Twelfth Supplemental Indenture, dated as of February 8, 2012



 Exhibit 4.1 

 
  
 América Móvil, S.A.B. de C.V., 
 as Issuer 

to 
 The Bank of
New York Mellon, 
 as Trustee, Security Registrar, Paying Agent and Transfer Agent, 

The Bank of New York Mellon, London Branch, 
 as London Paying Agent and London Transfer Agent, 
 and 

The Bank of New York Mellon (Luxembourg) S.A., 
 as Luxembourg Paying Agent and Luxembourg Transfer Agent 
  

 

TWELFTH SUPPLEMENTAL INDENTURE  

Dated as of February 8, 2012 
  

 
 CNY1,000,000,000

 3.50% Senior Notes due 2015 
  

 







 TABLE OF CONTENTS 

 

							
	 	  	 	  	Page	 
		
	ARTICLE ONE DEFINITIONS	  	 	2	  
			
	Section 101.	  	Provisions of the Base Indenture	  	 	2	  
	Section 102.	  	Definitions	  	 	2	  
		
	ARTICLE TWO GENERAL TERMS AND CONDITIONS OF THE NOTES	  	 	3	  
			
	Section 201.	  	Designation, Principal Amount and Interest Rate	  	 	3	  
	Section 202.	  	Denominations	  	 	4	  
	Section 203.	  	Computation of Interest	  	 	4	  
	Section 204.	  	Forms Generally	  	 	4	  
	Section 205.	  	Form of Trustee’s Certificate of Authentication	  	 	14	  
	Section 206.	  	Registration of Transfer and Exchange	  	 	14	  
	Section 207.	  	Maintenance of Office or Agency	  	 	15	  
	Section 208.	  	Euro MTF Listing	  	 	15	  
	Section 209.	  	No Defeasance	  	 	15	  
		
	ARTICLE THREE MISCELLANEOUS PROVISIONS	  	 	16	  
			
	Section 301.	  	Consent to Service; Jurisdiction	  	 	16	  
	Section 302.	  	Governing Law; Waiver of Jury Trial	  	 	16	  
	Section 303.	  	Separability of Invalid Provisions	  	 	16	  
	Section 304.	  	Execution in Counterparts	  	 	17	  
	Section 305.	  	Certain Matters	  	 	17	  








 TWELFTH SUPPLEMENTAL INDENTURE, dated as of February 8, 2012 (this “Twelfth
Supplemental Indenture”), among América Móvil, S.A.B. de C.V., a sociedad anónima bursátil de capital variable organized and existing under the laws of the United Mexican States (“Mexico”)
(the “Company”), having its principal office at Lago Zurich 245, Plaza Carso / Edificio Telcel, Colonia Granada Ampliación, 11529, Mexico, D.F., Mexico, The Bank of New York Mellon, a banking corporation duly organized and
existing under the laws of the State of New York authorized to conduct a banking business, as Trustee (the “Trustee”), Security Registrar, Paying Agent and Transfer Agent, The Bank of New York Mellon, London Branch, as London Paying
Agent and London Transfer Agent (the “London Agent”), and The Bank of New York Mellon (Luxembourg) S.A., as Luxembourg Paying Agent (the “Luxembourg Paying Agent”) and Luxembourg Transfer Agent (the
“Luxembourg Transfer Agent”), to the Indenture, dated as of September 30, 2009, among the Company, Radiomóvil Dipsa, S.A. de C.V. (“Telcel”), a sociedad anónima de capital variable
organized and existing under the laws of Mexico, and the Trustee (the “2009 Indenture,” as amended and supplemented by the Ninth Supplemental Indenture, dated as of October 27, 2011, among the Company, Telcel and the Trustee
(the “Ninth Supplemental Indenture” and, together with the 2009 Indenture, the “Base Indenture”)). The Base Indenture, together with this Twelfth Supplemental Indenture, is herein referred to as the
“Indenture.” 
 W I T N E S S E T H: 
 WHEREAS, Section 301 of the Base Indenture provides for the issuance from time to time thereunder, in series, of debt Securities of the Company, and Section 901 of the Base Indenture provides
for the establishment of the form or terms of Securities issued thereunder through one or more supplemental indentures; 

WHEREAS, the Company desires by this Twelfth Supplemental Indenture to create a series of Securities to be issued under the Base
Indenture, as supplemented by this Twelfth Supplemental Indenture, and to be known as the Company’s “3.50% Senior Notes due 2015” (the “Notes”), which are to be initially limited in aggregate principal amount as
specified in this Twelfth Supplemental Indenture and the terms and provisions of which are to be as specified in this Twelfth Supplemental Indenture; 
 WHEREAS, the Company has duly authorized the execution and delivery of this Twelfth Supplemental Indenture to establish the Notes as a series of Securities under the Base Indenture and to provide for,
among other things, the issuance and form of the Notes and the terms, provisions and conditions thereof, and additional covenants for purposes of the Notes and the Holders thereof; and 

WHEREAS, all things necessary to make this Twelfth Supplemental Indenture a valid agreement of the Company, in accordance with its terms,
have been done. 







