased 20.2% in 2012. Adjusted operating revenues increased by 10.9%. This increase reflected principally
increases in fixed and wireless data revenues and fixed voice. Fixed and



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wireless data services increased by 31.9% in 2012, as a result of new promotional packages focused on SMS texting and web browsing. Fixed and wireless voice revenues increased by 4.9% in 2012.
Pay TV revenues increased by 8.5% in 2012.

Average MOUs per subscriber increased by 13.3% in 2012. ARPU increased by 21.5% in
2012. The increases in average MOUs and ARPU in 2012 reflected primarily an increase in data usage, as well as increased traffic, on net and from other providers, in our network, partially resulting from the net increase in subscriber growth.

Segment operating income increased by 16.8% in 2012. Adjusted segment operating income increased by 11.2%. Segment operating
margin was 30.9% in 2012 and 31.8% in 2011. Adjusted segment operating margin was 32.9% in 2012 and 32.8% in 2011. The increases in segment operating income and operating margin in 2012 are due principally to more efficient collections and lower
personnel costs.

Southern ConeArgentina, Chile, Paraguay and Uruguay

Segment operating revenues increased by 13.1% in 2012, reflecting increases of 10.2% in Argentina, Paraguay and Uruguay and 19.8% in
Chile. Adjusted segment operating revenues increased by 14.4%, reflecting operating revenues increases of 15.0% in Argentina, Paraguay and Uruguay and 14.4% in Chile. These increases were driven primarily by higher usage of all services, principally
data services. 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.

Average MOUs per subscriber increased by 1.3% in 2012, primarily due to new promotional packages for prepaid and postpaid services. ARPU
increased by 0.7% in Argentina, Paraguay and Uruguay and increased by 11.3% in Chile. ARPU was positively affected by higher prices and adversely affected by lower interconnection rates.

Segment operating income decreased by 6.2% in 2012, reflecting a decrease in operating income of 0.4% in Argentina, Paraguay and Uruguay
and an increase in operating loss of 20.4% in Chile. Adjusted segment operating income decreased by 6.5%, reflecting an increase in operating income of 4.1% in Argentina, Paraguay and Uruguay and an increase in operating loss of 8.6% in Chile.
Segment operating margin was 13.0% in 2012, reflecting an operating margin of 26.0% in Argentina, Paraguay and Uruguay and (14.7)% in Chile. In 2012, adjusted operating margin was 15.8%, reflecting an adjusted operating margin of 27.6% in Argentina,
Paraguay and Uruguay and (15.5)% in Chile. In 2011, adjusted operating margin was 17.1%, reflecting an adjusted operating margin of 30.5% in Argentina, Paraguay and Uruguay, and (16.4)% in Chile. Adjusted segment operating income in Argentina,
Paraguay and Uruguay was negatively affected by customer-service costs and inflationary effects in most costs and expenses, mainly in Argentina. Segment operating income in Chile was negatively affected by acquisition costs.

Andean RegionEcuador and Peru

Segment operating revenues increased by 20.1% in 2012, reflecting operating revenues increases of 12.3% in Ecuador and 28.5% in Peru. Adjusted segment operating revenues increased by 11.3%, reflecting
increases of 6.2% in Ecuador and 16.8% in Peru. These increases were driven primarily by higher usage of wireless data in both countries.

Average MOUs per subscriber decreased by 0.7% in 2012, reflecting principally decreased usage by prepaid subscribers and higher utilization of minutes in postpaid plans. ARPU increased by 9.4% in Ecuador
and increased by 11.7% in Peru. ARPU in both countries was positively 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.



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Segment operating income increased by 17.6% in 2012, reflecting operating income increases
of 10.6% in Ecuador and 27.4% in Peru. Adjusted segment operating income increased by 14%, reflecting increases of 7.6% in Ecuador and 21.8% in Peru. Segment operating margin was 31.0% in 2012, reflecting operating margins of 34.9% in Ecuador and
27.4% in Peru. In 2012 adjusted segment operating margin was 33.7%, reflecting operating margins of 35.9% in Ecuador and 31.6% in Peru. The increase in segment operating income and operating margin in 2012 was driven by lower royalties and lower
interconnections fees in Peru.

Central AmericaGuatemala, El Salvador, Honduras, Nicaragua, Panama and Costa Rica

Segment operating revenues increased 17.8% in 2012. Adjusted segment operating revenues increased by 9.7% in 2012. These
increases were driven primarily by increases in wireless data, broadband and pay TV services, offset by decreases in fixed voice services. 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 Panama and the currencies in Costa Rica, Guatemala, Honduras and Nicaragua are relatively stable against the U.S. dollar.

Average MOUs per subscriber increased by 10.1% in 2012, primarily due to new commercial plans for voice and data services. ARPU increased
by 6.8%. This increase was primarily attributable to increased usage of our services, and more specifically, of data services in Guatemala, El Salvador, Nicaragua and Honduras and of voice services in Honduras, partly offset by decreased usage of
voice services in Guatemala, El Salvador and Nicaragua.

Segment operating margin was (15.2)% in 2012 and (0.3)% in 2011.
Adjusted segment operating margin was (14.9)% in 2012 and 0.5% in 2011. Segment operating margin in 2012 was affected by higher depreciation, partially resulting from the depreciation of plant and equipment of Digicel Honduras, which we acquired in
November 2011.

United States

Segment operating revenues increased by 33.7% in 2012. Adjusted segment operating revenues increased by 25.7% in 2012. This increase is due principally to customer base increases, and the growth of the
Straight Talk and SafeLink promotional plans, which continue to grow but not at the same pace as in 2011. Wireless data services increased by 77% during 2012 and now represent 34.5% of service revenues. In 2012, the number of wireless subscribers,
all of which are prepaid subscribers, increased by 13.3% to approximately 2.6 million as of December 31, 2012.

Average MOUs per subscriber increased by 20.9% in 2012. ARPU increased by 18.4% in 2012. The increase in average MOUs and ARPU is
primarily due to our new commercial plans and promotional packages, which offer unlimited usage for a fixed monthly rate.

Segment operating income increased 106.6% in 2012. Adjusted segment operating income increased by 55.9% in 2012, reflecting the increase
in our operating revenues, as well as important cost reductions on airtime purchases, due to new agreements reached with operators for lower airtime and data purchase costs.

Segment operating margin was 2.7% in 2012 and 1.7% in 2011. Adjusted segment operating margin was 9.9% in 2012 and 8.0% in 2011.

CaribbeanDominican Republic and Puerto Rico

Segment operating
revenues increased by 1.4% in 2012. Adjusted segment operating revenues decreased by 3.1%. 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 currency in the
Dominican Republic is relatively stable against the U.S. dollar.

Average MOUs per subscriber decreased by 0.3% in 2012,
primarily due to more competitive packages for wireless voice services. ARPU increased by 12.3% in 2012. This increase in ARPU was primarily attributable to increased usage of data and value added services in both countries.



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Segment operating income decreased by 9.6% in 2012. Adjusted segment operating income
decreased by 27.2% in 2012. Segment operating margin was 8.4% in 2012 and 9.4% in 2011. Adjusted segment operating margin was 8.8% in 2012 and 11.8% in 2011. The decreases in adjusted segment operating income and operating margin in 2012 were driven
primarily by increases in costs associated with content acquisition, especially with respect to Pay TV programming, energy, network maintenance, technical personnel, customerservice and labor obligations.

2011 Compared to 2010

Mexico Wireless

Segment operating revenues increased by 2.3% in 2011.
Adjusted segment operating revenues increased by 5.1% in 2011. This increase was primarily driven by an increase in data revenues. Wireless voice revenues decreased by 1.3% in 2011, reflecting primarily a decrease in interconnection revenues due to
lower interconnection fees that were not compensated by volume despite growth in revenues from monthly charges and airtime, long-distance and roaming services. Wireless data revenues increased by 24.8% in 2011, principally due to increased revenue
from SMS messaging, two-way messaging and e-commerce.

In 2011, the number of prepaid wireless subscribers increased by 0.8%,
and the number of postpaid wireless subscribers increased by 17.3%, resulting in an increase in the total number of wireless subscribers in Mexico of 2.4% to approximately 65.7 million as of December 31, 2011, which represented a net
addition of 1.5 million wireless subscribers.

Average MOUs per subscriber increased by 6.2% in 2011. ARPU decreased by
5.7% in 2011. During 2011, we lowered the price of some of our services in Mexico through new commercial plans and promotions, which contributed to the increase in subscribers (primarily prepaid subscribers) and MOUs and the decrease in ARPU.
Reductions in interconnection tariffs and a decline in long-distance traffic resulted in lower interconnection revenues in 2011. The wireless churn rate for our Mexican Wireless operations increased from 3.2% in 2010 to 3.7% in 2011, although such
increase partly reflects the implementation of a more conservative churn policy.

Segment operating income decreased by 0.1%
in 2011. Adjusted segment operating income increased by 2.3%. This increase was primarily driven by the increase in operating revenues. Segment operating margin (operating income as a percentage of operating revenues) was 44.9% in 2011 and 46.0% in
2010. Adjusted segment operating margin was 52.5% in 2011 and 53.9% in 2010. The decrease in adjusted segment operating margin in 2011 is due principally to higher customerservice, advertisement and employee profit-sharing costs.

Mexico Fixed

Segment operating revenues decreased by 2.4% in 2011. Adjusted segment operating revenues decreased by 2.1%. This decrease is principally due to decreases in voice revenues, partially offset by an
increase in data revenues. Fixed voice revenues decreased by 7.3% in 2011, reflecting significant reductions in local and long-distance traffic and lower interconnection fees. Revenues from broadband and corporate network services increased by 12.0%
in 2011, principally due to corporate and residential subscriber growth.

In 2011, the number of fixed voice RGUs in Mexico
decreased by 5.0%, and the number of broadband RGUs in Mexico increased by 8.1%, resulting in a decrease in total RGUs in Mexico of 0.8% to approximately 22.8 million as of December 31, 2011. In 2011, long-distance minutes increased by
6.6% and interconnection minutes decreased by 0.2%, resulting in an increase in total minutes in Mexico of 2.5%. The fixed voice churn rate increased slightly from 0.9% in 2010 to 1.2% in 2011. The broadband churn rate decreased slightly from 1.6%
in 2010 to 1.4% in 2011.

Segment operating income decreased by 5.0% in 2011. Adjusted segment operating income decreased by
14.7%. Segment operating margin was 23.7% in 2011 and 24.3% in 2010. Adjusted segment operating margin



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was 25.2% in 2011 and 28.9% in 2010. The decrease in adjusted segment operating income and operating margin in 2011 is due principally to higher broadband maintenance and energy costs, increases
in our pension obligations to former employees and increased costs related to the installation of equipment for Ciudad Segura.

Brazil

Segment operating revenues increased by 11.4% in 2011. Adjusted
segment operating revenues increased by 8.2% in 2011. This increase is due principally to increases in wireless data and Pay TV revenues. Wireless data revenues increased 24.3% in 2011 and fixed data revenues increased 4.0%, as a result of greater
use of value-added services such as SMS messaging and web browsing. Pay TV revenues increased by 122.6% in 2011 as a result of subscriber growth driven by new commercial packages of Embratel. Wireless and fixed voice revenues increased by 2.4% and
3.2% in 2011.

In 2011, the number of prepaid wireless subscribers increased by 15.3%, and the number of postpaid wireless
subscribers increased by 23.7%, resulting in an increase in the total number of wireless subscribers in our Brazil segment of 16.9% to approximately 60.4 million as of December 31, 2011. In 2011, the number of fixed voice RGUs increased by
15.4%, the number of broadband RGUs increased by 23.6% and the number of pay TV RGUs increased by 41.6%, resulting in an increase in total RGUs in our Brazil segment of 26.8% to approximately 23.6 million as of December 31, 2011.

Average MOUs per subscriber increased by 4.2% in 2011. The increase in average MOUs during 2011 reflects increased traffic,
on net and from other providers, in our network, which was partly due to new commercial plans and promotional packages in Brazil. ARPU decreased by 6.9% in 2011. This decrease during 2011 reflects a decrease in monthly, airtime and interconnection
rates that was not offset by an increased data usage.

Segment operating income decreased by 31.7% in 2011. Adjusted segment
operating income decreased by 31.9%. Segment operating margin was 5.3% in 2011 and 8.7% in 2010. Adjusted segment operating margin was 4.6% in 2011 and 7.2% in 2010. Adjusted segment operating income and operating margin in 2011 were affected by
subscriber acquisition, customer service, call-center and energy costs, as well as higher rents for the use of space for our equipment and marketing costs associated with the integration of our various Brazilian brands.

Colombia

Segment operating revenues increased 20.2% in 2011. This increase partly reflects the appreciation of the Colombian peso against the
Mexican peso. Adjusted segment operating revenues increased by 14.5%. This increase reflected principally increases in fixed and wireless data revenues. Fixed and wireless data services increased by 29.0% in 2011, as a result of new promotional
packages focused on SMS texting and web browsing. Fixed and wireless voice revenues increased by 7.4% in 2011. Pay TV revenues increased by 4.7% in 2011.

Average MOUs per subscriber increased by 2.5% in 2011. ARPU increased by 3.4% in 2011. The increases in average MOUs and ARPU in 2011 reflected primarily an increase in data usage, as well as increased
traffic, on net and from other providers, in our network, partially resulting from the net increase in subscriber growth.

Segment operating income increased by 44.2% in 2011. Adjusted segment operating income increased by 39.3%. Segment operating margin was
31.8% in 2011 and 26.5% in 2010. Adjusted segment operating margin was 32.8% in 2011 and 26.9% in 2010. The increases in adjusted segment operating income and operating margin in 2011 are due principally to efficiencies obtained in network operating
and technical personnel costs, which were partly offset by increased costs of network maintenance and content acquisition, especially with respect to Pay TV programming.



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Southern ConeArgentina, Chile, Paraguay and Uruguay

Segment operating revenues increased by 16.8% in 2011, reflecting operating revenues increases of 14.0% in Argentina, Paraguay and Uruguay
and 23.9% in Chile. Adjusted segment operating revenues increased by 19.2%, reflecting adjusted operating revenues increases of 28.0% in Argentina, Paraguay and Uruguay and 19.4% in Chile. These increases were driven primarily by higher usage of all
services and increases in the price of our services, especially in Argentina. 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.

Average MOUs per subscriber increased by 9.0% in 2011, primarily due to new promotional packages
for prepaid and postpaid services. ARPU increased by 7.2% in Argentina, Paraguay and Uruguay and decreased by 1.4% in Chile. ARPU was positively affected by higher prices and adversely affected by our promotional packages, as well as lower
interconnection rates.

Segment operating income increased by 14.3% in 2011, reflecting an increase in operating income of
18.2% in Argentina, Paraguay and Uruguay and an increase in operating loss of 34.5% in Chile. Adjusted segment operating income increased by 10.8%, reflecting an increase in adjusted operating income of 17.8% in Argentina, Paraguay and Uruguay and
an increase in adjusted operating loss of 30.2% in Chile. Segment operating margin was 15.7% in 2011, reflecting an operating margin of 28.8% in Argentina, Paraguay and Uruguay and (14.6)% in Chile. Segment operating income was 16.0% in 2010,
reflecting an operating margin of 27.7% in Argentina, Paraguay and Uruguay and (13.5)% in Chile. In 2011, adjusted operating margin was 18.0%, reflecting an adjusted operating margin of 37.1% in Argentina, Paraguay and Uruguay and (16.4)% in Chile,
and in 2010, adjusted operating margin was 19.4%, reflecting an adjusted operating margin of 38.0% in Argentina, Paraguay and Uruguay and (15.0)% in Chile. Adjusted segment operating income in Argentina, Paraguay and Uruguay was negatively affected
by customerservice costs and inflationary effects on employee salaries, as well as energy and subscriber acquisition costs, though these were offset by higher prices. Adjusted segment operating income in Chile was negatively affected by maintenance,
acquisition of satellite capacity and customerservice costs, as well as increased concession fees paid to the government resulting from higher revenues.

Andean RegionEcuador and Peru

Segment operating revenues increased
by 15.3% in 2011, reflecting operating revenues increases of 13.4% in Ecuador and 17.4% in Peru. Adjusted segment operating revenues increased by 14.5%, reflecting adjusted operating revenues increases of 13.7% in Ecuador and 16.0% in Peru. These
increases were driven primarily by higher usage of all services.

Average MOUs per subscriber increased by 22.9% in 2011,
reflecting principally increased usage by prepaid subscribers and higher utilization of minutes in postpaid plans. ARPU increased by 3.5% in Ecuador and decreased by 3.0% 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 23.4% in 2011, reflecting operating income increases of 25.9% in Ecuador and 20.1% in Peru. Adjusted segment operating income increased by 22.6%, reflecting adjusted
operating income increases of 18.9% in Ecuador and 27.7% in Peru. Segment operating margin was 31.6% in 2011, reflecting operating margins of 35.4% in Ecuador and 27.6% in Peru. Segment operating margin was 29.6% in 2010, reflecting operating
margins of 32.5% in Ecuador and 26.3% in Peru. In 2011, adjusted segment operating margin was 34.4%, reflecting adjusted operating margins of 35.5% in Ecuador, and 30.2% in Peru, and in 2010, adjusted segment operating margin was 32.1%, reflecting
adjusted operating margins of 34.0% in Ecuador and 27.5% in Peru. The increase in adjusted segment operating income and operating margin in 2011 was driven by lower subscriber acquisition costs partially offset by increased concession fees, employee
profit sharing and network maintenance costs, including installation of new cell towers.



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Central AmericaGuatemala, El Salvador, Honduras, Nicaragua, Panama and Costa Rica

Segment operating revenues increased by 9.5% in 2011. Adjusted segment operating revenues increased by 14.0% in 2011.
These increases were driven primarily by increases in wireless voice, data, broadband and pay TV services, offset by decreases in fixed voice services. 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 Panama, and the currencies in Costa Rica, Guatemala, Honduras and Nicaragua are relatively stable against the U.S. dollar.

Average MOUs per subscriber increased by 20.9% in 2011, primarily due to new commercial plans for voice and data services. ARPU increased
by 4.3%. This increase was primarily attributable to increased usage of our services, and more specifically, of data services in Guatemala, El Salvador, Nicaragua and Honduras and of voice services in Honduras, partly offset by decreased usage of
voice services in Guatemala, El Salvador and Nicaragua.

In both periods we recognized a small segment operating loss and a
small adjusted segment operating loss. Segment operating margin was (0.3)% in 2011 and (1.1)% in 2010. Adjusted segment operating margin was 0.5% in 2011 and (3.8)% in 2010. In 2011, we replaced our network in Guatemala, resulting in a Ps.645
million write-off of the book value of the old network.

We acquired Digicel Honduras in November 2011. We also commenced
operations in Costa Rica in November 2011.

United States

Segment operating revenues increased by 33.2% in 2011. Adjusted segment operating revenues increased by 35.3% in 2011. This increase
reflected principally new commercial plans and promotional packages such as Straight Talk and SafeLink that contributed to the increase in subscriber growth and usage. In 2011, the number of wireless subscribers, all of which are prepaid
subscribers, increased by 11.3% to approximately 19.8 million as of December 31, 2011.

Average MOUs per subscriber
increased by 61.5% in 2011. ARPU increased by 18.0% in 2011. The increase in average MOUs and ARPU is primarily due to our new commercial plans and promotional packages, which offer unlimited usage for a fixed monthly rate.

Segment operating income decreased 49.5% in 2011. Adjusted segment operating income increased by 31.0% in 2011, reflecting the increase
in our operating revenues.

Segment operating margin was 1.7% in 2011 and 4.5% in 2010. Adjusted segment operating margin was
8.0% in 2011 and 8.2% in 2010. The decrease in adjusted segment operating margin in 2011 reflects principally higher subscriber acquisition costs, service costs, equipment costs and the increase in purchase of airtime, megabytes and other services
from wireless services providers for resale to our customers.

CaribbeanDominican Republic and Puerto Rico

Segment operating revenues decreased by 2.4% in 2011. Adjusted segment operating revenues decreased by 1.7%. This slight
decrease was driven primarily by increases in wireless data and pay TV services, offset by decreases in wireless and fixed voice services. 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 currency in the Dominican Republic is relatively stable against the U.S. dollar.

Average
MOUs per subscriber increased by 8.3% in 2011, primarily due to more competitive packages for wireless voice services. ARPU increased by 9.8% in 2011. This increase in ARPU was primarily attributable to increased usage of our data and value added
services in both countries.



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Segment operating income decreased by 22.6% in 2011. Adjusted segment operating income
decreased by 4.4% in 2011. Segment operating margin was 9.4% in 2011 and 11.9% in 2010. Adjusted segment operating margin was 11.8% in 2011 and 12.1% in 2010. The decreases in adjusted segment operating income and operating margin in 2011 were
driven primarily by increases in costs associated with content acquisition, especially with respect to Pay TV programming, energy, network maintenance, technical personnel and customer service, as well as an increase in accounts considered doubtful
relating to services provided to the government of Puerto Rico.

In November 2011, we sold our Jamaican operations to Digicel.

Liquidity and Capital Resources

Funding Requirements

We generate substantial cash flows from our
operations. On a consolidated basis, operating activities provided Ps.206.6 billion in 2012 and Ps.193.2 billion in 2011. Our cash and cash equivalents amounted to Ps.45.5 billion at December 31, 2012 compared to Ps.59.1 billion at
December 31, 2011. 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 and acquisition or renewal of licenses were Ps.130.9 billion in 2012 and Ps.121.1 billion in 2011. 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. We have budgeted capital expenditures for 2013 to be approximately U.S.$9.99 billion (Ps.129.9 billion).
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | In some years, we make substantial expenditures on acquisitions. In 2012, we spent Ps.55.0 billion acquiring shares of KPN and Ps.16.4 billion
acquiring shares of Telekom Austria. In April 2013, KPN launched a rights offering to raise up to 3 billion, and we have committed to participate in proportion to our current investment.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We must pay interest on our indebtedness and repay principal when due. As of December 31, 2012, we had Ps.13.6 billion of principal due in 2013.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We pay regular dividends. We paid Ps.15.4 billion in dividends in 2012 and Ps.17.0 billion in 2011. Our shareholders have approved the payment of a
Ps.0.22 dividend per share in two installments in 2013.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We regularly repurchase our own shares. We spent (including commissions and value-added taxes) Ps.17.8 billion repurchasing our own shares in the open
market in 2012 and Ps.53.7 billion in 2011. Our shareholders have authorized additional repurchases, and we have continued repurchasing our shares in the open market in 2013, 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, 2012.
Many of our obligations are denominated in currencies other than Mexican pesos. Our purchase obligations and approximately 49.0% 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 than1 year |     |        | 1-3 years |  |     | 4-5 years |  |  | After 5 years |       
|                                                 |  | (in millions)          |        
|Contractual obligations as of December 31, 2012: |  |                        |         |  |                 |     |        |           |  |     |           |  |  |               |        |  |  |     |         | 
|Equipment leases                                 |  | Ps.                    | 580     |  |                 | Ps. | 206    |           |  | Ps. | 374       |  |  | Ps.           |       |  |  | Ps. |        | 
|Real estate leases                               |  |                        | 76,112  |  |                 |     | 15,955 |           |  |     | 17,210    |  |  |               | 14,329 |  |  |     | 28,618  | 
|Short-term debt                                  |  |                        | 13,622  |  |                 |     | 13,622 |           |  |     |          |  |  |               |       |  |  |     |        | 
|Long-term debt                                   |  |                        | 404,048 |  |                 |     |       |           |  |     | 63,175    |  |  |               | 74,580 |  |  |     | 266,293 | 
|Purchase obligations                             |  |                        | 30,461  |  |                 |     | 27,540 |           |  |     | 2,921     |  |  |               |       |  |  |     |        | 
|                                                 |  |                        |         |  |                 |     |        |           |  |     |           |  |  |               |        |  |  |     |         | 
|Total                                            |  | Ps.                    | 524,823 |  |                 | Ps. | 57,323 |           |  | Ps. | 126,520   |  |  | Ps.           | 54,459 |  |  | Ps. | 286,511 | 
|                                                 |  |                        |         |  |                 |     |        |           |  |     |           |  |  |               |        |  |  |     |         | 

Other than the amounts described in the table above, we had no other outstanding material purchase
commitments as of December 31, 2012. We enter into a number of supply, advertising and other contracts in the ordinary course of business, but those contracts are not material to our liquidity.

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.

Borrowings

In addition to cash flows generated from operations, we have used borrowings to fund acquisitions and capital
expenditures and to refinance debt. We have relied on a combination of borrowings in the Mexican and international capital markets, borrowings from international banks and equipment financing.

As of December 31, 2012, our total consolidated indebtedness was Ps.417.7 billion, compared to Ps.380.6 billion as of
December 31, 2011. Our net debt (total debt minus cash and cash equivalents) at December 31, 2012 was Ps.372.2 billion, an increase of 16.0% as compared to December 31, 2011. This increase reflects, among other things, the acquisition
of ownership interest in various entities, including KPN and Telekom Austria.

Without taking into account the effects of
derivative financial instruments that we use to manage our interest rate and currency risk, approximately 81.0% of our indebtedness at December 31, 2012 was denominated in currencies other than Mexican pesos (approximately 60.4% of such
non-Mexican peso debt in U.S. dollars and 39.6% in other currencies), and approximately 7.0% of our consolidated debt obligations bore interest at floating rates. After the effects of derivative transactions, approximately 22.9% of our total debt as
of December 31, 2012 was denominated in U.S. dollars and approximately 2.0% was subject to floating rates.

The weighted
average cost of all our third-party debt at December 31, 2012 (excluding commissions and reimbursement of certain lenders for Mexican taxes withheld) was approximately 5.0%.



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Our major categories of indebtedness at December 31, 2012 are summarized in the table
below.



|                                                           |  |                            |         | 
|---------------------------------------------------------- |  | -------------------------- | ------- | 
|Debt:                                                      |  | (millions
ofMexican pesos) |        
|Denominated in U.S. dollars:                               |  |                            |         | 
|Export credit agency loans                                 |  | Ps.                        | 6,213   | 
|Other bank loans                                           |  |                            | 1,889   | 
|5.500% Notes due 2014                                      |  |                            | 10,343  | 
|5.750% Notes due 2015                                      |  |                            | 9,265   | 
|3.625% Senior Notes due 2015                               |  |                            | 9,758   | 
|5.500% Senior Notes due 2015                               |  |                            | 7,218   | 
|2.375% Senior Notes due 2016                               |  |                            | 26,020  | 
|5.625% Notes due 2017                                      |  |                            | 7,586   | 
|5.000% Senior Notes due 2019                               |  |                            | 9,758   | 
|5.500% Senior Notes due 2019                               |  |                            | 4,910   | 
|5.000% Senior Notes due 2020                               |  |                            | 27,644  | 
|8.57% Senior Notes due 2020                                |  |                            | 4,554   | 
|3.125% Senior Notes due 2022                               |  |                            | 20,816  | 
|6.375% Notes due 2035                                      |  |                            | 12,767  | 
|6.125% Notes due 2037                                      |  |                            | 4,804   | 
|6.125% Senior Notes due 2040                               |  |                            | 26,020  | 
|4.375% Senior Notes due 2042                               |  |                            | 14,962  | 
|                                                           |  |                            |         | 
|Total                                                      |  |                            | 204,527 | 
|Denominated in Mexican pesos:                              |  |                            |         | 
|Domestic senior notes (certificados bursátiles)            |  |                            | 46,841  | 
|8.75% Senior Notes due 2016                                |  |                            | 4,500   | 
|9.00% Senior Notes due 2016                                |  |                            | 5,000   | 
|8.46% Senior Notes due 2036                                |  |                            | 7,872   | 
|6.45% Senior Notes due 2022                                |  |                            | 15,000  | 
|                                                           |  |                            |         | 
|Total                                                      |  |                            | 79,213  | 
|Denominated in euro:                                       |  |                            |         | 
|3.75% Senior Notes due 2017                                |  |                            | 17,164  | 
|4.125% Senior Notes due 2019                               |  |                            | 17,164  | 
|4.75% Senior Notes due 2022                                |  |                            | 12,874  | 
|3.00% Senior Notes due 2021                                |  |                            | 17,164  | 
|                                                           |  |                            |         | 
|Total                                                      |  |                            | 64,366  | 
|Denominated in pounds sterling:                            |  |                            |         | 
|5.000% Senior Notes due 2026                               |  |                            | 10,574  | 
|5.75% Senior Notes due 2030                                |  |                            | 13,746  | 
|4.375% Senior Notes due 2041                               |  |                            | 15,861  | 
|                                                           |  |                            |         | 
|Total                                                      |  |                            | 40,181  | 
|Denominated in Japanese yen:                               |  |                            |         | 
|1.23% Senior Notes due 2014                                |  |                            | 1,035   | 
|1.53% Senior Notes due 2016                                |  |                            | 765     | 
|2.95% Senior Notes due 2039                                |  |                            | 1,949   | 
|                                                           |  |                            |         | 
|Total                                                      |  |                            | 3,749   | 
|Denominated in Swiss francs:                               |  |                            |         | 
|2.25% Senior Notes due 2015                                |  |                            | 3,269   | 
|2.00% Senior Notes due 2017                                |  |                            | 3,837   | 
|1.13% Senior Notes due 2018                                |  |                            | 3,553   | 
|                                                           |  |                            |         | 
|Total                                                      |  |                            | 10,659  | 
|Denominated in Colombian pesos                             |  |                            | 4,562   | 
|Denominated in Brazilian reais                             |  |                            | 2,264   | 
|Denominated in other currencies                            |  |                            | 8,149   | 
|                                                           |  |                            |         | 
|Total debt                                                 |  |                            | 417,670 | 
|Less short-term debt and current portion of long-term debt |  |                            | 13,622  | 
|                                                           |  |                            |         | 
|Total long-term debt                                       |  |                            | 404,048 | 
|                                                           |  |                            |         | 



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



| |  |  | 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 2013 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).
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Global peso note program.    In November 2012, we established a new program to issue peso-denominated notes that can be
distributed and traded on a seamless basis in Mexico and internationally. The notes are registered with both the U.S. Securities and Exchange Commission and the Mexican Banking and Securities Commission. We sold Ps.15 billion of notes under the
program in November 2012 and a further Ps.7.5 billion in March 2013. We intend to use the program to raise a total of Ps.100 billion over five years to increase the share of Mexican pesos in our overall funding.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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



| |  |  | Bank loans.    At December 31, 2012, we had approximately Ps.3,718 million outstanding under a number of bank
facilities bearing interest at fixed 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. 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. As of the date of this annual report, we are in compliance with these covenants.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | 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.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Some 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. As of December 31, 2012, we had, on an unconsolidated basis, unsecured and unsubordinated indebtedness of approximately Ps. 361.8 billion (U.S.$27.8 billion) excluding guarantees of subsidiaries indebtedness. As of
December 31, 2012, our subsidiaries had indebtedness (excluding guarantees of indebtedness of us and our other subsidiaries) of approximately Ps. 55.8 billion (U.S.$4.3 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. We have indebtedness denominated in currencies, principally the U.S. dollar, other than the currency of the operating environment. We use cross-currency
swaps and forwards to adjust



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the resulting exchange rate exposures. We do not use derivatives to hedge the exchange rate exposures that arise from having operations in different countries.

We also use interest rate swaps 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, 2012, we had derivatives positions with an aggregate net fair
value of Ps.(2.2) billion, which are described in Note 11 to our audited consolidated financial statements.

Off-Balance Sheet Arrangements

As of December 31, 2012, 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.

Fair Value of
Financial Assets and Liabilities

We have substantial financial assets and liabilities that we recognize at their fair
value, which is an estimate of the amount at which the instrument could be exchanged in a current transaction between willing parties. The methodologies and assumptions we use to estimate an instruments fair value depend on the type of
instrument and include (i) recognizing cash and cash equivalents and trade receivables and trade payables and other current liabilities at close to their carrying amount, (ii) recognizing quoted instruments at their price quotations on the
reporting date, (iii) recognizing unquoted instruments, such as loans from banks and obligations under financial leases, by discounting future cash flows using rates for similar instruments and (iv) applying various valuation techniques,
such as present value calculations, to derivative instruments. Using different methodologies or assumptions to estimate the fair value of our financial assets and liabilities could materially impact our reported financial results.

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 2012 to Ps.92.3 billion, or 14.9% 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



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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, for example, 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

We have large amounts of long-lived assets, including property, plant and equipment, intangible assets, investments in affiliates and
goodwill, on our balance sheet. Under IFRS, we are required to test long-lived assets for impairment when circumstances indicate a potential impairment or, in some cases, at least on an annual basis. The impairment analysis for long-lived assets
requires us to estimate the recovery value of the asset, which is the greater of its fair value (minus any disposal costs) and its value in use. To estimate the fair value of a long-lived asset, we typically take into account recent market
transactions or, if no such transactions can be identified, we use a valuation model that requires the making of certain assumptions and estimates. Similarly, to estimate the value in use 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 this impairment analysis, including all assumptions
and estimates related thereto, 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. 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.

The carrying values of our equity investments in KPN and Telekom Austria as of December 31, 2012 were
approximately Ps.55.0 billion and Ps.16.8 billion, respectively. The fair values of such investments, based on the year-end closing share prices on the Amsterdam Stock Exchange and Vienna Stock Exchange, were approximately
Ps.22.6 billion for KPN and Ps.10.4 billion for Telekom Austria, which are below their respective carrying values as of December 31, 2012. Under IFRS, an impairment is recognized as the difference between the carrying value of the equity
investment and the greater of its fair value and value in use. The estimated value in use of our investment in KPN, based on projections of KPNs future results, was Ps.55.9 billion as of December 31, 2012. While the computation of the
value in use of our investment in Telekom Austria is ongoing, we believe that we will recover the carrying value of such investment through its future value in use. Therefore, no impairment charge was recognized for either KPN or Telekom Austria in
our audited consolidated financial statements. For more information, see Note 10 to our audited financial statements included in this annual report.

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



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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 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.

As of December 31, 2012, we have recorded Ps.18 billion of deferred tax
assets for net operating loss carry-forwards, primarily related to our foreign operations in Brazil. We believe it likely that such amounts will be recovered in future periods through a combination of tax planning strategies and other sources of
future taxable 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 31, 2012. 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.



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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. Our bylaws provide for the Board of Directors to consist of between five
and twenty-one directors and allow for the election 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 reelected 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), the determination as to the independence of our directors is made by our shareholders, 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 were reelected, and the Corporate Secretary and the Corporate Pro-Secretary were reappointed at the annual general shareholders meeting held on April 22, 2013,
with fifteen directors elected by the AA Shares and A Shares voting together and two directors elected by the L Shares. One alternate director was reelected.

Our bylaws provide that the members of the Board of Directors are elected for a term 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 thirty-day period if new members are not elected. Furthermore, in certain circumstances provided under the Mexican Securities Law, the Board of Directors may elect temporary directors who then may be elected or
substituted at the shareholders meetings. The names and positions of the members of the Board elected and reelected at the annual general shareholders meeting held on April 22, 2013, their year of birth, and information concerning
their committee membership and principal business activities outside América Móvil are as follows:



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|                                                                                                                               |  |                                                                        |  |                                                                                                                                                                            
|------------------------------------------------------------------------------------------------------------------------------ |  | ---------------------------------------------------------------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Directors elected by holders of Series AA and Series A Shares:                                                                
|                                                                                                                               |  |                                                                       
|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: Other
directorships: |  | 2011 2014
Chairman of the Board of Telmex Chairman of the
Board of Grupo Carso, S.A.B. de C.V., Grupo Sanborns, S.A. de C.V., and U.S. Commercial Corp, S.A. de C.V.       
|                                                                                                                               |  | Business experience:                                                   |  | Chief Executive Officer of Sanborn Hermanos, S.A. de C.V.                                                                                                                  
|                                                                                                                               |  |                                                                       
|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 2014
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
|                                                                                                                               |  | Business experience:                                                   |  | Chief Executive Officer of Grupo
Carso, S.A.B. de C.V. and Vice President of Commercial Markets of Telmex                                                                  
|                                                                                                                               |  |                                                                       
|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 2014
Chief Executive Officer of América Móvil Director of Grupo Carso, S.A.B. de C.V. and Telmex                                                                      
|                                                                                                                               |  | Business experience:                                                   |  | Chief Executive Officer of Hulera Euzkadi, S.A. de C.V.                                                                                                                    
|                                                                                                                               |  |                                                                       
|Luis Alejandro Soberón Kuri                                                                                                    |  | Born:                                                                  |  | 1960                                                                                                                                                                       
|Director and Member of the Operations in Puerto Rico and the United States of America Committee                                |  | First elected:Term expires:
Principal occupation:                      |  | 2000 2014
Chief Executive Officer of Corporación Interamericana de Entretenimiento, S.A.B. de C.V.                                                                         
|                                                                                                                               |  | Other directorships:                                                   |  | Chairman of the Board 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.                                                                                                     



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|                                                                                                                                                |  |                                                   |  |                                                                                                                                            
|----------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                |  |                                                  
|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 2014
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 Operations in Puerto Rico and the United States of America Committee                                                 |  | First elected:Term expires:
Principal occupation: |  | 2005 2014
In retirement                                                                                                                    
|                                                                                                                                                |  | Business experience:                              |  | Chief Executive Officer of the AT&T Diversified Businesses Division and various positions in the wireless industry at SBC Group            
|Jeffrey McElfresh                                                                                                                               |  | Born:                                             |  | 1970                                                                                                                                       
|Director and Member of the Executive Committee                                                                                                  |  | First elected:Term expires:
Principal occupation: |  | 2012 2014
President of AT&T México, Inc.                                                                                                   
|                                                                                                                                                |  | Business experience:                              |  | Various positions at AT&T.                                                                                                                 
|                                                                                                                                                |  |                                                  
|Michael J. Viola                                                                                                                                |  | Born:                                             |  | 1954                                                                                                                                       
|Director                                                                                                                                        |  | First elected:Term expires:
Principal occupation: |  | 2009 2014
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                                                                                         
|                                                                                                                                                |  |                                                  
|Juan Antonio Pérez Simón                                                                                                                        |  | Born:                                             |  | 1941                                                                                                                                       
|Director and Member of the Operations in Puerto Rico and the United States of America Committee                                                 |  | First elected:Term expires:
Principal occupation: |  | 2012 2014
Chairman of the Board and Member of the Executive Committee of Sanborn Hermanos, S.A. de C.V.                                    
|                                                                                                                                                |  | Other directorships:                              |  | Director of Grupo Carso, S.A.B. de C.V., Grupo Financiero Inbursa, S.A.B. de C.V., Sears Operadora México, S.A. de C.V. and Elementia, S.A.
|                                                                                                                                                |  | Business experience:                              |  | Various positions at Grupo Carso, S.A.B. de C.V.                                                                                           



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|                                                                                                                                                         |                       |                                                   |                                        |                                                                                                                                                                                                                                                                                              
|-------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------- | ------------------------------------------------- | -------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                         |                       |                                                  
|Ernesto Vega Velasco                                                                                                                                     |                       | Born:                                             |                                        | 1937                                                                                                                                                                                                                                                                                         
|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: |                                        | 2007 2014
In retirement. Member of the board of directors and audit and corporate practices, planning and finance and evaluation and compensation committees of
certain companies                                                                                                            
|                                                                                                                                                         |                       | Other directorships:                              |                                        | Director of Wal-Mart de México, S.A.B. de C.V., Banco Wal-Mart Adelante, S.A., 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 Alternate Director of Industrias Peñoles, S.A.B. de C.V.
|                                                                                                                                                         |                       | Business experience:                              |                                        | Various positions in Desc Group, including Corporate Vice-president                                                                                                                                                                                                                          
|                                                                                                                                                         |                       |                                                  
|Rafael Moisés Kalach Mizrahi                                                                                                                             |                       | Born:                                             |                                        | 1946                                                                                                                                                                                                                                                                                         
|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: |                                        | 2012 2014
Chairman of the Board and Chief Executive Officer of Grupo Kaltex, S.A. de C.V.,                                                                                                                                                                                                   
|                                                                                                                                                         |                       | Other directorships:                              |                                        | Director of Telmex, Grupo Carso, S.A.B. de C.V. and Sears Roebuck, S.A. de C.V.,                                                                                                                                                                                                             
|                                                                                                                                                         |                       | Business experience:                              |                                        | Various positions in Grupo Kaltex, S.A. de C.V.                                                                                                                                                                                                                                              
|                                                                                                                                                         |                       |                                                  
|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:                       |                                        | 2008 2014                                                                                                                                                                                                                                                                                    
|                                                                                                                                                         | Principal occupation: |                                                   | 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 2014
Head of Strategic Alliances, Communications and Institutional Relations of Telmex; Chief Executive Officer of Fundación Telmex                                                                                                                                                     
|                                                                                                                                                         |                       | Other directorships:                              |                                        | Chairman of the Board of Publicidad y Contenido Editorial, S.A. de C.V., Director of Grupo Sanborns, S.A.B. de C.V., Grupo Carso, S.A.B. de C.V., Sears Operadora México, S.A.
de C.V. and TM&MS LLC                                                                                         
|                                                                                                                                                         |                       | Business experience:                              |                                        | Chief Executive Officer of Sociedad Comercial Cadena, President of Pastelería Francesa (El Globo) and President of Club Universidad Nacional,
A.C.                                                                                                                                           



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|                                                                                                                                                |  |                                                   |  |                                                                                                                                                                                                           
|----------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                                                                                                                                |  |                                                  
|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 2014
Chief Fixed-line Operations Officer of América Móvil                                                                                                                                            
|                                                                                                                                                |  | Other directorships:                              |  | Director of Telmex, Telmex Internacional, Embratel Participações, Net Serviços, Telekom Austria and KPN.                                                                                                  
|                                                                                                                                                |  | Business experience:                              |  | Chief Executive Officer of Telmex Internacional and Chief Systems and Telecommunications Operators Officer of
Telmex                                                                                      
|                                                                                                                                                |  |                                                  
|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 2014
Chief Executive Officer of Philip Morris International                                                                                                                                          
|                                                                                                                                                |  | Other directorships:                              |  | Chairman of the Board 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 2014
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., Acciones y Valores Banamex, S.A., Casa de Bolsa, GE International México, S. de R. L. de C. V. and Sistema Integral de
Abasto Rural, S.A.P.I de C.V.
|                                                                                                                                                |  | 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 2014
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)                                            



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The annual general shareholders meeting held on April 22, 2013, determined that
the following directors are independent: Messrs. Luis Alejandro Soberón Kuri, Ernesto Vega Velasco, Carlos Bremer Gutiérrez, Pablo Roberto González Guajardo, David Ibarra Muñoz, Santiago Cosío Pando, Louis C.
Camilleri, Rayford Wilkins Jr. and Rafael Moisés Kalach Mizrahi.