 NOW, THEREFORE, for and in consideration of the premises and the purchase and acceptance of
the Notes by the Holders thereof and for the purpose of setting forth, as provided in the Base Indenture, the form of the Notes and the terms, provisions and conditions thereof, the Company covenants and agrees with the Trustee, the London Agent and
the Luxembourg Paying Agent and the Luxembourg Transfer Agent as follows: 
 ARTICLE ONE 

DEFINITIONS 

Section 101. Provisions of the Base Indenture. 
 Except insofar as herein otherwise expressly provided, all the definitions, provisions, terms and conditions of the Base Indenture shall remain in full force and effect. The Base Indenture, as
supplemented by this Twelfth Supplemental Indenture, is in all respects ratified and confirmed, and the Base Indenture and this Twelfth Supplemental Indenture shall be read, taken and considered as one and the same instrument for all purposes and
every Holder of Notes authenticated and delivered under this Twelfth Supplemental Indenture shall be bound hereby. Notwithstanding any other provision of this Section 101 or the Base Indenture or this Twelfth Supplemental Indenture to the
contrary, to the extent any provisions of this Twelfth Supplemental Indenture or any Note issued hereunder shall conflict with any provision of the Base Indenture, the provisions of this Twelfth Supplemental Indenture or the Note, as applicable,
shall govern. 
 Section 102. Definitions. 
 For all purposes of this Twelfth Supplemental Indenture and the Notes, except as otherwise expressly provided or unless the subject matter or context otherwise requires: 

(a) any reference to an “Article” or a “Section” refers to an Article or Section, as the case may be, of this Twelfth
Supplemental Indenture; 
 (b) the words “herein,” “hereof” and “hereunder” and other words of
similar import refer to this Twelfth Supplemental Indenture as a whole and not to any particular Article, Section or other subdivision; 
 (c) all terms used in this Twelfth Supplemental Indenture and not defined herein have the meanings assigned to them in the Base Indenture; 

(d) the term “Securities” as defined in the Base Indenture and as used therein (including in any definition therein), shall be
deemed to include or refer to, as applicable, the Notes; 
 (e) the term “Depositary” as used in the Indenture shall
be deemed to refer, with respect to the Notes, to Clearstream and Euroclear, until a successor Depositary shall have become Depositary pursuant to the applicable provisions of the Base Indenture, and thereafter “Depositary” shall mean such
successor Depositary; and 
 (f) the following terms have the meanings given to them in this Section 102(f). 

“Business Day” means any day (other than a Saturday or Sunday) (i) on which commercial banks are open for general
business (including dealings in foreign exchange) in Hong Kong, London and New York City and are not authorized generally or obligated by law, regulation or executive order to close and (ii) on which the Trans-European Automated Real Time Gross
Settlement Express Transfer (TARGET2) System (or any successor thereto) is open for business. With respect to Notes in certificated form, references to “Business Day” shall also mean a day on which banking institutions generally are open
for business in the location of each office of a Transfer Agent, but only with respect to a payment or other action to occur at that office. 

  
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 “Calculation Amount” shall have the meaning set forth in Section 203
hereof. 
 “Common Depositary” means The Bank of New York Depository (Nominees) Limited, as common depositary
for the Depositary. 
 “CNY” and “Renminbi” mean Renminbi, the currency of the PRC that is
legal tender for the payment of public and private debts. 
 “Global Note” means a Note that evidences all or
part of the Notes and is authenticated and delivered to, and registered in the name of, the Common Depositary for such Notes or a nominee thereof. 
 “Hong Kong” means the Hong Kong Special Administrative Region of the PRC. 
 “Interest Payment Dates” means each February 8 and August 8, commencing on August 8, 2012. 
 “Interest Period” shall have the meaning set forth in Section 203 hereof. 
 “PRC” means the People’s Republic of China, excluding Hong Kong, the Macau Special Administrative Region and Taiwan. 

“Predecessor Note” means, with respect to any particular Note, every previous Note evidencing all or a portion of the
same debt as that evidenced by such particular Note; and, for the purposes of this definition, any Note authenticated and delivered under Section 305 of the Base Indenture in exchange for or in lieu of a mutilated, destroyed, lost or stolen
Note shall be deemed to evidence the same debt as the mutilated, destroyed, lost or stolen Note. 
 “Specified Office of
the London Agent” means, initially, the office of the London Agent, located at One Canada Square, London E14 5AL, United Kingdom. 
 ARTICLE TWO 
 GENERAL TERMS AND CONDITIONS OF THE NOTES 

Section 201. Designation, Principal Amount and Interest Rate. 
 (a) There is hereby authorized and established a series of Securities designated the “3.50% Senior Notes due 2015,” initially in an aggregate principal amount of CNY1,000,000,000 (which amount
does not include Notes authenticated and delivered upon registration of transfer of, in exchange for, or in lieu of, other Securities of such series pursuant to Sections 304, 305, 306, 906 or 1105 of the Base Indenture), which amount shall be
specified in the Company Order for the authentication and delivery of Notes pursuant to Section 303 of the Base Indenture. The principal of the Notes shall be due and payable at their Stated Maturity. 

  
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 (b) The Company may, from time to time and without the consent of the Holders, issue
additional notes on terms and conditions identical to those of the Notes (except for issue date, issue price and the date from which interest shall accrue and, if applicable, first be paid), which additional notes shall increase the aggregate
principal amount of, and shall be consolidated and form a single series with, the Notes. 
 (c) The Stated Maturity of the Notes
shall be February 8, 2015. The Notes shall bear interest at the rate of 3.50% per annum from February 8, 2012 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, as the case may be,
payable semi- annually in arrears on February 8 and August 8, commencing on August 8, 2012, until the principal thereof is paid or made available for payment on or prior to the Stated Maturity of the Notes; provided, however,
that any amount of interest on any Note which is overdue shall bear interest (to the extent that payment thereof shall be legally enforceable) at the rate per annum then borne by such Note from the date such amount is due to the day it is paid or
made available for payment, and such overdue interest shall be paid as provided in Section 306 of the Base Indenture. 
 Section 202.
Denominations. 
 The Notes shall be issued only in denominations of CNY1,000,000 and integral multiples of CNY10,000 in
excess thereof. 
 Section 203. Computation of Interest. 
 Interest on the Notes shall be calculated on the basis of a 365-day year (without taking into account any 366-day year) and the actual number of days elapsed from and including the last date on which
interest was paid or made available for payment (or, with respect to interest payable on the first Interest Payment Date, from the issue date of the Notes) to but excluding the next date on which an interest payment is made (each such period, an
“Interest Period”). Interest in respect of a Note shall be calculated per CNY10,000 in principal amount of such Note (the “Calculation Amount”). The amount of interest payable per Calculation Amount for any Interest
Period shall be calculated by multiplying (1) the product of the rate of interest per annum in respect of the Notes multiplied by the Calculation Amount by (ii) the quotient of the actual number of days in such Interest Period divided by
365, and rounding the resulting figure to the nearest CNY0.01 (CNY0.005 being rounded upwards). 
 Section 204. Forms Generally.

 The Notes shall be in substantially the forms set forth in this Section 204, with such appropriate insertions, omissions,
substitutions and other variations as are required or permitted by this Twelfth Supplemental Indenture, and may have such letters, numbers or other marks of identification and such legends or endorsements placed thereon as may be required to comply
with the rules of any securities exchange or as may, consistently herewith, be determined by the officers executing such Notes, as evidenced by their execution thereof; provided that if any Notes are issued in certificated and not global
form, such Notes shall be in substantially the form set forth in this Section 204, but shall not contain the legends relating to Global Notes or the “Schedule of Increases or Decreases in Global Note.” 

Upon their original issuance, the Notes shall be issued in the form of one or more Global Notes in definitive, fully registered form,
without coupons, substantially in the form set forth in this Section 204. Such Global Notes shall be registered in the name of the Common Depositary, or its nominee, and deposited with the Common Depositary, duly executed by the Company and
authenticated by the Trustee as hereinafter provided. The aggregate amount of any Global Notes may from time to time be increased or decreased by adjustments made on the records of the Common Depositary. 

  
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 (a) Form of Face of Note. 