María José Pérez Simon Carrera
serves as alternate director of Juan Antonio Pérez Simón and was reelected for a one-year term at the annual ordinary general shareholders meeting held on April 22, 2013.

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 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. María José Pérez Simón Carrera is the daughter of Juan Antonio Pérez
Simón.

Two members of our Board of Directors are nominated by AT&T, Inc. (AT&T), pursuant to a
shareholders agreement with our Mexican controlling shareholders. See Major Shareholders under Item 7. Jeffrey McElfresh and Michael J. Viola were nominated by AT&T.

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.

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. See
Major Shareholders under Item 7. The current members of the Executive Committee are Messrs. Carlos Slim Domit, Patrick Slim Domit and Daniel Hajj Aboumrad, named by the Mexican controlling shareholders, and Jeffrey McElfresh, named
by AT&T.

Audit and Corporate Practices Committee

Our Audit and Corporate Practices Committee is comprised of independent members of the Board of Directors. The Audit and Corporate Practices Committee consists of Messrs. Ernesto Vega Velasco (Chairman),
Rafael Moisés Kalach Mizrahi, 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 and pre-approve the scope and terms of their engagement, and determine their compensation;
| | - |  | ----------------------------------------------------------------------------------------------------------------------



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| |  |  | 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;
| | - |  | --------------------------------------------------



| |  |  | 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.
| | - |  | ---------------------------------------------------------------------------------------------------------------



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Under certain circumstances specified in our bylaws, the Audit and Corporate Practices
Committee is required to provide its opinion to the Board of Directors. The Company is required to make public disclosure of any Board action that is inconsistent with the opinion of 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 Exchange Act.

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 all the members of the Board of Directors except for
Messrs. Jeffrey McElfresh and Michael J. Viola. 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 (i) the
Companys Puerto Rican subsidiary, Telpri (including its subsidiaries); (ii) the Companys U.S. subsidiaries, Tracfone (including its subsidiaries), Telmex USA (including its subsidiaries) and Sección Amarilla (including its
subsidiaries); and (iii) any other subsidiary and/or affiliate that the Company may acquire in the future which directly and/or indirectly participates in the same markets in which AT&T, Inc. (directly or through its subsidiaries) currently
participates in the United States of America and Puerto Rico. To perform this function, the Committee may rely on the internal structures of the Company and its subsidiaries.



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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, 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)                                                                                  
|                                    |  |                     
|Alejandro Cantú Jiménez             |  | Appointed:           |  | 2001                                                                                                                                                                                                                                                                 
|General Counsel                     |  | Business experience: |  | Mijares, Angoitia, Cortés y Fuentes, S.C.                                                                                                                                                                                                                            
|                                    |  |                     
|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., Director of Telmex,
Telmex Internacional, Embratel Participacoes, Net Servicos, Telekom Austria and KPN.
|                                    |  |                     
|Angel Alija Guerrero                |  | Appointed:           |  |                                                                                                                                                                                                                                                                      
|Chief Wireless Operations Officer   |  | Business experience: |  | 2012 Various positions in
América Móvil, S.A.B. de C.V.                                                                                                                                                                                                              

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 2012 was approximately Ps.5.4 million and Ps.53 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 323 million (or
1.4%) of our AA Shares and 859 million (or 1.7%) of our L Shares directly. The co-chairman of our Board of Directors, Carlos Slim Domit, holds 647 million (or 2.76%) of our AA Shares and 1,567 million (or 3.1%) of our L Shares
directly. In addition, according to beneficial ownership reports filed with the SEC, Patrick Slim Domit and Carlos Slim Domit are beneficiaries of a trust that owns shares of the company. See Major Shareholders under Item 7 and
BylawsShare Capital under Item 10.

Except as described above, according to 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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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, 2012:



|                      |  |              |         |  |      |  |         |      |  |  |         | 
|--------------------- |  | ------------ | ------- |  | ---- |  | ------- | ---- |  |  | ------- | 
|                      |  | December 31, |        
|                      |  | 2010         |         |  | 2011 |  |         | 2012 | 
|Number of employees   |  |              | 150,079 |  |      |  | 158,694 |      |  |  | 158,719 | 
|                      |  |              |        
|Category of activity: |  |              |         |  |      |  |         |      |  |  |         | 
|Wireless              |  |              | 46,072  |  |      |  | 51,114  |      |  |  | 54,794  | 
|Fixed                 |  |              | 104,007 |  |      |  | 107,580 |      |  |  | 103,925 | 
|                      |  |              |        
|Geographic location:  |  |              |         |  |      |  |         |      |  |  |         | 
|Mexico                |  |              | 70,917  |  |      |  | 72,214  |      |  |  | 71,838  | 
|South America         |  |              | 60,626  |  |      |  | 67,441  |      |  |  | 66,776  | 
|Central America       |  |              | 8,119   |  |      |  | 8,486   |      |  |  | 9,241   | 
|Caribbean             |  |              | 9,742   |  |      |  | 9,820   |      |  |  | 10,074  | 
|United States         |  |              | 675     |  |      |  | 733     |      |  |  | 790     | 

Many of our employees are members of labor unions, with which we conduct collective negotiations on
wages, benefits and working conditions. 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 March 31, 2013.



|                         |  |                           |        |  |                   |  |       |                                 |  |  |       |  
|------------------------ |  | ------------------------- | ------ |  | ----------------- |  | ----- | ------------------------------- |  |  | ----- | -
|Series                   |  | Number ofShares(millions) |        |  | Percent ofCapital |  |       | CombinedA Sharesand
AAShares(*) | 
|L Shares (no par value)  |  |                           | 50,303 |  |                   |  | 67.58 | %                               |  |  |      |  
|AA Shares (no par value) |  |                           | 23,424 |  |                   |  | 31.47 | %                               |  |  | 97.08 | %
|A Shares (no par value)  |  |                           | 704    |  |                   |  | 0.95  | %                               |  |  | 2.92  | %
|                         |  |                           |        |  |                   |  |       |                                 |  |  |       |  
|Total                    |  |                           | 74,431 |  |                   |  | 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, the Slim Family may be deemed to control us through their interests in a Mexican trust that holds AA Shares and L Shares for their benefit (the Family Trust), their interest in
Inmobiliaria Carso, and their direct ownership of our 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 March 31, 2012. 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.



|                      |  |                       |        |  |                |  |      |  
|--------------------- |  | --------------------- | ------ |  | -------------- |  | ---- | -
|Shareholder           |  | SharesOwned(millions) |        |  | PercentofClass | 
|AA Shares:            |  |                       |        |  |                |  |      |  
|Family Trust(1)       |  |                       | 10,894 |  |                |  | 46.5 | %
|AT&T Inc.(2)          |  |                       | 5,739  |  |                |  | 24.5 | %
|Inmobiliaria Carso(3) |  |                       | 1,392  |  |                |  | 5.9  | %
|                      |  |                      
|L Shares:             |  |                       |        |  |                |  |      |  
|Family Trust(1)       |  |                       | 5,998  |  |                |  | 11.4 | %
|BlackRock, Inc.(4)    |  |                       | 3,816  |  |                |  | 7.4  | %



|(1) | Based on beneficial ownership reports filed with the SEC, the Family Trust is a Mexican trust which holds AA Shares and L Shares for the benefit of the members of the
Slim Family. In addition to shares held by the Family Trust, members of the Slim Family, including Carlos Slim Helú, directly own an aggregate of 3,558 million AA Shares and 9,570 million L Shares representing 7.07% and 18.93%,
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. AT&T also owned approximately 1,504 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.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|(3) | Based on beneficial ownership reports filed with the SEC Inmobiliaria Carso, S.A. de C.V. is a sociedad anónima de capital variable organized under the
laws of Mexico controlled indirectly by the Slim Family. Percentage figures are based on the number of shares outstanding as of the date of the most recently filed beneficial ownership report.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(4) | Based on beneficial ownership reports filed with the SEC. Percentage figures are based on the number of shares outstanding as of the date of the most recently filed
beneficial ownership report.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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., 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. 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, in the event the Family Trust
sells a majority of its AA Shares to a third party (i) gives AT&TI the right 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) gives the Family
Trust the right 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. These 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 gives AT&TI the right to nominate two candidates to our Board of Directors and to appoint one member to our Executive Committee.

As of March 31, 2013, 25.4% of the outstanding L Shares were represented by L Share ADSs, each representing the right to receive 20
L Shares, and 96.2% of the L Share ADSs were held by 10,095 registered holders with addresses in the United States. As of such date, 32.3% of the A Shares were held in the form of A Share ADSs, each representing the right to receive 20 A Shares, and
91.7% of the A Share ADSs were held by 4,369 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.
| | - |  | ---------------------------------



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RELATED PARTY TRANSACTIONS

We receive consulting services from AT&T, which is one of our major shareholders, pursuant to a management services agreement and
amendments covering successive periods. The most recent amendment covered 2012, and we expect to agree on an amendment covering 2013. We paid U.S.$10 million in 2012 and U.S.$10 million in 2011, respectively, to AT&T in compensation for its
services. We also have agreements with AT&T International and its affiliates that provide for the completion of calls in our respective countries of operation.

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 subsidiaries of Grupo Carso. Our subsidiaries purchase these materials and services on terms no less favorable than they 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 revolving credit agreement with our affiliate Banco Inbursa, S.A., Institución de Banca Múltiple, Grupo Financiero Inbursa. The agreement provides a line of credit to us and/or our subsidiaries for up to
U.S.$400 million, of which U.S.$100 million is outstanding.

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-81.

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. The figures presented below, for all periods, have been adjusted to reflect the two-for-one stock split effected in 2011.



|                  |  |                 |         |  |                  |       |        | 
|----------------- |  | --------------- | ------- |  | ---------------- | ----- | ------ | 
|Payment Date      |  | Pesos per Share |         |  | Dollars perShare |      
|November 16, 2012 |  |                 | Ps.0.10 |  |                  | U.S.$ | 0.0077 | 
|July 20, 2012     |  |                 | Ps.0.10 |  |                  | U.S.$ | 0.0077 | 
|November 18, 2011 |  |                 | Ps.0.09 |  |                  | U.S.$ | 0.0065 | 
|July 22, 2011     |  |                 | Ps.0.09 |  |                  | U.S.$ | 0.0077 | 
|November 19, 2010 |  |                 | Ps.0.08 |  |                  | U.S.$ | 0.0065 | 
|July 23, 2010     |  |                 | Ps.0.08 |  |                  | U.S.$ | 0.0063 | 

In April 2013, our shareholders approved a dividend of Ps.0.22 per share, payable in two equal
installments in July and November 2013. 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. We are party to a number of proceedings regarding our compliance with
administrative rules and regulations and concession standards.

Our material legal proceedings are described in Note 17 to our
audited consolidated financial statements included in this annual report and in Regulation under Item 4, and those descriptions are 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 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. Prices for all periods have been adjusted to reflect the two-for-one stock split effected in June 2011.



|                         |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|------------------------ |  | --------------------- | -------- |  | ------------------------------ |  | -------- | ---- |  | ----- | ----- |  |  | ----- | ----- | 
|                         |  | Mexican StockExchange |          |  | NYSE                           | 
|                         |  | High                  |          |  | Low                            |  |          | High |  |       | Low   | 
|                         |  | (pesos per L Share)   |          |  | (U.S. dollars per L Share ADS) | 
|Annual highs and lows    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2008                     |  |                       | Ps.17.55 |  |                                |  | Ps.8.15  |      |  | U.S.$ | 33.38 |  |  | U.S.$ | 11.82 | 
|2009                     |  |                       | 16.00    |  |                                |  | 9.16     |      |  |       | 24.85 |  |  |       | 11.83 | 
|2010                     |  |                       | 18.15    |  |                                |  | 13.84    |      |  |       | 29.74 |  |  |       | 21.47 | 
|2011                     |  |                       | 19.09    |  |                                |  | 13.67    |      |  |       | 26.42 |  |  |       | 21.10 | 
|2012                     |  |                       | 18.35    |  |                                |  | 14.79    |      |  |       | 28.28 |  |  |       | 22.19 | 
|                         |  |                       |          | 
|Quarterly highs and lows |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2011:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.18.09 |  |                                |  | Ps.16.17 |      |  | U.S.$ | 29.50 |  |  | U.S.$ | 26.82 | 
|Second quarter           |  |                       | 17.42    |  |                                |  | 14.19    |      |  |       | 29.50 |  |  |       | 24.05 | 
|Third quarter            |  |                       | 15.87    |  |                                |  | 13.67    |      |  |       | 27.04 |  |  |       | 21.10 | 
|Fourth quarter           |  |                       | 17.53    |  |                                |  | 14.53    |      |  |       | 26.42 |  |  |       | 21.50 | 
|2012:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.15.99 |  |                                |  | Ps.14.79 |      |  | U.S.$ | 24.83 |  |  | U.S.$ | 22.19 | 
|Second quarter           |  |                       | 18.35    |  |                                |  | 15.49    |      |  |       | 28.25 |  |  |       | 22.72 | 
|Third quarter            |  |                       | 18.02    |  |                                |  | 16.24    |      |  |       | 27.51 |  |  |       | 25.06 | 
|Fourth quarter           |  |                       | 16.96    |  |                                |  | 14.81    |      |  |       | 26.54 |  |  |       | 22.77 | 
|2013:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.16.19 |  |                                |  | Ps.11.60 |      |  | U.S.$ | 25.51 |  |  | U.S.$ | 18.51 | 
|                         |  |                       |          | 
|Monthly highs and lows   |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2012:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|November                 |  |                       | Ps.16.67 |  |                                |  | Ps.15.27 |      |  | U.S.$ | 26.23 |  |  | U.S.$ | 23.19 | 
|December                 |  |                       | 15.32    |  |                                |  | 14.81    |      |  |       | 23.87 |  |  |       | 22.77 | 
|2013:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|January                  |  |                       | Ps.15.98 |  |                                |  | Ps.14.90 |      |  | U.S.$ | 25.05 |  |  | U.S.$ | 23.33 | 
|February                 |  |                       | 16.19    |  |                                |  | 13.32    |      |  |       | 25.62 |  |  |       | 20.83 | 
|March                    |  |                       | 13.60    |  |                                |  | 11.60    |      |  |       | 21.12 |  |  |       | 18.51 | 
|April (through April 28) |  |                       | 13.17    |  |                                |  | 12.05    |      |  |       | 21.38 |  |  |       | 19.62 | 



Source:
Bloomberg



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The table below sets forth 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. Prices for all periods have been
adjusted to reflect the two-for-one stock split effected in June 2011.



|                         |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|------------------------ |  | --------------------- | -------- |  | ------------------------------ |  | -------- | ---- |  | ----- | ----- |  |  | ----- | ----- | 
|                         |  | Mexican StockExchange |          |  | NASDAQ                         | 
|                         |  | High                  |          |  | Low                            |  |          | High |  |       | Low   | 
|                         |  | (pesos per A Share)   |          |  | (U.S. dollars per A Share ADS) | 
|Annual highs and lows    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2008                     |  |                       | Ps.17.75 |  |                                |  | Ps.8.00  |      |  | U.S.$ | 33.20 |  |  | U.S.$ | 12.02 | 
|2009                     |  |                       | 16.05    |  |                                |  | 8.96     |      |  |       | 24.74 |  |  |       | 11.72 | 
|2010                     |  |                       | 18.00    |  |                                |  | 14.00    |      |  |       | 29.84 |  |  |       | 21.51 | 
|2011                     |  |                       | 18.03    |  |                                |  | 13.14    |      |  |       | 29.56 |  |  |       | 20.88 | 
|2012                     |  |                       | 18.46    |  |                                |  | 14.01    |      |  |       | 28.08 |  |  |       | 21.33 | 
|                         |  |                       |          | 
|Quarterly highs and lows |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2011:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.18.03 |  |                                |  | Ps.16.25 |      |  | U.S.$ | 29.56 |  |  | U.S.$ | 26.76 | 
|Second quarter           |  |                       | 17.25    |  |                                |  | 14.20    |      |  |       | 29.45 |  |  |       | 24.03 | 
|Third quarter            |  |                       | 15.79    |  |                                |  | 13.14    |      |  |       | 27.00 |  |  |       | 20.93 | 
|Fourth quarter           |  |                       | 17.48    |  |                                |  | 14.53    |      |  |       | 26.30 |  |  |       | 20.88 | 
|2012:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.16.01 |  |                                |  | Ps.14.71 |      |  | U.S.$ | 24.86 |  |  | U.S.$ | 21.33 | 
|Second quarter           |  |                       | 18.07    |  |                                |  | 15.30    |      |  |       | 28.08 |  |  |       | 22.74 | 
|Third quarter            |  |                       | 18.46    |  |                                |  | 16.20    |      |  |       | 27.43 |  |  |       | 24.29 | 
|Fourth quarter           |  |                       | 17.00    |  |                                |  | 14.01    |      |  |       | 26.60 |  |  |       | 22.66 | 
|2013:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|First quarter            |  |                       | Ps.16.00 |  |                                |  | Ps.11.60 |      |  | U.S.$ | 25.55 |  |  | U.S.$ | 18.56 | 
|                         |  |                       |          | 
|Monthly highs and lows   |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|2012:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|November                 |  |                       | Ps.16.51 |  |                                |  | Ps.15.06 |      |  | U.S.$ | 26.38 |  |  | U.S.$ | 23.17 | 
|December                 |  |                       | 15.27    |  |                                |  | 14.01    |      |  |       | 23.80 |  |  |       | 22.66 | 
|2013:                    |  |                       |          |  |                                |  |          |      |  |       |       |  |  |       |       | 
|January                  |  |                       | Ps.16.00 |  |                                |  | Ps.14.90 |      |  | U.S.$ | 25.06 |  |  | U.S.$ | 23.30 | 
|February                 |  |                       | 16.00    |  |                                |  | 13.40    |      |  |       | 28.08 |  |  |       | 20.72 | 
|March                    |  |                       | 13.40    |  |                                |  | 11.60    |      |  |       | 21.42 |  |  |       | 18.56 | 
|April (through April 28) |  |                       | 13.05    |  |                                |  | 12.24    |      |  |       | 21.34 |  |  |       | 19.82 | 



Source:
Bloomberg



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

BYLAWS

Set forth below is a brief summary of certain significant provisions in 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.

Corporate 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.

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 two-for-one stock split which became effective in June 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 to
elect only two members of the Board of Directors and the corresponding alternate directors as well as 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 authorized corporate life;
| | - |  | -----------------------------------------------



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



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



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



| |  |  | any 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 reelection 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 reelect directors and to determine the allocation of the profits
of the preceding year. Transactions that represent 20% or more of our consolidated assets in any fiscal year must be approved by an ordinary general shareholder meeting of all shareholders, including holders of L Shares.

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



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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.

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.

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.

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.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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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 the capital stock may only be held or acquired by (i) Mexican citizens or (ii) Mexican
corporations;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | 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.

Our bylaws (estatutos sociales) were amended in 2010 to add a provision called a foreign exclusion clause. Under the
foreign exclusion clause, ownership of América Móvil shares is restricted to holders that qualify as



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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.

Restrictions on Deregistration in Mexico

Our shares are registered with the RNV 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.

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.



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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.

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 Exchange Act, 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,



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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

A number of our subsidiaries
and affiliates hold concessions and licenses granted by regulatory authorities in the countries in which they operate. See Regulation under Item 4.

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 advisors 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.



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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.

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.



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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 advisors 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.

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



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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 with respect to the shares or ADSs will be subject to taxation at reduced rates if the dividends are qualified dividends. Dividends paid on the shares or ADSs will be treated
as qualified dividends if (i) (A) the shares or ADSs are readily tradable on an established securities market in the United States, or (B) we are eligible for the benefits of a comprehensive tax treaty with the United States which the
U.S. Treasury determines is satisfactory for purposes of this provision and which includes an exchange of information program, 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 the NASDAQ Global Market, and will qualify as readily tradable on an established securities market in the
United States so long as they are so listed. In addition, the U.S. Treasury has determined that the Tax Treaty meets the requirements for reduced rates of taxation, and we believe we are eligible for the benefits of the Tax Treaty. 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 2011 or 2012 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 2013 taxable
year. In addition, the U.S. Treasury has announced its intention to promulgate rules pursuant to which holders of ADSs or common stock and intermediaries through 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



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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 timely furnished to the Service.

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 w) to our audited consolidated financial statements for disclosures about market risk.



|Item 12. | Description of Securities Other than Equity Securities
|-------- | ------------------------------------------------------

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. During the year ended December 31, 2012, the Depositary did not make
any payments to us for reimbursable expenses.



|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, 2012. 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 Exchange Act. 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, 2012.

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 April 22, 2013.

(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 Shareholders 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, 2012, 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 (IFRS). 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 IFRS, 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, 2011, 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 December 31, 2011 and 2012
and the related consolidated statements of comprehensive income, changes in equity and cash flows for each of the three years in the period ended December 31, 2012, and our report dated April 22, 2013, expressed an unqualified opinion
thereon.



Mancera, S.C. A member
practice of Ernst & Young Global/S/ OMERO CAMPOS SEGURAOmero Campos Segura


Mexico City

April 22, 2013



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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 2012 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 Ernesto Vega Velasco qualifies as an audit committee financial expert, and Mr. Vega Velasco is independent under the definition of independence
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 Exchange Act. 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, 2011 and 2012:



|                   |  |                                |     |  |      |     |     | 
|------------------ |  | ------------------------------ | --- |  | ---- | --- | --- | 
|                   |  | Year ended December 31,        |    
|                   |  | 2011                           |     |  | 2012 |    
|                   |  | (in millions of Mexican pesos) |    
|Audit fees         |  | Ps.                            | 125 |  |      | Ps. | 143 | 
|Audit-related fees |  |                                | 17  |  |      |     | 24  | 
|Tax fees           |  |                                | 11  |  |      |     | 9   | 
|All other fees     |  |                                |    |  |      |     |    | 
|                   |  |                                |     |  |      |     |     | 
|Total fees         |  | Ps.                            | 153 |  |      | Ps. | 176 | 
|                   |  |                                |     |  |      |     |     | 

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 service that
requires specific pre-approval, our independent auditor, together



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with our chief financial officer (or in certain situations our chief financial officer alone after discussing the services with our independent auditor) present to the audit committee a request
for approval of audit services in which such person or persons confirm that the request complies with the applicable rules.



|Item 16D. | 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 22, 2013, our shareholders authorized an aggregate Ps.40,000 million increase in the amount we are authorized to spend to repurchase L Shares and A Shares, raising the available amount to
Ps.68,599 million.

The following tables set out information concerning purchases of our L Shares and A Shares by us and our
affiliated purchasers in 2012. We did not repurchase our L Shares or A Shares other than through the share repurchase program.



|               |  |                                  |               |  |                              |  |       |                                                                               |  |  |                                                                                        |  |  |  |                | 
|-------------- |  | -------------------------------- | ------------- |  | ---------------------------- |  | ----- | ----------------------------------------------------------------------------- |  |  | -------------------------------------------------------------------------------------- |  |  |  | -------------- | 
|Period         |  | Total Numberof L SharesPurchased |               |  | Average PricePaid per LShare |  |       | Total Numberof L SharesPurchased asPart of PubliclyAnnounced Plansor
Programs |  |  | Approximate PesoValue of L Sharesthat May Yet BePurchased Underthe Plans
orPrograms(1) | 
|January 2012   |  |                                  | 59,759,900    |  |                              |  | 15.39 |                                                                               |  |  | 59,759,900                                                                             |  |  |  | 39,939,189,755 | 
|February 2012  |  |                                  | 199,097,989   |  |                              |  | 15.19 |                                                                               |  |  | 194,097,989                                                                            |  |  |  | 36,986,169,772 | 
|March 2012     |  |                                  | 204,909,426   |  |                              |  | 15.29 |                                                                               |  |  | 204,909,426                                                                            |  |  |  | 33,853,220,508 | 
|April 2012     |  |                                  | 82,811,089    |  |                              |  | 16.01 |                                                                               |  |  | 82,811,089                                                                             |  |  |  | 62,524,004,609 | 
|May 2012       |  |                                  | 191,557,555   |  |                              |  | 17.01 |                                                                               |  |  | 165,407,555                                                                            |  |  |  | 59,710,361,503 | 
|June 2012      |  |                                  | 87,471,655    |  |                              |  | 16.91 |                                                                               |  |  | 87,471,655                                                                             |  |  |  | 58,188,837,748 | 
|July 2012      |  |                                  | 64,178,000    |  |                              |  | 17.62 |                                                                               |  |  | 64,178,000                                                                             |  |  |  | 57,057,774,170 | 
|August 2012    |  |                                  | 37,011,913    |  |                              |  | 17.07 |                                                                               |  |  | 37,011,913                                                                             |  |  |  | 56,424,309,271 | 
|September 2012 |  |                                  | 31,545,046    |  |                              |  | 16.51 |                                                                               |  |  | 31,545,046                                                                             |  |  |  | 55,897,655,997 | 
|October 2012   |  |                                  | 33,731,114    |  |                              |  | 16.73 |                                                                               |  |  | 33,731,114                                                                             |  |  |  | 55,327,761,090 | 
|November 2012  |  |                                  | 71,944,418    |  |                              |  | 15.44 |                                                                               |  |  | 42,421,000                                                                             |  |  |  | 54,664,654,787 | 
|December 2012  |  |                                  | 144,718,238   |  |                              |  | 14.89 |                                                                               |  |  | 143,168,004                                                                            |  |  |  | 52,530,870,574 | 
|               |  |                                  |               |  |                              |  |       |                                                                               |  |  |                                                                                        |  |  |  |                | 
|Total/Average  |  |                                  | 1,208,736,343 |  |                              |  | 15.93 |                                                                               |  |  | 1,146,512,691                                                                          |  |  |  |                | 
|               |  |                                  |               |  |                              |  |       |                                                                               |  |  |                                                                                        |  |  |  |                | 



|(1) | 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.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------



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|               |  |                                  |           |  |                              |  |       |                                                                               |  |  |                                                                                        |  |  |  |                | 
|-------------- |  | -------------------------------- | --------- |  | ---------------------------- |  | ----- | ----------------------------------------------------------------------------- |  |  | -------------------------------------------------------------------------------------- |  |  |  | -------------- | 
|Period         |  | Total Numberof A
SharesPurchased |           |  | Average PricePaid per
AShare |  |       | Total Numberof A SharesPurchased asPart of PubliclyAnnounced Plansor
Programs |  |  | Approximate PesoValue of A Sharesthat May Yet BePurchasedUnder the
Plansor Programs(1) | 
|January 2012   |  |                                  | 240,100   |  |                              |  | 15.47 |                                                                               |  |  | 240,100                                                                                |  |  |  | 39,939,189,755 | 
|February 2012  |  |                                  | 239,100   |  |                              |  | 15.24 |                                                                               |  |  | 239,100                                                                                |  |  |  | 36,986,169,772 | 
|March 2012     |  |                                  | 40,574    |  |                              |  | 15.10 |                                                                               |  |  | 40,574                                                                                 |  |  |  | 33,853,220,508 | 
|April 2012     |  |                                  | 188,911   |  |                              |  | 16.90 |                                                                               |  |  | 188,911                                                                                |  |  |  | 62,524,004,609 | 
|May 2012       |  |                                  | 230,356   |  |                              |  | 16.96 |                                                                               |  |  | 230,356                                                                                |  |  |  | 59,710,361,503 | 
|June 2012      |  |                                  | 2,528,345 |  |                              |  | 16.61 |                                                                               |  |  | 2,528,345                                                                              |  |  |  | 58,188,837,748 | 
|July 2012      |  |                                  | 10,615    |  |                              |  | 17.80 |                                                                               |  |  | 10,390                                                                                 |  |  |  | 57,057,774,170 | 
|August 2012    |  |                                  | 88,087    |  |                              |  | 17.20 |                                                                               |  |  | 88,087                                                                                 |  |  |  | 56,424,309,271 | 
|September 2012 |  |                                  | 354,954   |  |                              |  | 16.58 |                                                                               |  |  | 354,954                                                                                |  |  |  | 55,897,655,997 | 
|October 2012   |  |                                  | 339,196   |  |                              |  | 16.72 |                                                                               |  |  | 338,886                                                                                |  |  |  | 55,327,761,090 | 
|November 2012  |  |                                  | 79,000    |  |                              |  | 15.58 |                                                                               |  |  | 79,000                                                                                 |  |  |  | 54,664,654,787 | 
|December 2012  |  |                                  | 148,606   |  |                              |  | 15.01 |                                                                               |  |  | 148,606                                                                                |  |  |  | 52,530,870,574 | 
|               |  |                                  |           |  |                              |  |       |                                                                               |  |  |                                                                                        |  |  |  |                | 
|Total/Average  |  |                                  | 4,487,844 |  |                              |  | 16.44 |                                                                               |  |  | 4,487,309                                                                              |  |  |  |                | 
|               |  |                                  |           |  |                              |  |       |                                                                               |  |  |                                                                                        |  |  |  |                | 



|(1) | 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.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------



|Item 16F. | 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 both 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 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.
 As a controlled company, we would be exempt from this requirement if we were a
U.S. issuer. |  | 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 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 company, rather than the public. Rules 5605(b)(1), 5615(c)(1) and (c)(2). |  | 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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                                                                                                                                                                                                                                                                                                                                                                                                     |  | As a controlled company, we would be exempt from this requirement if we were a U.S. issuer.                                                                                                                                                                                                                                                                                                                                                                                                                                                               |  | no exemption from the independence requirement for controlled companies.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|                                                                                                                                                                                                                                                                                                                                                                                                                                     |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|Executive Sessions.    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.  As a controlled company, we would be exempt from
this requirement if we were a U.S. issuer. |  | 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). 
As a controlled company, we would be exempt from this requirement if we were a U.S. issuer. |  | 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.



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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.  As a controlled
company, we would be exempt from this requirement if we were a U.S. issuer. |  | 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).
 As a controlled company, we would be exempt from this requirement if we were a
U.S. issuer. |  | 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.



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|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                                                                                                                                                                                                                                                                                                                                                                   |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NYSE Standards                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  | NASDAQ Standards                                                                                                                                                                                                                                                                                                                                                  |  | Our Corporate Governance Practices                                                                                                                                                                                                                                                                                                                                                                                                                                                        
|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.                                                                                                                                                                                                                                           
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                                                                                                                                                                                                                                                                                                                                                                  
|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.



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|                                                                                                                                                                                                                        |  |                                                                                                                                                                                                                    |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|NYSE Standards                                                                                                                                                                                                          |  | NASDAQ Standards                                                                                                                                                                                                   |  | Our Corporate Governance Practices                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|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 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 16H. | Not Applicable
|--------- | --------------



|Item 17. | Not Applicable
|-------- | --------------



|Item 18. | Financial Statements
|-------- | --------------------

See pages F-1 through F-81 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 June 14, 2011 (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 April 30, 2012).                                                                                                                                                                                                                                                          
|     | 
|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  |  | Twelfth Amendment dated July 12, 2012 to Management Services Agreement dated February 27, 2002 between AT&T Mexico, LLC, and América Móvil, S.A.B. de
C.V.                                                                                                                                                                                                                                                                                                                                                                              
|     | 
|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: April 29, 2013



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-3 | 
|                                                                                                       | 
|Consolidated Statements of Financial Position as of December 31, 2011 and
2012                         |  |      | F-4 | 
|                                                                                                       | 
|Consolidated Statements of Comprehensive Income for the years ended December 
31, 2010, 2011 and 2012  |  |      | F-5 | 
|                                                                                                       | 
|Consolidated Statements of Changes in Equity for the years ended December 
31, 2010, 2011 and 2012     |  |      | F-6 | 
|                                                                                                       | 
|Consolidated Statements of Changes in Cash Flows for the years ended December 
31, 2010, 2011 and 2012 |  |      | F-7 | 
|                                                                                                       | 
|Notes to the Audited Consolidated Financial Statements                                                 |  |      | F-8 | 



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AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Financial Statements

For the years ended December 31, 2010, 2011 and 2012

with Report of
Independent Registered Public Accounting Firm



F-1



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##### Table of Contents

AMÉRICA MÓVIL, S.A.B. DE C.V. AND SUBSIDIARIES

Consolidated Financial Statements

For the years ended December 31, 2010, 2011 and 2012

Contents:

Report of Independent Registered Public Accounting Firm

Audited Consolidated Financial Statements:

Consolidated Statements of Financial Position

Consolidated Statements of Comprehensive Income

Consolidated Statements of Changes in Equity

Consolidated Statements of Cash Flows

Notes to Consolidated Financial Statements



F-2



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##### Table of Contents

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 December 31, 2011 and 2012 and the related consolidated statements of comprehensive income, changes in equity and cash flows for each of
three years in the period ended December 31, 2012. 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 December 31, 2011 and 2012, and the consolidated results of their operations and their cash flows for each of the three years in the period ended
December 31, 2012, 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, 2012, based on criteria established in Internal ControlIntegrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated
April 22, 2013, expressed an unqualified opinion thereon.



Mancera, S.C.A member practice ofErnst & Young Global/s/ Omero Campos Segura
C.P.C. Omero Campos Segura


Mexico City, Mexico

April 22, 2013



F-3



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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 December 31, |             |  | Millions ofU.S.
dollars2012 |    
|                                                                |  | 2011            |             |  | 2012                        |     |              
|Assets                                                          |  |                 |             |  |                             |     |               |   |  |     |        |  
|Current assets:                                                 |  |                 |             |  |                             |     |               |   |  |     |        |  
|Cash and cash equivalents (Note 4)                              |  | Ps.             | 59,123,996  |  |                             | Ps. | 45,487,200    |   |  | US$ | 3,496  |  
|Accounts receivable, net (Note 5)                               |  |                 | 124,973,353 |  |                             |     | 120,205,954   |   |  |     | 9,239  |  
|Derivative financial instruments (Note 11)                      |  |                 | 9,793,836   |  |                             |     | 2,779,749     |   |  |     | 214    |  
|Related parties (Note 18)                                       |  |                 | 3,413,899   |  |                             |     | 689,053       |   |  |     | 53     |  
|Inventories, net (Note 6)                                       |  |                 | 34,141,317  |  |                             |     | 28,697,820    |   |  |     | 2,206  |  
|Other current assets, net (Note 7)                              |  |                 | 10,846,749  |  |                             |     | 11,271,463    |   |  |     | 866    |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Total current assets                                            |  |                 | 242,293,150 |  |                             |     | 209,131,239   |   |  |     | 16,074 |  
|                                                                |  |                 |            
|Non-current assets:                                             |  |                 |             |  |                             |     |               |   |  |     |        |  
|Property, plant and equipment, net (Note 8)                     |  |                 | 466,086,773 |  |                             |     | 500,434,272   |   |  |     | 38,465 |  
|Licenses and rights of use, net (Note 9)                        |  |                 | 38,530,899  |  |                             |     | 44,052,430    |   |  |     | 3,386  |  
|Trademarks, net (Note 9)                                        |  |                 | 3,006,854   |  |                             |     | 1,143,315     |   |  |     | 88     |  
|Goodwill (Note 9)                                               |  |                 | 73,038,433  |  |                             |     | 99,705,859    |   |  |     | 7,664  |  
|Investment in associated companies (Note 10)                    |  |                 | 54,218,023  |  |                             |     | 73,116,285    |   |  |     | 5,620  |  
|Deferred taxes (Note 20)                                        |  |                 | 33,074,458  |  |                             |     | 33,996,070    |   |  |     | 2,613  |  
|Pension asset (Note 12)                                         |  |                 | 22,327,733  |  |                             |     | 26,589,389    |   |  |     | 2,044  |  
|Other non-current assets, net (Note 7)                          |  |                 | 15,056,421  |  |                             |     | 15,729,154    |   |  |     | 1,209  |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Total assets                                                    |  | Ps.             | 947,632,744 |  |                             | Ps. | 1,003,898,013 |   |  | US$ | 77,163 |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Liabilities and equity                                          |  |                 |             |  |                             |     |               |   |  |     |        |  
|Current liabilities:                                            |  |                 |             |  |                             |     |               |   |  |     |        |  
|Short-term debt and current portion of long-term debt (Note 16) |  | Ps.             | 26,643,315  |  |                             | Ps. | 13,621,806    |   |  | US$ | 1,047  |  
|Accounts payable and accrued liabilities (Note 13)              |  |                 | 178,740,455 |  |                             |     | 184,056,080   |   |  |     | 14,148 |  
|Taxes payable                                                   |  |                 | 28,622,319  |  |                             |     | 24,944,133    |   |  |     | 1,917  |  
|Derivative financial instruments (Note 11)                      |  |                 | 2,889,281   |  |                             |     | 5,025,047     |   |  |     | 386    |  
|Related parties (Note 18)                                       |  |                 | 1,630,265   |  |                             |     | 1,254,672     |   |  |     | 96     |  
|Deferred revenues (Note 15)                                     |  |                 | 26,248,679  |  |                             |     | 23,956,939    |   |  |     | 1,841  |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Total current liabilities                                       |  |                 | 264,774,314 |  |                             |     | 252,858,677   |   |  |     | 19,435 |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Long-term debt (Note 16)                                        |  |                 | 353,975,487 |  |                             |     | 404,048,282   |   |  |     | 31,057 |  
|Deferred taxes (Note 20)                                        |  |                 | 16,751,716  |  |                             |     | 21,231,775    |   |  |     | 1,632  |  
|Deferred revenues (Note 15)                                     |  |                 | 3,175,796   |  |                             |     | 1,100,195     |   |  |     | 85     |  
|Employee benefits (Note 12)                                     |  |                 | 13,315,736  |  |                             |     | 12,335,707    |   |  |     | 948    |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Total liabilities                                               |  |                 | 651,993,049 |  |                             |     | 691,574,636   |   |  |     | 53,157 |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Equity (Note 19):                                               |  |                 |             |  |                             |     |               |   |  |     |        |  
|Capital stock                                                   |  |                 | 96,419,636  |  |                             |     | 96,414,841    |   |  |     | 7,411  |  
|Retained earnings:                                              |  |                 |             |  |                             |     |               |   |  |     |        |  
|Prior years                                                     |  |                 | 81,198,952  |  |                             |     | 121,679,111   |   |  |     | 9,353  |  
|Profit for the period                                           |  |                 | 82,853,529  |  |                             |     | 91,440,880    |   |  |     | 7,028  |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Total retained earnings                                         |  |                 | 164,052,481 |  |                             |     | 213,119,991   |   |  |     | 16,381 |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Other comprehensive income items                                |  |                 | 25,168,067  |  |                             |     | (7,737,017    | ) |  |     | (595   | )
|Equity attributable to equity holders of the parent             |  |                 | 285,640,184 |  |                             |     | 301,797,815   |   |  |     | 23,197 |  
|Non-controlling interests                                       |  |                 | 9,999,511   |  |                             |     | 10,525,562    |   |  |     | 809    |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Total equity                                                    |  |                 | 295,639,695 |  |                             |     | 312,323,377   |   |  |     | 24,006 |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  
|Total liabilities and equity                                    |  | Ps.             | 947,632,744 |  |                             | Ps. | 1,003,898,013 |   |  | US$ | 77,163 |  
|                                                                |  |                 |             |  |                             |     |               |   |  |     |        |  

The accompanying notes are an integral part of these financial statements.



F-4



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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 |             |   | Millions of U.S.dollars, exceptfor earningsper share2012 |    
|                                                                                                                                                                                                                                    |  | 2010                           |             |   | 2011                                                     |     |             | 2012 |  |    
|Operating revenues:                                                                                                                                                                                                                 |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Mobile voice services                                                                                                                                                                                                               |  | Ps.                            | 268,030,881 |   |                                                          | Ps. | 281,952,808 |      |  | Ps. | 287,133,858  |   |  | US$ | 22,070 |  
|Fixed voice services                                                                                                                                                                                                                |  |                                | 140,178,225 |   |                                                          |     | 139,219,344 |      |  |     | 123,778,159  |   |  |     | 9,514  |  
|Mobile data voice services                                                                                                                                                                                                          |  |                                | 76,954,735  |   |                                                          |     | 102,190,374 |      |  |     | 136,394,772  |   |  |     | 10,484 |  
|Fixed data services                                                                                                                                                                                                                 |  |                                | 66,015,070  |   |                                                          |     | 72,007,127  |      |  |     | 83,628,831   |   |  |     | 6,428  |  
|Paid television                                                                                                                                                                                                                     |  |                                | 9,484,920   |   |                                                          |     | 16,958,846  |      |  |     | 56,520,982   |   |  |     | 4,344  |  
|Other services                                                                                                                                                                                                                      |  |                                | 69,225,498  |   |                                                          |     | 77,637,813  |      |  |     | 87,613,043   |   |  |     | 6,734  |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|                                                                                                                                                                                                                                    |  |                                | 629,889,329 |   |                                                          |     | 689,966,312 |      |  |     | 775,069,645  |   |  |     | 59,574 |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Operating costs and expenses:                                                                                                                                                                                                       |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Cost of sales and services                                                                                                                                                                                                          |  |                                | 253,449,142 |   |                                                          |     | 290,902,040 |      |  |     | 343,446,139  |   |  |     | 26,398 |  
|Commercial, administrative and general expenses                                                                                                                                                                                     |  |                                | 129,440,598 |   |                                                          |     | 147,115,441 |      |  |     | 167,148,944  |   |  |     | 12,848 |  
|Other expenses                                                                                                                                                                                                                      |  |                                | 3,606,853   |   |                                                          |     | 3,176,328   |      |  |     | 3,579,638    |   |  |     | 275    |  
|Depreciation and amortization (Notes 8 and 9)
(includes Ps.63,749,928, Ps.67,797,929 and Ps.72,509,321 corresponding to the years ended December 31, 2010,
2011 and 2012, respectively, not included in cost of sales and services) |  |                                | 91,071,327  |   |                                                          |     | 93,997,035  |      |  |     | 103,584,737  |   |  |     | 7,962  |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|                                                                                                                                                                                                                                    |  |                                | 477,567,920 |   |                                                          |     | 535,190,844 |      |  |     | 617,759,458  |   |  |     | 47,483 |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Operating income                                                                                                                                                                                                                    |  |                                | 152,321,409 |   |                                                          |     | 154,775,468 |      |  |     | 157,310,187  |   |  |     | 12,091 |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Interest income                                                                                                                                                                                                                     |  |                                | 4,801,539   |   |                                                          |     | 6,853,900   |      |  |     | 5,776,600    |   |  |     | 444    |  
|Interest expense                                                                                                                                                                                                                    |  |                                | (17,280,735 | ) |                                                          |     | (20,791,606 | )    |  |     | (24,914,596  | ) |  |     | (1,915 | )
|Exchange gain (loss), net                                                                                                                                                                                                           |  |                                | 5,581,574   |   |                                                          |     | (22,394,716 | )    |  |     | 7,395,154    |   |  |     | 568    |  
|Valuation of derivatives and other financial items, net                                                                                                                                                                             |  |                                | (11,975,955 | ) |                                                          |     | 8,177,785   |      |  |     | (7,810,338   | ) |  |     | (600   | )
|Equity interest in net income of associated companies                                                                                                                                                                               |  |                                | 1,671,210   |   |                                                          |     | 1,923,997   |      |  |     | 761,361      |   |  |     | 59     |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Profit before income tax                                                                                                                                                                                                            |  |                                | 135,119,042 |   |                                                          |     | 128,544,828 |      |  |     | 138,518,368  |   |  |     | 10,647 |  
|Income tax (Note 20)                                                                                                                                                                                                                |  |                                | 36,213,619  |   |                                                          |     | 40,420,662  |      |  |     | 46,378,691   |   |  |     | 3,565  |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Net profit for the period                                                                                                                                                                                                           |  | Ps.                            | 98,905,423  |   |                                                          | Ps. | 88,124,166  |      |  | Ps. | 92,139,677   |   |  | US$ | 7,082  |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Net profit for the period attributable to:                                                                                                                                                                                          |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Equity holders of the parent                                                                                                                                                                                                        |  | Ps.                            | 91,123,052  |   |                                                          | Ps. | 82,853,529  |      |  | Ps. | 91,440,880   |   |  | US$ | 7,028  |  
|Non-controlling interests                                                                                                                                                                                                           |  |                                | 7,782,371   |   |                                                          |     | 5,270,637   |      |  |     | 698,797      |   |  |     | 54     |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|                                                                                                                                                                                                                                    |  | Ps.                            | 98,905,423  |   |                                                          | Ps. | 88,124,166  |      |  | Ps. | 92,139,677   |   |  | US$ | 7,082  |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Basic and diluted earnings per share attributable to equity holders of the parent from continuing operations                                                                                                                        |  | Ps.                            | 1.15        |   |                                                          | Ps. | 1.05        |      |  | Ps. | 1.20         |   |  | US$ | 0.09   |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Other comprehensive income items:                                                                                                                                                                                                   |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Effect of translation of foreign entities                                                                                                                                                                                           |  | Ps.                            | (7,155,708) |   |                                                          | Ps. | 10,461,607  |      |  | Ps. | (33,175,667) |   |  | US$ | (2,550 | )
|Effect of fair value of derivatives, net of deferred taxes                                                                                                                                                                          |  |                                | (675,686    | ) |                                                          |     | (317,598    | )    |  |     | (239,164     | ) |  |     | (18    | )
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Total other comprehensive income items for the period                                                                                                                                                                               |  |                                | (7,831,394  | ) |                                                          |     | 10,144,009  |      |  |     | (33,414,831  | ) |  |     | (2,568 | )
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Total comprehensive income for the period                                                                                                                                                                                           |  | Ps.                            | 91,074,029  |   |                                                          | Ps. | 98,268,175  |      |  | Ps. | 58,724,846   |   |  | US$ | 4,514  |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Comprehensive income for the period attributable to:                                                                                                                                                                                |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|Equity holders of the parent                                                                                                                                                                                                        |  | Ps.                            | 82,792,909  |   |                                                          | Ps. | 92,935,766  |      |  | Ps. | 58,535,796   |   |  | US$ | 4,499  |  
|Non-controlling interests                                                                                                                                                                                                           |  |                                | 8,281,120   |   |                                                          |     | 5,332,409   |      |  |     | 189,050      |   |  |     | 15     |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  
|                                                                                                                                                                                                                                    |  | Ps.                            | 91,074,029  |   |                                                          | Ps. | 98,268,175  |      |  | Ps. | 58,724,846   |   |  | US$ | 4,514  |  
|                                                                                                                                                                                                                                    |  |                                |             |   |                                                          |     |             |      |  |     |              |   |  |     |        |  

The accompanying notes are an integral part of these financial statements.



F-5



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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, 2010, 2011 and 2012

(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, 2010                                                                    |  | Ps.           | 30,115,549 |   |               | Ps. | 358,440 |                  |  | Ps. | 189,974,806             |   |  | Ps.                                                                   | 190,333,246 |   |                      | Ps. | 435,522      |                                                        |  | Ps. | 22,980,451               |   |  | Ps.         | 243,864,768 |   |  | Ps. | 69,933,392  |   |  | Ps. | 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 | )
|Other                                                                                         |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     | 10,009      |   |  |     | 10,009      |  
|Acquisition of non-controlling interests                                                      |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     | 280,548     |   |  |     | 280,548     |  
|Excess in purchase price over book value of acquired shares of companies under common control |  |               | 66,322,488 |   |               |     |         |                  |  |     | (54,886,581             | ) |  |                                                                       | (54,886,581 | ) |                      |     |              |                                                        |  |     |                          |   |  |             | 11,435,907  |   |  |     | (46,103,299 | ) |  |     | (34,667,392 | )
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Balance at December 31, 2010                                                                  |  |               | 96,433,461 |   |               |     | 358,440 |                  |  |     | 195,774,252             |   |  |                                                                       | 196,132,692 |   |                      |     | 34,165       |                                                        |  |     | 15,051,665               |   |  |             | 307,651,983 |   |  |     | 28,385,187  |   |  |     | 336,037,170 |  
|Net profit for the period                                                                     |  |               |            |   |               |     |         |                  |  |     | 82,853,529              |   |  |                                                                       | 82,853,529  |   |                      |     |              |                                                        |  |     |                          |   |  |             | 82,853,529  |   |  |     | 5,270,637   |   |  |     | 88,124,166  |  
|Effect of fair value of derivatives, net of deferred taxes                                    |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     | (276,748     | )                                                      |  |     |                          |   |  |             | (276,748    | ) |  |     | (40,850     | ) |  |     | (317,598    | )
|Effect of translation of foreign entities                                                     |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     | 10,358,985               |   |  |             | 10,358,985  |   |  |     | 102,622     |   |  |     | 10,461,607  |  
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Comprehensive income for the period                                                           |  |               |            |   |               |     |         |                  |  |     | 82,853,529              |   |  |                                                                       | 82,853,529  |   |                      |     | (276,748     | )                                                      |  |     | 10,358,985               |   |  |             | 92,935,766  |   |  |     | 5,332,409   |   |  |     | 98,268,175  |  
|Dividends                                                                                     |  |               |            |   |               |     |         |                  |  |     | (13,987,602             | ) |  |                                                                       | (13,987,602 | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (13,987,602 | ) |  |     | (3,403,114  | ) |  |     | (17,390,716 | )
|Repurchase of shares                                                                          |  |               | (13,825    | ) |               |     |         |                  |  |     | (52,437,966             | ) |  |                                                                       | (52,437,966 | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (52,451,791 | ) |  |     |             |   |  |     | (52,451,791 | )
|Acquisition of non-controlling interests
through public offer to purchases                    |  |               |            |   |               |     |         |                  |  |     | (47,693,452             | ) |  |                                                                       | (47,693,452 | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (47,693,452 | ) |  |     | (19,770,918 | ) |  |     | (67,464,370 | )
|Other acquisitions of non-controlling interests                                               |  |               |            |   |               |     |         |                  |  |     | (814,720                | ) |  |                                                                       | (814,720    | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (814,720    | ) |  |     | (544,053    | ) |  |     | (1,358,773  | )
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Balance at December 31, 2011                                                                  |  |               | 96,419,636 |   |               |     | 358,440 |                  |  |     | 163,694,041             |   |  |                                                                       | 164,052,481 |   |                      |     | (242,583     | )                                                      |  |     | 25,410,650               |   |  |             | 285,640,184 |   |  |     | 9,999,511   |   |  |     | 295,639,695 |  
|Net profit for the period                                                                     |  |               |            |   |               |     |         |                  |  |     | 91,440,880              |   |  |                                                                       | 91,440,880  |   |                      |     |              |                                                        |  |     |                          |   |  |             | 91,440,880  |   |  |     | 698,797     |   |  |     | 92,139,677  |  
|Effect of fair value of derivatives, net of deferred taxes                                    |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     | (253,428     | )                                                      |  |     |                          |   |  |             | (253,428    | ) |  |     | 14,264      |   |  |     | (239,164    | )
|Effect of translation of foreign entities                                                     |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     | (32,651,656              | ) |  |             | (32,651,656 | ) |  |     | (524,011    | ) |  |     | (33,175,667 | )
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Comprehensive income for the period                                                           |  |               |            |   |               |     |         |                  |  |     | 91,440,880              |   |  |                                                                       | 91,440,880  |   |                      |     | (253,428     | )                                                      |  |     | (32,651,656              | ) |  |             | 58,535,796  |   |  |     | 189,050     |   |  |     | 58,724,846  |  
|Dividends                                                                                     |  |               |            |   |               |     |         |                  |  |     | (15,216,636             | ) |  |                                                                       | (15,216,636 | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (15,216,636 | ) |  |     | (326,620    | ) |  |     | (15,543,256 | )
|Repurchase of shares                                                                          |  |               | (4,795     | ) |               |     |         |                  |  |     | (18,326,979             | ) |  |                                                                       | (18,326,979 | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (18,331,774 | ) |  |     |             |   |  |     | (18,331,774 | )
|Effect of consolidation of NET                                                                |  |               |            |   |               |     |         |                  |  |     | (155,158                | ) |  |                                                                       | (155,158    | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (155,158    | ) |  |     | 3,041,699   |   |  |     | 2,886,541   |  
|Other acquisitions of non-controlling interests                                               |  |               |            |   |               |     |         |                  |  |     | (8,674,597              | ) |  |                                                                       | (8,674,597  | ) |                      |     |              |                                                        |  |     |                          |   |  |             | (8,674,597  | ) |  |     | (2,378,078  | ) |  |     | (11,052,675 | )
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  
|Balance at December 31, 2012                                                                  |  | Ps.           | 96,414,841 |   |               | Ps. | 358,440 |                  |  | Ps. | 212,761,551             |   |  | Ps.                                                                   | 213,119,991 |   |                      |     | Ps.(496,011) |                                                        |  | Ps. | (7,241,006)              |   |  | Ps.         | 301,797,815 |   |  | Ps. | 10,525,562  |   |  | Ps. | 312,323,377 |  
|                                                                                              |  |               |            |   |               |     |         |                  |  |     |                         |   |  |                                                                       |             |   |                      |     |              |                                                        |  |     |                          |   |  |             |             |   |  |     |             |   |  |     |             |  

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

Consolidated Statements of Cash Flows

(In thousands of Mexican pesos)



|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|---------------------------------------------------------- |  | ----------------------------- | ------------ | - | -------------------------------------------------------- | --- | ------------ | ---- |  | --- | ------------ | - |  | --- | ------- | -
|                                                           |  | For the year ended December31 |              |   | Millions of U.S.dollars, exceptfor earningsper share2012 |    
|                                                           |  | 2010                          |              |   | 2011                                                     |     |              | 2012 |  |    
|Operating activities                                       |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Profit before income tax                                   |  | Ps.                           | 135,119,042  |   |                                                          | Ps. | 128,544,828  |      |  | Ps. | 138,518,368  |   |  | US$ | 10,647  |  
|Items not requiring the use of cash:                       |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Depreciation                                               |  |                               | 80,294,690   |   |                                                          |     | 82,642,200   |      |  |     | 92,268,275   |   |  |     | 7,092   |  
|Amortization of intangible assets                          |  |                               | 10,776,637   |   |                                                          |     | 11,354,835   |      |  |     | 11,316,462   |   |  |     | 870     |  
|Equity interest in net income of associated companies      |  |                               | (1,671,210   | ) |                                                          |     | (1,923,997   | )    |  |     | (761,361     | ) |  |     | (59     | )
|Loss on sale of fixed assets                               |  |                               | 806,391      |   |                                                          |     | 32,463       |      |  |     | 112,445      |   |  |     | 9       |  
|Net period cost of labor obligations                       |  |                               | 6,160,141    |   |                                                          |     | 6,272,520    |      |  |     | 9,214,804    |   |  |     | 708     |  
|Exchange (gain) loss, net                                  |  |                               | (3,727,490   | ) |                                                          |     | 30,971,438   |      |  |     | (18,908,099  | ) |  |     | (1,453  | )
|Interest expense                                           |  |                               | 17,280,735   |   |                                                          |     | 20,791,606   |      |  |     | 24,914,596   |   |  |     | 1,915   |  
|Valuation of derivatives, net                              |  |                               | 1,037,728    |   |                                                          |     | (10,692,199  | )    |  |     | 5,885,869    |   |  |     | 452     |  
|Working capital changes:                                   |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Accounts receivable                                        |  |                               | 302,354      |   |                                                          |     | (11,287,204  | )    |  |     | 5,077,352    |   |  |     | 391     |  
|Prepaid expenses                                           |  |                               | (1,239,958   | ) |                                                          |     | (1,307,557   | )    |  |     | (379,179     | ) |  |     | (29     | )
|Related parties                                            |  |                               | (525,056     | ) |                                                          |     | (530,500     | )    |  |     | 153,888      |   |  |     | 12      |  
|Inventories                                                |  |                               | (2,868,024   | ) |                                                          |     | (6,721,377   | )    |  |     | 4,104,304    |   |  |     | 315     |  
|Other assets                                               |  |                               | (4,408,473   | ) |                                                          |     | (3,064,825   | )    |  |     | (3,096,301   | ) |  |     | (238    | )
|Labor obligations                                          |  |                               | (1,797,077   | ) |                                                          |     | (13,030,247  | )    |  |     | (10,716,319  | ) |  |     | (824    | )
|Accounts payable and accrued liabilities                   |  |                               | 10,192,387   |   |                                                          |     | 20,966,860   |      |  |     | (1,283,784   | ) |  |     | (97     | )
|Employee profit sharing                                    |  |                               | (3,446,374   | ) |                                                          |     | (3,346,952   | )    |  |     | (3,354,552   | ) |  |     | (258    | )
|Financial instruments                                      |  |                               | 2,508,129    |   |                                                          |     | 6,130,808    |      |  |     | (924,497     | ) |  |     | (71     | )
|Deferred revenues                                          |  |                               | 1,373,800    |   |                                                          |     | 994,315      |      |  |     | 1,809,425    |   |  |     | 139     |  
|Income taxes paid                                          |  |                               | (45,410,398  | ) |                                                          |     | (63,556,256  | )    |  |     | (47,347,341  | ) |  |     | (3,639  | )
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Net cash flow provided by operating activities             |  |                               | 200,757,974  |   |                                                          |     | 193,240,759  |      |  |     | 206,604,355  |   |  |     | 15,882  |  
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Purchase of property, plant and equipment                  |  |                               | (77,866,409  | ) |                                                          |     | (120,193,188 | )    |  |     | (121,955,947 | ) |  |     | (9,374  | )
|Acquisition of licenses                                    |  |                               | (4,075,229   | ) |                                                          |     | (993,692     | )    |  |     | (7,830,248   | ) |  |     | (602    | )
|Dividends received                                         |  |                               |              |   |                                                          |     |              |      |  |     | 571,187      |   |  |     | 44      |  
|Proceeds from sale of fixed assets                         |  |                               | 884,241      |   |                                                          |     | 38,312       |      |  |     | 58,006       |   |  |     | 4       |  
|Cash acquired by NET consolidation                         |  |                               |              |   |                                                          |     |              |      |  |     | 5,378,807    |   |  |     | 412     |  
|Acquisition of investments in associates                   |  |                               | (31,463,621  | ) |                                                          |     | (2,271,059   | )    |  |     | (73,849,936  | ) |  |     | (5,676  | )
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Net cash flow used in investing activities                 |  |                               | (112,521,018 | ) |                                                          |     | (123,419,627 | )    |  |     | (197,628,131 | ) |  |     | (15,192 | )
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Financing activities                                       |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Loans obtained                                             |  |                               | 180,852,643  |   |                                                          |     | 87,230,827   |      |  |     | 140,094,584  |   |  |     | 10,768  |  
|Repayment of loans                                         |  |                               | (148,899,354 | ) |                                                          |     | (41,222,218  | )    |  |     | (97,354,311  | ) |  |     | (7,483  | )
|Interest paid                                              |  |                               | (14,719,299  | ) |                                                          |     | (18,067,293  | )    |  |     | (21,329,791  | ) |  |     | (1,639  | )
|Repurchase of shares                                       |  |                               | (18,150,990  | ) |                                                          |     | (53,726,784  | )    |  |     | (17,836,724  | ) |  |     | (1,371  | )
|Dividends paid                                             |  |                               | (17,193,902  | ) |                                                          |     | (17,042,980  | )    |  |     | (15,384,647  | ) |  |     | (1,183  | )
|Derivative financial instruments                           |  |                               | 826,850      |   |                                                          |     | 3,158,678    |      |  |     | 5,003,187    |   |  |     | 385     |  
|Acquisition of non-controlling interests                   |  |                               | (34,667,391  | ) |                                                          |     | (67,464,370  | )    |  |     | (11,052,674  | ) |  |     | (850    | )
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Net cash flow used in financing activities                 |  |                               | (51,951,443  | ) |                                                          |     | (107,134,140 | )    |  |     | (17,860,376  | ) |  |     | (1,373  | )
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Net increase (decrease) in cash and cash equivalents       |  |                               | 36,285,513   |   |                                                          |     | (37,313,008  | )    |  |     | (8,884,152   | ) |  |     | (683    | )
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Adjustment to cash flows due to exchange rate fluctuations |  |                               | (113,581     | ) |                                                          |     | 498,539      |      |  |     | (4,752,644   | ) |  |     | (365    | )
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Cash and cash equivalents at beginning of period           |  |                               | 59,766,533   |   |                                                          |     | 95,938,465   |      |  |     | 59,123,996   |   |  |     | 4,544   |  
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|Cash and cash equivalents at end of period                 |  | Ps.                           | 95,938,465   |   |                                                          | Ps. | 59,123,996   |      |  | Ps. | 45,487,200   |   |  | US$ | 3,496   |  
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  
|                                                           |  |                               |              |   |                                                          |     |              |      |  |     |              |   |  |     |         |  

Non-cash transactions related to:



|                                                                                   |  |      |            |  |      |     |            |      |  |     |            |  |  | 
|---------------------------------------------------------------------------------- |  | ---- | ---------- |  | ---- | --- | ---------- | ---- |  | --- | ---------- |  |  | 
|Non-cash investing activities                                                      |  | 2010 |            |  | 2011 |     |            | 2012 |  |     |           
|Acquisitions of property, plant and equipment in accounts payable at end of period |  | Ps.  | 7,708,000  |  |      | Ps. | 36,319,549 |      |  | Ps. | 30,461,133 |  |  | 
|Non-cash financing activities                                                      |  |      |            |  |      |     |            |      |  |     |            |  |  | 
|Capital stock (Acquisition of NCI of Telmex and TII)                               |  | Ps.  | 66,322,488 |  |      | Ps. |           |      |  |     |           |  |  | 

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, 2011 and 2012

(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
or AMX) 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, publishing and call center
services.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------

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 have different dates of expiration through 2046. In the next two fiscal years there are no licenses scheduled to expire and/or terminate.

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 April 18, 2013. They were then
approved by the Companys shareholders, on April 22, 2013.

Relevant events

a) Public offers to purchase

i) In March
2011, the Company launched a public offer to purchase up to 571,391,243 outstanding Series A and L shares of Telmex Internacional, S.A. de C.V. (Telint), corresponding to 3.18% of the total outstanding shares of Telint which were not previously
owned by América Móvil.

The purchase price per share was Ps.11.66 and the total amount paid as a result of the public offer was
Ps.591,536. Such offer concluded on April 11, 2011.



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##### Table of Contents

ii) On October 11, 2011, the Company launched a tender offer for all of the outstanding shares of all
classes of capital stock of Teléfonos de México, S.A.B. de C.V. (TMX or Telmex) that the Company did not directly or indirectly own. The tender offer expired on November 11, 2011 and as a result of the tender offer, América
Móvil, directly and indirectly, owned 92.99% of the shares representing the capital stock of Telmex. The purchase price was Ps.10.50 per share and Ps.210 per ADS, resulting in a total purchase price of approximately Ps.62.5 billion.

During 2012, the Company increased its direct and indirect holding of the outstanding shares of Telint and TMX to 97.59% and 97.53%,
respectively, through additional tender offers, in the amount of Ps.8,051,089.

The acquisition of non-controlling interest in the public
tender offers described on (i) and (ii) were accounted for as an equity transaction based on the market value of the offer at the date of acquisition.

iii) Telint delisted its shares in August 2011 from the New York Stock Exchange (NYSE) and the NASDAQ Capital Market (NASDAQ). Telmex delisted its securities in February 2012 from
the NYSE and NASDAQ. Each has also terminated its reporting obligations under the Mexican securities laws and the U.S. federal securities laws. Each delisted its securities from the Mercado de Valores Latinoamericanos en Euros in Madrid,
Spain. Each has also terminated its reporting obligations under the Mexican securities laws and the U.S. federal securities laws.

iv) On
December 7, 2012 TELMEX was authorized by the Comisión Nacional Bancaria y de Valores to proceed with the cancellation of its shares registration in the Registro Nacional de Valores and to proceed with its
delisting from the Mexican Stock Exchange.

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, 2012.

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. Actual results could differ from these estimates and assumptions.

The Mexican peso is the functional
currency and the reporting currency of these financial statements.

b) Business combination, consolidation and basis of translation of
financial statements of foreign subsidiaries

i) Business combination

Subsidiaries:

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.

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 profit and equity of the associate.



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##### Table of Contents

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.

Acquisition-related cost is accounted as an expense in the statement of comprehensive income
as they are incurred.

Goodwill is initially measured as the excess of the aggregate of the fair value of the consideration transferred plus
any non-controlling interest in the acquiree over the net value of the identifiable assets acquired and liabilities assumed as of the acquisition date.

ii) 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.

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.

Acquisitions of non-controlling interest are recognized as equity transactions (transactions with owners in their capacity as owners). 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.

Associates:

Associates are all those entities
the Company has significant influence without having control. According to IAS 28, Investments in Associates, significant influence is the power to participate in the financial and operating policy decisions of the investee
but is not control or joint control over those policies. It typically occurs when an investor holds from 20% to 50% of the voting power of an investee.

Investments in associates are accounted for using the equity method and are initially recognized at cost. The Companys investment in associates includes goodwill identified on acquisition, net of
any accumulated impairment losses.

The Companys participation in the profits or losses of the associate after acquisition is recognized
in the income statements and its share of other comprehensive income after acquisition is recognized directly in other comprehensive income.

The Company assesses at each reporting date whether there is a objective evidence that investment in associates is impaired. If so the Company calculates
the amount of impairment as the difference between the recoverable amount of the associate and its carrying value.



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##### Table of Contents

The equity interest in the principal subsidiaries and associated companies at December 31, 2011 and
2012 is as follows:



|                                                                           |  |         |                    |  |                                |  |       |      |  |  |       |  
|-------------------------------------------------------------------------- |  | ------- | ------------------ |  | ------------------------------ |  | ----- | ---- |  |  | ----- | -
|                                                                           |  |         |                    |  | Equity interest at December 31 | 
|Company name                                                               |  | Country |                    |  | 2011                           |  |       | 2012 | 
|Subsidiarias:                                                              |  |         |                    |  |                                |  |       |      |  |  |       |  
|AMX Tenedora, S.A. de C.V.                                                 |  |         | Mexico             |  |                                |  | 100.0 | %    |  |  | 100.0 | %
|AMOV Europa B.V. S.A.C.                                                    |  |         | Netherlands        |  |                                |  |       |      |  |  | 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. y subsidiarias (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        |  |                                |  |       |      |  |  |       |  
|Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras)(1) |  |         | Honduras           |  |                                |  | 100.0 | %    |  |  | 100.0 | %
|Amov Telecom, S.A. de C.V.(1)                                              |  |         | Honduras           |  |                                |  | 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.(2)                                                          |  |         | Brazil             |  |                                |  | 99.4  | %    |  |  | 100.0 | %
|Claro S.A. (antes BCP, S.A.)(2)                                            |  |         | Brazil             |  |                                |  | 99.9  | %    |  |  | 100.0 | %
|América Central Tel, S.A. de C.V. (ACT)                                    |  |         | Mexico             |  |                                |  | 100.0 | %    |  |  | 100.0 | %
|Telecomunicaciones de Guatemala, S.A. (Telgua)                             |  |         | Guatemala          |  |                                |  | 99.3  | %    |  |  | 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        |  |                                |  | 48.9  | %    |  |  | 48.9  | %
|CTE Telecom Personal, S.A. de C.V. (Personal)                              |  |         | El Salvador        |  |                                |  | 95.8  | %    |  |  | 95.8  | %
|Comunicación Celular, S.A. (Comcel)                                        |  |         | 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           |  |                                |  | 99.3  | %    |  |  | 99.3  | %
|Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel)                |  |         | Ecuador            |  |                                |  | 100.0 | %    |  |  | 100.0 | %
|AMX Argentina Holdings, S.A.(3)                                            |  |         | Argentina          |  |                                |  | 100.0 | %    |  |  |      |  
|AMX Argentina, S.A.(3)                                                     |  |         | 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 | %
|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.(4)                                              |  |         | Peru               |  |                                |  | 100.0 | %    |  |  | 100.0 | %
|Telmex Perú, S.A.(4)                                                       |  |         | Peru               |  |                                |  | 99.6  | %    |  |  |      |  



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|                                                              |  |         |               |  |                                |  |      |      |  |  |       |  
|------------------------------------------------------------- |  | ------- | ------------- |  | ------------------------------ |  | ---- | ---- |  |  | ----- | -
|                                                              |  |         |               |  | Equity interest at December 31 | 
|Company name                                                  |  | Country |               |  | 2011                           |  |      | 2012 | 
|Claro Panamá, S.A.                                            |  |         | Panama        |  |                                |  | 99.7 | %    |  |  | 100.0 | %
|Carso Global Telecom, S.A.B. de C.V.                          |  |         | Mexico        |  |                                |  | 99.9 | %    |  |  | 99.9  | %
|Empresas y Controles en Comunicaciones, S.A. de C.V.          |  |         | Mexico        |  |                                |  | 99.9 | %    |  |  | 99.9  | %
|Teléfonos de México, S.A.B. de C.V.(5)                        |  |         | Mexico        |  |                                |  | 93.3 | %    |  |  | 97.5  | %
|Telmex Internacional, S.A.B. de C.V.                          |  |         | Mexico        |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Controladora de Servicios de Telecomunicaciones, S.A. de C.V. |  |         | Mexico        |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Telmex Argentina, S.A.                                        |  |         | Argentina     |  |                                |  | 97.3 | %    |  |  | 99.6  | %
|Ertach, S.A.                                                  |  |         | Argentina     |  |                                |  | 97.3 | %    |  |  | 99.5  | %
|Telstar, S.A.                                                 |  |         | Uruguay       |  |                                |  | 97.3 | %    |  |  | 99.9  | %
|Ecuador Telecom, S.A.                                         |  |         | Ecuador       |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Empresa Brasileira de Telecomunicacoes, S.A.  Embratel       |  |         | Brazil        |  |                                |  | 95.1 | %    |  |  | 95.4  | %
|Páginas Telmex Colombia, S.A.                                 |  |         | Colombia      |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Claro 155, S.A.                                               |  |         | Chile         |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Claro 110, S.A.                                               |  |         | Chile         |  |                                |  | 99.9 | %    |  |  | 99.9  | %
|Sección Amarilla USA, LLC.                                    |  |         | United States |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Publicidad y Contenido Editorial, S.A. de C.V.                |  |         | Mexico        |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Editorial Contenido, S.A. de C.V.                             |  |         | Mexico        |  |                                |  | 97.5 | %    |  |  | 97.6  | %
|Plaza VIP COM, S.A.P.I. de C.V.(6)                            |  |         | Mexico        |  |                                |  | 78.0 | %    |  |  | 97.6  | %
|Grupo Telvista, S.A. de C.V.                                  |  |         | Mexico        |  |                                |  | 86.9 | %    |  |  | 88.9  | %
|Net Serviços de Comunicação, S.A.                             |  |         | Brazil        |  |                                |  | 87.5 | %    |  |  | 88.0  | %
|                                                              |  |         |              
|Associated companies:                                         |  |         |               |  |                                |  |      |      |  |  |       |  
|Hildebrando, S.A. de C.V.                                     |  |         | Mexico        |  |                                |  | 34.3 | %    |  |  | 35.0  | %
|KPN B.V.                                                      |  |         | Netherlands   |  |                                |  |     |      |  |  | 29.77 | %
|Telecom Austria AG                                            |  |         | Austria       |  |                                |  |     |      |  |  | 23.69 | %



|(1) | On September 30, 2012, Amov Telecom, S.A. de C.V. was merged into Servicios de Comunicaciones de Honduras, S.A. de C.V.
|--- | -----------------------------------------------------------------------------------------------------------------------

|(2) | On May 23, 2012, all of Americel, S.A.s shares of capital stock were converted to shares of Claro, S.A.
|--- | --------------------------------------------------------------------------------------------------------

|(3) | On November 14, 2012, Argentina Holdings S.A. was merged into AMX Argentina S.A.
|--- | --------------------------------------------------------------------------------

|(4) | On May 1, 2012, Telmex Perú, S.A. was merged into América Móvil Perú, S.A.C.
|--- | ----------------------------------------------------------------------------

|(5) | During 2012, the Company increased its shareholding as a result of its tender offer to acquire the shares of Teléfonos de México, S.A.B. de C.V.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------

|(6) | The Company signed an agreement on July 23, 2012, the Company acquired share previously owned by Plaza VIP.com bringing its ownership level to 97.6% at
December 31, 2012.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------

iii) Basis of translation of financial statements of foreign subsidiaries and associated companies

The financial statements of foreign subsidiaries jointly represent approximately 59%, 59% and 63% of operating revenues of 2010, 2011 and
2012, respectively, and approximately 76% and 72% of total assets at December 31, 2011 and 2012, respectively. The financial information is consolidated, as appropriate, 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 the subsidiaries operate in a hyperinflationary
economic environment and the local currency is their functional



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##### Table of Contents

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 prevailing 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, 2011 and 2012, the cumulative translation gain (loss) was Ps. 25,410,650 and
Ps.(7,241,006), 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 collectability.

During
2012, the Company reviewed its distributor agreements and concluded that based on the terms and clauses of those agreements that the appropriate IFRS presentation of commissions paid to distributors related to activation, loyalty or volume was as a
commercial expense rather than as a reduction of revenues as was applied historically. Starting January 1, 2012, AMX adjusted its accounting for these amounts. For the years ended December 31, 2010 and 2011 such amounts have also been
retrospectively adjusted in the Statement of Comprehensive Income for comparability purposes. This adjustment resulted in an increase in both revenues and commercial, administrative and general expenses in the amount of Ps. 22,033,651 in 2010 and
Ps. 24,664,808 in 2011.

Loyalty and activation commissions are accrued monthly as an expense based on statistical information about customer
retention, sales volume and the number of new customers obtained by each distributor. Retention commissions are paid when customers continue for a specified period. Volume commissions are paid at the time the distributor reaches prescribed ranges of
activated clients.

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.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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##### Table of Contents

| |  |  | 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.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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.

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.



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f) Cash and cash equivalents

Cash and cash equivalents consist of bank deposits and highly liquid investments with maturities of less than three months. 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. For acquired subsidiaries, goodwill represents the difference between the purchase price and the fair value of the net assets acquired
at the acquisition date. For acquired associates, the investment in associates includes goodwill identified on acquisition, net of any impairment loss.

Goodwill is reviewed annually to determine its recoverability, or more often if circumstances indicate that the carrying value of the goodwill might not be 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 carrying value, an impairment loss is charged to results of operations.

For the years ended December 31, 2010, 2011 and 2012, 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 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 six months are capitalized as part of the cost
of the asset. During 2010, 2011 and 2012 the borrowing costs that were capitalized amounted to Ps. 2,540,837, Ps. 3,845,609 and Ps. 3,152,811, respectively.



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##### Table of Contents

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 telephone 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 of 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 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:



|                                              |  |            
|--------------------------------------------- |  | -----------
|Plant                                         |  | 3.3% to 33%
|Performance monitoring equipment in the 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, 2010, 2011 and 2012, no impairment losses were recognized.

k) Licenses and trademarks

Licenses are
recorded at acquisition cost, net of accumulated amortization.

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.

The licenses that in accordance with government requirements are categorized as automatically renewable, are considered by the Company as intangible assets with an indefinite useful life. Accordingly,
they are not amortized.

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 carrying value of the
Companys licenses and trademarks with indefinite useful lives and 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.



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##### Table of Contents

For the years ended December 31, 2010 2011 and 2012, 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, investments in associates, goodwill and intangible assets. 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, 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.

Key assumptions used in value in use calculations

The premises utilized in the projections were applied in accordance with IAS 36 for each of the Companys subsidiaries, considering each operating subsidiary as a cash generating unit (CGU).

The subsidiaries being analyzed for impairment are cash generating units that through December 31, 2012 were under the Companys
operation.

The forecasts were performed by the Companys management in real terms (net of inflation) and in pesos with acquisition value
as of December 31, 2012. The forecasts were made according to the 2012 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 developing the information for the financial forecasts, premises and assumptions have been included that 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 develop the financial forecasts were validated by the
Companys CEO and the 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
| | - |  | -------------------------



| |  |  | Economic situation of each country
| | - |  | ----------------------------------



| |  |  | Investments in maintenance of the current assets
| | - |  | ------------------------------------------------



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##### Table of Contents

| |  |  | Investments in technology for expanding the current assets
| | - |  | ----------------------------------------------------------



| |  |  | Market consolidation and synergies
| | - |  | ----------------------------------

The foregoing forecasts could differ from the results obtained through time; however, AMX has prepared its estimates based on the current situation of each of the cash generating units.

To determine the discount rate, AMX uses the weighted-average cost of capital (WACC) which was determined for each of the cash generating units in real
terms and is described in following paragraphs.

The estimated discount rates to perform the IAS 36 impairment test for each CGU consider
market participants assumptions. Market participants were selected taking into consideration the size, operations and characteristics of the business that were similar to those in AMX.

Discount rate and market participants

The discount rates represents the current market
assessment of the risks specific to each Cash Generating Unit (CGU), taking into consideration the time value of money and individual risks of the underlying assets that have not been incorporated in the cash flow estimates. The discount rate
calculation is based on the specific circumstances of the Company and its operating segments and is derived from its WACC. The WACC takes into account both debt and equity. The cost of equity is derived from the expected return on investment by
AMXs investors. The cost of debt is based on the interest bearing borrowings AMX is obliged to service. Segment-specific risk is incorporated by applying individual beta factors.

The beta factors are evaluated annually based on publicly available market data.

Market
participant assumptions are important because, not only do they include industry data for growth rates, management also assesses how the CGUs position, relative to its competitors, might change over the budgeted period.

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
| | - |  | ----------------

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 to the Company 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.



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##### Table of Contents

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.

Impairment of financial assets

The Company assesses, at each reporting date, whether there is any objective evidence that a financial asset or a group of financial assets is impaired. A financial asset or a group of financial assets is
deemed to be impaired if, and only if, there is objective evidence of impairment as a result of one or more events that has occurred after the initial recognition of the asset (an incurred loss event) and that loss event has an impact on the
estimated future cash flows of the financial asset or the group of financial assets that can be reliably estimated. Evidence of impairment may include indications that the debtors or a group of debtors is experiencing significant financial
difficulty, default or delinquency in interest or principal payments, the probability that they will enter bankruptcy or other financial reorganization and when observable data indicate that there is a measurable decrease in the estimated future
cash flows, such as changes in arrears or economic conditions that correlate with defaults.

Financial assets carried at amortized cost

For financial assets carried at amortized cost, the Company first assesses whether objective evidence of impairment exists individually
for financial assets that are individually significant, or collectively for financial assets that are not individually significant. If the Company determines that no objective evidence of impairment exists for an individually assessed financial
asset, whether significant or not, it includes the asset in a group of financial assets with similar credit risk characteristics and collectively assesses them for impairment. Assets that are individually assessed for impairment and for which an
impairment loss is, or continues to be, recognized are not included in a collective assessment of impairment.

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 cost.

Financial liabilities at fair value through profit or loss

Financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities
designated upon initial recognition at fair value through profit or loss.

Financial liabilities are classified as held for trading if they
are acquired for the purpose of selling in the near term. This category includes derivative financial instruments entered into by the Company that are not designated as hedging instruments in hedge relationships as defined by IAS 39. Separated
embedded derivatives are also classified as held for trading unless they are designated as effective hedging instruments.

Gains or losses on
liabilities held for trading are recognized in the income statement.



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At initial recognition AMX did not designate any financial liabilities as fair value liabilities with
changes in the income statement.

Loans and borrowings

After initial recognition, interest bearing loans and borrowings are subsequently measured at amortized cost using the effective interest rate method. Gains and losses are recognized in the income
statement when the liabilities are derecognized as well as through the effective interest rate (EIR) amortization process.

Amortized cost is calculated by taking into account any discount or premium on acquisition and fees or costs that are an integral part of the EIR. The
EIR amortization is included in finance costs in the income statement.

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 offset 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.

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.

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

The Company has defined benefit pension plans in place in its 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, 2012.

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.

For the actuarial losses or gains determined in the actuarial computations, the Company uses the corridor approach. This approach consists of deferring
the recognition of the actuarial losses or gains and amortizing them over the estimated average remaining working lifetime of employees of the respective subsidiary, which 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.

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 by the Company 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.



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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.

Deferred tax consequences on unremitted foreign earnings are accounted for as temporary differences, except to the extent that the Company is able to
control the timing of the reversal of the temporary difference; and it is probable that the temporary difference will not reverse in the foreseeable future. Taxes paid on remitted foreign earnings are able to be offset against Mexican taxes, thus to
the extent that a remittance is to be made, the deferred tax would be limited to the incremental difference between the Mexican tax rate and the rate of the remitting country. As of December 31, 2011 and 2012, the Company has not provided for
any deferred taxes related to unremitted foreign earnings.

t) Sales tax

Revenues, expenses and assets are recognized net of the amount of sales tax, except:



| |  |  | When the sales tax incurred on a purchase of assets or services is not recoverable from the taxation authority, in which case, the sales tax is
recognized as part of the cost of acquisition of the asset or as part of the expense item, as applicable.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Receivables and payables that are stated with the amount of sales tax included.
| | - |  | -------------------------------------------------------------------------------

The net amount of sales tax recoverable from, or payable to, the taxation authority is included as part of receivables or payables in the statement of
financial position.

u) Advertising

Advertising expenses are expensed as incurred. For the years ended December 31, 2010, 2011 and 2012, advertising expenses were Ps.14,619,745, Ps.17,867,455 and Ps.22,652,826, respectively.

v) 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.

w) 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.



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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.

Sensitivity analysis

a) Exchange rate fluctuations

Should the Companys debt at December 31, 2012 of Ps.417,670,088 suffer a 10% increase in exchange rates, the debt would increase by
Ps.33,089,518 (resulting in total debt of Ps.450,759,606), while the Companys net interest expense would increase by Ps.1,635,843 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, 2012 increased by 100 basis points, the increase in net interest expense would be Ps.4,222,085.

The Company depends on several key suppliers and sellers. During the years ended December 31, 2010, 2011 and 2012, approximately 67%, 58% and 55%, respectively, of the total cost of the cellular
equipment of América Móvil represent purchases made from three suppliers, and approximately 45%, 29% and 20%, 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.

x) 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 31,
2010, 2011 and 2012, 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.

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.



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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, 2010, 2011 and 2012, 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.

y) Presentation of statement of
comprehensive income

The costs and expenses shown in América Móvils statement of comprehensive 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 comprehensive income, since it is a key indicator of the Companys performance.
Operating income includes operating revenues, operating costs and expenses.

z) 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.

z.1)
Convenience translation

At December 31, 2012, 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, 2012 at an exchange rate of Ps.13.0101 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, 2012 or any other exchange rate.

3. Standards issued but not yet effective and annual improvements

IAS 19, Employee Benefits (Amendment)

On June 16, 2012, the IASB published modifications to IAS 19, Employee Benefits, which changes the accounting for defined benefit plans and termination benefits. The modifications require the
recognition of the changes in the defined benefit obligation and plan assets when they occur, eliminating the corridor approach and accelerating the recognition or past service costs. The changes also eliminate the deferral of actuarial
gains/losses, and require that they be recorded directly within other comprehensive income in each reporting period. Changes in the defined benefit obligation and plan assets are divided in three components: service cost, net



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interest of net (assets) liabilities of defined benefits and remeasurement of the net (assets) liabilities for defined benefits. The net interest is calculated using a rate of return for high
quality corporate bonds, which may be less than the current rate used to calculate the expected return on the plan assets, resulting in a decrease to the profit for the current period. The modifications are effective beginning January 1, 2013,
with early adoption allowed. Also retrospective application is required with certain exceptions.

The Company is estimating that the
retrospective application of this standard will result in a charge to the December 31, 2012 equity of Ps.56,943 million, primarily related to unamortized actuarial losses, net of deferred taxes.

IAS 28 Investments in Associates and Joint Ventures (as revised in 2011)

As a consequence of the new IFRS 11 Joint Arrangements, and IFRS 12 Disclosure of Interests in Other Entities, IAS 28 Investments in Associates, has been renamed IAS 28 Investments in Associates and Joint
Ventures, and describes the application of the equity method to investments in joint ventures in addition to associates. The revised standard becomes effective for annual periods beginning on or after January 1, 2013.The Company is
currently evaluating the impact of the adoption of this new standard.

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 and financial liabilities 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 hedge accounting and impairment of financial
assets. The completion of this project is expected over the course of 2011 or the first half of 2012. The adoption of the first phase of IFRS 9 will have an effect on the classification and measurement of the Company ́s financial assets, but
will potentially have no impact on classification and measurements of financial liabilities. The Company will quantify the effect in conjunction with the other phases, when issued, to present a comprehensive picture.

The Company is currently evaluating the impact of the adoption of this new standard.