[INCLUDE IF NOTE IS A GLOBAL NOTE AND THE COMMON DEPOSITARY IS THE BANK OF NEW YORK DEPOSITORY (NOMINEES) LIMITED, AS COMMON
DEPOSITARY FOR CLEARSTREAM AND EUROCLEAR—THIS NOTE IS A GLOBAL SECURITY AND IS REGISTERED IN THE NAME OF THE BANK OF NEW YORK DEPOSITORY (NOMINEES) LIMITED, AS COMMON DEPOSITARY (THE “COMMON DEPOSITARY”) FOR CLEARSTREAM BANKING,
SOCIÉTÉ ANONYME AND EUROCLEAR BANK S.A./N.V. UNLESS AND UNTIL THIS NOTE IS EXCHANGED IN WHOLE OR IN PART FOR NOTES IN DEFINITIVE FORM, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE COMMON DEPOSITARY OR ANOTHER DEPOSITARY OR
BY THE COMMON DEPOSITARY OR A NOMINEE OF THE COMMON DEPOSITARY TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY.] 
 AMÉRICA MÓVIL, S.A.B. DE C.V. 
 3.50% Senior Notes due 2015

 ISIN Number: XS0731597505 / Common Code: 073159750 
  

			
	No. 1	  	CNY1,000,000,000

 América Móvil, S.A.B. de C.V. (the “Company,” which term includes any
successor Person under the Indenture hereinafter referred to), a sociedad anónima bursátil de capital variable organized and existing under the laws of the United Mexican States (“Mexico”), for value received,
hereby promises to pay to The Bank of New York Depository (Nominees) Limited, or registered assigns, as common depositary for Clearstream Banking, société anonyme and Euroclear Bank, S.A./N.V., the principal sum of One Billion
Renminbi, as revised by the Schedule of Increases and Decreases in Global Note attached hereto on February 8, 2015 (unless earlier redeemed, in which case, on the applicable Redemption Date) and to pay interest thereon from February 8,
2012 or from the most recent Interest Payment Date to which interest has been paid or duly provided for, as the case may be, semi-annually in arrears on February 8 and August 8 of each year, commencing on August 8, 2012 at the rate of
3.50% per annum, until the principal hereof is paid or made available for payment; provided that any principal of, and any premium and interest on, this Note which is overdue shall bear interest (to the extent that payment thereof shall
be legally enforceable) at the rate per annum then borne by this Note from the date such amount is due to but not including the day it is paid or made available for payment, and such overdue interest shall be paid as provided in Section 306 of
the Base Indenture. 
 Interest on the Notes shall be calculated on the basis of a 365-day year and the actual number of days
elapsed from and including the last Interest Payment Date (or, with respect to interest payable on the first Interest Payment Date, from the issue date of the Notes) to but excluding the Interest Payment Date on which the interest payment falls due.
Interest in respect of a Note shall be calculated per CNY10,000 in principal amount of such Note (the “Calculation Amount”). The amount of interest payable per Calculation Amount for any period shall be calculated by multiplying
(1) the product of the rate of interest per annum in respect of the Notes multiplied by the Calculation Amount by (ii) the quotient of the actual number of days in the relevant period divided by 365, and rounding the resulting figure to
the nearest CNY0.01 (CNY0.005 being rounded upwards). 

  
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 The interest so payable, and punctually paid or duly provided for, on any Interest Payment
Date shall, as provided in the Indenture, be paid to the Person in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on the Regular Record Date for such interest, which shall be the January 24 or the
July 24 (whether or not a Business Day) next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for on any Interest Payment Date shall forthwith cease to be payable to the Holder on such Regular
Record Date and may either be paid to the Person in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice
whereof shall be given to Holders of this Note not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which this Note may be
listed, and upon such notice as may be required by such exchange, all as more fully provided in the Indenture. 
 Payment of the
principal of, and premium, if any, and interest on, this Note shall be made at the office of the Trustee or agency of the Company in the Borough of Manhattan, The City of New York, New York and at the Specified Office of the London Agent and, if and
for so long as the Notes are admitted to listing on the Official List of the Luxembourg Stock Exchange and trading on the Euro MTF, at the office of the Luxembourg Paying Agent, in each case maintained for such purpose and at any other office or
agency maintained by the Company for such purpose, in Renminbi against surrender of this Note in the case of any payment due at the Maturity of the principal thereof (other than any payment of interest that first becomes payable on a day other than
an Interest Payment Date); provided, however, that at the option of the Company, payment of interest may be made by check mailed to the address of the Person entitled thereto as such address shall appear in the Security Register. [If the
Note is a Global Note, then insert — Notwithstanding the foregoing, payment of any amount payable in respect of a Global Note shall be made in accordance with the Applicable Procedures of the Depositary.] 