IFRS 10, Consolidated Financial Statements

IFRS 10 replaces the portion of IAS 27,
Consolidated and Separate Financial Statements, that addresses the accounting for consolidated financial statements. It also includes the issues raised in SIC-12, ConsolidationSpecial Purpose Entities.

IFRS 10 establishes a single control model that applies to all entities including special purpose entities. The changes introduced by IFRS 10 will
require management to exercise significant judgment to determine which entities are controlled, and therefore, are required to be consolidated by a parent, compared with the requirements that were in IAS 27. This standard becomes effective for
annual periods beginning on or after January 1, 2013.

The Company is currently evaluating the impact of the adoption of this new
standard.

IFRS 12, Disclosure of Involvement with Other Entities

IFRS 12 includes all of the disclosures that were previously in IAS 27 related to consolidated financial statements, as well as all of the disclosures that were previously included in IAS 31 and IAS 28.
These disclosures relate to an entitys interests in subsidiaries, joint arrangements, associates and structured entities.

New disclosures are also required. This standard is effective for annual periods beginning on or after January 1st2013.

The
Company is currently evaluating the impact of the adoption of this new standard.



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IFRS 13 Fair Value Measurement

IFRS 13 establishes a single source of guidance under IFRS for all fair value measurements. IFRS 13 does not change when an entity is required to use fair value, but rather provides guidance on how to
measure fair value under IFRS when fair value is required or permitted. This standard becomes effective for annual periods beginning on or after January 1, 2013. The Company is currently evaluating the impact of the adoption of this new
standard.

4. Cash and Cash Equivalents



|                    |  |                 |            |  |      |     |            | 
|------------------- |  | --------------- | ---------- |  | ---- | --- | ---------- | 
|                    |  | At December 31, |           
|                    |  | 2011            |            |  | 2012 |    
|Cash in banks       |  | Ps.             | 26,025,040 |  |      | Ps. | 17,225,343 | 
|Short-term deposits |  |                 | 33,098,956 |  |      |     | 28,261,857 | 
|                    |  |                 |            |  |      |     |            | 
|                    |  | Ps.             | 59,123,996 |  |      | Ps. | 45,487,200 | 
|                    |  |                 |            |  |      |     |            | 

5. Accounts Receivable, net

a) An analysis of accounts receivable at December 31, 2011 and 2012 is as follows:



|                                                                                                                        |  |                |             |   |      |     |             |  
|----------------------------------------------------------------------------------------------------------------------- |  | -------------- | ----------- | - | ---- | --- | ----------- | -
|                                                                                                                        |  | At December31, |            
|                                                                                                                        |  | 2011           |             |   | 2012 |    
|Subscribers and distributors                                                                                            |  | Ps.            | 92,744,737  |   |      | Ps. | 96,136,373  |  
|Mobile phone carriers for network interconnection and other services including el que llama paga (calling
party pays) |  |                | 12,513,251  |   |      |     | 6,780,334   |  
|Recoverable taxes                                                                                                       |  |                | 33,305,174  |   |      |     | 26,102,082  |  
|Sundry debtors                                                                                                          |  |                | 9,769,013   |   |      |     | 13,625,309  |  
|                                                                                                                        |  |                |             |   |      |     |             |  
|                                                                                                                        |  |                | 148,332,175 |   |      |     | 142,644,098 |  
|Less: Allowance for bad debts due from customers,
distributors and mobile phone carriers                                |  |                | (23,358,822 | ) |      |     | (22,438,144 | )
|                                                                                                                        |  |                |             |   |      |     |             |  
|Net                                                                                                                     |  | Ps.            | 124,973,353 |   |      | Ps. | 120,205,954 |  
|                                                                                                                        |  |                |             |   |      |     |             |  

b) Changes in the allowance for doubtful accounts during the years ended December 31, 2010, 2011 and 2012 were as
follows:



|                               |  |                                 |             |   |      |     |             |      |  |    |             |  
|------------------------------ |  | ------------------------------- | ----------- | - | ---- | --- | ----------- | ---- |  | -- | ----------- | -
|                               |  | For the years ended December31, |            
|                               |  | 2010                            |             |   | 2011 |     |             | 2012 | 
|Balance at beginning of period |  | Ps.                             | (16,516,604 | ) |      | Ps. | (19,002,607 | )    |  | Ps | (23,358,822 | )
|Increases recorded in expenses |  |                                 | (8,777,914  | ) |      |     | (12,111,915 | )    |  |    | (12,009,580 | )
|Charges against the allowance  |  |                                 | 5,903,396   |   |      |     | 8,252,701   |      |  |    | 10,534,631  |  
|Translation effect             |  |                                 | 388,515     |   |      |     | (497,001    | )    |  |    | 2,395,627   |  
|                               |  |                                 |             |   |      |     |             |      |  |    |             |  
|Balance at end of period       |  | Ps.                             | (19,002,607 | ) |      | Ps. | (23,358,822 | )    |  | Ps | (22,438,144 | )
|                               |  |                                 |             |   |      |     |             |      |  |    |             |  



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c) The following table shows a breakdown of accounts receivable based on their age at December 31, 2011
and 2012, for subscribers and distributors:



|                  |  |       |               |  |                                            |  |               |           |  |  |               |  |  |            |              |  |                     |  |              |  |  |  |               | 
|----------------- |  | ----- | ------------- |  | ------------------------------------------ |  | ------------- | --------- |  |  | ------------- |  |  | ---------- | ------------ |  | ------------------- |  | ------------ |  |  |  | ------------- | 
|                  |  | Total |               |  | Unbilled servicesprovided about tocome due |  |               | 1-30 days |  |  | 30-60 days    |  |  | 61-90 days |              |  | Greater than90 days | 
|December 31, 2011 |  |       | Ps.92,744,737 |  |                                            |  | Ps.50,330,552 |           |  |  | Ps.16,468,777 |  |  |            | Ps.3,655,367 |  |                     |  | Ps.2,011,698 |  |  |  | Ps.20,278,343 | 
|December 31, 2012 |  |       | Ps.96,136,373 |  |                                            |  | Ps.50,031,727 |           |  |  | Ps.18,419,119 |  |  |            | Ps.3,473,650 |  |                     |  | Ps.2,223,077 |  |  |  | Ps.21,988,800 | 

6. Inventories, net

An analysis of inventories at December 31, 2011 and 2012 is as follows:



|                                                       |  |      |            |   |      |     |            |  
|------------------------------------------------------ |  | ---- | ---------- | - | ---- | --- | ---------- | -
|                                                       |  | 2011 |            |   | 2012 |    
|Mobile phones, accessories, cards and other materials  |  | Ps.  | 36,479,153 |   |      | Ps. | 30,976,789 |  
|Less: Reserve for obsolete and slow-moving inventories |  |      | (2,337,836 | ) |      |     | (2,278,969 | )
|                                                       |  |      |            |   |      |     |            |  
|Total                                                  |  | Ps.  | 34,141,317 |   |      | Ps. | 28,697,820 |  
|                                                       |  |      |            |   |      |     |            |  

7. Other assets, net

a) An analysis of other assets at December 31, 2011 and 2012 is as follows:



|                                                                         |  |      |            |  |      |     |            | 
|------------------------------------------------------------------------ |  | ---- | ---------- |  | ---- | --- | ---------- | 
|                                                                         |  | 2011 |            |  | 2012 |    
|Current portion:                                                         |  |      |            |  |      |     |            | 
|Advances to suppliers (including advertising, insurance and maintenance) |  | Ps.  | 10,515,154 |  |      | Ps. | 10,855,588 | 
|Other                                                                    |  |      | 331,595    |  |      |     | 415,875    | 
|                                                                         |  |      |            |  |      |     |            | 
|                                                                         |  | Ps.  | 10,846,749 |  |      | Ps. | 11,271,463 | 
|                                                                         |  |      |            |  |      |     |            | 
|Non-current portion:                                                     |  |      |            |  |      |     |            | 
|Recoverable taxes                                                        |  | Ps.  | 4,755,091  |  |      | Ps. | 3,305,273  | 
|Advance payments for the use of fiber optics                             |  |      | 1,472,364  |  |      |     | 1,307,791  | 
|Prepaid expenses                                                         |  |      | 8,828,966  |  |      |     | 11,116,090 | 
|                                                                         |  |      |            |  |      |     |            | 
|Total                                                                    |  | Ps.  | 15,056,421 |  |      | Ps. | 15,729,154 | 
|                                                                         |  |      |            |  |      |     |            | 

For the years ended December 31, 2010, 2011 and 2012, the amortization expense for other assets was Ps.314,652,
Ps.398,383 and Ps.244,538, respectively.



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8. Property, Plant and Equipment, net

An analysis of property, plant and equipment at December 31, 2011 and 2012 is as follows:



|                                                            |  |      |              |   |      |     |              |  
|----------------------------------------------------------- |  | ---- | ------------ | - | ---- | --- | ------------ | -
|                                                            |  | 2011 |              |   | 2012 |    
|Plant and equipment                                         |  | Ps.  | 412,001,302  |   |      | Ps. | 467,496,768  |  
|Land and buildings                                          |  |      | 55,250,523   |   |      |     | 52,538,431   |  
|Other assets                                                |  |      | 65,455,040   |   |      |     | 67,966,573   |  
|                                                            |  |      |              |   |      |     |              |  
|                                                            |  |      | 532,706,865  |   |      |     | 588,001,772  |  
|Less: Accumulated depreciation                              |  |      | (135,463,376 | ) |      |     | (149,560,172 | )
|                                                            |  |      |              |   |      |     |              |  
|Net                                                         |  |      | 397,243,489  |   |      |     | 438,441,600  |  
|Construction in process and advances to equipment suppliers |  |      | 50,848,277   |   |      |     | 45,967,567   |  
|Inventory for operation of the plant                        |  |      | 17,995,007   |   |      |     | 16,025,105   |  
|                                                            |  |      |              |   |      |     |              |  
|Total                                                       |  | Ps.  | 466,086,773  |   |      | Ps. | 500,434,272  |  
|                                                            |  |      |              |   |      |     |              |  

a) An analysis of property, plant and equipment, net at December 31, 2010, 2011 and 2012 is as follows:



|                          |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |             |   |       |     |             |   |  |     |              |  
|------------------------- |  | ------------------ | ----------- | - | ----------------- | --- | ---------- | ------------ |  | --- | ---------------------------------------------------- | - |  | ------------------------------------ | ----------- | - | ----- | --- | ----------- | - |  | --- | ------------ | -
|Cost                      |  | Plant andequipment |             |   | Land andbuildings |     |            | Other assets |  |     | Constructionin processand advancesto plant suppliers |   |  | Inventories foroperation of theplant |             |   | Total |    
|At January 1, 2010        |  | Ps.                | 346,777,412 |   |                   | Ps. | 43,018,123 |              |  | Ps. | 52,666,762                                           |   |  | Ps.                                  | 34,678,740  |   |       | Ps. | 8,544,942   |   |  | Ps. | 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  |  
|                          |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |             |   |       |     |             |   |  |     |              |  
|Additions                 |  |                    | 72,736,548  |   |                   |     | 9,680,678  |              |  |     | 13,492,397                                           |   |  |                                      | 38,419,430  |   |       |     | 18,904,313  |   |  |     | 153,233,366  |  
|Retirements and transfers |  |                    | (16,186,099 | ) |                   |     | (350,418   | )            |  |     | (2,262,172                                           | ) |  |                                      | (30,439,838 | ) |       |     | (13,311,357 | ) |  |     | (62,549,884  | )
|Effect of translation     |  |                    | 18,527,029  |   |                   |     | 1,732,445  |              |  |     | 2,912,022                                            |   |  |                                      | 1,786,354   |   |       |     | 375,886     |   |  |     | 25,333,736   |  
|                          |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |             |   |       |     |             |   |  |     |              |  
|At December 31, 2011      |  | Ps.                | 412,001,302 |   |                   | Ps. | 55,250,523 |              |  | Ps. | 65,455,040                                           |   |  | Ps.                                  | 50,848,277  |   |       | Ps. | 17,995,007  |   |  | Ps. | 601,550,149  |  
|                          |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |             |   |       |     |             |   |  |     |              |  
|Additions                 |  |                    | 104,483,020 |   |                   |     | 2,434,107  |              |  |     | 9,923,836                                            |   |  |                                      | 19,735,005  |   |       |     | 11,603,283  |   |  |     | 148,179,251  |  
|Retirements and transfers |  |                    | (25,693,072 | ) |                   |     | (1,219,353 | )            |  |     | (5,413,649                                           | ) |  |                                      | (21,177,560 | ) |       |     | (12,647,522 | ) |  |     | (66,151,156  | )
|NET acquisition           |  |                    | 33,098,556  |   |                   |     | 255,018    |              |  |     |                                                      |   |  |                                      | 128,643     |   |       |     |             |   |  |     | 33,482,217   |  
|Effect of translation     |  |                    | (56,393,038 | ) |                   |     | (4,181,864 | )            |  |     | (1,977,322                                           | ) |  |                                      | (3,588,130  | ) |       |     | (925,663    | ) |  |     | (67,066,017  | )
|                          |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |             |   |       |     |             |   |  |     |              |  
|At December 31, 2012      |  | Ps.                | 467,496,768 |   |                   | Ps. | 52,538,431 |              |  | Ps. | 67,987,905                                           |   |  | Ps.                                  | 45,946,235  |   |       | Ps. | 16,025,105  |   |  | Ps. | 649,994,444  |  
|                          |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |             |   |       |     |             |   |  |     |              |  



F-28



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##### Table of Contents

|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|--------------------------- |  | ------------------ | ----------- | - | ----------------- | --- | ---------- | ------------ |  | --- | ---------------------------------------------------- | - |  | ------------------------------------ | ---------- |  | ----- | --- | ---------- | - |  | --- | ----------- | -
|Cost                        |  | Plant andequipment |             |   | Land andbuildings |     |            | Other assets |  |     | Constructionin processand advancesto plant suppliers |   |  | Inventories foroperation of theplant |            |  | Total |    
|Depreciation and impairment |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|At January 1, 2010          |  | Ps.                | 56,241,771  |   |                   | Ps. | 1,403,482  |              |  | Ps. | 9,330,713                                            |   |  |                                      |            |  |       | Ps. | (22,619    | ) |  | Ps. | 66,953,347  |  
|Depreciation of the year    |  |                    | 63,414,234  |   |                   | $   | 2,933,314  |              |  |     | 13,913,627                                           |   |  |                                      |            |  |       |     | 33,515     |   |  |     | 80,294,690  |  
|Retirements and transfers   |  |                    | (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  |  
|Depreciation of the year    |  |                    | 68,660,250  |   |                   |     | 1,396,102  |              |  |     | 12,581,222                                           |   |  |                                      |            |  |       |     | 4,626      |   |  |     | 82,642,200  |  
|Retirements and transfers   |  |                    | (30,664,840 | ) |                   |     | (53,910    | )            |  |     | (3,211,913                                           | ) |  |                                      |            |  |       |     | (7,988     | ) |  |     | (33,938,651 | )
|Effect of translation       |  |                    | 11,130,430  |   |                   |     | 318,881    |              |  |     | 1,590,024                                            |   |  |                                      |            |  |       |     | 7,948      |   |  |     | 13,047,283  |  
|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|At December 31, 2011        |  | Ps.                | 107,951,128 |   |                   | Ps. | 1,838,362  |              |  | Ps. | 25,687,189                                           |   |  |                                      |            |  |       | Ps. | (13,303    | ) |  | Ps. | 135,463,376 |  
|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|Depreciation of the year    |  |                    | 83,905,974  |   |                   |     | 1,097,460  |              |  |     | 7,282,983                                            |   |  |                                      |            |  |       |     | (18,142    | ) |  |     | 92,268,275  |  
|Retirements and transfers   |  |                    | (22,753,727 | ) |                   |     | (306,881   | )            |  |     | (6,297,626                                           | ) |  |                                      |            |  |       |     | (24,451    | ) |  |     | (29,382,685 | )
|Effect of translation       |  |                    | (43,392,735 | ) |                   |     | (1,641,993 | )            |  |     | (3,740,236                                           | ) |  |                                      |            |  |       |     | (13,830    | ) |  |     | (48,788,794 | )
|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|At December 31, 2012        |  | Ps.                | 125,710,640 |   |                   | Ps. | 986,948    |              |  | Ps. | 22,932,310                                           |   |  |                                      |            |  |       | Ps. | (69,726)   |   |  | Ps. | 149,560,172 |  
|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|Book value                  |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|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 |  
|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|At December 31, 2011        |  | Ps.                | 304,050,174 |   |                   | Ps. | 53,412,161 |              |  | Ps. | 39,767,851                                           |   |  | Ps.                                  | 50,848,277 |  |       | Ps. | 18,008,310 |   |  | Ps. | 466,086,773 |  
|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  
|At December 31, 2012        |  | Ps.                | 341,786,128 |   |                   | Ps. | 51,551,483 |              |  | Ps. | 45,034,263                                           |   |  | Ps.                                  | 45,967,567 |  |       | Ps. | 16,094,831 |   |  | Ps. | 500,434,272 |  
|                            |  |                    |             |   |                   |     |            |              |  |     |                                                      |   |  |                                      |            |  |       |     |            |   |  |     |             |  

b) At December 31, 2011 and 2012, property, plant and equipment include the following assets under capital leases:



|                            |  |      |          |   |      |     |          |  
|--------------------------- |  | ---- | -------- | - | ---- | --- | -------- | -
|                            |  | 2011 |          |   | 2012 |    
|Assets under capital leases |  | Ps.  | 946,583  |   |      | Ps. | 848,622  |  
|Accumulated depreciation    |  |      | (559,696 | ) |      |     | (409,105 | )
|                            |  |      |          |   |      |     |          |  
|                            |  | Ps.  | 386,887  |   |      | Ps. | 439,517  |  
|                            |  |      |          |   |      |     |          |  

c) In view of the major advances and changes in telecommunications equipment technology, the Company periodically
reevaluates the estimated useful lives of its plant and adjusts the remaining useful lives. 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, 2010 and 2011 of Ps.4,461,748 and Ps.6,291,113.

d) At December 31, 2012, Embratel has real property and
other equipment delivered in guarantee of legal proceedings in the amount of Ps.3,518,426 (Ps.2,609,023 in 2011).

e) Relevant information
related to the computation of the capitalized borrowing costs is as follows:



|                                                        |  |                 |            |   |      |     |            |      |  |     |            |  
|------------------------------------------------------- |  | --------------- | ---------- | - | ---- | --- | ---------- | ---- |  | --- | ---------- | -
|                                                        |  | At December 31, |           
|                                                        |  | 2010            |            |   | 2011 |     |            | 2012 | 
|Amount invested in the acquisition of qualifying assets |  | Ps.             | 41,976,901 |   |      | Ps. | 51,240,658 |      |  | Ps. | 52,849,800 |  
|Capitalized interest                                    |  |                 | 2,540,837  |   |      |     | 3,845,609  |      |  |     | 3,152,811  |  
|Capitalization rate                                     |  |                 | 6.1        | % |      |     | 7.5        | %    |  |     | 6.0        | %



F-29



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##### Table of Contents

Capitalized interest is being amortized over a period of 7 years, which is the estimated useful life of the
plant.

f) In January 2012, Star One entered into an agreement denominated in U.S. dollars with a manufacturer for the construction and
launching of the Star One C-4 satellite. The cost of the project is estimated to be approximately Ps.3,772,929 (US$290 million). At December 31, 2012, the amount of construction in process associated with this project amounts to Ps.1,386,755.

9. Intangible and Other Assets

a) An analysis of intangible and other assets at December 31, 2010, 2011 and 2012 is as follows:



|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                  |                |   |                       |     |            |   |  |     |             |  
|-------------------------- |  | --------------------------- | ----------- | - | ------------ | --- | --------- | --------- |  | --- | ----------------------- | - |  | ------------------------------------------------ | -------------- | - | --------------------- | --- | ---------- | - |  | --- | ----------- | -
|                           |  | At December 31, 2010        |            
|                           |  | Balance atbeginning of year |             |   | Acquisitions |     |           | Disposals |  |     | Amortizationof the year |   |  | Effect oftranslation of
foreignsubsidiaries, net |                |   | Balance atend of year |    
|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  |  
|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                  |                |   |                       |     |            |   |  |     |             |  



|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     |             |  
|-------------------------- |  | --------------------------- | ----------- | - | ------------ | --- | --------- | --------- |  | --- | ----------------------- | - |  | ---------------------------------------------- | -------------- | - | --------------------- | --- | ------------ | - |  | --- | ----------- | -
|                           |  | At December 31, 2011        |            
|                           |  | Balance atbeginning of year |             |   | Acquisitions |     |           | Disposals |  |     | Amortizationof the year |   |  | Effect ofTranslationOf foreignsubsidiaries,net |                |   | Balance atend of year |    
|Licenses and rights of use |  | Ps.                         | 109,350,107 |   |              | Ps. | 2,628,249 |           |  |     | Ps.(281,397)            |   |  |                                                |                |   |                       |     |              |   |  | Ps. | 111,696,959 |  
|Effect of translation      |  |                             | 4,714,144   |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     | Ps.1,231,521 |   |  |     | 5,945,665   |  
|Accumulated amortization   |  |                             | (69,543,393 | ) |              |     |           |           |  |     | 163,060                 |   |  |                                                | Ps.(9,731,392) |   |                       |     |              |   |  |     | (79,111,725 | )
|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     |             |  
|Net                        |  |                             | 44,520,858  |   |              |     | 2,628,249 |           |  |     | (118,337                | ) |  |                                                | (9,731,392     | ) |                       |     | 1,231,521    |   |  |     | 38,530,899  |  
|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     |             |  
|Trademarks                 |  |                             | 12,246,474  |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     | 12,246,474  |  
|Effect of translation      |  |                             | 491,056     |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     | (299,963     | ) |  |     | 191,093     |  
|Accumulated amortization   |  |                             | (8,205,653  | ) |              |     |           |           |  |     |                         |   |  |                                                | (1,225,060     | ) |                       |     |              |   |  |     | (9,430,713  | )
|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     |             |  
|Net                        |  |                             | 4,531,877   |   |              |     |           |           |  |     |                         |   |  |                                                | (1,225,060     | ) |                       |     | (299,963     | ) |  |     | 3,006,854   |  
|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     |             |  
|Goodwill                   |  |                             | 64,706,795  |   |              |     | 159,797   |           |  |     | (152,285                | ) |  |                                                |                |   |                       |     |              |   |  |     | 64,714,307  |  
|Effect of translation      |  |                             | 6,212,172   |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     | 2,111,954    |   |  |     | 8,324,126   |  
|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     |             |  
|Net                        |  | Ps.                         | 70,918,967  |   |              | Ps. | 159,797   |           |  | Ps. | (152,285                | ) |  |                                                |                |   |                       | Ps. | 2,111,954    |   |  | Ps. | 73,038,433  |  
|                           |  |                             |             |   |              |     |           |           |  |     |                         |   |  |                                                |                |   |                       |     |              |   |  |     |             |  



F-30



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##### Table of Contents

|                           |  |                             |             |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     |             |  
|-------------------------- |  | --------------------------- | ----------- | - | ------------ | --- | ---------- | --------- |  | --- | ----------------------- | - |  | ----------------------------------------------- | ---------- | - | --------------------- | --- | ---------- | - |  | --- | ----------- | -
|                           |  | At December 31, 2012        |            
|                           |  | Balance atbeginning of year |             |   | Acquisitions |     |            | Disposals |  |     | Amortizationof the year |   |  | Effect oftranslation of
foreignsubsidiaries,net |            |   | Balance atend of year |    
|Licenses and rights of use |  | Ps.                         | 111,696,959 |   |              | Ps. | 20,245,162 |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  | Ps. | 131,942,121 |  
|Effect of translation      |  |                             | 5,945,665   |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       | Ps. | (5,241,587 | ) |  |     | 704,078     |  
|Accumulated amortization   |  |                             | (79,111,725 | ) |              |     |            |           |  |     |                         |   |  | Ps.                                             | (9,482,044 | ) |                       |     |            |   |  |     | (88,593,769 | )
|                           |  |                             |             |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     |             |  
|Net                        |  |                             | 38,530,899  |   |              |     | 20,245,162 |           |  |     |                         |   |  |                                                 | (9,482,044 | ) |                       |     | (5,241,587 | ) |  |     | 44,052,430  |  
|                           |  |                             |             |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     |             |  
|Trademarks                 |  |                             | 12,246,474  |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     | 12,246,474  |  
|Effect of translation      |  |                             | 191,093     |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     | (273,659   | ) |  |     | (82,566     | )
|Accumulated amortization   |  |                             | (9,430,713  | ) |              |     |            |           |  |     |                         |   |  |                                                 | (1,589,880 | ) |                       |     |            |   |  |     | (11,020,593 | )
|                           |  |                             |             |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     |             |  
|Net                        |  |                             | 3,006,854   |   |              |     |            |           |  |     |                         |   |  |                                                 | (1,589,880 | ) |                       |     | (273,659   | ) |  |     | 1,143,315   |  
|                           |  |                             |             |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     |             |  
|Goodwill                   |  |                             | 64,714,307  |   |              |     | 31,347,978 |           |  | Ps. | (278,756                | ) |  |                                                 |            |   |                       |     |            |   |  |     | 95,783,529  |  
|Effect of translation      |  |                             | 8,324,126   |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     | (4,401,796 | ) |  |     | 3,922,330   |  
|                           |  |                             |             |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     |             |  
|Net                        |  | Ps.                         | 73,038,433  |   |              | Ps. | 31,347,978 |           |  | Ps. | (278,756                | ) |  |                                                 |            |   |                       | Ps. | (4,401,796 | ) |  | Ps. | 99,705,859  |  
|                           |  |                             |             |   |              |     |            |           |  |     |                         |   |  |                                                 |            |   |                       |     |            |   |  |     |             |  

b) The following is a description of the major changes in the Licenses and rights of use caption during the
years ended December 31, 2010, 2011 and 2012:

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 radio frequency 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.

2011 Acquisitions

i) During the
first quarter of 2011, the Company won a public bid to provide mobile telecommunications 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. The upfront amount paid was Ps.926 million and no further payments need to be made.

ii) As a consequence of the
acquisition of Digicel Group described in Note 10, AMX recognized a license for an amount of Ps.1,149,119 (U.S.$82.1 million approximately).

2012 Acquisitions

i). In January 2012, Telmex
Colombia acquired a new TV license for a period of 8 years, expiring in 2020. The amount paid was Ps.253,927.

ii) Upon consolidation of Net
Serviços, the Company recognized a license for an amount of Ps. 12,414,914. Given recent changes in the telecommunications law, licenses in Brazil can be renewed indefinitely at nominal cost. Thus, the value assigned to these licenses in NET
purchase accounting is not amortized.



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iii) In September 2012, Claro Brazil renewed certain contracts related with its licenses of radio frequency
of 450 MHz, and such licenses cover the following states of Brazil Acre, Rondonia, Tacantins, Bahia, Paraná, Santa Catarina, Rio de Janeiro, Espíritu Santo, Sao Paulo, Amazonas, Maranha, Roraima, Amapá and Pará. Such
licenses expire in October 2027.

Also Claro Brazil acquired licenses related with the 4G (fourth generation) services, or Broad band of 2,500
MHz to provide 4G services in Brazilian territory, except for the Brazilian state of Amazonas. Such licenses expire between June 2014 and October 2027.

Additionally, there were renewals of the licenses of 850 MHz which expired during 2012 and 2013. These renewals expire in October, 2027.

The amount paid for these renewals was Ps. 5,710,116.

c) Amortization of licenses, rights of use
and trademarks for the years ended December 31, 2010, 2011 and 2012 amounted to Ps.10,461,985, Ps.10,956,452, and Ps.11,071,924, respectively.

10. Investments in Subsidiaries and Associates

a) An analysis of this caption is as follows



|                                          |  |                 |            |  |      |     |            | 
|----------------------------------------- |  | --------------- | ---------- |  | ---- | --- | ---------- | 
|                                          |  | At December 31, |           
|                                          |  | 2011            |            |  | 2012 |    
|Investments in:                           |  |                 |            |  |      |     |            | 
|Net Serviços de Comunicação, S.A. (NET) |  | Ps.             | 53,055,002 |  |      |     |           | 
|KoninKlijke KPN N.V. (KPN)              |  |                 |            |  |      | Ps. | 55,007,474 | 
|Telekom Austria AG (Telekom Austria)    |  |                 |            |  |      |     | 16,752,724 | 
|Other investments                         |  |                 | 1,163,021  |  |      |     | 1,356,087  | 
|                                          |  |                 |            |  |      |     |            | 
|Total                                     |  | Ps              | 54,218,023 |  |      | Ps. | 73,116,285 | 
|                                          |  |                 |            |  |      |     |            | 

b) The following is a summary of changes in the investment in the Companys associates during the years ended
December 31, 2010, 2011 and 2012:



|                |  |                             |                |  |                                        |  |                 |                                          |  |  |                      |  |  |                            |              |  |  |  |                | 
|--------------- |  | --------------------------- | -------------- |  | -------------------------------------- |  | --------------- | ---------------------------------------- |  |  | -------------------- |  |  | -------------------------- | ------------ |  |  |  | -------------- | 
|                |  | Balance atDecember 31, 2009 |                |  | Equity interestacquired                |  |                 | Equity interest innet income ofassociate |  |  | Effect oftranslation |  |  | Balance atDecember 31,2010 |             
|                |  |                             |                |  |                                       
|NET             |  |                             | Ps. 16,567,698 |  |                                        |  | Ps. 31,524,315  |                                          |  |  | Ps. 1,432,726        |  |  |                            | Ps. 150,641  |  |  |  | Ps. 49,675,380 | 
|                |  |                             |                |  |                                        |  |                 |                                          |  |  |                      |  |  |                            |              |  |  |  |                | 
|                |  |                             |                |  |                                       
|                |  | Balance atDecember 31, 2010 |                |  | Equity interestacquired                |  |                 | Equity interest innet income ofassociate |  |  | Effect oftranslation |  |  | Balance atDecember 31,2011 |             
|                |  |                             |                |  |                                       
|NET             |  |                             | Ps. 49,675,380 |  |                                        |  | Ps. 1,185,359   |                                          |  |  | Ps. 1,856,331        |  |  |                            | Ps. 337,932  |  |  |  | Ps. 53,055,002 | 
|                |  |                             |                |  |                                        |  |                 |                                          |  |  |                      |  |  |                            |              |  |  |  |                | 
|                |  |                             |                |  |                                       
|                |  | Balance atDecember 31, 2011 |                |  | Equity
interestacquired(de-recognized) |  |                 | Equity interest innet
income ofassociate |  |  | Effect oftranslation |  |  | Balance atDecember 31,2012 |             
|                |  |                             |                |  |                                       
|NET             |  |                             | Ps.53,055,002  |  |                                        |  | Ps.(53,055,002) |                                          |  |  |                     |  |  |                            |             |  |  |  |               | 
|                |  |                             |                |  |                                        |  |                 |                                          |  |  |                      |  |  |                            |              |  |  |  |                | 
|                |  |                             |                |  |                                       
|KPN             |  |                             |               |  |                                        |  | Ps. 55,081,964  |                                          |  |  | Ps. 408,179          |  |  |                            | Ps.(482,669) |  |  |  | Ps.55,007,474  | 
|                |  |                             |                |  |                                        |  |                 |                                          |  |  |                      |  |  |                            |              |  |  |  |                | 
|                |  |                             |                |  |                                       
|Telekom Austria |  |                             |               |  |                                        |  | Ps. 16,363,888  |                                          |  |  | Ps. 380,334          |  |  |                            | Ps. 8,502    |  |  |  | Ps.16,752,724  | 
|                |  |                             |                |  |                                        |  |                 |                                          |  |  |                      |  |  |                            |              |  |  |  |                | 



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c) The following is a description of the major acquisitions during the years ended December 31, 2010,
2011 and 2012:

Acquisitions 2010

Net Serviços de Comunicação, S.A. (NET)

The Company accounted for its
holdings in NET using the equity method of accounting in both 2010 and 2011 given that it did not exercise voting control over NET. During 2012, given a change in the Brazilian telecommunications laws, the Company was able to exercise an option
whereby it obtained control and began consolidating NET in 2012.

In October 2010, AMXs subsidiary, Embratel, purchased 155,415,666
preferred shares, no par value, of NET through a public offer for R$ 3,575 million (Ps.26,216 million at the exchange rate of the end of October 2010). In November 2010, Embratel purchased 3,988,819 preferred shares without voting rights for
R$93 million (Ps.677 million at the exchange rate of the end of November 2010). Additionally, in December 2010, Embratel purchased 27,143,246 preferred shares, without voting rights for R$625 million (Ps.4,632 million at the exchange rate of the end
of December 2010). At December 31, 2010, AMX through Embrapar and Embratel had a shareholding (direct and indirect) of 84.8% in NET.

The
following tables show condensed consolidated financial information of NET for the year ended December 31, 2010:

Net
Serviços de Comunicação, S.A.

Condensed Consolidated Statements of Income

(Thousand of Mexican pesos)



|                             |  |                             |                | 
|---------------------------- |  | --------------------------- | -------------- | 
|                             |  | Year endedDecember 31, 2010 |               
|Operating revenues, net      |  |                             | Ps. 36,051,290 | 
|Operating costs and expenses |  |                             | 31,510,857     | 
|                             |  |                             |                | 
|Operating income             |  |                             | 4,540,433      | 
|                             |  |                             |                | 
|Net profit                   |  |                             | Ps. 2,559,185  | 
|                             |  |                             |                | 

Acquisitions 2011

a) NET

As described above, in 2010 AMXs subsidiary, Embratel, purchased 155,415,666
preferred shares, no par value, of NET through a public offer. 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$ 4.3 billion (Ps. 31,525 million at
the exchange rate as of January 13, 2011) paid in cash.

At December 31, 2011, AMX through Embrapar and Embratel had a shareholding
(direct and indirect) of 87.5% in NET.



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The following tables show condensed consolidated financial information of NET as of and for the year ended
December 31, 2011:

Net Serviços de Comunicação, S.A.

Condensed Consolidated Statements of Financial Position

(Thousand of Mexican pesos)



|                                |  |                    |               | 
|------------------------------- |  | ------------------ | ------------- | 
|                                |  | As of December 31, |              
|                                |  | 2011               |              
|Assets                          |  |                    |               | 
|Current assets                  |  |                    | Ps.12,150,510 | 
|Non current assets              |  |                    | 63,961,551    | 
|                                |  |                    |               | 
|Total of assets                 |  |                    | Ps.76,112,061 | 
|                                |  |                    |               | 
|Liabilities and equity          |  |                    |               | 
|Current liabilities             |  |                    | Ps.12,968,905 | 
|Non current liabilities         |  |                    | 25,857,182    | 
|                                |  |                    |               | 
|Total of liabilities            |  |                    | 38,826,087    | 
|Total of equity                 |  |                    | 37,285,974    | 
|                                |  |                    |               | 
|Total of liabilities and equity |  |                    | Ps.76,112,061 | 
|                                |  |                    |               | 

Condensed Consolidated Statements of Income



|                             |  |                             |               | 
|---------------------------- |  | --------------------------- | ------------- | 
|                             |  | Year endedDecember 31, 2011 |              
|Operating revenues, net      |  |                             | Ps.45,631,540 | 
|Operating costs and expenses |  |                             | 41,117,974    | 
|                             |  |                             |               | 
|Operating income             |  |                             | 4,513,566     | 
|                             |  |                             |               | 
|Net profit                   |  |                             | Ps. 2,005,330 | 
|                             |  |                             |               | 

b) Other acquisition in 2011

Star One S.A.

In July 2011, Empresa Brasileira de Telecomunicações S.A.
(Embratel) acquired a 20% interest in Star One S.A. (Star One) from GE Satellite Holdings LLC and its affiliates for a total purchase price of Ps.2,716 million (US$ 235 million). Star One is a Brazilian company that provides
satellite services in Brazil. Prior to that date, Embratel owned the remaining 80% interest in Star One, so that Embratel now owns all of the shares.

Digicel Group Limited

In November 2011, América Móvil acquired 100% of Digicel
Group Limited and its affiliates (Digicel) operations in Honduras and sold its operations in Jamaica to Digicel. The net amount paid was Ps.4,733,385.

Acquisitions 2012

a) Acquisition of Control over NET

On January 26, 2012, the National Telecommunications Agency of Brazil, expressed its consent to the transfer of control of NET. This authorization
then allowed Embrapar to exercise a call option on the shares held by GB Empreendimentos e Participaçoes SA (GB), a company that previously controlled NET, which until that time



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was controlled by Globo Cominicação e Particpaçoes S.A. (Globo). Once this option was exercised, Embrapar and its subsidiary Embratel would have voting control of NET. The
ability to exercise the option resulted in the Company effectively controlling NET.

On March 5, 2012 Embrapar exercised the option and
purchased ordinary shares of GB. The acquired shares represented 5.5% of the ordinary shares. As a result of this acquisition, Embrapar reached 54.54% in the voting capital of GB. As a result of this transaction, America Movil held an equity
interest (directly and indirectly) in NET of 88.0%. Embrapar held an equity interest (directly and indirectly) in NET of 95.23%.

As a result
of AMX obtaining control of NET, the Company recognized the acquisition as a business combination in accordance with IFRS 3 based on the fair value of NETs assets acquired, liabilities assumed and the non-controlling interest. Accordingly, the
Company derecognized its equity method investment in NET. The difference between its carrying value and the fair value of the non-controlling interest at the acquisition date was not material. The fair value of the assets acquired and liabilities
assumed was consolidated into the Companys statement of financial position, and NETs operating results were consolidated in the statement of comprehensive income beginning January 1, 2012.

The acquisition cost of NET consists of the fair value of the equity method investment previously held, plus the amount of cash required to exercise the
option to control NET, as shown in the table below.

The estimated fair value of the net assets acquired is as follows:



|                                                                      |  |  |               |  
|--------------------------------------------------------------------- |  |  | ------------- | -
|Current assets                                                        |  |  | Ps.10,332,298 |  
|Plant and equipment                                                   |  |  | 33,482,219    |  
|Intangibles                                                           |  |  | 19,287,138    |  
|Others non currents assets                                            |  |  | 2,821,826     |  
|                                                                      |  |  |               |  
|Total of assets acquired                                              |  |  | 65,923,481    |  
|                                                                      |  |  |               |  
|Liabilities and account payable short-term                            |  |  | 16,062,621    |  
|Liabilities and account payable short-term                            |  |  | 6,998,214     |  
|Long term debt                                                        |  |  | 16,165,150    |  
|                                                                      |  |  |               |  
|Total of liabilities assumed                                          |  |  | 39,225,985    |  
|                                                                      |  |  |               |  
|Fair value of net assets identified                                   |  |  | 26,697,496    |  
|Fair value of non controlling interest                                |  |  | (3,798,181    | )
|Goodwill recognized on acquisition                                    |  |  | 30,601,656    |  
|Payment to obtain controlling interest of NET                         |  |  | (47,951       | )
|                                                                      |  |  |               |  
|Fair value of investment in NET de-recognized at the acquisition date |  |  | Ps.53,453,020 |  
|                                                                      |  |  |               |  

The amounts of revenue and net profit of NET recorded in the Companys 2012 consolidated financial statements since
the January 1, 2012 date of consolidation were Ps. 52,722,225 and Ps. 2,661,622, respectively.

a) KoninKlijke KPN N.V.
(KPN).

On May 29, 2012, AMOV Europa B.V. (AMOV), a wholly-owned subsidiary of AMX, commenced a partial tender
offer in cash to all holders of ordinary shares of Koninklijke KPN N.V. (KPN). KPN is the leading telecommunications service provider in The Netherlands, which offers fixed-line and wireless telecommunications services, internet and Pay
TV to consumers, and end-to-end telecommunications services to business customers. AMOV offered to purchase up to the number of shares that would result in AMOV and América Móvil holding 393,283,000 shares (representing a total of up
to approximately 27.7% of all outstanding shares of KPN). The offer expired on June 27, 2012, and more than a sufficient number of shares needed for us to reach the maximum



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ownership amount of 27.7% of the outstanding shares was tendered. Upon closing of the tender offer, the total aggregate cost of the Companys investment in KPN is approximately
3,047 million (Ps.52.2 billion).

The following table shows condensed consolidated financial information of KPN:

KoninKlijke KPN N.V.

Condensed Consolidated Statements of Financial Position

(Thousand of
Mexican pesos)



|                                |  |                        |             | 
|------------------------------- |  | ---------------------- | ----------- | 
|                                |  | As of December 31,2012 |            
|Assets                          |  |                        |             | 
|Current assets                  |  | Ps.                    | 53,250,283  | 
|Non current assets              |  |                        | 331,997,809 | 
|                                |  |                        |             | 
|Total of assets                 |  | Ps.                    | 385,248,092 | 
|                                |  |                        |             | 
|Liabilities and equity          |  |                        |             | 
|Current liabilities             |  | Ps.                    | 100,656,441 | 
|Non current liabilities         |  |                        | 242,291,506 | 
|                                |  |                        |             | 
|Total of liabilities            |  |                        | 342,946,947 | 
|Total of equity                 |  |                        | 42,301,145  | 
|                                |  |                        |             | 
|Total of liabilities and equity |  | Ps.                    | 385,248,092 | 
|                                |  |                        |             | 

The Companys equity method purchase price allocation is preliminary in nature, in that its final determination of
the fair value of non-monetary assets has yet to be completed. The Company is currently in the process of making the necessary assessments in order to determine the specific fair value of the underlying net assets acquired in its investment in KPN.

At December 31, 2012, the Company holds 29.77% of the outstanding shares of KPN.

As discussed in Note 2 b) ii), the Companys policy is to evaluate at each reporting date, whether there is any objective evidence that an
investment in associate is impaired. If there is a potential impairment, the Company calculates the amount of impairment loss as the difference between the recoverable amount of the associate and its carrying value and recognizes the impairment loss
in its share of profit or loss of the associate in the statement of comprehensive income.

The Company owns 422,559,000 shares of KPN, with a
carrying value of Ps. 55.0 billion as of December 31, 2012. KPNs shares are traded on the Amsterdam Stock Exchange, and the closing price for such shares was 3.53 per share at December 31, 2012, equating to a Level 1 fair
value of the Companys investment in KPN of Ps. 22.6 billion at December 31, 2012 exchange rates. As of December 31, 2012, the carrying value of the investment in KPN was Ps. 28.0 billion in excess of its Level 1 fair value. The Level
1 fair value of KPN was Ps.19.0 billion as of April 18, 2013. Under IAS 39, either a significant or a prolonged decline of the Level 1 fair value of an equity security below its carrying value is objective evidence of impairment. Impairment is
then recognized as the difference between the carrying value of the equity investment and the greater of its Level 1 fair value and the underlying equity investments value in use.