Reference is hereby made to the further provisions of this Note set forth on the reverse hereof, which further provisions shall for all
purposes have the same effect as if set forth at this place. 
 Unless the certificate of authentication hereon has been
executed by the Trustee referred to on the reverse hereof by manual signature, this Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed. 
 Dated: 
  

			
	AMÉRICA MÓVIL, S.A.B. DE C.V.
		
	By:	 	  

		 	Name:
		 	Title:
		
	By:	 	  

		 	Name:
		 	Title:



  
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 (b) Form of Reverse of Note. 

This Note is one of a duly authorized issue of securities of the Company (the “Notes”), issued under an Indenture, dated
as of September 30, 2009 (the “2009 Indenture”), among the Company, Radiomóvil Dipsa, S.A. de C.V., a sociedad anónima de capital variable organized and existing under the laws of Mexico
(“Telcel,” which term includes any successor Person under the Indenture), The Bank of New York Mellon, as Trustee (the “Trustee,” which term includes any successor trustee under the Indenture), Security Registrar,
Paying Agent and Transfer Agent, as amended and supplemented by the Ninth Supplemental Indenture dated as of October 27, 2011 (together with the 2009 Indenture, the “Base Indenture”), among the Company, Telcel and the Trustee,
as further supplemented by the Twelfth Supplemental Indenture dated as of February 8, 2012 (the “Twelfth Supplemental Indenture” and, together with the Base Indenture, the “Indenture”) among the Company, the
Trustee, The Bank of New York Mellon, London Branch, as London Paying Agent and London Transfer Agent, and The Bank of New York Mellon (Luxembourg) S.A., as Luxembourg Paying Agent and Luxembourg Transfer Agent and reference is hereby made to the
Indenture for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Notes and of the terms upon which the Notes are, and are to be, authenticated and
delivered. The terms, conditions and provisions of this Note are those stated in the Indenture (including those made a part of the Indenture by reference to the Trust Indenture Act) and those set forth in this Note. This Note is one of the series
designated on the face hereof. 
 Additional notes on terms and conditions identical to those of this Note (except for issue
date, issue price and the date from which interest shall accrue and, if applicable, first be paid) may be issued by the Company without the consent of the Holders of the Notes. The amount evidenced by such additional Notes shall increase the
aggregate principal amount of, and shall be consolidated and form a single series with, the Notes, in which case the Schedule of Increases and Decreases in Global Note attached hereto shall be correspondingly adjusted. 

In any case where any Interest Payment Date, Redemption Date or Stated Maturity of any Note shall not be a Business Day, then
(notwithstanding any other provision of the Indenture or of the Notes) payment of principal and premium, if any, or interest need not be made on such date, but may be made on the next succeeding Business Day, unless such payment would thereby fall
into the next calendar month, in which case, the Interest Payment Date, Redemption Date or Stated Maturity shall be the immediately preceding Business Day, with the same force and effect as if made on the Interest Payment Date, Redemption Date or at
the Stated Maturity, as the case may be; provided that no interest shall accrue for the period from and after such Interest Payment Date, Redemption Date or Stated Maturity, as the case may be. 

In the event of redemption of this Note in part only, a new Note or Notes of this series and of like tenor for the unredeemed portion
hereof shall be issued in the name of the Holder hereof upon the cancellation hereof. 
 If an Event of Default with respect to
Notes shall occur and be continuing, the principal of all of the Notes may be declared due and payable in the manner and with the effect provided in the Indenture. 

  
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 If, by reason of Inconvertibility, Non-transferability or Illiquidity, the Company is not
able to satisfy payments of principal, interest or Additional Amounts, if any, on any Notes when due, in whole or in part, in Renminbi in Hong Kong, the Company may, on giving irrevocable notice to the Holders of the Notes not less than five nor
more than 30 Business Days prior to the relevant payment date, settle any such payment, in whole or in part, in U.S. dollars on that payment date at the U.S. Dollar Equivalent of the amount that was otherwise payable in Renminbi. In such event,
the Company shall make payments in respect of the Notes in U.S. dollars, as determined in its discretion, (1) by wire transfer to a U.S. dollar-denominated account maintained by the relevant Holders with a bank in New York City as such account
shall have been provided to the Security Registrar and appears on the Security Register or (2) in the form of U.S. dollar-denominated checks drawn on a bank in New York City by mailing the checks payable to or upon the written order of the
relevant Holders to the addresses of such Holders as they appear in the Security Register; provided that, if any date for payment in respect of any Note is not a Business Day, such Holders shall not be entitled to payment until the next
following Business Day nor to any interest or other sum in respect of such postponed payment. Any such payment made under these circumstances in U.S. dollars shall constitute valid payment in full and shall not constitute a Default in respect of the
Notes. 
 “Calculation Agent” means an independent calculation agent that is not an Affiliate of the Company,
appointed by the Company in good faith. 
 “CNY Dealer” means an independent foreign exchange dealer of
international repute active in the Renminbi exchange market in Hong Kong. 
 “Determination Business Day” means
any day (other than a Saturday or Sunday) on which commercial banks are open for general business (including dealings in foreign exchange) in Hong Kong, London and New York City. 