The Company has performed a value-in-use computation for its equity method investment in KPN as of December 31, 2012. The value-in-use computation was based in-part on KPNs actual financial
results for 2012 and financial projections for the years 2013 to 2015. Beyond the three-year period of the KPN projections, free-cash flow was projected by the Company at 2.5% (nominal) to perpetuity. The Company applied a discount rate of 7.6%
(nominal) to the projected free cash flows of KPN, which is the estimated weighted average cost of capital. Based on the computation performed, a value in use of the Companys 29.7% ownership interest of Ps.55.9 billion was estimated as of
December 31, 2012, thus no impairment charge was required in the Companys 2012 consolidated financial statements.



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##### Table of Contents

b) Telekom Austria AG (Telekom Austria)

On June 15, 2012, the Company agreed to acquire approximately 21% of the outstanding shares of Telekom Austria AG (Telekom Austria) from
Marathon Zwei Beteiligungs GmbH, a wholly-owned subsidiary of RPR Privatstiftung, a private trust established by Mr. Ronny Pecik. Under the agreement, the Company acquired 5% of the outstanding shares of Telekom Austria, and the right to
acquire additional shares. On September 25, 2012, the Company exercised this right and acquired approximately 16% of the outstanding shares of Telekom Austria, after receiving the required regulatory approvals. As of September 30, 2012,
the Company held 22.76% of the outstanding shares of Telekom Austria. The total aggregate costs of the Companys investment in Telekom Austria is approximately 954 million (Ps.16.4 billion). Telekom Austria provides
telecommunications services in Austria, Belarus, Bulgaria, Croatia, Liechtenstein, Macedonia, Serbia and Slovenia.

The Companys equity
method purchase price allocation is preliminary in nature, in that its final determination of the fair value of non-monetary assets has yet to be completed. The Company is currently in the process of making the necessary assessments in order to
determine the specific fair value of the underlying net assets acquired in its investment in Telekom Austria.

The Company owns 104,875,874
shares of Telekom Austria, with a carrying value of Ps. 16.8 billion as of December 31, 2012, which equates to a carrying value of Ps. 159.4 per share. Telekom Austria shares are traded on the Vienna Stock Exchange; however, the Company
purchased its investment in Telekom Austrias through a private transaction enabling the Company to obtain the size of the holdings it desired. The Company purchased 21,977,284 shares in June 2012 at Ps. 147.07 per share, which is the same
as the trading price per share on the day of that transaction. The Company then purchased its remaining shares in September 2012 at Ps. 160.63 per share, in comparison to a trading price of Ps. 125.28 per share on the day of closing. The
Level 1 fair value of the Companys investment in Telekom Austria is Ps. 10.4 billion as of December 31, 2012, which is Ps. 6.4 billion less than its carrying value. However, the Level 1 trading price of Telekom Austria is relatively
consistent with the trading price at the date that the Company exercised its option to obtain significant influence in September 2012. While the computation of the value-in-use of the Companys investment in Telecom Austria is ongoing, the
Company believes that it will recover the carrying value of such investment through its future value-in-use.

c) Other acquisitions 2012

DLA, Inc. (DLA)

On January 6, 2012, América Móvil entered into an agreement with Claxson Interactive Group, Inc. , and acquired as of such date 100% of the shares representing the capital stock of DLA,
Inc. (DLA). The amount paid was Ps.615,927 (US$ 50 million). DLA is a corporation involved in the development, integration and delivery of entertainment products made for digital distribution in Latin America.

Simple Mobile, Inc.

On June 19,
2012, our subsidiary Tracfone Wireless Inc. acquired 100% of the operations of Simple Mobile Inc. for approximately US$ 118.0 million (Ps.1,651.7 million). Simple Mobile, Inc. is a mobile virtual network operators (MVNOs) in the United States,
with more than 2.5 million customer activations.

d) On September 2012, the Company acquired an equity interest in other Mexican entities
for an amount of Ps.379,564.

11. Derivative Financial Instruments

To mitigate the risks of future increases in interest rates for the servicing of its debt, 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 is given as security in connection with these transactions. The weighted-average interest rate of the total debt is 4.2%.



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##### Table of Contents

An analysis of the derivative financial instruments contracted by the Company at December 31, 2011 and
2012 is as follows:



|                             |  |                            |        |  |                       |     |        |                            |  |     |                       |  |  |     |        |  
|---------------------------- |  | -------------------------- | ------ |  | --------------------- | --- | ------ | -------------------------- |  | --- | --------------------- |  |  | --- | ------ | -
|                             |  | At December 31,            |       
|                             |  | 2011                       |        |  | 2012                  |    
|Instrument                   |  | Notionalamount in millions |        |  | Fair valuein millions |     |        | Notionalamount 
inmillions |  |     | Fair valuein millions | 
|Swaps Dollar-Peso            |  | US                         | 2,801  |  |                       | Ps. | 8,182  |                            |  | US$ | 1,050                 |  |  | $   | 307    |  
|Swaps Euro-Peso              |  |                           | 306    |  |                       |     | 454    |                            |  |    | 263                   |  |  |     | 63     |  
|Swaps Euro-Dollar            |  |                            |        |  |                       |     |        |                            |  |    | 950                   |  |  |     | 79     |  
|Swaps Yen-Dollar             |  | ¥                          | 6,900  |  |                       |     | 6      |                            |  |     |                       |  |  |     |        |  
|Swaps Pound-Dollar           |  |                            |        |  |                       |     |        |                            |  | £   | 650                   |  |  |     | 2,331  |  
|Forwards Dollar-Peso         |  | US$                        | 3,408  |  |                       |     | 1,133  |                            |  |     |                       |  |  |     |        |  
|Forwards Pound-Peso          |  |                            | 25     |  |                       |     | 17     |                            |  |     |                       |  |  |     |        |  
|Forwards Euro-Dollar         |  |                            | 90     |  |                       |     | 2      |                            |  |     |                       |  |  |     |        |  
|                             |  |                            |        |  |                       |     |        |                            |  |     |                       |  |  |     |        |  
|Total Assets                 |  |                            |        |  |                       | Ps. | 9,794  |                            |  |     |                       |  |  | Ps. | 2,780  |  
|                             |  |                            |        |  |                       |     |        |                            |  |     |                       |  |  |     |        |  
|Interest rate swaps in Pesos |  | Ps.                        | 9,400  |  |                       | Ps. | (851   | )                          |  |     | Ps. 23,640            |  |  | $   | (2,495 | )
|Forwards Reales-Dollar       |  |                            | 50     |  |                       |     | (22    | )                          |  |     | 39                    |  |  |     | (26    | )
|Forwards Dollar-Peso         |  |                            |        |  |                       |     |        |                            |  | US$ | 10,538                |  |  |     | (1,827 | )
|Swaps Euro-Dollar            |  |                           | 955    |  |                       |     | (456   | )                          |  |     |                       |  |  |     |        |  
|Swaps Yen-Dollar             |  |                            |        |  |                       |     |        |                            |  | ¥   | 12,000                |  |  |     | (252   | )
|Swaps CHF-Euro               |  |                            |        |  |                       |     |        |                            |  |     | 270                   |  |  |     | (76    | )
|Swaps CHF-Dollar             |  |                            | 230    |  |                       |     | (63    | )                          |  |     | 230                   |  |  |     | (4     | )
|Interest rate swaps in Pesos |  | $                          | 12,840 |  |                       |     | (1,497 | )                          |  |     |                       |  |  |     |        |  
|Swaps Yen-Dollar             |  |                            |        |  |                       |     |        |                            |  |     | 1,000                 |  |  |     | (10)   |  
|Swaps GBP-Euro               |  |                            |        |  |                       |     |        |                            |  | £   | 1,220                 |  |  |     | (335   | )
|                             |  |                            |        |  |                       |     |        |                            |  |     |                       |  |  |     |        |  
|Total liability              |  |                            |        |  |                       | Ps. | (2,889 | )                          |  |     |                       |  |  | $   | (5,025 | )
|                             |  |                            |        |  |                       |     |        |                            |  |     |                       |  |  |     |        |  

The changes in the fair value of these derivative financial instruments for the years ended December 31, 2010, 2011
and 2012 amounted to a (loss) gain of Ps.(9,141,976), Ps.10,889,940 and Ps.(5,346,179), respectively, and such amounts are included in the statement of comprehensive 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 December 31, |           
|            |  | 2011            |            |  | 2012 |    
|Mexico      |  | Ps.             | 113,861    |  |      | Ps. | 114,605    | 
|Ecuador     |  |                 | 73,351     |  |      |     | 73,216     | 
|Brazil      |  |                 | 1,913,544  |  |      |     | 2,495,027  | 
|Puerto Rico |  |                 | 11,214,980 |  |      |     | 9,652,859  | 
|            |  |                 |            |  |      |     |            | 
|Total       |  | Ps.             | 13,315,736 |  |      | Ps. | 12,335,707 | 
|            |  |                 |            |  |      |     |            | 

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.



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##### Table of Contents

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 December 31, 2011 and 2012:



|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|--------------------------------------------------- |  | --------------------------- | ----------- | - | --------------------------- | --- | ------------ | --------------------------- |  | --- | ----------------------- | - |  | --- | ----------- | -
|                                                    |  | At December 31,             |            
|                                                    |  | 2011                        |             |   | 2012                        |    
|                                                    |  | Pensions andsum of benefits |             |   | Pensions andsum of benefits |     |              | Pensions andsum of benefits |  |     | Post-retirementbenefits |  
|Projected benefit obligation at beginning of year   |  | Ps.                         | 18,764,099  |   |                             | Ps. | 9,276,354    |                             |  | Ps. | 22,406,396              |   |  | Ps. | 10,564,264  |  
|Service cost                                        |  |                             | 257,771     |   |                             |     | 99,977       |                             |  |     | 196,551                 |   |  |     | 84,986      |  
|Financing cost on projected benefit obligation cost |  |                             | 1,104,092   |   |                             |     | 527,196      |                             |  |     | 989,029                 |   |  |     | 374,837     |  
|Actuarial loss                                      |  |                             | 1,637,459   |   |                             |     | 677,230      |                             |  |     | 3,327,101               |   |  |     | 296,506     |  
|Other amendments to plans                           |  |                             | (122,671    | ) |                             |     | 130,009      |                             |  |     | 3,121                   |   |  |     | 124,178     |  
|Payments from trust fund                            |  |                             |            |   |                             |     | (899,653     | )                           |  |     |                         |   |  |     | (2,902,053  | )
|Benefits paid                                       |  |                             | (1,714,500  | ) |                             |     | (472,949     | )                           |  |     | (1,490,571              | ) |  |     | (448,128    | )
|Effect of translation                               |  |                             | 2,480,146   |   |                             |     | 1,226,100    |                             |  |     | (1,570,017              | ) |  |     | (740,246    | )
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Projected benefit obligation at end of year         |  | Ps.                         | 22,406,396  |   |                             | Ps. | 10,564,264   |                             |  | Ps. | 23,861,610              |   |  | Ps. | 7,354,344   |  
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Projected benefit obligation total (PBO)            |  |                             |             |   |                             | Ps. | 32,970,660   |                             |  |     |                         |   |  | Ps. | 31,215,954  |  
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Accumulated benefit obligation (ABO)                |  |                             |             |   |                             | Ps. | 24,210,778   |                             |  |     |                         |   |  | Ps. | 24,640,044  |  
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Changes in plan assets:                             |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Established fund at beginning of year               |  | Ps.                         | 12,786,011  |   |                             | Ps. |             |                             |  | Ps. | 14,283,661              |   |  |     |             |  
|Actual return on plan assets                        |  |                             | 1,039,071   |   |                             |     |             |                             |  |     | 931,650                 |   |  |     |             |  
|Employee contributions                              |  |                             | 1,205,972   |   |                             |     | 472,949      |                             |  |     | 1,320,525               |   |  | Ps. | 448,128     |  
|Benefits paid                                       |  |                             | (1,704,248  | ) |                             |     | (472,949     | )                           |  |     | (1,480,884              | ) |  |     | (448,128    | )
|Actuarial loss (gain)                               |  |                             | (733,138    | ) |                             |     |             |                             |  |     | (221,591                | ) |  |     |             |  
|Effect of translation                               |  |                             | 1,689,993   |   |                             |     |             |                             |  |     | (1,000,849              | ) |  |     |             |  
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Established fund at end of year                     |  | Ps.                         | 14,283,661  |   |                             | Ps. |             |                             |  |     | Ps. 13,832,512          |   |  | Ps. |            |  
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Plan asset shortfall                                |  | Ps.                         | (8,122,735) |   |                             | Ps. | (10,564,264) |                             |  | Ps. | (10,029,098)            |   |  | Ps. | (7,354,344) |  
|Unrecognized actuarial loss, net                    |  |                             | 7,544,116   |   |                             |     | 1,731,239    |                             |  |     | 10,081,741              |   |  |     | 1,790,740   |  
|Past services and changes in plans                  |  |                             | (590,412    | ) |                             |     | (1,212,924   | )                           |  |     | (488,442                | ) |  |     | (3,653,456  | )
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  
|Total liabilities, net                              |  | Ps.                         | (1,169,031) |   |                             | Ps. | (10,045,949) |                             |  | Ps. | (435,799)               |   |  | Ps. | (9,217,060) |  
|                                                    |  |                             |             |   |                             |     |              |                             |  |     |                         |   |  |     |             |  



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##### Table of Contents

Net period cost

An analysis of the net period cost for the years ended December 31, 2010, 2011 and 2012 is as follows:



|                                               |  |                             |          |   |                         |     |         |                             |  |     |                         |   |  |                             |          |   |                         |     |          |   |  |     |          |  
|---------------------------------------------- |  | --------------------------- | -------- | - | ----------------------- | --- | ------- | --------------------------- |  | --- | ----------------------- | - |  | --------------------------- | -------- | - | ----------------------- | --- | -------- | - |  | --- | -------- | -
|                                               |  | 2010                        |          |   | 2011                    |     |         | 2012                        | 
|                                               |  | Pensions and sumof benefits |          |   | Post-retirementbenefits |     |         | Pensions and sumof benefits |  |     | Post-retirementbenefits |   |  | Pensions and sumof benefits |          |   | Post-retirementbenefits |    
|Service cost                                   |  | Ps.                         | 232,830  |   |                         | Ps. | 72,746  |                             |  | Ps. | 257,771                 |   |  | Ps.                         | 99,977   |   |                         | Ps. | 196,551  |   |  | Ps. | 84,986   |  
|Financing cost on projected benefit obligation |  |                             | 989,746  |   |                         |     | 475,600 |                             |  |     | 1,104,092               |   |  |                             | 527,196  |   |                         |     | 989,029  |   |  |     | 374,837  |  
|Actual return on plan assets                   |  |                             | (954,922 | ) |                         |     |         |                             |  |     | (1,039,071              | ) |  |                             |          |   |                         |     | (931,651 | ) |  |     |          |  
|Effect of adjustments                          |  |                             |          |   |                         |     |         |                             |  |     | 50,365                  |   |  |                             |          |   |                         |     | 27,940   |   |  |     |          |  
|Net actuarial loss                             |  |                             | 99,475   |   |                         |     | 11,504  |                             |  |     | 332,445                 |   |  |                             | 65,290   |   |                         |     | 454,516  |   |  |     | 115,698  |  
|Past services and changes in plans             |  |                             | (54,893  | ) |                         |     | (61,607 | )                           |  |     | (62,148                 | ) |  |                             | (179,591 | ) |                         |     | (57,479  | ) |  |     | (376,532 | )
|                                               |  |                             |          |   |                         |     |         |                             |  |     |                         |   |  |                             |          |   |                         |     |          |   |  |     |          |  
|                                               |  | Ps.                         | 312,236  |   |                         | Ps. | 498,243 |                             |  | Ps. | 643,454                 |   |  | Ps.                         | 512,872  |   |                         | Ps. | 678,906  |   |  | Ps. | 198,989  |  
|                                               |  |                             |          |   |                         |     |         |                             |  |     |                         |   |  |                             |          |   |                         |     |          |   |  |     |          |  

Actuarial assumptions

The average rates used in determining the net period cost for 2011 and 2012 were as follows:



|                                |  |      |      |   |      |  |      |  
|------------------------------- |  | ---- | ---- | - | ---- |  | ---- | -
|                                |  | 2011 |      |   | 2012 | 
|Discount rate                   |  |      | 5.30 | % |      |  | 4.50 | %
|Long-term rate of return        |  |      | 7.25 | % |      |  | 7.25 | %
|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:



|                                                                |  |      |      |   |      |  |      |  
|--------------------------------------------------------------- |  | ---- | ---- | - | ---- |  | ---- | -
|                                                                |  | 2011 |      |   | 2012 | 
|Percentage of increase in health care costs for the coming year |  |      | 6.50 | % |      |  | 6.50 | %
|Cost percentage due to death                                    |  |      | 4.50 | % |      |  | 4.50 | %
|Year to which this level will be maintained                     |  |      | 2021 |   |      |  | 2021 |  

The average rates and other actuarial assumptions used to determine the net period cost of post-retirement obligations
are as follows:



|                                                                   |  |      |      |   |      |  |      |  
|------------------------------------------------------------------ |  | ---- | ---- | - | ---- |  | ---- | -
|                                                                   |  | 2011 |      |   | 2012 | 
|Percentage of increase in health care costs for the
following year |  |      | 6.70 | % |      |  | 5.90 | %
|Cost percentage due to death                                       |  |      | 4.50 | % |      |  | 4.50 | %
|Year to which this level will be maintained                        |  |      | 2021 |   |      |  | 2027 |  

The projected return on plan assets is as follows:



|                          |  |      |      |   |      |  |      |  
|------------------------- |  | ---- | ---- | - | ---- |  | ---- | -
|                          |  | 2011 |      |   | 2012 | 
|Equity instruments        |  |      | 11.8 | % |      |  | 7.50 | %
|Debt instruments          |  |      | 9.60 | % |      |  | 9.20 | %
|Cash and cash equivalents |  |      | 0.1  | % |      |  | 0.1  | %



F-40



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##### Table of Contents

Plan assets

The percentages invested in plan assets are as follows:



|                          |  |                          |        |   |      |  |        |  
|------------------------- |  | ------------------------ | ------ | - | ---- |  | ------ | -
|                          |  | Post-retirement benefits |       
|                          |  | 2011                     |        |   | 2012 | 
|Equity instruments        |  |                          | 14.96  | % |      |  | 17.41  | %
|Debt instruments          |  |                          | 48.56  | % |      |  | 60.59  | %
|Cash and cash equivalents |  |                          | 36.48  | % |      |  | 22.00  | %
|                          |  |                          |        |   |      |  |        |  
|                          |  |                          | 100.00 | % |      |  | 100.00 | %
|                          |  |                          |        |   |      |  |        |  

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 recognized at December 31, 2011 and 2012 under such plans are as follows:



|                       |  |                 |           |  |      |     |           | 
|---------------------- |  | --------------- | --------- |  | ---- | --- | --------- | 
|                       |  | At December 31, |          
|                       |  | 2011            |           |  | 2011 |    
|DBP and MAP            |  | Ps.             | 1,552,335 |  |      | Ps. | 2,222,145 | 
|DCP                    |  |                 | 361,209   |  |      |     | 272,882   | 
|                       |  |                 |           |  |      |     |           | 
|Total liabilities, net |  | Ps.             | 1,913,544 |  |      | Ps. | 2,495,027 | 
|                       |  |                 |           |  |      |     |           | 

Pension plan

An analysis of obligations under the DBP and MAP at December 31, 2011 and 2012, as well as the changes in such plans during the years ended December 31, 2011 and 2012, is as follows:



|                                                  |  |                 |            |   |      |     |            |  
|------------------------------------------------- |  | --------------- | ---------- | - | ---- | --- | ---------- | -
|                                                  |  | At December 31, |           
|                                                  |  | 2011            |            |   | 2012 |    
|Projected benefit obligation at beginning of year |  | Ps.             | 14,796,418 |   |      | Ps. | 14,998,684 |  
|Service cost                                      |  |                 | 82         |   |      |     | (70        | )
|Financing cost on projected benefit obligation    |  |                 | 1,540,995  |   |      |     | 1,367,191  |  
|Actuarial loss (gain)                             |  |                 | (290,429   | ) |      |     | 3,795,899  |  
|Payments from trust fund                          |  |                 | (1,132,232 | ) |      |     | (1,135,167 | )
|Effect of translation                             |  |                 | 83,850     |   |      |     | (2,195,572 | )
|                                                  |  |                 |            |   |      |     |            |  
|Projected benefit obligation at end of year       |  | Ps.             | 14,998,684 |   |      | Ps. | 16,830,965 |  
|                                                  |  |                 |            |   |      |     |            |  
|Changes in plan assets:                           |  |                 |            |   |      |     |            |  
|Established fund at beginning of year             |  | Ps.             | 15,606,426 |   |      | Ps. | 16,827,353 |  
|Actual return on plan assets                      |  |                 | 1,714,096  |   |      |     | 1,595,890  |  
|Actuarial gain                                    |  |                 | 379,243    |   |      |     | 367,384    |  
|Employee contributions                            |  |                 | 171,378    |   |      |     | 192,067    |  
|Payments from trust fund                          |  |                 | (1,132,232 | ) |      |     | (1,135,167 | )
|Effect of translation                             |  |                 | 88,442     |   |      |     | (2,463,261 | )
|                                                  |  |                 |            |   |      |     |            |  
|Established fund at end of year                   |  | Ps.             | 16,827,353 |   |      | Ps. | 15,384,266 |  
|                                                  |  |                 |            |   |      |     |            |  
|Plan asset surplus (short-fall)                   |  | Ps.             | 1,828,669  |   |      | Ps. | (1,446,699 | )
|Unrecognized actuarial loss, net                  |  |                 | (3,381,004 | ) |      |     | (775,446   | )
|                                                  |  |                 |            |   |      |     |            |  
|Total liabilities, net                            |  | Ps.             | (1,552,335 | ) |      | Ps. | (2,222,145 | )
|                                                  |  |                 |            |   |      |     |            |  



F-41



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##### Table of Contents

Net period cost

An analysis of the net period cost for the years ended December 31, 2010, 2011 and 2012 is as follows:



|                                               |  |                 |            |   |      |     |            |      |  |     |           |  
|---------------------------------------------- |  | --------------- | ---------- | - | ---- | --- | ---------- | ---- |  | --- | --------- | -
|                                               |  | At December 31, |           
|                                               |  | 2010            |            |   | 2011 |     |            | 2012 | 
|Service cost                                   |  | Ps.             | 331        |   |      | Ps. | 82         |      |  | Ps. | (70       | )
|Financing cost on projected benefit obligation |  |                 | 1,344,463  |   |      |     | 1,540,995  |      |  |     | 1,367,191 |  
|Projected return on plan assets                |  |                 | (1,316,704 | ) |      |     | (1,714,096 | )    |  |     | (49,773   | )
|Amortization of actuarial gains                |  |                 | (97,320    | ) |      |     | (216,061   | )    |  |     | (228,229  | )
|                                               |  |                 |            |   |      |     |            |      |  |     |           |  
|                                               |  | Ps.             | (69,230    | ) |      | Ps. | (389,080   | )    |  | Ps. | 1,089,119 |  
|                                               |  |                 |            |   |      |     |            |      |  |     |           |  

Actuarial assumptions

The average rates used in determining the net period cost for 2011 and 2012 were as follows:



|                                |  |      |       |   |      |  |      |  
|------------------------------- |  | ---- | ----- | - | ---- |  | ---- | -
|                                |  | 2011 |       |   | 2012 | 
|Long-term rate of return        |  |      | 11.42 | % |      |  | 9.00 | %
|Rate of future salary increases |  |      | 4.50  | % |      |  | 5.00 | %
|Discount rate                   |  |      | 11.09 | % |      |  | 9.00 | %

Plan assets

The percentages invested in plan assets are as follows:



|                   |  |                 |        |   |      |  |        |  
|------------------ |  | --------------- | ------ | - | ---- |  | ------ | -
|                   |  | At December 31, |       
|                   |  | 2011            |        |   | 2012 | 
|Debt instruments   |  |                 | 91.26  | % |      |  | 80.51  | %
|Equity instruments |  |                 | 6.27   | % |      |  | 15.56  | %
|Other investments  |  |                 | 2.47   | % |      |  | 3.93   | %
|                   |  |                 |        |   |      |  |        |  
|                   |  |                 | 100.00 | % |      |  | 100.00 | %
|                   |  |                 |        |   |      |  |        |  

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, 2012, the balance of the DCP liability was Ps.272,882 (Ps.361,209, at December 31, 2011).

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.



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##### Table of Contents

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:

Analysis of changes in the defined benefit obligation



|                                                |  |                 |                 |   |      |  |                 |  
|----------------------------------------------- |  | --------------- | --------------- | - | ---- |  | --------------- | -
|                                                |  | At December 31, |                
|                                                |  | 2011            |                 |   | 2012 | 
|Defined benefit obligation at beginning of year |  |                 | Ps. 216,927,167 |   |      |  | Ps. 234,225,230 |  
|Service cost                                    |  |                 | 5,036,684       |   |      |  | 5,050,926       |  
|Financing cost on projected benefit obligation  |  |                 | 19,418,689      |   |      |  | 20,497,290      |  
|Actuarial loss (gain)                           |  |                 | 5,025,389       |   |      |  | (6,252,256      | )
|Payments to employees                           |  |                 | (11,472,579     | ) |      |  | (11,419,974     | )
|Payments from trust fund                        |  |                 | (710,120        | ) |      |  | (2,912,000      | )
|                                                |  |                 |                 |   |      |  |                 |  
|Defined benefit obligation at end of year       |  |                 | Ps. 234,225,230 |   |      |  | Ps. 239,189,216 |  
|                                                |  |                 |                 |   |      |  |                 |  

Analysis of changes in plan assets



|                                      |  |                 |                 |   |      |  |                 |  
|------------------------------------- |  | --------------- | --------------- | - | ---- |  | --------------- | -
|                                      |  | At December 31, |                
|                                      |  | 2011            |                 |   | 2012 | 
|Established fund at beginning of year |  |                 | Ps. 180,580,128 |   |      |  | Ps. 184,546,619 |  
|Projected return on plan assets       |  |                 | 21,665,379      |   |      |  | 22,957,166      |  
|Actuarial loss                        |  |                 | (16,988,768     | ) |      |  | (7,856,902      | )
|Payments from trust fund              |  |                 | (710,120        | ) |      |  | (2,912,000      | )
|                                      |  |                 |                 |   |      |  |                 |  
|Established fund at end of year       |  |                 | Ps. 184,546,619 |   |      |  | Ps. 196,734,883 |  
|                                      |  |                 |                 |   |      |  |                 |  

Analysis of the pension asset



|                                                         |  |      |              |  |      |    |               | 
|-------------------------------------------------------- |  | ---- | ------------ |  | ---- | -- | ------------- | 
|                                                         |  | 2011 |              |  | 2012 |   
|Plan assets shortfall for the defined benefit obligation |  | Ps.  | (49,678,611) |  |      | Ps | .(42,454,333) | 
|Unamortized actuarial loss                               |  |      | 71,964,612   |  |      |    | 69,025,695    | 
|Past services and changes in plan                        |  |      | 41,732       |  |      |    | 18,027        | 
|                                                         |  |      |              |  |      |    |               | 
|Pension asset                                            |  | Ps.  | 22,327,733   |  |      | Ps | .26,589,389   | 
|                                                         |  |      |              |  |      |    |               | 

Analysis of net period cost for the years ended December 31, 2010, 2011 and 2012 is as follows:



|                                                       |  |      |             |   |      |     |             |      |  |     |             |  
|------------------------------------------------------ |  | ---- | ----------- | - | ---- | --- | ----------- | ---- |  | --- | ----------- | -
|                                                       |  | 2010 |             |   | 2011 |     |             | 2012 | 
|Service cost                                           |  | Ps.  | 4,850,844   |   |      | Ps. | 5,036,684   |      |  | Ps  | .5,050,926  |  
|Financing cost on projected benefit obligation         |  |      | 17,751,583  |   |      |     | 19,418,689  |      |  |     | 20,497,290  |  
|Projected return on plan assets                        |  |      | (19,680,678 | ) |      |     | (21,665,379 | )    |  |     | (22,957,166 | )
|Amortization of past services and transition liability |  |      | 23,705      |   |      |     | 23,705      |      |  |     | 23,705      |  
|Amortization of variances in assumptions               |  |      | 2,418,254   |   |      |     | 2,621,515   |      |  |     | 4,543,563   |  
|                                                       |  |      |             |   |      |     |             |      |  |     |             |  
|Net period cost                                        |  | Ps.  | 5,363,708   |   |      | Ps. | 5,435,214   |      |  | Ps. | 7,158,318   |  
|                                                       |  |      |             |   |      |     |             |      |  |     |             |  



F-43



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##### Table of Contents

The rates used in the actuarial studies at both December 31, 2011 and 2012 were as follows:



|                               |  |                |     | 
|------------------------------ |  | -------------- | --- | 
|                               |  | Nominalrates % |    
|Discount of labor obligations: |  |                |     | 
|Long-term average              |  |                | 9.2 | 
|Salary increase:               |  |                |     | 
|Long-term average              |  |                | 4.5 | 



|              |  |                                                                 |      |   |      |  |      |  
|------------- |  | --------------------------------------------------------------- | ---- | - | ---- |  | ---- | -
|              |  | Post-retirement
mortality for pensioners more than 65 years old |     
|              |  | 2011                                                            |      |   | 2012 | 
|Pension plan: |  |                                                                 |      |   |      |  |      |  
|Men           |  |                                                                 | 1.94 | % |      |  | 1.94 | %
|Women         |  |                                                                 | 1.94 | % |      |  | 1.94 | %

Plan assets

The percentages invested in plan assets at December 31, 2011 and 2012 are as follows:



|                   |  |      |       |  |      |  |       | 
|------------------ |  | ---- | ----- |  | ---- |  | ----- | 
|                   |  | 2011 |       |  | 2012 | 
|Debt instruments   |  |      | 49.6  |  |      |  | 48.5  | 
|Equity instruments |  |      | 50.4  |  |      |  | 51.5  | 
|                   |  |      |       |  |      |  |       | 
|                   |  |      | 100.0 |  |      |  | 100.0 | 
|                   |  |      |       |  |      |  |       | 

As of December 31, 2012, the fair value of Telmexs debt securities held by the plan assets was
Ps. 886,907 (Ps. 989,063 at December 31, 2011). Also, the plan assets of Telmex include 30.4% and 28.2% of securities of the Company and other related parties at December 31, 2012 and 2011, respectively. The purchases and
sales of these securities made by the plan were at market value.



F-44



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##### Table of Contents

e) In the case of Mexico (Telcel) and Ecuador, the net period cost of other benefits for the years ended
December 31, 2010, 2011 and 2012 was Ps.46,447, Ps.57,965 and Ps.86,870, respectively, for Mexico, and Ps.8,706, Ps.12,095 and Ps.2,602, 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 December 31, |            
|                                      |  | 2011            |             |  | 2012 |    
|Suppliers                             |  | Ps.             | 92,484,803  |  |      | Ps. | 91,793,858  | 
|Sundry creditors                      |  |                 | 37,982,974  |  |      |     | 38,463,598  | 
|Interest payable                      |  |                 | 6,242,819   |  |      |     | 6,001,435   | 
|Accrued expenses and other provisions |  |                 | 37,156,996  |  |      |     | 41,182,768  | 
|Guarantee deposits                    |  |                 | 1,753,530   |  |      |     | 2,031,944   | 
|Dividends payable                     |  |                 | 3,119,333   |  |      |     | 4,582,477   | 
|                                      |  |                 |             |  |      |     |             | 
|Total                                 |  | Ps.             | 178,740,455 |  |      | Ps. | 184,056,080 | 
|                                      |  |                 |             |  |      |     |             | 

b) An analysis of accrued expenses and other provisions at December 31, 2011 and 2012 is as follows:



|                                 |  |                            |            |          |                      |     |            |                     |  |     |              |  |  |                            |             |   |  |     |          |   |  |     |            | 
|-------------------------------- |  | -------------------------- | ---------- | -------- | -------------------- | --- | ---------- | ------------------- |  | --- | ------------ |  |  | -------------------------- | ----------- | - |  | --- | -------- | - |  | --- | ---------- | 
|                                 |  | Balance
atDecember 31,2010 |            |          | Effect oftranslation |     |            | Increase ofthe
year |  |     | Applications |  |  | Balance
atDecember 31,2011 |            
|                                 |  |                            |            | Payments |                      |     | Reversals  |                     | 
|Direct employee benefits payable |  | Ps.                        | 8,752,153  |          |                      | Ps. | 75,425     |                     |  | Ps. | 10,195,237   |  |  | Ps.                        | (10,764,332 | ) |  | Ps. | (64,395  | ) |  | Ps. | 8,194,088  | 
|Asset retirement obligations     |  |                            | 4,681,409  |          |                      |     | 79,891     |                     |  |     | 1,661,841    |  |  |                            | ( 29,960    | ) |  |     | (5,952   | ) |  |     | 6,387,229  | 
|Contingencies                    |  |                            | 18,100,789 |          |                      |     | 266,616    |                     |  |     | 5,034,512    |  |  |                            | ( 819,307   | ) |  |     | (6,931   | ) |  |     | 22,575,679 | 
|                                 |  |                            |            |          |                      |     |            |                     |  |     |              |  |  |                            |             |   |  |     |          |   |  |     |            | 
|                                 |  | Ps.                        | 31,534,351 |          |                      | Ps. | 421,932    |                     |  | Ps. | 16,891,590   |  |  | Ps.                        | (11,613,599 | ) |  | Ps. | (77,278  | ) |  | Ps. | 37,156,996 | 
|                                 |  |                            |            |          |                      |     |            |                     |  |     |              |  |  |                            |             |   |  |     |          |   |  |     |            | 
|                                 |  |                            |            |          |                     
|                                 |  | Balance
atDecember 31,2011 |            |          | Effect oftranslation |     |            | Increase ofthe
year |  |     | Applications |  |  | Balance
atDecember 31,2012 |            
|                                 |  |                            |            | Payments |                      |     | Reversals  |                     | 
|Direct employee benefits payable |  | Ps.                        | 8,194,088  |          |                      | Ps. | (281,748   | )                   |  | Ps. | 8,771,195    |  |  | Ps.                        | (6,811,990  | ) |  | Ps. | (67,231  | ) |  | Ps. | 9,804,314  | 
|Asset retirement obligations     |  |                            | 6,387,229  |          |                      |     | (537,848   | )                   |  |     | 1,428,729    |  |  |                            | (92,921     | ) |  |     | (7,974   | ) |  |     | 7,177,215  | 
|Contingencies                    |  |                            | 22,575,679 |          |                      |     | (2,512,084 | )                   |  |     | 5,227,068    |  |  |                            | (1,029,693  | ) |  |     | (59,731  | ) |  |     | 24,201,239 | 
|                                 |  |                            |            |          |                      |     |            |                     |  |     |              |  |  |                            |             |   |  |     |          |   |  |     |            | 
|                                 |  | Ps.                        | 37,156,996 |          |                      | Ps. | (3,331,680 | )                   |  | Ps. | 15,426,992   |  |  | Ps.                        | (7,934,604  | ) |  | Ps. | (134,936 | ) |  | Ps. | 41,182,768 | 
|                                 |  |                            |            |          |                      |     |            |                     |  |     |              |  |  |                            |             |   |  |     |          |   |  |     |            | 

14. Other Financial Assets and Liabilities

Fair value hierarchy

At December 31, 2011 and 2012, América Móvil had the
following financial instruments measured at fair value shown in the statement of financial position.



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##### Table of Contents

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, 2011 |            
|                    |  | Level 1                                        |             |  | Level 2 |     |              | Level 3 |  |  | Total | 
|Assets:             |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Derivatives         |  |                                                |            |  |         | Ps. | 9,793,836    |         |  |  |      |  |  | Ps. | 9,793,836   | 
|Pension plan assets |  | Ps.                                            | 215,657,633 |  |         |     |             |         |  |  |      |  |  |     | 215,657,633 | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Total               |  | Ps.                                            | 215,657,633 |  |         | Ps. | 9,793,836    |         |  |  |      |  |  | Ps. | 225,451,469 | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Liabilities:        |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Debt                |  | Ps.                                            | 390,859,513 |  |         | Ps. | 22,879,282   |         |  |  |      |  |  | Ps. | 413,738,795 | 
|Derivatives         |  |                                                |            |  |         |     | 2,889,281    |         |  |  |      |  |  |     | 2,889,281   | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Total               |  | Ps.                                            | 390,859,513 |  |         | Ps. | 25,768,563   |         |  |  |      |  |  | Ps. | 416,628,076 | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|                    | 
|                    |  | Measurement of fair value at December 31, 2012 |            
|                    |  | Level 1                                        |             |  | Level 2 |     |              | Level 3 |  |  | Total | 
|Assets:             |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Derivatives         |  |                                                |            |  |         | Ps. | 2,779,749    |         |  |  |      |  |  | Ps. | 2,779,749   | 
|Pension plan assets |  | Ps.                                            | 225,951,661 |  |         |     |             |         |  |  |      |  |  |     | 225,951,661 | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Total               |  | Ps.                                            | 225,951,661 |  |         | Ps. | 2,779,749    |         |  |  |      |  |  | Ps. | 228,731,410 | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Liabilities:        |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Debt                |  | Ps.                                            | 326,614,401 |  |         | Ps. | 143,258,386  |         |  |  |      |  |  | Ps. | 469,872,787 | 
|Derivatives         |  |                                                |            |  |         |     | 5,025,047    |         |  |  |      |  |  |     | 5,025,047   | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 
|Total               |  | Ps.                                            | 326,614,401 |  |         | Ps  | .148,283,433 |         |  |  |      |  |  | Ps. | 474,897,834 | 
|                    |  |                                                |             |  |         |     |              |         |  |  |       |  |  |     |             | 

For the years ended December 31, 2011 and 2012, no transfers were made between Level 1 and Level 2 fair value
measurement techniques.



F-46



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##### Table of Contents

15. Deferred Revenues

An analysis of deferred revenues at December 31, 2010, 2011 and 2012 is as follows:



|                         |  |                 |              |   |      |     |              |      |  |     |              |  
|------------------------ |  | --------------- | ------------ | - | ---- | --- | ------------ | ---- |  | --- | ------------ | -
|                         |  | At December 31, |             
|                         |  | 2010            |              |   | 2011 |     |              | 2012 | 
|At January 1             |  | Ps.             | 28,937,442   |   |      | Ps. | 29,054,414   |      |  | Ps. | 29,424,475   |  
|Increase during the year |  |                 | 242,834,356  |   |      |     | 305,334,487  |      |  |     | 192,873,749  |  
|Recognized as revenues   |  |                 | (242,258,878 | ) |      |     | (306,309,173 | )    |  |     | (192,437,676 | )
|NET consolidation        |  |                 |              |   |      |     |              |      |  |     | (3,099,829   | )
|Effect of translation    |  |                 | (458,506     | ) |      |     | 1,344,747    |      |  |     | (1,703,585   | )
|                         |  |                 |              |   |      |     |              |      |  |     |              |  
|                         |  |                 | 29,054,414   |   |      | Ps. | 29,424,475   |      |  | Ps. | 25,057,134   |  
|                         |  |                 |              |   |      |     |              |      |  |     |              |  
|Short-term               |  | Ps.             | 25,064,230   |   |      | Ps. | 26,248,679   |      |  |     | 23,956,939   |  
|Long-term                |  |                 | 3,990,184    |   |      |     | 3,175,796    |      |  |     | 1,100,195    |  
|                         |  |                 |              |   |      |     |              |      |  |     |              |  
|                         |  | Ps.             | 29,054,414   |   |      | Ps. | 29,424,475   |      |  | Ps. | 25,057,134   |  
|                         |  |                 |              |   |      |     |              |      |  |     |              |  

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 comprehensive income when they are earned.

16. Debt

The Companys short- and long-term debt consists of the following:



|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|--------------- |  | --------------------------- |  | ------------------------------------ |  | -------------------- | ---- |  | ----- |  | ---------------- | 
|                |  |                             |  | At December 31, 2012                 | 
|Currency        |  | Loan                        |  | Rate                                 |  | Maturity from2012 to |      |  | Total | 
|U.S. dollars    |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | ECA credits (fixed rate)    |  | 2.52%                                |  |                      | 2017 |  |       |  | Ps.    1,244,992 | 
|                |  | ECA credits (floating rate) |  | L + 0.35%, L + 0.50% and L + 0.75%   |  |                      | 2018 |  |       |  | 4,967,924        | 
|                |  | Fixed-rate notes            |  | 2.375% - 8.57%                       |  |                      | 2042 |  |       |  | 196,424,526      | 
|                |  | Lines of credit             |  | 6.5% and 9.26%                       |  |                      | 2019 |  |       |  | 1,555,488        | 
|                |  | Leases                      |  | 3.75%                                |  |                      | 2015 |  |       |  | 333,972          | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Subtotal U.S. dollars       |  |                                      |  |                      |      |  |       |  | 204,526,902      | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|Euros           |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Fixed rate notes            |  | 3.0%, 3.75%, 4.125% and 4.75%        |  |                      | 2022 |  |       |  | 64,365,844       | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Subtotal Euros              |  |                                      |  |                      |      |  |       |  | 64,365,844       | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|Mexican pesos   |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Fixed-rate notes            |  | 4.10% - 9.00%                        |  |                      | 2037 |  |       |  | 56,613,388       | 
|                |  | Floating rate notes         |  | Cetes + 0.55% & TIIE + 0.40% - 1.50% |  |                      | 2016 |  |       |  | 22,600,000       | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Subtotal Mexican pesos      |  |                                      |  |                      |      |  |       |  | 79,213,388       | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|Reais           |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Fixed-rate notes            |  | 4.50%                                |  |                      | 2018 |  |       |  | 1,920,311        | 
|                |  | Floating rate notes         |  | IPCA + 0.50%%                        |  |                      | 2021 |  |       |  | 343,795          | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Subtotal Brazilian reais    |  |                                      |  |                      |      |  |       |  | 2,264,106        | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|Colombian pesos |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Bonds                       |  | IPC + 6.80% & 7.59%                  |  |                      | 2016 |  |       |  | 4,561,772        | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 
|                |  | Subtotal Colombian pesos    |  |                                      |  |                      |      |  |       |  | 4,561,772        | 
|                |  |                             |  |                                      |  |                      |      |  |       |  |                  | 



F-47



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##### Table of Contents

|                 |  |                                                              |  |                      |  |                      |      |  |       |  |                | 
|---------------- |  | ------------------------------------------------------------ |  | -------------------- |  | -------------------- | ---- |  | ----- |  | -------------- | 
|                 |  |                                                              |  | At December 31, 2012 | 
|Currency         |  | Loan                                                         |  | Rate                 |  | Maturity from2012 to |      |  | Total | 
|Other currencies |  |                                                              |  |                      |  |                      |      |  |       |  |                | 
|                 |  | Bonds                                                        |  | 1.125% - 5.75%       |  |                      | 2041 |  |       |  | 62,250,027     | 
|                 |  | Leases                                                       |  | 4.35% - 8.97%        |  |                      | 2027 |  |       |  | 246,188        | 
|                 |  | Lines of credit                                              |  | 19.00% and 19.45%    |  |                      | 2014 |  |       |  | 241,861        | 
|                 |  |                                                              |  |                      |  |                      |      |  |       |  |                | 
|                 |  | Subtotal other currencies                                    |  |                      |  |                      |      |  |       |  | 62,738,076     | 
|                 |  |                                                              |  |                      |  |                      |      |  |       |  |                | 
|                 |  | Total debt                                                   |  |                      |  |                      |      |  |       |  | 417,670,088    | 
|                 |  |                                                              |  |                      |  |                      |      |  |       |  |                | 
|                 |  | Less: Short-term debt and current portion of long -term debt |  |                      |  |                      |      |  |       |  | 13,621,806     | 
|                 |  |                                                              |  |                      |  |                      |      |  |       |  |                | 
|                 |  | Long-term debt                                               |  |                      |  |                      |      |  |       |  | Ps.404,048,282 | 
|                 |  |                                                              |  |                      |  |                      |      |  |       |  |                | 



|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|---------------- |  | ------------------------------------------------------------ |  | ---------------------------------------------------------------- |  | -------------------- | ---- |  | ----- |  | -------------- | 
|                 |  |                                                              |  | At December 31, 2011                                             | 
|Currency         |  | Loan                                                         |  | Rate                                                             |  | Maturity from2012 to |      |  | Total | 
|U.S. dollars     |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | ECA credits (fixed rate)                                     |  | 2.52%                                                            |  |                      | 2017 |  |       |  | Ps.1,636,312   | 
|                 |  | ECA credits (floating rate)                                  |  | L + 0.30%, L + 0.35%, L + 0.50% and L + 0.75%                    |  |                      | 2018 |  |       |  | 6,780,181      | 
|                 |  | Fixed-rate notes                                             |  | 2.375% - 6.375%                                                  |  |                      | 2040 |  |       |  | 167,854,707    | 
|                 |  | Lines of credit                                              |  | L + 0.25% L + 0.325% L + 0.35%                                   |  |                      | 2014 |  |       |  | 14,015,863     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Subtotal U.S. dollars                                        |  |                                                                  |  |                      |      |  |       |  | 190,287,063    | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|Euros            |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | ECA credits (fixed rate)                                     |  | 2.00%                                                            |  |                      | 2022 |  |       |  | 177,004        | 
|                 |  | Fixed-rate notes                                             |  | 3.75%, 4.125% and 4.75%                                          |  |                      | 2022 |  |       |  | 49,865,633     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Subtotal Euros                                               |  |                                                                  |  |                      |      |  |       |  | 50,042,637     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|Mexican pesos    |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Lines of credit                                              |  | TIIE + 0.60%                                                     |  |                      | 2012 |  |       |  | 55,000         | 
|                 |  | Fixed-rate notes                                             |  | 4.10% - 10.20%                                                   |  |                      | 2037 |  |       |  | 41,680,565     | 
|                 |  | Floating-rate notes                                          |  | Cetes + 0.55% & TIIE + -0.10% - 1.50%                            |  |                      | 2016 |  |       |  | 32,600,000     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Subtotal Mexican pesos                                       |  |                                                                  |  |                      |      |  |       |  | 74,335,565     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|Reais            |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Lines of credit                                              |  | 4.50%, 8.78% y 9.20%, IPCA + 0.50% & TJLP + 4.5%                 |  |                      | 2021 |  |       |  | 2,707,482      | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Subtotal Brazilian reais                                     |  |                                                                  |  |                      |      |  |       |  | 2,707,482      | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|Colombian pesos  |  | Bonds                                                        |  | IPC + 6.8% & 7.59%                                               |  |                      | 2016 |  |       |  | 4,464,945      | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Subtotal Colombian pesos                                     |  |                                                                  |  |                      |      |  |       |  | 4,464,945      | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|Other currencies |  | Bonds                                                        |  | 1.23% - 6.41%                                                    |  |                      | 2039 |  |       |  | 43,066,551     | 
|                 |  | Leases                                                       |  | 2.75% - 8.97%                                                    |  |                      | 2027 |  |       |  | 527,535        | 
|                 |  | Lines of credit                                              |  | L + 0.33%, TAB + 0.40% and 0.425%, Badlar Rate & 10.00% - 19.45% |  |                      | 2014 |  |       |  | 15,187,024     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Subtotal other currencies                                    |  |                                                                  |  |                      |      |  |       |  | 58,781,110     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Total debt                                                   |  |                                                                  |  |                      |      |  |       |  | 380,618,802    | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Less: Short-term debt and current portion of long -term debt |  |                                                                  |  |                      |      |  |       |  | 26,643,315     | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 
|                 |  | Long-term debt                                               |  |                                                                  |  |                      |      |  |       |  | Ps.353,975,487 | 
|                 |  |                                                              |  |                                                                  |  |                      |      |  |       |  |                | 



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Legend:

Badlar Rate = Interest rate paid in Argentina on fixed-term deposits of more than one million Argentinean pesos

Cetes = Mexican Treasury Certificates

ECA = Export Credit Agreement

IPCA = Brazils consumer price index.

IPC
= Consumer Price Index

L = LIBOR or London Interbank Offered Rate

TAB = Bankers and Financial Institutions Association Rate

TIIE = Mexican Weighted Interbank
Interest Rate

TJLP = Long-term Interest Rate

Except for the fixed-rate senior notes, interest rates on the Companys debt are subject to variances in international and local rates. The Companys weighted-average cost of borrowed funds at
December 31, 2012 and 2011 was approximately 5.0%.

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 December 31, 2011 and 2012 is as follows:



|                               |  |      |            |   |      |     |            |  
|------------------------------ |  | ---- | ---------- | - | ---- | --- | ---------- | -
|                               |  | 2011 |            |   | 2012 |    
|Senior notes                   |  | Ps.  | 648,424    |   |      | Ps. | 1,250,808  |  
|Domestic senior notes          |  |      | 10,300,000 |   |      |     | 9,517,467  |  
|Lines of credit used           |  |      | 9,568,760  |   |      |     | 331,820    |  
|Other                          |  |      | 200,710    |   |      |     | 151,807    |  
|                               |  |      |            |   |      |     |            |  
|Total                          |  | Ps.  | 20,717,894 |   |      | Ps. | 11,251,902 |  
|                               |  |      |            |   |      |     |            |  
|Weighted-average interest rate |  |      | 5.1        | % |      |     | 6.5        | %
|                               |  |      |            |   |      |     |            |  

An analysis of maturities of the Companys long-term debt is as follows:



|                    |  |        |             | 
|------------------- |  | ------ | ----------- | 
|Year                |  | Amount |            
|2014                |  | Ps.    | 25,028,845  | 
|2015                |  |        | 38,145,822  | 
|2016                |  |        | 42,849,482  | 
|2017                |  |        | 31,730,642  | 
|2018                |  |        | 8,399,445   | 
|2019 and thereafter |  |        | 257,894,046 | 
|                    |  |        |             | 
|Total               |  | Ps.    | 404,048,282 | 
|                    |  |        |             | 

Senior NotesAt December 31, 2012 and 2011, the Company has senior notes issued in U.S. dollars of
US$ 15,098 million and US$ 11,998 million, respectively (Ps.196,425 million and Ps.167,855 million, respectively) maturing from 2014 to 2042. As of December 31, 2012 and 2011 the Company also had senior notes issued in Mexican
pesos of Ps.79,213 million and Ps.74,281, respectively, maturing in 2013 and 2037.

In 2012, América Móvil issued seven new
senior notes as follows: US$ 1,600 million and US$ 1,150 million; 250 million Swiss francs,  1,000 million Euros, Ps.15,000 million, 1,000 million Chinesse yuan and £750 million pounds sterling.

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 equipment for export from their respective countries. The outstanding balance under these plans at December 31, 2012 and 2011 is approximately
Ps.6,213 million and Ps.8,593 million, respectively.



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Domestic notes

At December 31, 2012 and 2011, debt under domestic notes aggregates to Ps.46,842 million and Ps.56,909 millions, respectively. In general, these issuances bear a fixed or floating interest rate
established as a percentage of the Mexican weighted interbank interest rate (TIIE), Cetes and IDC.

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.

Early payment of debt

In 2012 and 2011,
the Company made payments and advance payments against its debt with third parties of approximately Ps.23 billion and Ps.23 billion, respectively.

Contractual Restrictions

The Company and certain subsidiaries, including Telcel and
Telmex, are subject to restrictive covenants under bank debt and bond debt. These covenants restrict pledges of assets, restrict mergers of a particular obligor or the sale of all or substantially all its assets, and restrict AMX from selling
control over Telcel. They also require the maintenance of specified financial ratios. The more restrictive financial covenants require the Company to maintain a consolidated ratio of debt to EBITDA (earnings before interest, tax, depreciation and
amortization) that does not exceed 4 to 1, and a consolidated ratio of EBITDA to interest paid that is not below 2.5 to 1 (as defined in the agreements). Under certain instruments Telcel is subject to similar ratios and covenants. Also, Telmex
Internacional is subject to financial covenants requiring it to maintain a ratio of debt to EBITDA that does not exceed 3.5 to 1, and a consolidated ratio of EBITDA to interest paid of not less than 3 to 1 (as defined in the agreements).

As of December 31, 2012 and 2011, the Company is in compliance with these restrictions.

Such covenants do not restrict the ability of AMXs subsidiaries to pay dividends or other payment distributions to AMX.

Part of the debt is also subject to acceleration, early extinguishment or repurchase at the option of the holders in the event of a change of control, as defined in the respective instruments.

At December 31, 2012, approximately 58% of América Móvils total outstanding consolidated debt was guaranteed by Telcel.

17. Commitments and Contingencies

a) Leases

At December 31, 2010 and 2011, the Company has entered into several lease
agreements with related parties and third parties for the buildings where its 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.



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At December 31, 2012, the Company has the following non-cancelable commitments under finance and
operating leases:



|                                            |  |               |         |  |                 |     |            | 
|------------------------------------------- |  | ------------- | ------- |  | --------------- | --- | ---------- | 
|Year ended December 31                      |  | Financeleases |         |  | Operatingleases |    
|2013                                        |  | Ps.           | 221,580 |  |                 | Ps. | 15,954,720 | 
|2014                                        |  |               | 154,516 |  |                 |     | 8,322,118  | 
|2015                                        |  |               | 127,019 |  |                 |     | 8,888,300  | 
|2016                                        |  |               | 32,557  |  |                 |     | 7,327,541  | 
|2017                                        |  |               | 32,557  |  |                 |     | 7,001,248  | 
|2018 and thereafter                         |  |               | 95,680  |  |                 |     | 28,617,979 | 
|                                            |  |               |         |  |                 |     |            | 
|Total                                       |  |               | 663,909 |  |                 | Ps. | 76,111,906 | 
|                                            |  |               |         |  |                 |     |            | 
|Less: interest                              |  |               | 83,749  |  |                 |     |            | 
|                                            |  |               |         |  |                 |     |            | 
|Present value of net minimum lease payments |  |               | 580,160 |  |                 |     |            | 
|Less current portion                        |  |               | 205,873 |  |                 |     |            | 
|                                            |  |               |         |  |                 |     |            | 
|Long-term obligations                       |  | Ps.           | 374,287 |  |                 |     |            | 
|                                            |  |               |         |  |                 |     |            | 

Rent expense for the years ended December 31, 2010, 2011 and 2012 was Ps.8,318,926, Ps.11,658,034 and Ps.14,800,464,
respectively.

b) Commitments

At December 31, 2012, there were commitments in certain subsidiaries for the acquisition of equipment for incorporation into their GSM, 3G and 4G
networks for an amount up to approximately US$ 2,341 million (approximately Ps. 30,461 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

Telcel

COFECOMonopolistic practices investigations

Telcel is the target of three Federal Antitrust Commission (Comisión Federal de Competencia, or COFECO) investigations into
alleged monopolistic practices. The first two concern alleged actions by Telcel and certain of its distributors in relation to the purchase and sale of cellular phones from and to third parties. COFECO determined that Telcel engaged in
anti-competitive behavior, and the agency imposed fines totaling Ps. 6.7 million and ordered that Telcel cease the alleged monopolistic practices immediately. Telcel has challenged COFECOs findings and fines in the courts. No final ruling
has been issued in connection with the first investigation. In the second investigation, a judicial decision ordered COFECO to issue a new resolution considering expert opinions not originally taken into account. COFECO issued a resolution revoking
the fine and withdrawing the investigation. The Company has not established a provision in the accompanying financial statements for loss arising from these contingencies.

The third investigation concerns alleged monopolistic practices in the mobile termination (interconnection) market. In April 2011, COFECO imposed a fine of Ps. 11,989 million against Telcel for
alleged monopolistic practices that according to COFECO also constituted a repeat offense. COFECO alleges that some of the rates Telcel offers its own callers 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, which disputes the conclusion that its pricing practices were monopolistic and the determination that there was a repeat offense, submitted a petition for
reconsideration (recurso de reconsideración) to COFECO seeking review of COFECOs



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ruling. In May 2012, Telcel was notified of a resolution issued by COFECO that revoked the fine. As a condition to the revocation of the fine, Telcel agreed to comply with certain undertakings
that it proposed to COFECO in March 2012. Certain operators challenged COFECOs ruling revoking Telcels fine. As of this date of these financial statements, none of the challenges has been successful in courts.

As part of the undertakings agreed upon with COFECO, Telcel issued terms of reference governing interconnection with its network, including mobile
termination rates for the period from 2011 to 2014. Such terms are available for all operators terminating calls in Telcels network.

COFECO will oversee compliance by Telcel with the agreed undertakings and, upon any breach by Telcel, COFECO may impose a fine of up to 8% of
Telcels annual revenues. As of this date, Telcel is in full compliance with the agreed undertakings.

Mobile termination rates

Mobile termination rates for the years 2005 through 2010 between Telcel and affiliated operators Axtel and Avantel were the subject of
a number of legal proceedings. The Supreme Court of Justice (Suprema Corte de Justicia de la Nación) addressed these disputes in a series of rulings during 2012 and early 2013, which generally (i) determined that the Mexican Ministry of
Communications and Transportation (Secretaría de Comunicaciones y Transportes) does not have authority to resolve disputes over mobile termination rates, (ii) confirmed that the Federal Telecommunications Commission (Comisión
Federal de Telecomunicaciones, or COFETEL) has authority to determine mobile termination rates based on its own cost models, (iii) for certain periods (2005-2007), confirmed the rates established by COFETEL, and (iv) for other
periods (2008-2010), required COFETEL to reissue resolutions determining mobile termination rates between the parties. As of the date of these financial statements, COFETELs resolutions are still pending.

Several mobile operators began proceedings with COFETEL (desacuerdos de interconexión) to establish applicable mobile termination rates and
other interconnection conditions for the years 2011 to 2013. COFETEL has determined rates for 2011, but as of the date of these financial statements has not determined rates for 2012 and 2013.

Reduction in mobile termination rates and any potential disparity between the mobile termination rates made available by Telcel to other operators and
the rates to be established by COFETEL for the years 2012 to 2013 may give rise to contractual claims among Telcel and other operators for reimbursement or payment, as the case may be, of amounts paid or owed between Telcel and such operators. 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 they could materially reduce Telcels mobile termination revenues.

AMX
has established provisions in the accompanying financial statements for the losses AMX considers probable and estimable for approximately Ps. 2,500 million, but the Company cannot estimate the amount of possible loss.

Short Message Services (SMS)Royalties

The Mexican Tax Administration Service (SAT), notified Telcel of tax assessments totaling Ps. 320 million alleging nonpayment of royalties for revenues generated by short message services
during 2004 and 2005. SAT is alleging that Telcel owes such amounts because short message services constitute concessioned services. AMX has challenged the assessments on the grounds that short message services are value-added services that are not
concessioned services. 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



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concessioned services. Telcel is also currently disputing these rulings in an administrative proceeding. AMX has established a provision in the accompanying financial statements for the loss
arising from these contingencies that the Company considers probable.

Trademarks Tax Assessments

In 2006 and 2007, the SAT notified Telcel and the Company of assessments related to the deduction in 2003 of certain trademark payments, which the SAT
asserted should have been taken over the course of several years and not in a single year. AMX challenged each of the two assessments in federal tax courts. These claims were settled in April 2013.

In December 2007, the SAT notified Telcel of an assessment of Ps. 453.6 million (Ps. 243.6 million plus adjustments, fines and late fees), in
connection with a deduction of certain advertising expenses in 2004. The SAT took the position that the payments of advertising expenses were not deductible because Telcel also paid royalties relating to the same trademarks. In July 2011, the SAT
notified the Company of an assessment of Ps. 773.0 million (Ps. 292 million plus adjustments, fines and late fees), related to the same payments described in the December 2007 assessment above. Under the consolidation regime applicable in
Mexico at the time, Telcel was permitted to take up to 40% of the deduction, while the parent company was permitted to take the remaining 60%. This July 2011 assessment relates to the Companys portion of the deduction. AMX challenged each of
the two assessments relating to 2004 in federal tax courts, and such challenges are still pending.

Based on the above, the Company and Telcel
expect the SAT to challenge deductions taken in other years related to the payment of royalties associated with the trademarks.

The Company
has not established a provision in the accompanying financial statements for loss arising from these contingencies.

Class Actions

The Federal Consumer Bureau (Procuraduría Federal del Consumidor, or Profeco) filed a class action in
Mexican courts on behalf of customers who filed complaints before it alleging deficiencies in the quality of Telcels network in 2010 and breach of customer agreements. If the action is resolved in favor of Profeco, Telcels customers
would be entitled to compensation for damages.

Beginning in 2012, Mexican Law provides for class actions seeking compensation. These class
actions may arise from antitrust, consumer, data and privacy protection issues, as well as administrative, criminal and environmental violations, and may be filed by the competent authorities or the affected groups.

Four class actions have been initiated against Telcel. Two of them relate to quality of service and were filed by consumers. A third was also filed by
consumers and relates to quality of service, but in addition compares wireless voice, data and broadband international rates claiming that rates offered by Telcel are higher than international comparable rates. The last one was filed by Profeco and
relates to a network technical malfunction that occurred in January 2013.

The Company currently does not have enough information to determine
whether these class actions could have an adverse effect on our business and results of operations if they are resolved against us. Consequently, Telcel has not established a provision in the accompanying financial statements for loss arising from
these contingencies.

Carso Global Telecom

In November 2010, the SAT notified Carso Global Telecom, S.A. de C.V. (CGT), of an assessment of Ps. 3,392 million related to the change in the scope of fiscal consolidation in 2005.
The SAT alleges that this



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change generated a reduction in the participation of CGT in its subsidiaries, resulting in increased income taxes. CGT has challenged this assessment in federal tax courts, and this challenge is
still pending. AMX has not established a provision in the accompanying financial statements for loss arising from this contingency.

Sercotel

In August 2011, the SAT
notified Sercotel, S.A. de C.V. (Sercotel), of an assessment of Ps. 6,308 million related to withholding taxes, interest payments and certain income that the SAT contends should have been reported at Sercotel in 2005. Sercotel paid
Ps. 118 million related to withholding taxes and interest payments and challenged the portion of the assessment related to the income reporting in an administrative appeal with the tax authority. The challenge is still pending.

In March 2012, the SAT notified Sercotel and the Company of a fine of approximately Ps. 1,400 million because of the SATs objection to the
allegedly improper tax implications of the transfer of certain accounts receivable from one of the Companys subsidiaries to Sercotel. AMX challenged the fine by filing an administrative appeal with the tax authority which is still pending. The
Company also expects the SAT will issue tax assessments of Ps. 2,750 million relating to the same matter.

In December 2012, the SAT
notified Sercotel of an assessment of Ps. 4,824 million related to income that the SAT contends should have been reported at Sercotel in 2006. Sercotel challenged the assessment related to the taxability in an administrative appeal with the tax
authority. The challenge is still pending.

The Company has not established a provision in the accompanying financial statements for loss
arising from these contingencies.

Telmex

COFECOMonopolistic practices investigations

Telmex and Teléfonos del
Noroeste, S.A. de C.V. (Telnor) are the target of two COFECO investigations into alleged monopolistic practices. In the first investigation, COFECO determined that Telmex and Telnor engaged in monopolistic practices in the fixed-network
interconnection services market. Telmex and Telnor filed relief (amparo) proceedings against this ruling and their cases are pending resolution. In the second investigation, in February 2013 COFECO determined that Telmex and Telnor engaged in
monopolistic practices in the wholesale market for dedicated-link leasing (local and domestic long-distance) imposing a fine of Ps. 657.4 million. Telmex and Telnor challenged said resolution and their cases are pending.

AMX cannot predict when or how these investigations will be resolved. The competitive and financial effects of any final findings by COFECO could be
complex and difficult to predict. They may include monetary fines or additional regulations or restrictions that may limit our flexibility and our ability to adopt competitive market policies, any of which could materially reduce Telmex and
Telnors revenues in future periods.

AMX has not established a provision in the accompanying financial statements for loss arising from
these contingencies.

Claro Brasil and Americel

Anatel Inflation-Related Adjustments

The Brazilian National Telecommunications
Agency (Agência Nacional de Telecomunicações or Anatel), challenged the calculation of inflation-related adjustments due under the agreements it had with Tess, S.A. (Tess), and ATL-Telecom Leste,
S.A. (ATL), two of our Brazilian subsidiaries that were merged with and into Claro Brasil, S.A. (Claro Brasil), which assumed their rights and obligations.



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Under the agreements with Anatel, 40% of the concession price was due upon execution and 60% was due in
three equal annual installments (subject to inflation-related adjustments and interest), beginning in 1999. The companies made all payments, but Anatel challenged the companies calculation of the inflation-related adjustments related to the
payment corresponding to 60% of the concession price, alleging that such calculation resulted in a shortfall, and requesting payment The amount of this shortfall and the method used to calculate monetary correction are subject to judicial disputes.

The companies filed declaratory and consignment actions seeking resolution of the disputes. The court of first instance ruled against
ATLs declaratory suit in October 2001 and ATLs consignment action in September 2002. Subsequently, ATL filed appeals, which are still pending. Similarly, the court of first instance ruled against Tess consignment action in June
2003 and against Tess filing for declaratory action in February 2009. Tess also filed an appeal, which is still pending.

In December
2008, Anatel charged Tess approximately Ps. 1,713 million (approximately R$269 million). Tess obtained an injunction from the Federal Court of Appeals suspending payment until the pending appeal is resolved. Similarly, in March 2009, Anatel
charged ATL approximately Ps. 1,216 million (approximately R$191 million). ATL also obtained an injunction from the Federal Court of Appeals suspending payment until the pending appeal is resolved.

The Company calculated the amount of the shortfall based on a specific method and certain assumptions. If other methods or assumptions are used, the
amount of damages may increase. In December 2012, Anatel calculated monetary correction in a total amount of Ps. 8,913 million (approximately R$1,400 million).

The Company has established a provision of Ps. 3,572 million (approximately R$561 million), in the accompanying financial statements for loss arising from these contingencies, which AMX considers
probable.

BNDESPar

In November 2004, BNDESPar filed a lawsuit with the competent court in Rio de Janeiro asserting certain claims from its investment in certain of our
subsidiaries in Brazil for approximately Ps. 1,738 million (approximately R$273 million). In December 2012, as part of the arrangements for the acquisition by Claro Brasil of BNDESPAR shares in Claro Brasil and one of its subsidiaries, the
parties entered into a settlement agreement over their dispute and the case was then dismissed.

Consumer Protection Lawsuit (DPDC)

In July 2009, the Brazilian Federal and State Prosecutor Office, along with the Consumer Protection and Defense Agency and other
Brazilian consumer protection agencies, initiated a lawsuit against Claro Brasil alleging that it has violated certain regulations governing the provision of telecommunications services. The amount claimed by the plaintiffs is Ps. 1,910 million
(approximately R$300 million). Claro Brasil is contesting the lawsuit and a final ruling is still pending.

The Company has not established a
provision in the accompanying financial statements to cover loss arising from this contingency, which the Company does not consider probable.

Tax assessments against Americel and Claro Brasil (PIS/COFINS)

In December 2005, the Brazilian Federal Revenue Service issued tax assessments against Claro Brasil and Americel in respect of PIS (Programa de Integração Social) and COFINS
(Contribuição para o Financiamento da Seguridade Social) taxes (which are levied on gross revenue), for 2000 through 2005. In addition, in March 2006, the Brazilian Federal Revenue Service issued 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.



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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 Americel and Claro Brasil are contesting in pending challenges, was
Ps. 9,709 million (approximately R$1,525 million), including fines and interest as of December 31, 2012. The Company has established a provision of Ps. 191 million (approximately R$30 million), in the accompanying financial statements
for the loss arising from these contingencies that AMX considers probable.

Separately, Claro Brasil and Americel have commenced lawsuits
against the Brazilian Federal Revenue Service seeking a ruling on constitutional grounds that they may exclude state value added tax (ICMS) payments and interconnection fees from the base used to calculate PIS and COFINS tax obligations. Pending a
final ruling and pursuant to applicable Brazilian procedure, the Company paid tax based on its position in the lawsuit, and established a provision for the disputed amounts. The total amount in dispute was approximately Ps. 8,448 million
(approximately R$1,327 million).

ICMS Tax Credits

The Brazilian Federal Revenue Service has issued multiple tax assessments against Claro Brasil and Americel alleging that they improperly claimed certain tax credits under the state value added tax
(Imposto sobre Operações relativas à Circulação de Mercadorias e sobre Prestações de Serviços de Transporte Interestadual e Intermunicipal e de Comunicação or
ICMS) regime in each Brazilian state. The Company is contesting all these tax assessments in multiple separate proceedings, first at the administrative level and then in the judicial courts, and these proceedings are at various stages.
AMX has received rulings in some of these cases, including some that are unfavorable to us and that the Company has appealed. The total amount of the tax assessments is approximately Ps. 22,652 million (approximately R$3,558 million), including
fines and interest as of December 31, 2012. The Company has established a provision of Ps. 1,955 million (approximately R$307 million), in the accompanying financial statements for the loss arising from these contingencies that AMX
considers probable.

Tax Credit for Income Tax Withheld Abroad

The Brazilian Federal Revenue Service issued tax assessments in the amount of Ps. 2,209 million (approximately R$347 million), against Claro Brasil alleging that it incorrectly offset tax withheld in
other countries against some of its Brazilian tax obligations. During 2011, Claro Brasil terminated its challenge with respect to Ps. 1,573 million (approximately R$247 million), in tax assessments and paid those amounts to the Brazilian
Federal Revenue Service, to preserve the right to offset the foreign tax withheld related to such tax assessments against its Brazilian tax obligations in future years. The total amount of the tax assessments that Claro Brasil is contesting as of
December 31, 2012 is approximately Ps. 668 million (approximately R$105 million). The Company has not made a provision in the accompanying financial statements to cover loss arising from this contingency.

EBC Funding

Claro Brasil and
Americel filed an injunction challenging a federal law that created the Brazilian Communication Company (Empresa Brasileira de Comunicação or EBC) that is to be partially funded by mobile operators. If Claro Brasil
and Americel are unsuccessful in such challenge, the total amount they would be required to contribute to EBC through December 31, 2012 is approximately Ps. 2,005 million (approximately R$315 million). AMX made a judicial deposit in
this amount. The Company has established a provision of Ps. 2,012 million (approximately R$316 million), in the accompanying financial statements for loss arising from this contingency, which AMX considers probable.



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FUST and FUNTTEL Funding

Anatel has issued tax assessments against Claro Brasil and Americel totaling Ps. 6,462 million (approximately R$1,015 million), relating to alleged underpayment of their funding obligations for the
Telecommunications System Universalization Fund (Fundo de Universalização dos Serviços de Telecomunicações or FUST) and the Telecom Technologic Development Fund (Fundo para o Desenvolvimento
Tecnológico das Telecomunicações or FUNTTEL) from 2006 to 2010. The assessments claim that interconnection and activation fee revenues should not have been excluded from the basis used to calculate funding
obligations. Claro Brasil and Americel have challenged the tax assessments, and the challenges are still pending. The Company has established a provision of Ps. 293 million (approximately R$46 million), in the accompanying financial statements
for the loss arising from these contingencies that AMX considers probable.

TFIInstallation Inspection Fee

Anatel charged Claro Brasil and Americel the amount of Ps. 4,692 million (approximately R$737 million) as of December 31, 2012, related to the
installation inspection fee (Taxa de Fiscalização de Instalação or TFI) allegedly due for the renewal of radio base stations and handsets. Claro Brasil and Americel have challenged the amount charged,
arguing that there was no new equipment installation that could lead to this charge, and the challenges are still pending. AMX has not established a provision in the accompanying financial statements and does not consider any loss to be probable.

Other tax contingencies

Claro Brasil and Americel have other on-going tax litigations in the total amount of Ps. 2,273 million (approximately R$357 million) as of December 31, 2012, regarding Brazilian Services Tax
(Imposto sobre Serviços or ISS), Brazilian Economic Intervention Contribution (Contribuição de Intervenção no Domínio Econômico or CIDE), Provisional Contribution on Financial
Transfers (Contribuição Provisória sobre Movimentação ou Transmissão de Valores e de Créditos e Direitos de Natureza Financeira or CPMF), Financial Operations Tax (Imposto sobre
Operações de Crédito, Câmbio e Seguro, ou relativas a Títulos e Valores Mobiliários or IOF), income tax (Imposto da Renda or IR), social contribution on net income
(Contribuição Social sobre o Lucro Líquido or CSLL), public price concerning the administration of numbering resources (Preço Público Relativo à Administração dos Recursos de
Numeração or PPNUM) and import tax (Imposto de Importação or II). The Company has established a provision of Ps. 57 million (approximately R$9 million), in the accompanying financial
statements for the loss arising from these contingencies that AMX considers probable.

Other civil and labor contingencies

Claro Brasil and its subsidiaries are also party to other claims in the amount of Ps. 7,506 million (approximately R$1,179
million), including claims filed by its telephone service customers and claims relating to environmental matters. The Company is contesting the cases, which are in various stages. The Company has established a provision of Ps. 176 million
(approximately R$26 million), in the accompanying financial statements for the loss arising from these contingencies that AMX considers probable.

Claro Brasil and its subsidiaries are party to labor claims in the amount of Ps. 3,342 million (approximately R$525 million), filed by its current and former employees, alleging compensation for
pension and other social benefits, overtime work, outsourcing and equal pay. The Company has established a provision of Ps. 331 million (approximately R$49 million), in the accompanying financial statements for the loss arising from these
contingencies that AMX considers probable.



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Disputes with third parties

Claro Brasil and Americel are parties to certain disputes with third parties in connection with former sales agents, class actions (ACPs), real estate issues, and other matters in the aggregate
amount of Ps. 2,986 million (approximately R$469 million). The Company has established a provision of Ps. 57 million (approximately R$9 million), in the accompanying financial statements for the loss arising from these contingencies
that AMX considers probable.

Embrapar and subsidiaries

Implementation of the new national domestic telephone number system

As a result of
alleged service disruptions caused during the implementation of a new domestic dialing system in 1999, Embratel was fined by Anatel and DPDC, and several class actions were initiated against it. The aggregate total amount of these contingencies is
Ps. 1,070 million (approximately R$168 million). The Company is contesting these claims and has established a provision of Ps. 197 million (approximately R$31 million), in the accompanying financial statements for the loss arising from
these contingencies that AMX considers probable.

Administrative proceedings (PADOs)

Anatel filed several administrative proceedings (Procedimentos Administrativos de Descumprimento de Obrigaçãoor
PADOs), against Embratel and Embrapar in the amount of Ps. 4,889 million (approximately R$768 million), because of alleged noncompliance with quality targets set by Anatel. The Company is contesting the PADOs on various grounds. The
Company has established a provision of Ps. 64 million (approximately R$10 million), in the accompanying financial statements for the loss arising from these contingencies that AMX considers probable.

Brazilian value-added goods and services tax (ICMS)

Embratel, Primesys Soluções Empresariais S.A. (Primesys), TV SAT and Telmex Do Brasil Ltda. (TdB) received assessments in the amount of Ps. 5,373 million
(approximately R$844 million), from the tax authorities related to nonpayment of ICMS and alleged ICMS tax credits incorrectly taken. The Company is contesting these tax assessments in multiple separate proceedings at the administrative level and in
the judicial courts. These proceedings are in different stages, and AMX cannot predict the timing of a final outcome. The Company has established a provision of Ps. 51 million (approximately R$8 million), in the accompanying financial
statements for the loss arising from these contingencies that AMX considers probable.

Star One has received tax assessments in the amount of
Ps. 10,600 million (approximately R$1,665 million), alleging that the provision of satellite capacity is subject to ICMS tax. The Company is contesting these tax assessments in multiple separate proceedings, and the Company has obtained two
appealable favorable judicial decisions in two proceedings by second degree Brazilian Courts, although a resolution is still pending for the majority of the proceedings. The Company has not established a provision in the accompanying financial
statements to cover loss arising from this contingency.

Brazilian Social Welfare Tax on Service Exports (PIS)

Embrapar, Embratel and TdB have tax contingencies of Ps. 1,171 million (approximately R$184 million), mostly related to the contributions of PIS
prior to 1995, which the tax authorities allege were incorrectly offset. The Company is contesting these tax assessments in proceedings that are in different stages. The Company has established a provision of Ps. 51 million (approximately R$8
million), in the accompanying financial statements for the loss arising from these contingencies that AMX considers probable.



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Brazilian Social Welfare Tax for Service Export Security Tax (COFINS)

Embrapar, Embratel and TdB have tax contingencies of Ps. 1,604 million (approximately R$252 million), at December 31, 2012 related to the
payment of COFINS. The Company is contesting these tax assessments in proceedings that are in different stages. AMX has established a provision of Ps. 589 million (approximately R$100 million), in the accompanying financial statements for the
loss arising from these contingencies that AMX considers probable.

FUST and FUNTTEL Funding

Anatel and the Brazilian Ministry of Communications (MINICOM) have issued tax assessments against Embratel, Star One, Primesys and TdB totaling Ps.
5,876 million (approximately R$923 million), relating to alleged underpayment of their funding obligations for FUST and FUNTTEL. The assessments claim that interconnection and others revenues should not have been excluded from the basis used to
calculate funding obligations. The companies have challenged the tax assessments, and such challenges are pending. The Company has not established a provision in the accompanying financial statements to cover loss arising from these contingencies.
The Company has made a judicial deposit in the amount of Ps. 1,057 million (approximately R$166 million) related to part of the contingencies relating to FUST.

Brazilian Services Tax (ISS)

The Municipal Revenue Services have issued tax
assessments against Embratel, Primesys, Brasil Center Ltda. (Brasil Center) and TdB totaling Ps. 3,654 million (approximately R$574 million) arising from nonpayment of ISS in connection with the provision of certain services. The
companies have challenged the tax assessments on the grounds that such services are not subject to ISS tax, and the challenges are pending. The Company has not established a provision in the accompanying financial statements to cover loss arising
from these contingencies.

Other tax contingencies

Our Brazilian subsidiaries are engaged in a number of additional administrative and legal proceedings challenging tax assessments, as summarized below:



| |  |  | Embrapar, Embratel, Star One and TdB have received assessments in the total amount of Ps. 5,895 million (approximately R$926 million), mainly
related to allegedly incorrect deductions for purposes of Income Tax (Imposto sobre Renda de Pessoa Jurídicaor IRPJ) and CSLL and the nonpayment of IRRF and CIDE over payments related to outbound traffic. AMX is
challenging those assessments in administrative and judicial proceedings. The Company has established a provision of Ps. 13 million (approximately R$2 million), in the accompanying financial statements for the loss arising from these
contingencies that AMX considers probable.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Embratel was fined Ps. 2,356 million (approximately R$370 million), by the Brazilian Federal Revenue Service for not making certain filings in the
correct form from 2002 through 2005. The Company is contesting this fine on various grounds. The Company has not established a provision in the accompanying financial statements to cover loss arising from this contingency.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Embratel, Star One, TdB and Primesys, have other on-going tax litigations in the amount of Ps. 2,763 million (approximately R$434 million),
relating to the offsetting of IRPJ, PIS, COFINS, CIDE, CSLL and IRRF (Imposto de Renda Retido na Fonte or Brazilian Foreign Paid Income Tax) against allegedly improper IRPJ and ILL (Imposto Sobre o Lucro Líquido or Brazilian Net
Income Tax) credits. The Company has not established a provision in the accompanying financial statements to cover loss arising from these contingencies.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Disputes with third parties

Embratel, TdB, Primesys and Brasil Center are parties
to a number of cases on a range of matters, including, among other things, disputes with former sales agents and disputes with former employees regarding health care



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payments. The cases, which are in advanced stages of the litigation process, are for claims in the amount of Ps. 2,941 million (approximately R$462 million). The Company has established
a provision of Ps. 980 million (approximately R$154 million), in the accompanying financial statements for the loss arising from these contingencies that AMX considers probable.

Other civil and labor contingencies

Embratel and its subsidiaries are also party to
other claims in the amount of Ps. 2,897 million (approximately R$455 million), including claims filed by its telephone service customers and claims relating to environmental matters. The Company is contesting the cases, which are in various
stages. The Company has established a provision of Ps. 344 million (approximately R$54 million), in the accompanying financial statements for the loss arising from these contingencies that AMX considers probable.

In April 2009, Star One was notified of an arbitration proceeding initiated against it by two international telecom operators seeking restitution damages
for up to Ps. 950 million (approximately US$73 million), for alleged commercial losses arising from contracts executed in 2002 and 2004. In December 2012, the tribunal issued a final decision and claimants were awarded damages in the amount of
Ps. 53 million (approximately US$4.1 million), which amount includes interests and arbitration costs.

Embratel and its subsidiaries
are party to labor claims in the amount of Ps. 3,667 million (approximately R$576 million), filed by its current and former employees, alleging compensation for pension and other social benefits, overtime work, outsourcing and equal pay.
The Company has established a provision of Ps. 618 million (approximately R$97 million), in the accompanying financial statements for the loss arising from these contingencies that AMX considers probable.

Net

ICMS

In 2011, Net Serviços de Comunicação S.A. (Net) was assessed by the Secretary of the Treasury of the State of Sao Paulo
for the loss of the tax benefit of reducing the ICMS base it is entitled to, alleging that Net did not include revenues from the rental of equipment in the ICMS base. The amount of this assessment as of December 31, 2012 was Ps. 1,744
(approximately R$274 million). The tax authority claims that from January 2008 to November 2009, Net should have paid the ICMS on pay TV services revenues at a rate of 25% instead of the rate of 10% actually applied by Net. In the tax
authoritys view, Net lost the rate reduction benefit allowed by ICMS Agreement No.57/99 because Net did not include locação de equipamento (rental of equipment) in its revenues. Net based its calculation on the
interpretation of the Brazilian Superior Court that the rental of equipment should not be confused with a subscription TV service, and therefore cannot be taxed by ICMS and, consequently, there is no motive to lose the tax benefit as alleged by the
tax authority. However, considering that there is no specific precedent (at both the administrative and judicial levels) on the issue, it is not possible to predict the outcome of this matter yethas and established a provision in the accompanying
financial statements.

CSLL/IRPJ

In 2009, Net São Paulo Ltda. (a Net subsidiary) received a tax assessment issued by the Brazilian Internal Revenue Service questioning part of the expenses considered as deductible in its
calculation of IRPJ and CSLL from 2004 to 2008, amounting to Ps. 3,483 million (approximately R$547 million). In October 2010, a first instance decision reduced this amount to Ps. 2,362 million (approximately R$371 million). Net has
determined that a loss is possible but not probable and accordingly AMX has not established a provision in the accompanying financial statements. As of December 31, 2012, the total amount in dispute was approximately Ps. 2,088 million
(approximately R$328 million) for IRPJ and Ps. 745 million (approximately R$117 million) for CSLL.



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Imposto sobre Operações Financeiras (IOF)

Net and its controlled companies have centralized cash management and cash transfers made under a current intercompany account. Management determined that
such transfers are not subject to financial transaction tax IOF charges. However, the Federal Revenue Service may deem such transfers to be inter-company loans. In the event such transfers are deemed to be inter-company loans, AMX may be subject to
IOF, on the amount of the loans. IOF applies to loans between non-financial entities at a maximum rate of 1.5% per year where the principal amount and the term for repayment is fixed, and at a daily rate of 0.0041% on the outstanding balance,
without limit on the total amount of tax payable, if the principal amount of the loan is not fixed. In view of certain adverse court decisions as to the applicability of this law, the Company has established a provision of Ps. 643 million
(approximately R$101 million) as of December 31, 2012.

Conecel

Tax Assessments

During 2008, the Ecuadorian Revenue Services (SRI)
notified Conecel of tax assessments in the amount of Ps. 1,795 million (approximately US$138 million) (not including interest and penalties), relating to special consumption (ICE), value-added, income and withholding taxes for the years
2003 to 2006. In March 2008, Conecel paid the SRI Ps. 182 million (approximately US$14 million), in respect of the aforesaid tax assessments (including fines) and filed challenges with the SRI with respect to Ps. 1,652 million
(approximately US$127 million). 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, in January 2009, Conecel filed a lawsuit before a
Tax Court in Guayaquil challenging the tax assessments and providing a bank guarantee of Ps. 169 million (approximately US$13 million), which represented 10% of the contested amount. The Tax Court issued its final resolution in March 2012. The
Tax Courts resolution was favorable with respect to Ps. 312 million (US$24 million), of the disputed amount. The Company has appealed the unfavorable portion of the resolution before the National Court of Justice (Corte Nacional
de Justicia), and such appeal is still pending.

In addition, in 2011 and 2012 the SRI notified Conecel of tax assessments in the amount
of Ps. 1,548 million (approximately US$119 million), relating to the same matter discussed above, but for the 2007 and 2008 fiscal years. Conecel filed lawsuits before a Tax Court in Guayaquil challenging the tax assessments and such lawsuits
are still pending.

The Company has established a provision of Ps. 390 million (approximately US$30 million) in the accompanying
financial statements for the loss arising from these contingencies that AMX considers probable.



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18. Related Parties

a) The following is an analysis of the balances with related parties at December 31, 2011 and 2012. 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.



|                                                                       |  |      |           |  |      |     |           | 
|---------------------------------------------------------------------- |  | ---- | --------- |  | ---- | --- | --------- | 
|                                                                       |  | 2011 |           |  | 2012 |    
|Accounts receivable:                                                   |  |      |           |  |      |     |           | 
|Sanborn Hermanos, S.A.                                                 |  | Ps.  | 241,448   |  |      | Ps. | 149,010   | 
|Sears Roebuck de México, S.A. de C.V.                                  |  |      | 179,612   |  |      |     | 245,075   | 
|Net Serviços de Comunicação, S.A. (NET)                                |  |      | 2,826,214 |  |      |     |          | 
|AT&T Corp. (AT&T)                                                      |  |      | 55,443    |  |      |     | 56,445    | 
|Patrimonial Inbursa, S.A.                                              |  |      | 52,864    |  |      |     | 164,267   | 
|Other                                                                  |  |      | 58,318    |  |      |     | 74,256    | 
|                                                                       |  |      |           |  |      |     |           | 
|Total                                                                  |  | Ps.  | 3,413,899 |  |      | Ps. | 689,053   | 
|                                                                       |  |      |           |  |      |     |           | 
|Accounts payable:                                                      |  |      |           |  |      |     |           | 
|Fianzas Guardiana Inbursa, S.A. de C.V.                                |  | Ps.  | 120,273   |  |      | Ps. | 231,678   | 
|Seguros Inbursa, S.A. de C.V.                                          |  |      | 12,595    |  |      |     |          | 
|Net Serviços de Comunicação, S.A. (NET)                                |  |      | 616,929   |  |      |     |          | 
|Operadora Cicsa, S.A. de C.V.                                          |  |      | 161,936   |  |      |     | 272,293   | 
|PC Industrial, S.A. de C.V.                                            |  |      | 168,890   |  |      |     | 187,111   | 
|Microm, S.A. de C.V.                                                   |  |      | 45,970    |  |      |     | 77,354    | 
|Grupo Financiero Inbursa, S.A.B. de C.V.                               |  |      | 45,729    |  |      |     | 63,269    | 
|Conductores Mexicanos Eléctricos y de Telecomunicaciones, S.A. de C.V. |  |      | 18,898    |  |      |     | 53,265    | 
|Acer Computec México, S.A. de C.V.                                     |  |      | 4,575     |  |      |     | 28,886    | 
|Sinergia Soluciones Integrales de Energia, S.A. de C.V.                |  |      | 40,560    |  |      |     | 74,541    | 
|Eidon Software, S.A. de C.V.                                           |  |      | 64,079    |  |      |     | 34,660    | 
|AT&T                                                                   |  |      | 7,495     |  |      |     | 6,838     | 
|Other                                                                  |  |      | 322,336   |  |      |     | 224,777   | 
|                                                                       |  |      |           |  |      |     |           | 
|Total                                                                  |  | Ps.  | 1,630,265 |  |      | Ps. | 1,254,672 | 
|                                                                       |  |      |           |  |      |     |           | 



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b) For the years ended December 31, 2010, 2011 and 2012, the Company conducted the following
transactions with related parties:



|                                                                                                          |  |      |           |  |      |     |            |      |  |     |           | 
|--------------------------------------------------------------------------------------------------------- |  | ---- | --------- |  | ---- | --- | ---------- | ---- |  | --- | --------- | 
|                                                                                                          |  | 2010 |           |  | 2011 |     |            | 2012 | 
|Investments and expenses:                                                                                 |  |      |           |  |      |     |            |      |  |     |           | 
|Construction services, purchases of materials,
inventories and fixed assets(1)                            |  | Ps.  | 3,411,260 |  |      | Ps. | 5,391,385  |      |  | Ps. | 6,014,441 | 
|Insurance premiums, fees paid for administrative and operating services, brokerage services and others(2) |  |      | 2,215,599 |  |      |     | 2,354,859  |      |  |     | 2,411,663 | 
|Call termination costs                                                                                    |  |      | 187,971   |  |      |     | 182,411    |      |  |     | 46,566    | 
|Interconnection expenses(3)                                                                               |  |      | 3,612,950 |  |      |     | 3,919,841  |      |  |     | 250,426   | 
|Other services                                                                                            |  |      | 40,052    |  |      |     | 371,807    |      |  |     | 981,496   | 
|                                                                                                          |  |      |           |  |      |     |            |      |  |     |           | 
|                                                                                                          |  | Ps.  | 9,467,832 |  |      | Ps. | 12,220,303 |      |  | Ps. | 9,704,592 | 
|                                                                                                          |  |      |           |  |      |     |            |      |  |     |           | 
|                                                                                                          |  |      |          
|Revenues:                                                                                                 |  |      |           |  |      |     |            |      |  |     |           | 
|Sale of long-distance services and other telecommunications services(4)                                   |  | Ps.  | 4,847,286 |  |      | Ps. | 5,266,597  |      |  | Ps. | 352,086   | 
|Sale of materials and other services                                                                      |  |      | 560,342   |  |      |     | 523,795    |      |  |     | 447,390   | 
|Call termination revenues(5)                                                                              |  |      | 666,013   |  |      |     | 512,897    |      |  |     | 486,230   | 
|                                                                                                          |  |      |           |  |      |     |            |      |  |     |           | 
|                                                                                                          |  | Ps.  | 6,073,641 |  |      | Ps. | 6,303,289  |      |  | Ps. | 1,285,706 | 
|                                                                                                          |  |      |           |  |      |     |            |      |  |     |           | 



|1) | In 2012, this amount includes Ps.5,867,810 (Ps.5,171,398 in 2011 and Ps.2,720,123 in 2010) for network construction services and construction materials purchased from
subsidiaries of Grupo Carso, S.A.B. de C.V. (Grupo Carso).
|-- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|2) | In 2012, this amount includes Ps.704,200 (Ps.708,088 and Ps.343,810 in 2011 and 2010, respectively) for network maintenance services performed by Grupo Carso
subsidiaries; Ps.599,784 (Ps.584,254 and Ps.632,059 in 2011 and 2010, respectively) for software services provided by an associate; Ps.669,118 (Ps.605,373 and Ps.518,680 in 2011 and 2010, respectively) for insurance premiums with Seguros Inbursa,
S.A. (Seguros), which, in turn, places most of such insurance with reinsurers; and Ps.130,101 (Ps.160,080 and Ps.159,083 in 2010 in 2011 and 2010) 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 of Ps.4,641,231 and Ps.3,402,843 in 2011 and 2010, respectively, from NET; and Ps. 235,804
(Ps.135,302 in 2011 and Ps.229,941 in 2010) from AT&T subsidiaries.
|-- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|5) | Includes costs and revenues with AT&T subsidiaries.
|-- | ---------------------------------------------------

c) During 2012, the Company paid Ps.942,090 (Ps. 726,524 and Ps.755,127 in 2011 and 2010, respectively) for short-term direct benefits to its executives.

19. Shareholders Equity

Shares

a) At
December 31, 2012 and 2011, the Companys capital stock was represented by 75,841,000,000 shares (23,424,632,660 Series AA shares, 712,842,183 Series A shares and 51,703,525,157 Series L), and by 76,992,000,000 shares
(23,424,632,660 Series AA shares, 756,967,714 Series A shares and 52,810,399,626 Series L shares), respectively (these figures reflects (i) the stock split effected in June 2011; (ii) the merger with
AMTEL in 2006; (iii) the placement of 8,438,193,725 Series L treasury shares resulting from the tender offers for Carso Global Telecom, S.A.B. de C.V. and Telmex Internacional, S.A.B. de C.V., which were



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completed on June 16, 2010; and (iv) the exchanges (conversiones) of Series A shares for Series L shares made by third parties through S.D. Indeval
Institución para el Depósito de Valores, S.A. de C.V.).

b) The capital stock of the Company consists of a minimum fixed portion
of Ps. 397,873 (nominal amount), represented by 95,489,724,196 shares (including treasury shares available for placement in accordance with the provisions of the Mexican Securities Law), of which (i) 23,424,632,660 are common Series
AA shares; (ii) 776,818,130 are common Series A shares; and (iii) 71,288,273,406 are Series L shares, all of them fully subscribed and paid.

c) At December 31, 2012 and 2011, the Companys treasury shares available for placement in accordance with the provisions of the Mexican Securities Law, were represented by 19,648,724,196 shares
(19,642,211,887 Series L shares and 6,512,309 Series A shares), and 18,497,724,196 shares (18,495,699,196 Series L shares and 2,025,000 Series A shares), respectively (these figures reflects (i) the stock split effected in June
2011; and (ii) the placement of 8,438,193,725 Series L treasury shares resulting from the tender offers 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).

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 (Registro Nacional de Valores), 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, 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 said 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. 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 not represent 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.

Dividends

f) On April 27, 2011,
the Companys shareholders approved payment of a cash dividend of $0.36 pesos per share to each of the shares of its capital stock series AA, A and L, which was subsequently adjusted based on the resolutions
adopted regarding the two for one stock split that was effective in June 2011;

g) On April 25, 2012, the Companys shareholders
approved, among others resolution, the (i) payment of a cash dividend of $0.20 pesos per share to each of the shares of its capital stock series AA, A and L, payable in two equal installments of $0.10 pesos;
and (ii) increase the amount of funds available for the acquisition of the Companys own shares by Ps. 30 billion pursuant to Article 56 of the Mexican Securities Market Law.



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The aforementioned dividends were paid from the consolidated net taxed profits account (cuenta de utilidad
fiscal neta consolidada).

20. Income Tax, Asset Tax and Flat-Rate Business Tax

I) Mexico

a) Beginning
January 2002, the Ministry of Finance and Public Credit authorized América Móvil to consolidate its tax results with its Mexican subsidiaries. In July 2010, the Company obtained authorization from the Ministry of Finance and Public
Credit to incorporate to its consolidation regime the tax results of CGT (Carson Global Telecom) and its subsidiaries, Telmex and its Mexican subsidiaries, and Telint and its Mexican subsidiaries.

Tax consolidation regime in Mexico is a tax mechanism through which taxpayers file a single tax return for all Mexican subsidiaries and the holding
company (in this case, América Móvil as a controlled entity) as if they were a single entity.

b) Flat-rate business tax (FRBT)

The FRBT is computed by applying the 17.5% rate in 2010, 2011 and 2012 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. To determine FRBT payable, income tax paid in a given
period is first subtracted from the FRBT of the same period. In 2010, 2011 and 2012 América Móvil paid income tax, thus FRBT was not applicable.

c) Corporate tax rate

The income tax rate applicable in Mexico for 2010, 2011 and 2012 was 30%.

d) An analysis of income tax charged to results of operations for the years ended December 31, 2010, 2011 and 2012 is as follows:



|                              |  |      |            |   |      |     |            |      |  |     |            |  
|----------------------------- |  | ---- | ---------- | - | ---- | --- | ---------- | ---- |  | --- | ---------- | -
|                              |  | 2010 |            |   | 2011 |     |            | 2012 | 
|In Mexico:                    |  |      |            |   |      |     |            |      |  |     |            |  
|Current year income tax       |  | Ps.  | 35,358,801 |   |      | Ps. | 31,933,880 |      |  | Ps. | 27,123,124 |  
|Deferred income tax           |  |      | (6,609,769 | ) |      |     | (5,004,378 | )    |  |     | 1,176,649  |  
|Effect of changes in tax rate |  |      | 62,050     |   |      |     | (99,763    | )    |  |     | 155,599    |  
|Foreign:                      |  |      |            |   |      |     |            |      |  |     |            |  
|Current year income tax       |  |      | 12,966,253 |   |      |     | 18,940,637 |      |  |     | 21,047,770 |  
|Deferred income tax           |  |      | (5,563,716 | ) |      |     | (5,349,714 | )    |  |     | (3,124,451 | )
|                              |  |      |            |   |      |     |            |      |  |     |            |  
|                              |  | Ps.  | 36,213,619 |   |      | Ps. | 40,420,662 |      |  | Ps. | 46,378,691 |  
|                              |  |      |            |   |      |     |            |      |  |     |            |  



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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, |     
|                                                                 |  | 2010                    |      |    | 2011 |  |      | 2012 | 
|Statutory income tax rate in Mexico                              |  |                         | 30.0 | %  |      |  | 30.0 | %    |  |  | 30.0 | % 
|Impact of non-deductible and non-taxable items:                  |  |                         |      |    |      |  |      |      |  |  |      |   
|Tax inflation effect                                             |  |                         | 1.6  | %  |      |  | 2.1  | %    |  |  | 4.0  | % 
|Operations of foreign subsidiaries                               |  |                         | (0.4 | )% |      |  | (1.0 | %)   |  |  | (0.3 | %)
|Other                                                            |  |                         | 0.4  | %  |      |  | (0.1 | %)   |  |  | (3.9 | %)
|                                                                 |  |                         |      |    |      |  |      |      |  |  |      |   
|Effective tax rate on Mexican operations                         |  |                         | 31.6 | %  |      |  | 31.0 | %    |  |  | 29.8 | % 
|Change in estimated realization of deferred tax assets in Brazil |  |                         | (4.4 | )% |      |  | (1.5 | %)   |  |  | (0.3 | %)
|Use of tax credits in Brazil                                     |  |                         | (1.3 | )% |      |  | (0.4 | %)   |  |  | (1.1 | %)
|Revenues and costs of subsidiaries operations                   |  |                         | 0.9  | %  |      |  | 2.3  | %    |  |  | 5.1  | % 
|                                                                 |  |                         |      |    |      |  |      |      |  |  |      |   
|Effective tax rate                                               |  |                         | 26.8 | %  |      |  | 31.4 | %    |  |  | 33.5 | % 
|                                                                 |  |                         |      |    |      |  |      |      |  |  |      |   

f) An analysis of temporary differences giving rise to the net deferred tax liability is as follows:



|                                                              |  |                 |             |   |      |     |             |  
|------------------------------------------------------------- |  | --------------- | ----------- | - | ---- | --- | ----------- | -
|                                                              |  | At December 31, |            
|                                                              |  | 2011            |             |   | 2012 |    
|Deferred tax assets                                           |  |                 |             |   |      |     |             |  
|Accrued liabilities                                           |  | Ps.             | 6,194,778   |   |      | Ps. | 6,236,552   |  
|Other                                                         |  |                 | 1,384,621   |   |      |     | 515,625     |  
|Deferred revenues                                             |  |                 | 9,080,070   |   |      |     | 3,708,439   |  
|Tax losses                                                    |  |                 | 4,335,011   |   |      |     | 2,886,415   |  
|                                                              |  |                 |             |   |      |     |             |  
|                                                              |  |                 | 20,994,480  |   |      |     | 13,347,031  |  
|Deferred tax liabilities:                                     |  |                 |             |   |      |     |             |  
|Fixed assets                                                  |  |                 | (18,766,098 | ) |      |     | (20,941,366 | )
|Inventories                                                   |  |                 | (348,507    | ) |      |     | 2,738,120   |  
|Licenses                                                      |  |                 | (308,025    | ) |      |     | (2,919,966  | )
|Deferred effects of tax consolidation in Mexican subsidiaries |  |                 | (7,204,850  | ) |      |     | (7,169,028  | )
|Royalty advances                                              |  |                 | (3,185,298  | ) |      |     | (30,000     | )
|Pensions                                                      |  |                 | (6,251,882  | ) |      |     | (7,445,175  | )
|Other                                                         |  |                 | (1,831,936  | ) |      |     | 882,610     |  
|                                                              |  |                 |             |   |      |     |             |  
|                                                              |  |                 | (37,896,596 | ) |      |     | (34,884,805 | )
|                                                              |  |                
|Plus:                                                         |  |                 |             |   |      |     |             |  
|Effect of changes in tax rate                                 |  |                 | 150,400     |   |      |     | 305,999     |  
|                                                              |  |                 |             |   |      |     |             |  
|Total deferred taxes                                          |  | Ps.             | (16,751,716 | ) |      | Ps. | (21,231,775 | )
|                                                              |  |                 |             |   |      |     |             |  



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An analysis of the effects of temporary differences within the deferred tax that was (charged) or credited
to results of operations is as follows:



|                                            |  |      |           |   |                 |     |            |      |  |     |            |  
|------------------------------------------- |  | ---- | --------- | - | --------------- | --- | ---------- | ---- |  | --- | ---------- | -
|                                            |  |      |           |   | At December 31, |    
|                                            |  | 2010 |           |   | 2011            |     |            | 2012 | 
|Deferred tax assets:                        |  |      |           |   |                 |     |            |      |  |     |            |  
|Accrued liabilities                         |  | Ps.  | 537,956   |   |                 | Ps. | 1,832,791  |      |  | Ps. | 41,774     |  
|Other                                       |  |      | 476,193   |   |                 |     | (896,440   | )    |  |     | (868,996   | )
|Deferred revenues                           |  |      | (254,589  | ) |                 |     | 6,719,623  |      |  |     | (5,371,631 | )
|Tax losses                                  |  |      | 84,467    |   |                 |     | 275,777    |      |  |     | (1,448,596 | )
|                                            |  |      |           |   |                 |     |            |      |  |     |            |  
|                                            |  |      | 844,027   |   |                 |     | 7,931,751  |      |  |     | (7,647,449 | )
|Deferred tax liabilities:                   |  |      |           |   |                 |     |            |      |  |     |            |  
|Fixed assets                                |  |      | 1,310,841 |   |                 |     | 99,556     |      |  |     | (1,519,682 | )
|Inventories                                 |  |      | 195,373   |   |                 |     | 4,261      |      |  |     | 3,086,627  |  
|Licenses                                    |  |      | (324,939  | ) |                 |     | 85,110     |      |  |     | 462,077    |  
|Forward contracts with affiliated companies |  |      | 3,531,564 |   |                 |     |           |      |  |     |           |  
|Royalty advances                            |  |      | 500,000   |   |                 |     | (655,298   | )    |  |     | 3,155,298  |  
|Pensions                                    |  |      | (243,841  | ) |                 |     | (1,441,886 | )    |  |     | (1,193,293 | )
|Other                                       |  |      | 8,342     |   |                 |     | (601,143   | )    |  |     | 4,055,398  |  
|                                            |  |      |           |   |                 |     |            |      |  |     |            |  
|                                            |  |      | 4,977,340 |   |                 |     | (2,509,400 | )    |  |     | 8,046,425  |  
|                                            |  |      |           |   |                 |     |            |      |  |     |            |  
|Plus:                                       |  |      |           |   |                 |     |            |      |  |     |            |  
|Effect of changes in tax rate               |  |      | (62,050   | ) |                 |     | (67,387    | )    |  |     | 155,599    |  
|Income tax from tax consolidation           |  |      | (716,626  | ) |                 |     | (107,445   | )    |  |     | 35,822     |  
|                                            |  |      |           |   |                 |     |            |      |  |     |            |  
|Total deferred taxes                        |  | Ps.  | 5,042,691 |   |                 | Ps. | 5,247,519  |      |  | Ps. | 590,397    |  
|                                            |  |      |           |   |                 |     |            |      |  |     |            |  

The effects of temporary differences giving rise to the deferred tax asset at December 31, 2011 and 2012 is as
follows:



|                          |  |                 |            |   |      |     |            |  
|------------------------- |  | --------------- | ---------- | - | ---- | --- | ---------- | -
|                          |  | At December 31, |           
|                          |  | 2011            |            |   | 2012 |    
|Deferred tax assets:      |  |                 |            |   |      |     |            |  
|Accrued liabilities       |  | Ps.             | 13,541,048 |   |      | Ps. | 13,716,389 |  
|Deferred revenues         |  |                 | 789,875    |   |      |     | 942,077    |  
|Other                     |  |                 | 4,478,188  |   |      |     | 3,074,742  |  
|Tax losses                |  |                 | 14,567,430 |   |      |     | 15,666,862 |  
|                          |  |                 |            |   |      |     |            |  
|                          |  |                 | 33,376,541 |   |      |     | 33,400,070 |  
|Deferred tax liabilities: |  |                 |            |   |      |     |            |  
|Fixed assets              |  |                 | (74,126    | ) |      |     | 716,590    |  
|Licenses                  |  |                 | (389,087   | ) |      |     | (332,501   | )
|Other                     |  |                 | 161,130    |   |      |     | 211,911    |  
|                          |  |                 |            |   |      |     |            |  
|                          |  |                 | (302,083   | ) |      |     | 596,000    |  
|                          |  |                 |            |   |      |     |            |  
|Total deferred taxes      |  | Ps.             | 33,074,458 |   |      | Ps. | 33,996,070 |  
|                          |  |                 |            |   |      |     |            |  

At December 31, 2010, 2011 and 2012, the above table includes the deferred tax assets of TracFone, Puerto Rico,
Argentina, Colombia, Honduras, Guatemala and Brazil.



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An analysis of the effects of temporary differences within the deferred tax that was (charged) or credited
to results of operations is as follows:



|                          |  |                 |            |   |      |     |           |      |  |     |             | 
|------------------------- |  | --------------- | ---------- | - | ---- | --- | --------- | ---- |  | --- | ----------- | 
|                          |  | At December 31, |           
|                          |  | 2010            |            |   | 2011 |     |           | 2012 | 
|Deferred tax assets:      |  |                 |            |   |      |     |           |      |  |     |             | 
|Accrued liabilities       |  | Ps.             | 1,798,968  |   |      | Ps. | 1,176,059 |      |  | Ps. | (1,221,378) | 
|Deferred revenues         |  |                 | 317,443    |   |      |     | 303,386   |      |  |     | 152,202     | 
|Other                     |  |                 | 343,207    |   |      |     | 252,735   |      |  |     | (1,677,171) | 
|Tax losses                |  |                 | 6,580,325  |   |      |     | 1,719,089 |      |  |     | (534,335)   | 
|                          |  |                 |            |   |      |     |           |      |  |     |             | 
|                          |  |                 | 9,039,943  |   |      |     | 3,451,269 |      |  |     | (3,280,682) | 
|Deferred tax liabilities: |  |                 |            |   |      |     |           |      |  |     |             | 
|Fixed assets              |  |                 | (1,565,298 | ) |      |     | (266,646  | )    |  |     | 790,716     | 
|Licenses                  |  |                 | (132,038   | ) |      |     | 104,660   |      |  |     | 56,586      | 
|Other                     |  |                 | (61,197    | ) |      |     | 195,333   |      |  |     | 50,781      | 
|                          |  |                 |            |   |      |     |           |      |  |     |             | 
|                          |  |                 | (1,758,533 | ) |      |     | 33,347    |      |  |     | 898,083     | 
|                          |  |                 |            |   |      |     |           |      |  |     |             | 
|Total deferred taxes      |  | Ps.             | 7,281,410  |   |      | Ps. | 3,484,616 |      |  | Ps. | (2,382,599) | 
|                          |  |                 |            |   |      |     |           |      |  |     |             | 

In Brazil, 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 income taxes expense for the years ended December 31, 2010 and 2011, attributable to the change in estimate over the
recoverability of the tax loss carryforwards, was Ps.9,038,423 and Ps.8,692,374 , respectively, and is shown as a credit in deferred income tax.

g) Changes in the Mexican Tax Environment effective since 2010.

On December 7, 2009, a tax
reform was approved that increased the corporate income tax rate from 28% to 30% for the years from 2010 to 2012 and was scheduled to be decreased to 29% in 2013 and 28% in 2014 and thereafter. However, the Mexican Federal Internal Revenue Act
enacted in December 2012 established that the corporate income tax rate will remain at 30% in 2013 and that the income tax rate reduction to 29% will take effect in 2014 and to 28% in 2015 and thereafter. The effect of the change in the corporate
income tax rate on deferred taxes as of December 31, 2012 resulted in a charged to deferred tax expense of Ps. 155,599 in 2012.

Beginning in 2010, as consequence of the tax consolidation regime, the Mexican tax authorities established a methodology named partial tax
-consolidation or recapture in order to identify all concepts that generated a deferral in the tax payment. This recapture effect is applied for the principal concepts that generated an income tax deferral in the sixth year prior
to this change in the tax law. Those concepts are as follows:



|i) | Tax losses of the holding company or the controlled companies on stand-alone basis
|-- | ----------------------------------------------------------------------------------



|ii) | Loss on the sale of shares issued by the controlled companies
|--- | -------------------------------------------------------------



|iii) | Book dividends paid from sources other than the CUFIN
|---- | -----------------------------------------------------



|iv) | Difference between consolidated and stand-alone basis CUFIN balances of the controlled companies and their holding.
|--- | -------------------------------------------------------------------------------------------------------------------



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For the recapture effects (mentioned above), if any, the payment of the income tax previously deferred
should be as follows:



|     |  |                        |    |  
|---- |  | ---------------------- | -- | -
|Year |  | Portion to be remitted |   
|2012 |  |                        | 25 | %
|2013 |  |                        | 20 | %
|2014 |  |                        | 15 | %
|2015 |  |                        | 15 | %

In the case of the Company, the recapture effect derived from the tax consolidation is mainly represented by tax losses
utilized in the tax consolidation that have not being used on a stand-alone basis by the controlling company or the holding companies.

h) At
December 31, 2011 and 2012, the balance of the contributed capital account (CUCA) is Ps. 363,240,830 and Ps. 387,806,147, respectively, and the CUFIN balance is Ps. 318,082,830 and Ps. 379,500,778, respectively.

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 2010, 2011 and 2012 are as follows:



|                             |  |      |            |  |      |     |            |      |  |    |             | 
|---------------------------- |  | ---- | ---------- |  | ---- | --- | ---------- | ---- |  | -- | ----------- | 
|                             |  | 2010 |            |  | 2011 |     |            | 2012 | 
|Combined income before taxes |  | Ps.  | 44,996,818 |  |      | Ps. | 42,011,515 |      |  | Ps | .42,628,730 | 
|Combined tax provision       |  |      | 7,402,537  |  |      |     | 13,590,923 |      |  |    | 17,923,319  | 

b) Tax losses

At December 31, 2012, the available tax loss carryforwards of the subsidiaries of América Móvil are as follows:



|            |  |                                                              |            |  |              |     |            | 
|----------- |  | ------------------------------------------------------------ | ---------- |  | ------------ | --- | ---------- | 
|Country     |  | Balance of availabletax losscarryforwards atDecember31, 2012 |            |  | Tax benefits |    
|Chile       |  | Ps.                                                          | 1,503,995  |  |              | Ps. | 257,109    | 
|Brazil      |  |                                                              | 40,632,785 |  |              |     | 13,815,147 | 
|Mexico      |  |                                                              | 9,616,008  |  |              |     | 2,884,802  | 
|Puerto Rico |  |                                                              | 2,394,162  |  |              |     | 718,249    | 
|Argentina   |  |                                                              | 846,358    |  |              |     | 279,298    | 
|Colombia    |  |                                                              | 167,651    |  |              |     | 58,678     | 
|            |  |                                                              |            |  |              |     |            | 
|Total       |  | Ps.                                                          | 55,160,959 |  |              | Ps. | 18,013,283 | 
|            |  |                                                              |            |  |              |     |            | 

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 obtain a benefit of only 17% of
the amount of the loss generated.



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The Company believes that it is more likely than not that it will recognize the benefit of unreserved net
operating loss carry-forwards in future periods, primarily through continuing operations, tax planning strategies, and other sources of taxable income.

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s management analyzes the financial and operating information by geographical segment, except for Mexico, which
shows América Móvil (Corporate and Telcel) and Telmex as two segments. All significant operating segments that represent more than 10% of consolidated revenues, more than 10% of net profits and more than 10% of consolidated assets, are
presented separately.



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|                                                      |  |           |               |  |        |  |             |        |  |  |                 |   |  |          |             |  |           |  |             |                   |  |  |            |  |  |              |            |   |              |  |            |                   |  |  |            |   |  |  |                |   |  |  |               | 
|----------------------------------------------------- |  | --------- | ------------- |  | ------ |  | ----------- | ------ |  |  | --------------- | - |  | -------- | ----------- |  | --------- |  | ----------- | ----------------- |  |  | ---------- |  |  | ------------ | ---------- | - | ------------ |  | ---------- | ----------------- |  |  | ---------- | - |  |  | -------------- | - |  |  | ------------- | 
|                                                      |  | Mexico(1) |               |  | Telmex |  |             | Brazil |  |  | SouthernCone(2) |   |  | Colombia |             |  | Andean(3) |  |             | CentralAmerica(4) |  |  | U.S.A.(5)  |  |  | Caribbean(6) |            |   | Eliminations |  |            | Consolidatedtotal | 
|At December 31, 2010                                  |  |           |               |  |        |  |             |        |  |  |                 |   |  |          |             |  |           |  |             |                   |  |  |            |  |  |              |            |   |              |  |            |                   |  |  |            |   |  |  |                |   |  |  |               | 
|Operating revenues                                    |  |           | 165,296,403   |  |        |  | 114,994,278 |        |  |  | 159,482,266     |   |  |          | 46,953,186  |  |           |  | 50,823,503  |                   |  |  | 30,700,703 |  |  |              | 17,869,434 |   |              |  | 35,693,900 |                   |  |  | 27,741,852 |   |  |  | (19,666,196)   |   |  |  | 629,889,329   | 
|Depreciation and amortization                         |  |           | 10,261,103    |  |        |  | 17,500,370  |        |  |  | 33,525,620      |   |  |          | 5,537,205   |  |           |  | 9,340,301   |                   |  |  | 3,545,006  |  |  |              | 6,243,527  |   |              |  | 343,792    |                   |  |  | 4,826,212  |   |  |  | (51,809        | ) |  |  | 91,071,327    | 
|Operating income                                      |  |           | 76,090,032    |  |        |  | 27,991,616  |        |  |  | 13,843,292      |   |  |          | 7,530,880   |  |           |  | 13,486,785  |                   |  |  | 9,076,550  |  |  |              | (194,044   | ) |              |  | 1,617,152  |                   |  |  | 3,304,015  |   |  |  | (424,869       | ) |  |  | 152,321,409   | 
|Interest income                                       |  |           | 4,275,008     |  |        |  | 583,762     |        |  |  | 2,615,814       |   |  |          | 760,644     |  |           |  | 531,526     |                   |  |  | 408,603    |  |  |              | 160,038    |   |              |  | 82,490     |                   |  |  | 215,198    |   |  |  | (4,831,544     | ) |  |  | 4,801,539     | 
|Interest expense                                      |  |           | 13,847,898    |  |        |  | 3,443,522   |        |  |  | 3,135,696       |   |  |          | 457,751     |  |           |  | 413,663     |                   |  |  | 610,604    |  |  |              | 353,040    |   |              |  |            |                   |  |  | 35,279     |   |  |  | (5,016,718     | ) |  |  | 17,280,735    | 
|Income tax                                            |  |           | 19,943,409    |  |        |  | 8,325,091   |        |  |  | (3,286,036      | ) |  |          | 3,252,464   |  |           |  | 3,313,865   |                   |  |  | 2,838,429  |  |  |              | 1,199,418  |   |              |  | 373,696    |                   |  |  | 253,283    |   |  |  |                |   |  |  | 36,213,619    | 
|Equity interest in net income of associated companies |  |           | 52,485        |  |        |  | 195,910     |        |  |  | 1,428,826       |   |  |          | 19,435      |  |           |  |             |                   |  |  |            |  |  |              |            |   |              |  |            |                   |  |  |            |   |  |  | (25,446        | ) |  |  | 1,671,210     | 
|Net profit attributable to parent                     |  |           | 44,664,283    |  |        |  | 15,121,138  |        |  |  | 14,264,111      |   |  |          | 6,443,241   |  |           |  | 7,328,991   |                   |  |  | 5,944,117  |  |  |              | (1,786,666 | ) |              |  | 1,277,269  |                   |  |  | 3,146,377  |   |  |  | (5,279,809     | ) |  |  | 91,123,052    | 
|Assets by segment                                     |  |           | 1,160,716,719 |  |        |  | 155,800,277 |        |  |  | 253,677,418     |   |  |          | 78,749,869  |  |           |  | 83,930,378  |                   |  |  | 65,392,559 |  |  |              | 45,658,743 |   |              |  | 12,560,676 |                   |  |  | 65,246,778 |   |  |  | (1,048,217,814 | ) |  |  | 873,515,603   | 
|Plant, property and equipment, net                    |  |           | 40,881,732    |  |        |  | 99,893,002  |        |  |  | 123,921,091     |   |  |          | 35,790,891  |  |           |  | 33,826,866  |                   |  |  | 18,636,393 |  |  |              | 28,788,969 |   |              |  | 718,744    |                   |  |  | 29,362,699 |   |  |  |                |   |  |  | 411,820,387   | 
|Goodwill, net                                         |  |           | 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, net                              |  |           | 6,106,148     |  |        |  | 221,010     |        |  |  | 25,374,188      |   |  |          | 1,514,653   |  |           |  | 4,018,557   |                   |  |  | 4,497,609  |  |  |              | 1,174,314  |   |              |  |            |                   |  |  | 1,614,379  |   |  |  |                |   |  |  | 44,520,858    | 
|Investment in associates                              |  |           | 48,274,722    |  |        |  | 1,392,042   |        |  |  | 44,945,736      |   |  |          | 65,727      |  |           |  | 13,130      |                   |  |  |            |  |  |              | 59,874     |   |              |  |            |                   |  |  |            |   |  |  | (44,211,776    | ) |  |  | 50,539,455    | 
|Liabilities by segments                               |  |           | 305,985,289   |  |        |  | 108,524,741 |        |  |  | 117,672,501     |   |  |          | 32,128,844  |  |           |  | 28,872,300  |                   |  |  | 23,186,120 |  |  |              | 22,172,746 |   |              |  | 11,643,324 |                   |  |  | 21,614,564 |   |  |  | (134,321,996   | ) |  |  | 537,478,433   | 
|At December 31, 2011                                  |  |           |               |  |        |  |             |        |  |  |                 |   |  |          |             |  |           |  |             |                   |  |  |            |  |  |              |            |   |              |  |            |                   |  |  |            |   |  |  |                |   |  |  |               | 
|Operating revenues                                    |  |           | 169,117,703   |  |        |  | 112,255,217 |        |  |  | 177,697,278     |   |  |          | 54,838,798  |  |           |  | 61,087,250  |                   |  |  | 35,393,881 |  |  |              | 19,564,643 |   |              |  | 47,553,690 |                   |  |  | 27,071,728 |   |  |  | (14,613,876    | ) |  |  | 689,966,312   | 
|Depreciation and amortization                         |  |           | 10,290,504    |  |        |  | 16,936,389  |        |  |  | 36,299,859      |   |  |          | 6,504,008   |  |           |  | 8,273,765   |                   |  |  | 3,986,524  |  |  |              | 6,205,962  |   |              |  | 374,877    |                   |  |  | 5,125,147  |   |  |  |                |   |  |  | 93,997,035    | 
|Operating income                                      |  |           | 76,004,224    |  |        |  | 26,582,083  |        |  |  | 9,450,925       |   |  |          | 8,607,931   |  |           |  | 19,450,851  |                   |  |  | 11,200,534 |  |  |              | (57,464    | ) |              |  | 816,558    |                   |  |  | 2,555,678  |   |  |  | 164,148        |   |  |  | 154,775,468   | 
|Interest income                                       |  |           | 8,964,516     |  |        |  | 385,768     |        |  |  | 3,745,607       |   |  |          | 2,188,569   |  |           |  | 147,966     |                   |  |  | 468,968    |  |  |              | 87,938     |   |              |  | 99,154     |                   |  |  | 207,400    |   |  |  | (9,441,986     | ) |  |  | 6,853,900     | 
|Interest expense                                      |  |           | 15,543,449    |  |        |  | 2,967,729   |        |  |  | 8,871,412       |   |  |          | 1,195,200   |  |           |  | 595,188     |                   |  |  | 419,178    |  |  |              | 233,345    |   |              |  |            |                   |  |  | 33,737     |   |  |  | (9,067,632     | ) |  |  | 20,791,606    | 
|Income tax                                            |  |           | 19,064,289    |  |        |  | 7,333,206   |        |  |  | (1,587,570      | ) |  |          | 3,758,431   |  |           |  | 6,819,446   |                   |  |  | 3,381,785  |  |  |              | 1,198,810  |   |              |  | 332,988    |                   |  |  | 119,277    |   |  |  |                |   |  |  | 40,420,662    | 
|Equity interest in net income of associated companies |  |           | 30,542        |  |        |  | 115,070     |        |  |  | 1,856,401       |   |  |          |             |  |           |  |             |                   |  |  |            |  |  |              |            |   |              |  |            |                   |  |  | (14,703    | ) |  |  | (63,313        | ) |  |  | 1,923,997     | 
|Net profit attributable to parent                     |  |           | 41,407,389    |  |        |  | 14,581,672  |        |  |  | 4,297,400       |   |  |          | 4,100,544   |  |           |  | 7,787,189   |                   |  |  | 8,316,861  |  |  |              | (911,512   | ) |              |  | 585,807    |                   |  |  | 3,270,017  |   |  |  | (581,838       | ) |  |  | 82,853,529    | 
|Assets by segment                                     |  |           | 757,046,055   |  |        |  | 163,439,508 |        |  |  | 299,733,013     |   |  |          | 106,287,173 |  |           |  | 97,225,819  |                   |  |  | 65,993,608 |  |  |              | 56,856,694 |   |              |  | 16,090,706 |                   |  |  | 66,584,465 |   |  |  | (681,624,297   | ) |  |  | 947,632,744   | 
|Plant, property and equipment, net                    |  |           | 42,244,711    |  |        |  | 98,877,234  |        |  |  | 137,394,139     |   |  |          | 49,980,417  |  |           |  | 42,260,513  |                   |  |  | 24,462,608 |  |  |              | 38,854,216 |   |              |  | 813,907    |                   |  |  | 31,199,028 |   |  |  |                |   |  |  | 466,086,773   | 
|Goodwill, net                                         |  |           | 13,401,456    |  |        |  | 103,289     |        |  |  | 691,096         |   |  |          | 2,599,802   |  |           |  | 14,882,545  |                   |  |  | 4,120,226  |  |  |              | 4,808,699  |   |              |  | 781,201    |                   |  |  | 31,650,119 |   |  |  |                |   |  |  | 73,038,433    | 
|Trademarks, net                                       |  |           | 12,347        |  |        |  |             |        |  |  | 1,355,486       |   |  |          | 373,544     |  |           |  | 466,597     |                   |  |  | 1,942      |  |  |              | 288,214    |   |              |  |            |                   |  |  | 508,724    |   |  |  |                |   |  |  | 3,006,854     | 
|Licenses and rights, net                              |  |           | 5,413,039     |  |        |  | 191,320     |        |  |  | 18,784,656      |   |  |          | 1,447,050   |  |           |  | 4,525,722   |                   |  |  | 4,794,475  |  |  |              | 1,029,922  |   |              |  |            |                   |  |  | 2,344,715  |   |  |  |                |   |  |  | 38,530,899    | 
|Investment in associates                              |  |           | 48,227,056    |  |        |  | 1,585,330   |        |  |  | 48,298,290      |   |  |          | 226,050     |  |           |  | 16,480      |                   |  |  |            |  |  |              | 76,591     |   |              |  |            |                   |  |  |            |   |  |  | (44,211,774    | ) |  |  | 54,218,023    | 
|Liabilities by segments                               |  |           | 397,083,395   |  |        |  | 114,366,987 |        |  |  | 140,279,863     |   |  |          | 61,074,258  |  |           |  | 37,562,936  |                   |  |  | 21,400,022 |  |  |              | 31,771,790 |   |              |  | 15,354,830 |                   |  |  | 24,228,460 |   |  |  | (191,129,492   | ) |  |  | 651,993,049   | 
|At December 31, 2012                                  |  |           |               |  |        |  |             |        |  |  |                 |   |  |          |             |  |           |  |             |                   |  |  |            |  |  |              |            |   |              |  |            |                   |  |  |            |   |  |  |                |   |  |  |               | 
|Operating revenues                                    |  |           | 183,216,384   |  |        |  | 106,024,574 |        |  |  | 209,786,554     |   |  |          | 62,017,811  |  |           |  | 73,432,068  |                   |  |  | 42,495,288 |  |  |              | 23,047,478 |   |              |  | 63,572,960 |                   |  |  | 27,441,444 |   |  |  | (15,964,916    | ) |  |  | 775,069,645   | 
|Depreciation and amortization                         |  |           | 9,155,640     |  |        |  | 16,758,034  |        |  |  | 39,827,700      |   |  |          | 7,182,614   |  |           |  | 10,346,090  |                   |  |  | 4,689,847  |  |  |              | 9,609,151  |   |              |  | 478,976    |                   |  |  | 5,536,792  |   |  |  | (107           | ) |  |  | 103,584,737   | 
|Operating income                                      |  |           | 82,101,272    |  |        |  | 18,754,438  |        |  |  | 11,526,154      |   |  |          | 8,071,120   |  |           |  | 22,709,742  |                   |  |  | 13,176,907 |  |  |              | (3,497,129 | ) |              |  | 1,688,063  |                   |  |  | 2,310,172  |   |  |  | 469,448        |   |  |  | 157,310,187   | 
|Interest income                                       |  |           | 2,690,719     |  |        |  | 236,106     |        |  |  | 2,717,879       |   |  |          | 18,709      |  |           |  | 13,417      |                   |  |  | 30,777     |  |  |              | 34,976     |   |              |  | 131        |                   |  |  | 33,966     |   |  |  | (80            | ) |  |  | 5,776,600     | 
|Interest expense                                      |  |           | 18,762,177    |  |        |  | 2,467,279   |        |  |  | 2,592,655       |   |  |          | 660,930     |  |           |  | 372,933     |                   |  |  | 72,206     |  |  |              | 16,942     |   |              |  | 629        |                   |  |  | 323        |   |  |  | (31,478        | ) |  |  | 24,914,596    | 
|Income tax                                            |  |           | 22,307,470    |  |        |  | 6,038,146   |        |  |  | 1,210,759       |   |  |          | 3,998,988   |  |           |  | 6,397,518   |                   |  |  | 3,708,410  |  |  |              | 1,119,312  |   |              |  | 896,607    |                   |  |  | 701,481    |   |  |  |                |   |  |  | 46,378,691    | 
|Equity interest in net income of associated companies |  |           | 770,206       |  |        |  | 116,240     |        |  |  | (4,966          | ) |  |          | 6,541       |  |           |  |             |                   |  |  |            |  |  |              | (45,635    | ) |              |  |            |                   |  |  |            |   |  |  | (81,025        | ) |  |  | 761,361       | 
|Net profit attributable to parent                     |  |           | 55,384,597    |  |        |  | 11,777,208  |        |  |  | (166,533        | ) |  |          | 2,606,370   |  |           |  | 15,151,468  |                   |  |  | 9,303,620  |  |  |              | (4,895,158 | ) |              |  | 871,722    |                   |  |  | 1,579,471  |   |  |  | (171,885       | ) |  |  | 91,440,880    | 
|Assets by segment                                     |  |           | 823,995,469   |  |        |  | 165,861,785 |        |  |  | 310,500,881     |   |  |          | 102,201,239 |  |           |  | 107,371,575 |                   |  |  | 68,433,805 |  |  |              | 50,569,456 |   |              |  | 21,164,275 |                   |  |  | 64,936,593 |   |  |  | (711,137,065   | ) |  |  | 1,003,898,013 | 
|Plant, property and equipment, net                    |  |           | 45,084,232    |  |        |  | 103,336,105 |        |  |  | 163,154,248     |   |  |          | 53,108,253  |  |           |  | 45,200,786  |                   |  |  | 25,791,457 |  |  |              | 35,176,900 |   |              |  | 1,592,274  |                   |  |  | 27,990,017 |   |  |  |                |   |  |  | 500,434,272   | 
|Goodwill, net                                         |  |           | 9,468,188     |  |        |  | 103,823     |        |  |  | 29,435,809      |   |  |          | 2,112,690   |  |           |  | 15,642,979  |                   |  |  | 5,082,613  |  |  |              | 4,740,253  |   |              |  | 1,469,387  |                   |  |  | 31,650,117 |   |  |  |                |   |  |  | 99,705,859    | 
|Trademarks, net                                       |  |           | 11,882        |  |        |  |             |        |  |  | 736,803         |   |  |          | 53,193      |  |           |  |             |                   |  |  | 1,596      |  |  |              | 134,009    |   |              |  |            |                   |  |  | 205,832    |   |  |  |                |   |  |  | 1,143,315     | 
|Licenses and rights, net                              |  |           | 4,693,796     |  |        |  | 161,629     |        |  |  | 25,512,676      |   |  |          | 1,331,605   |  |           |  | 3,220,881   |                   |  |  | 4,300,618  |  |  |              | 2,650,808  |   |              |  |            |                   |  |  | 2,180,417  |   |  |  |                |   |  |  | 44,052,430    | 
|Investment in associates                              |  |           | 82,966,158    |  |        |  | 1,523,525   |        |  |  | 681             |   |  |          | 205,525     |  |           |  | 18,816      |                   |  |  |            |  |  |              | 16,782     |   |              |  |            |                   |  |  |            |   |  |  | (11,615,202    | ) |  |  | 73,116,285    | 
|Liabilities by segments                               |  |           | 492,791,925   |  |        |  | 117,353,138 |        |  |  | 165,982,722     |   |  |          | 63,320,536  |  |           |  | 38,459,314  |                   |  |  | 20,608,834 |  |  |              | 26,307,510 |   |              |  | 19,224,543 |                   |  |  | 21,807,434 |   |  |  | (274,281,320   | ) |  |  | 691,574,636   | 



|(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, Nicaragua and Panama.
|--- | --------------------------------------------------------------------------------

|(5) | Excludes Puerto Rico
|--- | --------------------

|(6) | Caribbean includes the Dominican Republic, Puerto Rico and Jamaica
|--- | ------------------------------------------------------------------



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##### Table of Contents

22. Components of other comprehensive income

An analysis of the components of the other comprehensive income as of December 31, 2010, 2011 and 2012 is as follows:



|                                                                         |  |      |                |   |      |  |                |      |  |  |                 |  
|------------------------------------------------------------------------ |  | ---- | -------------- | - | ---- |  | -------------- | ---- |  |  | --------------- | -
|                                                                         |  | 2010 |                |   | 2011 |  |                | 2012 | 
|Valuation of the derivative financial instruments, net of deferred taxes |  |      | Ps.  (401,357) |   |      |  | Ps.  (276,748) |      |  |  | Ps.  (253,428)  |  
|Translation effect of foreign subsidiaries, net of deferred tax          |  |      | (7,928,786     | ) |      |  | 10,358,985     |      |  |  | (32,651,656     | )
|Non-controlling interest of the items above                              |  |      | 498,749        |   |      |  | 61,772         |      |  |  | (509,747        | )
|                                                                         |  |      |                |   |      |  |                |      |  |  |                 |  
|Other comprehensive income (loss)                                        |  |      | Ps.(7,831,394) |   |      |  | Ps.10,144,009  |      |  |  | Ps.(33,414,831) |  
|                                                                         |  |      |                |   |      |  |                |      |  |  |                 |  

23. Subsequent Events



| | A. | In November 2012, AMX established a new program to issue peso-denominated notes that can be distributed and traded on a seamless basis in Mexico and internationally.
The notes are registered with both the U.S. Securities and Exchange Commission and the Mexican Banking and Securities Commission. AMX sold Ps. 15 billion of notes under the program in November 2012 and a further Ps.15 billion in March 2013. The
Company intends to use the program to raise a total of Ps.100 billion over five years to increase the share of Mexican pesos in its overall funding.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | B. | On January 21, 2012, the Company entered into an agreement with Corporación Interamericana de Entretenimiento, S.A.B. de C.V. (CIE), to acquire
100% of the shares of Corporación de Medios Integrales, S.A. de C.V. (CMI). CMI holds the media and advertising business within the commercial segment at CIE. The completion of the transaction is subject to certain approvals and
is expected to occur during the second quarter of 2013.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | C. | KPN has announced that it is planning to conduct a rights issue in an amount up to 3 billion, and the Company has committed to participate in proportion to its
current investment.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The Company has agreed to participate in the rights issue and subscribe for newly issued
ordinary shares in KPN pro rata to its current participation in the total share capital of KPN.



| | D. | On March 19, 2013, AMX announced that in its Board of Directors meeting, the Board decided to submit to the Ordinary General Shareholders Meeting to be held
on or before April 30, 2013, a proposal to:
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (i) | make a payment of a cash dividend from the consolidated net profit tax account (cuenta de utilidad fiscal neta consolidada), of Ps. 0.22 (twenty two peso cents),
payable in two installments, to each of the shares of its capital stock series AA, A and L outstanding as of the date of the dividend payment, subject to adjustments arising from other corporate events (including
repurchase or placement of its own shares), that may vary the number of shares outstanding as of the date of said dividend payment; and
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (ii) | (ii) to increase by Ps. 40.0 billion, the outstanding amount to repurchase shares in accordance with Article 56 of the Securities Market Law (Ley del Mercado de
Valores).
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | E. | On March 21, 2013, AMX announced that the International Olympic Committee (IOC), has awarded it the right to broadcast the XXII Olympic Winter Games in
Sochi, Russia in 2014 and the Games of the XXXI Olympiad in Rio de Janeiro, Brazil in 2016. AMX has acquired broadcast rights on all media platforms across Latin America.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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24. Supplemental Guarantor Information

As mentioned in Note 16, the Company has issued senior notes in the United States. Certain notes are fully and unconditionally guaranteed by Telcel.

Consolidating Condensed Financial Information

The following consolidating information presents condensed consolidating balance sheets as of December 31, 2011 and 2012 and condensed consolidating statements of income and cash flows for each of
the three years in the period ended December 31, 2012 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.



F-73



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##### Table of Contents

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 |  |  | Consolidated Total |                 
|                                                        |  | As of December 31, 2011 |             |  |                                 |     |             |                                   | 
|Assets:                                                 |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Cash and cash equivalents                               |  | Ps.                     | 29,197,958  |  |                                 | Ps. | 2,012,334   |                                   |  | Ps. | 27,913,704   |  |  |                    |                  |   |  | Ps. | 59,123,996  | 
|Accounts receivable, net                                |  |                         | 14,813,792  |  |                                 |     | 10,824,959  |                                   |  |     | 109,128,438  |  |  |                    |                  |   |  |     | 134,767,189 | 
|Related parties                                         |  |                         | 43,587,586  |  |                                 |     | 42,450,553  |                                   |  |     | 127,340,889  |  |  |                    | Ps.(209,965,129) |   |  |     | 3,413,899   | 
|Inventories, net                                        |  |                         | 776,540     |  |                                 |     | 14,789,027  |                                   |  |     | 18,612,019   |  |  |                    | (36,269          | ) |  |     | 34,141,317  | 
|Other current assets                                    |  |                         |             |  |                                 |     | 568,473     |                                   |  |     | 10,278,276   |  |  |                    |                  |   |  |     | 10,846,749  | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|                                                        |  |                         | 88,375,876  |  |                                 |     | 70,645,346  |                                   |  |     | 293,273,326  |  |  |                    | (210,001,398)    |   |  |     | 242,293,150 | 
|Plant, property and equipment, net                      |  |                         | 13,361,842  |  |                                 |     | 15,067,840  |                                   |  |     | 437,657,091  |  |  |                    |                  |   |  |     | 466,086,773 | 
|Investments in associated companies and others          |  |                         | 579,314,439 |  |                                 |     | 118,109,790 |                                   |  |     | 85,084,029   |  |  |                    | (728,290,235     | ) |  |     | 54,218,023  | 
|Intangible assets and other non-current assets, net     |  |                         | 1,882,874   |  |                                 |     | 7,567,118   |                                   |  |     | 175,584,806  |  |  |                    |                  |   |  |     | 185,034,798 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Total assets                                            |  | Ps.                     | 682,935,031 |  |                                 | Ps. | 211,390,094 |                                   |  | Ps. | 991,599,252  |  |  | Ps.                | (938,291,633)    |   |  | Ps. | 947,632,744 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Liabilities:                                            |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Short-term debt and current portion of long-term debt   |  | Ps.                     | 1,197,237   |  |                                 |     |             |                                   |  | Ps. | 25,548,746   |  |  | Ps.                | (102,668)        |   |  | Ps. | 26,643,315  | 
|Current liabilities                                     |  |                         | 108,076,405 |  |                                 | Ps. | 180,543,972 |                                   |  |     | 158,557,758  |  |  |                    | (209,047,136     | ) |  |     | 238,130,999 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|                                                        |  |                         | 109,273,642 |  |                                 |     | 180,543,972 |                                   |  |     | 184,106,504  |  |  |                    | (209,149,804     | ) |  |     | 264,774,314 | 
|Long-term debt                                          |  |                         | 287,514,674 |  |                                 |     |             |                                   |  |     | 66,460,813   |  |  |                    |                  |   |  |     | 353,975,487 | 
|Other non-current liabilities                           |  |                         | 506,527     |  |                                 |     | 16,385      |                                   |  |     | 33,571,931   |  |  |                    | (851,595         | ) |  |     | 33,243,248  | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Total liabilities                                       |  |                         | 397,294,843 |  |                                 |     | 180,560,357 |                                   |  |     | 284,139,248  |  |  |                    | (210,001,399     | ) |  |     | 651,993,049 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Equity attributable to equity holders of parent company |  |                         | 285,640,188 |  |                                 |     | 30,829,737  |                                   |  |     | 643,257,563  |  |  |                    | (674,087,304     | ) |  |     | 285,640,184 | 
|Non-controlling interest                                |  |                         |             |  |                                 |     |             |                                   |  |     | 64,202,441   |  |  |                    | (54,202,930      | ) |  |     | 9,999,511   | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Total equity                                            |  |                         | 285,640,188 |  |                                 |     | 30,829,737  |                                   |  |     | 707,460,004  |  |  |                    | (728,290,234     | ) |  |     | 295,639,695 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 
|Total liabilities and equity                            |  | Ps.                     | 682,935,031 |  |                                 | Ps. | 211,390,094 |                                   |  | Ps. | 991,599,252  |  |  | Ps.                | (938,291,633)    |   |  | Ps. | 947,632,744 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |              |  |  |                    |                  |   |  |     |             | 



F-74



---

##### Table of Contents

|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|------------------------------------------------------- |  | ----------------------- | ----------- |  | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------- |  |  | ----------------- | ---------------------- | - |  | --- | ------------- | 
|                                                        |  | Parent                  |             |  | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations  |  |  | ConsolidatedTotal |                       
|                                                        |  | As of December 31, 2012 |             |  |                                 |     |             |                                   | 
|Assets:                                                 |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Cash and cash equivalents                               |  | Ps.                     | 27,269,924  |  |                                 | Ps. | 1,325,939   |                                   |  | Ps. | 16,891,337    |  |  |                   |                        |   |  | Ps. | 45,487,200    | 
|Accounts receivable, net                                |  |                         | 75,389,317  |  |                                 |     | 12,096,177  |                                   |  |     | 35,500,209    |  |  |                   |                        |   |  |     | 122,985,703   | 
|Related parties                                         |  |                         | 138,169,930 |  |                                 |     | 27,703,098  |                                   |  |     | 192,498,010   |  |  |                   | Ps.   (357,681,985)    |   |  |     | 689,053       | 
|Inventories, net                                        |  |                         | 553,334     |  |                                 |     | 11,116,645  |                                   |  |     | 17,057,888    |  |  |                   | (30,047                | ) |  |     | 28,697,820    | 
|Other current assets                                    |  |                         |             |  |                                 |     | 703,717     |                                   |  |     | 10,567,746    |  |  |                   |                        |   |  |     | 11,271,463    | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|                                                        |  |                         | 241,382,505 |  |                                 |     | 52,945,576  |                                   |  |     | 272,515,190   |  |  |                   | (357,712,032           | ) |  |     | 209,131,239   | 
|Plant, property and equipment, net                      |  |                         | 11,154,013  |  |                                 |     | 21,379,116  |                                   |  |     | 467,901,143   |  |  |                   |                        |   |  |     | 500,434,272   | 
|Investments in associated companies and others          |  |                         | 569,723,183 |  |                                 |     | 112,103,513 |                                   |  |     | 91,822,348    |  |  |                   | (700,532,759           | ) |  |     | 73,116,285    | 
|Intangible assets and other non-current assets, net     |  |                         | 1,770,730   |  |                                 |     | 10,642,576  |                                   |  |     | 208,802,911   |  |  |                   |                        |   |  |     | 221,216,217   | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Total assets                                            |  | Ps.                     | 824,030,431 |  |                                 | Ps. | 197,070,781 |                                   |  | Ps. | 1,041,041,592 |  |  |                   | Ps.(1,058,244,791)     |   |  | Ps. | 1,003,898,013 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Liabilities:                                            |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Short-term debt and current portion of long-term debt   |  | Ps.                     | 6,165,849   |  |                                 |     |             |                                   |  | Ps. | 7,921,521     |  |  |                   | Ps.          (465,564) |   |  | Ps. | 13,621,806    | 
|Current liabilities                                     |  |                         | 159,964,142 |  |                                 | Ps. | 178,378,331 |                                   |  |     | 254,285,245   |  |  |                   | (353,390,847           | ) |  |     | 239,236,871   | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|                                                        |  |                         | 166,129,991 |  |                                 |     | 178,378,331 |                                   |  |     | 262,206,766   |  |  |                   | (353,856,411           | ) |  |     | 252,858,677   | 
|Long-term debt                                          |  |                         | 355,666,397 |  |                                 |     |             |                                   |  |     | 48,381,885    |  |  |                   |                        |   |  |     | 404,048,282   | 
|Other non-current liabilities                           |  |                         | 436,230     |  |                                 |     | 16,435      |                                   |  |     | 38,070,634    |  |  |                   | (3,855,622             | ) |  |     | 34,667,677    | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Total liabilities                                       |  |                         | 522,232,618 |  |                                 |     | 178,394,766 |                                   |  |     | 348,659,285   |  |  |                   | (357,712,033)          |   |  |     | 691,574,636   | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Equity attributable to equity holders of parent company |  |                         | 301,797,813 |  |                                 |     | 18,676,015  |                                   |  |     | 662,856,893   |  |  |                   | (681,532,906           | ) |  |     | 301,797,815   | 
|Non-controlling interest                                |  |                         |             |  |                                 |     |             |                                   |  |     | 29,525,414    |  |  |                   | (18,999,852            | ) |  |     | 10,525,562    | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Total equity                                            |  |                         | 301,797,813 |  |                                 |     | 18,676,015  |                                   |  |     | 692,382,307   |  |  |                   | (700,532,758)          |   |  |     | 312,323,377   | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 
|Total liabilities and equity                            |  | Ps.                     | 824,030,431 |  |                                 | Ps. | 197,070,781 |                                   |  | Ps. | 1,041,041,592 |  |  |                   | (1,058,244,791)        |   |  | Ps. | 1,003,898,013 | 
|                                                        |  |                         |             |  |                                 |     |             |                                   |  |     |               |  |  |                   |                        |   |  |     |               | 



F-75



---

##### Table of Contents

|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|---------------------------------------------------------- |  | ------------------------------------ | ----------- | - | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ------------- | - |  | --- | ----------- | -
|                                                           |  | Parent                               |             |   | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |              
|Condensed consolidating statements of income:              | 
|                                                           |  | For the year ended December 31, 2010 |             |   |                                 |     |             |                                   | 
|                                                           |  |                                      |             |   |                                
|Total revenues                                             |  | Ps.                                  | 3,745,818   |   |                                 | Ps. | 115,232,667 |                                   |  | Ps. | 611,355,753  |   |  | Ps.               | (100,444,909) |   |  | Ps. | 629,889,329 |  
|Total cost and operating expenses                          |  |                                      | 1,336,270   |   |                                 |     | 113,956,646 |                                   |  |     | 462,709,241  |   |  |                   | ( 100,434,237 | ) |  |     | 477,567,920 |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Operating (loss) income                                    |  |                                      | 2,409,548   |   |                                 |     | 1,276,021   |                                   |  |     | 148,646,512  |   |  |                   | ( 10,672      | ) |  |     | 152,321,409 |  
|Interest (expense) income, net                             |  |                                      | (11,138,004 | ) |                                 |     | (3,164,235  | )                                 |  |     | 1,825,243    |   |  |                   | ( 2,200       | ) |  |     | (12,479,196 | )
|Exchange (loss) 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 companies      |  |                                      | 96,706,527  |   |                                 |     | 3,412,786   |                                   |  |     | 498,647      |   |  |                   | ( 98,946,750  | ) |  |     | 1,671,210   |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Net profit (loss) for year                                 |  | Ps.                                  | 91,123,052  |   |                                 |     | Ps.498,647  |                                   |  | Ps. | 106,243,346  |   |  | Ps.               | (98,959,622)  |   |  | Ps. | 98,905,423  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Distribution of the net profit (loss) to:                  |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Equity owners of holding company                           |  | Ps.                                  | 91,123,052  |   |                                 | Ps. | 498,647     |                                   |  | Ps. | 97,951,398   |   |  | Ps.               | (98,450,045)  |   |  | Ps. | 91,123,052  |  
|Non-controlling interest                                   |  |                                      |             |   |                                 |     |             |                                   |  |     | 8,291,948    |   |  |                   | ( 509,577     | ) |  |     | 7,782,371   |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Net profit (loss)                                          |  | Ps.                                  | 91,123,052  |   |                                 | Ps. | 498,647     |                                   |  | Ps. | 106,243,346  |   |  | Ps.               | (98,959,622)  |   |  | Ps. | 98,905,423  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Other comprehensive income items:                          |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Effect of translation of foreign entities                  |  | Ps.                                  | (7,928,786) |   |                                 | Ps. | 500,693     |                                   |  | Ps. | (7,924,918)  |   |  | Ps.               | 8,197,303     |   |  | Ps. | (7,155,708) |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Effect of fair value of derivatives, net of deferred taxes |  |                                      | (401,357    | ) |                                 |     |             |                                   |  |     | (401,357     | ) |  |                   | 127,028       |   |  |     | (675,686    | )
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Total other comprehensive income items for the period      |  |                                      | (8,330,143  | ) |                                 |     | 500,693     |                                   |  |     | (8,326,275   | ) |  |                   | 8,324,331     |   |  |     | (7,831,394  | )
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Total comprehensive income for the period                  |  | Ps.                                  | 82,792,909  |   |                                 | Ps. | 999,340     |                                   |  | Ps. | 97,917,071   |   |  | Ps.               | (90,635,291)  |   |  | Ps. | 91,074,029  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Comprehensive income for the period attributable to:       |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Equity holders of the parent                               |  | Ps.                                  | 82,792,909  |   |                                 | Ps. | 999,340     |                                   |  | Ps. | 89,635,951   |   |  | Ps.               | (90,635,291)  |   |  | Ps. | 82,792,909  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Non-controlling interests                                  |  |                                      |             |   |                                 |     |             |                                   |  |     | 8,281,120    |   |  |                   |               |   |  |     | 8,281,120   |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|                                                           |  | Ps.                                  | 82,792,909  |   |                                 | Ps. | 999,340     |                                   |  | Ps. | 97,917,071   |   |  | Ps.               | (90,635,291)  |   |  | Ps. | 91,074,029  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  



F-76



---

##### Table of Contents

|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|---------------------------------------------------------- |  | ------------------------------------ | ----------- | - | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ------------- | - |  | --- | ----------- | -
|                                                           |  | Parent                               |             |   | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |              
|Condensed consolidating statements of income:              | 
|                                                           |  | For the year ended December 31, 2011 |             |   |                                 |     |             |                                   | 
|                                                           |  |                                      |             |   |                                
|Total revenues                                             |  | Ps.                                  | 102,598,076 |   |                                 | Ps. | 127,108,045 |                                   |  | Ps. | 590,431,027  |   |  | Ps.               | (130,170,836) |   |  | Ps. | 689,966,312 |  
|Total cost and operating expenses                          |  |                                      | 57,092,568  |   |                                 |     | 116,587,293 |                                   |  |     | 491,094,000  |   |  |                   | ( 129,583,017 | ) |  |     | 535,190,844 |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Operating (loss) income                                    |  |                                      | 45,505,508  |   |                                 |     | 10,520,752  |                                   |  |     | 99,337,027   |   |  |                   | ( 587,819     | ) |  |     | 154,775,468 |  
|Interest (expense) income, net                             |  |                                      | (6,537,358  | ) |                                 |     | (9,675,128  | )                                 |  |     | 2,278,785    |   |  |                   | ( 4,005       | ) |  |     | (13,937,706 | )
|Exchange (loss) gain, net                                  |  |                                      | (19,497,182 | ) |                                 |     | (646,502    | )                                 |  |     | (2,251,032   | ) |  |                   |               |   |  |     | (22,394,716 | )
|Other financing cost, net                                  |  |                                      | 2,433,267   |   |                                 |     |             |                                   |  |     | 5,773,049    |   |  |                   | ( 28,531      | ) |  |     | 8,177,785   |  
|Taxes on profits                                           |  |                                      | (9,316,862  | ) |                                 |     | (1,223,610  | )                                 |  |     | (29,880,190  | ) |  |                   |               |   |  |     | (40,420,662 | )
|Equity interest in net income of
associated companies      |  |                                      | 70,266,156  |   |                                 |     | 1,350,663   |                                   |  |     | 326,175      |   |  |                   | ( 70,018,997  | ) |  |     | 1,923,997   |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Net profit (loss) for year                                 |  | Ps.                                  | 82,853,529  |   |                                 | Ps. | 326,175     |                                   |  | Ps. | 75,583,814   |   |  | Ps.               | (70,639,352)  |   |  | Ps. | 88,124,166  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Distribution of the net profit
(loss) to:                  |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Equity owners of holding company                           |  | Ps.                                  | 82,853,529  |   |                                 | Ps. | 326,175     |                                   |  | Ps. | 67,927,923   |   |  | Ps.               | (68,254,098)  |   |  | Ps. | 82,853,529  |  
|Non-controlling interest                                   |  |                                      |             |   |                                 |     |             |                                   |  |     | (7,655,891   | ) |  |                   | 2,385,254     |   |  |     | (5,270,637  | )
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Net profit (loss)                                          |  | Ps.                                  | 82,853,529  |   |                                 | Ps. | 326,175     |                                   |  | Ps. | 75,583,814   |   |  | Ps.               | (70,639,352)  |   |  | Ps. | 88,124,166  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Other comprehensive income items:                          |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Effect of translation of foreign entities                  |  | Ps.                                  | 10,358,985  |   |                                 | Ps. | 2,235,365   |                                   |  | Ps. | 10,353,947   |   |  | Ps.               | (12,486,690)  |   |  | Ps. | 10,461,607  |  
|Effect of fair value of derivatives, net of deferred taxes |  |                                      | (276,748    | ) |                                 |     |             |                                   |  |     | (190,559     | ) |  |                   | 149,709       |   |  |     | (317,598    | )
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Total other comprehensive income items for the period      |  |                                      | 10,082,237  |   |                                 |     | 2,235,365   |                                   |  |     | 10,163,388   |   |  |                   | ( 12,336,981  | ) |  |     | 10,144,009  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Total comprehensive income for the period                  |  | Ps.                                  | 92,935,766  |   |                                 | Ps. | 2,561,540   |                                   |  | Ps. | 85,747,202   |   |  | Ps.               | (82,976,333)  |   |  | Ps. | 98,268,175  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Comprehensive income for the period attributable to:       |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Equity holders of the parent                               |  | Ps.                                  | 92,935,766  |   |                                 | Ps. | 2,561,540   |                                   |  | Ps. | 80,414,793   |   |  | Ps.               | (82,976,333)  |   |  | Ps. | 92,935,766  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|Non-controlling interests                                  |  |                                      |             |   |                                 |     |             |                                   |  |     | 5,332,409    |   |  |                   |               |   |  |     | 5,332,409   |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  
|                                                           |  | Ps.                                  | 92,935,766  |   |                                 | Ps. | 2,561,540   |                                   |  | Ps. | 85,747,202   |   |  | Ps.               | (82,976,333)  |   |  | Ps, | 98,268,175  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |               |   |  |     |             |  



F-77



---

##### Table of Contents

|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|---------------------------------------------------------- |  | ------------------------------------ | ----------- | - | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ------------ | - |  | --- | ----------- | -
|                                                           |  | Parent                               |             |   | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |             
|Condensed consolidating statements of income:              | 
|                                                           |  | For the year ended December 31, 2012 |             |   |                                 |     |             |                                   | 
|                                                           |  |                                      |             |   |                                
|Total revenues                                             |  | Ps.                                  | 158,576,797 |   |                                 | Ps. | 136,378,076 |                                   |  | Ps. | 618,561,116  |   |  | Ps.               | (138,446,344 | ) |  | Ps. | 775,069,645 |  
|Total cost and operating expenses                          |  |                                      | 87,525,232  |   |                                 |     | 131,836,240 |                                   |  |     | 536,580,453  |   |  |                   | (138,182,467 | ) |  |     | 617,759,458 |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Operating (loss) income                                    |  |                                      | 71,051,565  |   |                                 |     | 4,541,836   |                                   |  |     | 81,980,663   |   |  |                   | (263,877     | ) |  |     | 157,310,187 |  
|Interest (expense) income, net                             |  |                                      | (15,945,879 | ) |                                 |     | (10,030,650 | )                                 |  |     | 6,836,011    |   |  |                   | 2,522        |   |  |     | (19,137,996 | )
|Exchange (loss) gain, net                                  |  |                                      | 14,182,855  |   |                                 |     | 1,640,474   |                                   |  |     | (8,428,175   | ) |  |                   |              |   |  |     | 7,395,154   |  
|Other financing cost, net                                  |  |                                      | (919,171    | ) |                                 |     |             |                                   |  |     | (6,894,985   | ) |  |                   | 3,818        |   |  |     | (7,810,338  | )
|Taxes on profits                                           |  |                                      | 16,473,632  |   |                                 |     | 442,558     |                                   |  |     | 29,462,501   |   |  |                   |              |   |  |     | 46,378,691  |  
|Equity interest in net income of associated companies      |  |                                      | 39,545,142  |   |                                 |     | 879,423     |                                   |  |     | (3,411,474   | ) |  |                   | (36,251,730  | ) |  |     | 761,361     |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Net profit (loss) for year                                 |  | Ps.                                  | 91,440,880  |   |                                 | Ps. | (3,411,475  | )                                 |  | Ps. | 40,619,539   |   |  | Ps.               | (36,509,267  | ) |  | Ps. | 92,139,677  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Distribution of the net profit (loss) to:                  |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Equity owners of holding company                           |  | Ps.                                  | 91,440,880  |   |                                 | Ps. | (3,411,475  | )                                 |  | Ps. | 35,490,074   |   |  | Ps.               | (32,078,599  | ) |  | Ps. | 91,440,880  |  
|Non-controlling interest                                   |  |                                      |             |   |                                 |     |             |                                   |  |     | 5,129,465    |   |  |                   | (4,430,668   | ) |  |     | 698,797     |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Net profit (loss)                                          |  | Ps.                                  | 91,440,880  |   |                                 | Ps. | (3,411,475  | )                                 |  | Ps. | 40,619,539   |   |  | Ps.               | (36,509,267  | ) |  | Ps. | 92,139,677  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Other comprehensive income items:                          |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Effect of translation of foreign entities                  |  | Ps.                                  | (32,651,656 | ) |                                 | Ps. | (4,822,249  | )                                 |  | Ps. | (32,515,650  | ) |  | Ps.               | 36,813,888   |   |  | Ps. | (33,175,667 | )
|Effect of fair value of derivatives, net of deferred taxes |  |                                      | (253,428    | ) |                                 |     |             |                                   |  |     | (435,458     | ) |  |                   | 449,722      |   |  |     | (239,164    | )
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Total other comprehensive income items for the period      |  |                                      | (32,905,084 | ) |                                 |     | (4,822,249  | )                                 |  |     | (32,951,108  | ) |  |                   | 37,263,610   |   |  |     | (33,414,831 | )
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Total comprehensive income for the period                  |  | Ps.                                  | 58,535,796  |   |                                 | Ps. | (8,233,724  | )                                 |  | Ps. | 7,668,431    |   |  | Ps.               | 754,343      |   |  | Ps. | 58,724,846  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|                                                           |  |                                      |             |   |                                
|Comprehensive income for the period attributable to:       |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Equity holders of the parent                               |  | Ps.                                  | 58,535,796  |   |                                 | Ps. | (8,233,724  | )                                 |  | Ps. | 7,479,381    |   |  | Ps.               | 754,343      |   |  | Ps. | 58,535,796  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|Non-controlling interests                                  |  |                                      |             |   |                                 |     |             |                                   |  |     | 189,050      |   |  |                   |              |   |  |     | 189,050     |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  
|                                                           |  | Ps.                                  | 58,535,796  |   |                                 | Ps. | (8,233,724  | )                                 |  | Ps. | 7,668,431    |   |  | Ps.               | 754,343      |   |  | Ps. | 58,724,846  |  
|                                                           |  |                                      |             |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |             |  



F-78



---

##### 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:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                          |  |                                      |              |   |                                
|Profit 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  |                                   |  |     | (14,109,221  | ) |  |                   | 12,872       |   |  |     | (46,145,540  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows (used in) provided
by operating activities |  |                                      | (82,088,955  | ) |                                 |     | 48,107,301  |                                   |  |     | 234,739,628  |   |  |                   |              |   |  |     | 200,757,974  |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|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 asset 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  | )
|Financial Instruments                                     |  |                                      |              |   |                                 |     |             |                                   |  |     | 826,850      |   |  |                   |              |   |  |     | 826,850      |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows (used in) provided by financing activities |  |                                      | 80,806,775   |   |                                 |     | (45,573,830 | )                                 |  |     | (160,881,137 | ) |  |                   | 73,696,749   |   |  |     | (51,951,443  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|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-79



---

##### Table of Contents

|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|--------------------------------------------------------- |  | ------------------------------------ | ------------ | - | ------------------------------- | --- | ---------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ------------ | - |  | --- | ------------ | -
|                                                          |  | Parent                               |              |   | Wholly-ownedGuarantorSubsidiary |     |            | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |             
|                                                          |  | For the year ended December 31, 2011 |              |   |                                 |     |            |                                   | 
|Operating activities:                                     |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|                                                          |  |                                      |              |   |                                
|Profit before taxes                                       |  | Ps.                                  | 91,938,656   |   |                                 | Ps. | 1,549,784  |                                   |  | Ps. | 105,464,007  |   |  | Ps.               | (70,407,619  | ) |  | Ps. | 128,544,828  |  
|Non-cash items                                            |  |                                      | (57,862,808  | ) |                                 |     | 13,623,630 |                                   |  |     | 113,896,923  |   |  |                   | 69,791,121   |   |  |     | 139,448,866  |  
|Changes in working capital:                               |  |                                      | 67,986,792   |   |                                 |     | 1,647,322  |                                   |  |     | (145,007,404 | ) |  |                   | 620,355      |   |  |     | (74,752,935  | )
|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows (used in) provided by operating activities |  |                                      | 102,062,640  |   |                                 |     | 16,820,736 |                                   |  |     | 74,353,526   |   |  |                   | 3,857        |   |  |     | 193,240,759  |  
|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Investing activities:                                     |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Acquisition of plant, property and equipment              |  |                                      | (3,561,842   | ) |                                 |     | (5,360,109 | )                                 |  |     | (111,271,237 | ) |  |                   |              |   |  |     | (120,193,188 | )
|Acquisition of licenses                                   |  |                                      |              |   |                                 |     |            |                                   |  |     | (993,692     | ) |  |                   |              |   |  |     | (993,692     | )
|Dividends received                                        |  |                                      | 80,074,790   |   |                                 |     |            |                                   |  |     | 1,379,999    |   |  |                   | (81,454,789  | ) |  |     |              |  
|Acquisition of non-controlling interest                   |  |                                      | (123,626,353 | ) |                                 |     | (991,358   | )                                 |  |     | (1,279,701   | ) |  |                   | 123,626,353  |   |  |     | (2,271,059   | )
|Fixed asset sales                                         |  |                                      |              |   |                                 |     |            |                                   |  |     | 38,312       |   |  |                   |              |   |  |     | 38,312       |  
|Net cash flows provided by (used in) investing activities |  |                                      | (47,113,405  | ) |                                 |     | (6,351,467 | )                                 |  |     | (112,126,319 | ) |  |                   | 42,171,564   |   |  |     | (123,419,627 | )
|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Financing activities:                                     |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Bank loans, net                                           |  |                                      | 61,811,634   |   |                                 |     |            |                                   |  |     | (15,803,025  | ) |  |                   |              |   |  |     | 46,008,609   |  
|Acquisition of permanent investments                      |  |                                      | (64,458,586  | ) |                                 |     |            |                                   |  |     | (3,005,784   | ) |  |                   |              |   |  |     | (67,464,370  | )
|Interest paid                                             |  |                                      | (9,487,535   | ) |                                 |     | (7,955,780 | )                                 |  |     | (623,978     | ) |  |                   |              |   |  |     | (18,067,293  | )
|Paid-In capital                                           |  |                                      |              |   |                                 |     |            |                                   |  |     | 123,626,353  |   |  |                   | (123,626,353 | ) |  |     |              |  
|Repurchase and others                                     |  |                                      | (52,368,010  | ) |                                 |     |            |                                   |  |     | (1,358,774   | ) |  |                   |              |   |  |     | (53,726,784  | )
|Payment of dividends                                      |  |                                      | (13,807,550  | ) |                                 |     | (1,379,999 | )                                 |  |     | (83,306,363  | ) |  |                   | 81,450,932   |   |  |     | (17,042,980  | )
|Financial instruments                                     |  |                                      |              |   |                                 |     |            |                                   |  |     | 3,158,678    |   |  |                   |              |   |  |     | 3,158,678    |  
|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net cash flows (used in) provided by financing activities |  |                                      | (78,310,047  | ) |                                 |     | (9,335,779 | )                                 |  |     | 22,687,107   |   |  |                   | (42,175,421  | ) |  |     | (107,134,140 | )
|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Net (decrease) increase in cash and cash equivalents      |  |                                      | (23,360,812  | ) |                                 |     | 1,133,490  |                                   |  |     | (15,085,686  | ) |  |                   |              |   |  |     | (37,313,008  | )
|Adjustment to cash flow for exchange rate differences     |  |                                      |              |   |                                 |     |            |                                   |  |     | 498,539      |   |  |                   |              |   |  |     | 498,539      |  
|Cash and cash equivalents at beginning of the period      |  |                                      | 52,558,770   |   |                                 |     | 878,844    |                                   |  |     | 42,500,851   |   |  |                   |              |   |  |     | 95,938,465   |  
|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  
|Cash and cash equivalents at end of the period            |  | Ps.                                  | 29,197,958   |   |                                 | Ps. | 2,012,334  |                                   |  | Ps. | 27,913,704   |   |  |                   |              |   |  | Ps. | 59,123,996   |  
|                                                          |  |                                      |              |   |                                 |     |            |                                   |  |     |              |   |  |                   |              |   |  |     |              |  



F-80



---

##### Table of Contents

Condensed Consolidating Statements of Cash Flows:



|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|--------------------------------------------------------- |  | ------------------------------------ | ------------ | - | ------------------------------- | --- | ----------- | --------------------------------- |  | --- | ------------ | - |  | ----------------- | ----------- | - |  | --- | ------------ | -
|                                                          |  | Parent                               |              |   | Wholly-ownedGuarantorSubsidiary |     |             | Combinednon-guarantorSubsidiaries |  |     | Eliminations |   |  | ConsolidatedTotal |            
|                                                          |  | For the year ended December 31, 2012 |              |   |                                 |     |             |                                   | 
|Operating activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|                                                          |  |                                      |              |   |                                
|Profit before taxes                                       |  | Ps.                                  | 107,914,511  |   |                                 | Ps. | (2,968,915  | )                                 |  | Ps. | 70,082,039   |   |  | Ps.               | (36,509,267 | ) |  | Ps. | 138,518,368  |  
|Non-cash items                                            |  |                                      | (18,152,646  | ) |                                 |     | 13,469,502  |                                   |  |     | 92,470,548   |   |  |                   | 36,255,587  |   |  |     | 124,042,991  |  
|Changes in working capital:                               |  |                                      | (142,895,497 | ) |                                 |     | 9,638,378   |                                   |  |     | 77,060,843   |   |  |                   | 239,272     |   |  |     | (55,957,004  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Net cash flows (used in) provided by operating activities |  |                                      | (53,133,632  | ) |                                 |     | 20,138,965  |                                   |  |     | 239,613,430  |   |  |                   | (14,408     | ) |  |     | 206,604,355  |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Investing activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Acquisition of plant, property and equipment              |  |                                      | 17,060       |   |                                 |     | (9,869,258  | )                                 |  |     | (113,969,954 | ) |  |                   |             |   |  |     | (123,822,152 | )
|Acquisition of licenses                                   |  |                                      |              |   |                                 |     |             |                                   |  |     | (5,964,043   | ) |  |                   |             |   |  |     | (5,964,043   | )
|Dividends received                                        |  |                                      | 26,421,133   |   |                                 |     |             |                                   |  |     | (571,187     | ) |  |                   | (25,278,759 | ) |  |     | 571,187      |  
|Acquisition of non-controlling interest                   |  |                                      | (8,060,283   | ) |                                 |     |             |                                   |  |     | (73,849,936  | ) |  |                   | 8,060,283   |   |  |     | (73,849,936  | )
|Fixed asset sales                                         |  |                                      |              |   |                                 |     |             |                                   |  |     | 58,006       |   |  |                   |             |   |  |     | 58,006       |  
|Net cash flows provided by (used in) investing activities |  |                                      |              |   |                                 |     |             |                                   |  |     | 5,378,807    |   |  |                   |             |   |  |     | 5,378,807    |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|                                                          |  |                                      | 18,377,910   |   |                                 |     | (9,869,258  | )                                 |  |     | (188,918,307 | ) |  |                   | (17,218,476 | ) |  |     | (197,628,131 | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Financing activities:                                     |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Bank loans, net                                           |  |                                      | 89,462,233   |   |                                 |     |             |                                   |  |     | (46,721,960  | ) |  |                   |             |   |  |     | 42,740,273   |  
|Acquisition of permanent investments                      |  |                                      | (10,871,455  | ) |                                 |     |             |                                   |  |     | (181,219     | ) |  |                   |             |   |  |     | (11,052,674  | )
|Interest paid                                             |  |                                      | (12,868,552  | ) |                                 |     | (7,036,101  | )                                 |  |     | (1,425,138   | ) |  |                   |             |   |  |     | (21,329,791  | )
|Paid-In capital                                           |  |                                      |              |   |                                 |     |             |                                   |  |     | 8,060,283    |   |  |                   | (8,060,283  | ) |  |     |              |  
|Repurchase and others                                     |  |                                      | (17,836,724  | ) |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     | (17,836,724  | )
|Payment of dividends                                      |  |                                      | (15,057,814  | ) |                                 |     | (3,920,000  | )                                 |  |     | (21,700,000  | ) |  |                   | 25,293,167  |   |  |     | (15,384,647  | )
|Financial instruments                                     |  |                                      |              |   |                                 |     |             |                                   |  |     | 5,003,187    |   |  |                   |             |   |  |     | 5,003,187    |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Net cash flows (used in) provided by financing activities |  |                                      | 32,827,688   |   |                                 |     | (10,956,101 | )                                 |  |     | (56,964,847  | ) |  |                   | 17,232,884  |   |  |     | (17,860,376  | )
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Net (decrease) increase in cash and cash equivalents      |  |                                      | (1,928,034   | ) |                                 |     | (686,394    | )                                 |  |     | (6,269,724   | ) |  |                   |             |   |  |     | (8,884,152   | )
|Adjustment to cash flow for exchange rate differences     |  |                                      |              |   |                                 |     |             |                                   |  |     | (4,752,644   | ) |  |                   |             |   |  |     | (4,752,644   | )
|Cash and cash equivalents at beginning of the period      |  |                                      | 29,197,958   |   |                                 |     | 2,012,334   |                                   |  |     | 27,913,704   |   |  |                   |             |   |  |     | 59,123,996   |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  
|Cash and cash equivalents at end of the period            |  | Ps.                                  | 27,269,924   |   |                                 | Ps. | 1,325,940   |                                   |  | Ps. | 16,891,336   |   |  |                   |             |   |  | Ps. | 45,487,200   |  
|                                                          |  |                                      |              |   |                                 |     |             |                                   |  |     |              |   |  |                   |             |   |  |     |              |  



F-81