“Determination Date” means the day which is two Determination Business Days before the relevant payment date.

 “Governmental Authority” means any de facto or de jure government or any agency or
instrumentality thereof, court, tribunal, administrative or other governmental authority or any other entity (private or public) charged with the regulation of the financial markets (including the Central Bank) of Hong Kong. 

“Illiquidity” means the general Renminbi exchange market in Hong Kong becomes illiquid as a result of which the Company
cannot obtain sufficient Renminbi in order to satisfy its obligation to pay interest or principal, in whole or in part, in respect of the Notes as determined by the Company in good faith and in a commercially reasonable manner following consultation
with two CNY Dealers. 
 “Inconvertibility” means the occurrence of any event that makes it impossible for the
Company to convert any Renminbi amount due in respect of the Notes from or into U.S. dollars in the general Renminbi exchange market in Hong Kong, except if such impossibility is due solely to the failure by the Company to comply with any law, rule
or regulation enacted by any Governmental Authority, unless such law, rule or regulation is enacted on or after February 1, 2012 and it is impossible for the Company, due to an event beyond its control, to comply with such law, rule or
regulation. 

  
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 “Non-transferability” means the occurrence of any event that makes it
impossible for the Company to deliver Renminbi between accounts inside Hong Kong or from an account outside Hong Kong to an account inside Hong Kong, or vice versa, except if such impossibility is due solely to the failure by the Company to
comply with any law, rule or regulation enacted by any Governmental Authority, unless such law, rule or regulation is enacted or becomes effective on or after February 1, 2012 and it is impossible for the Company, due to an event beyond its
control, to comply with such law, rule or regulation. 
 “Spot Rate” means the spot CNY/U.S. dollar exchange
rate for the purchase of U.S. dollars with Renminbi in the over-the-counter Renminbi exchange market in Hong Kong for settlement in two Determination Business Days, as determined by the Calculation Agent at or around 11:00 a.m. (Hong Kong time) on
the Determination Date, on a deliverable basis by reference to Reuters Screen Page TRADCNY3, or if no such rate is available, on a non-deliverable basis by reference to Reuters Screen Page TRADNDF. If neither of the foregoing rates is available, the
Calculation Agent shall determine the Spot Rate at or around 11:00 a.m. (Hong Kong time) on the Determination Date as the most recently available CNY/U.S. dollar official fixing rate for settlement in two Determination Business Days reported by The
State Administration of Foreign Exchange of the PRC, which is reported on the Reuters Screen Page CNY=SAEC. Reference to a page on the Reuters Screen means the display page so designated on the Reuter Monitor Money Rates Service (or any successor
service) or such other page as may replace that page for the purpose of displaying a comparable currency exchange rate. 

“U.S. Dollar Equivalent” means the Renminbi amount converted into U.S. dollars using the Spot Rate for the relevant
Determination Date. 
 The Company shall provide notice to the Trustee and each Paying Agent of the appointment of a Calculation
Agent and of any payment of U.S. Dollar Equivalent. 
 All notifications, opinions, determinations, certificates,
calculations, quotations and decisions given, expressed, made or obtained for the purposes of the foregoing provisions by the Company or the Calculation Agent, shall (in the absence of willful default, bad faith or manifest error) be binding on the
Company, each other Agent under the Indenture and all Holders of the Notes. 
 All payments of principal, premium, if any, and
interest in respect of the Notes shall be made after withholding or deduction for any present or future taxes, duties, assessments or governmental charges of whatever nature imposed, levied, collected, withheld or assessed by or on behalf of Mexico
or any authority therein or thereof having power to tax (“Mexican Taxes”). In the event of any withholding or deduction for any Mexican Taxes, the Company shall pay such additional amounts (“Additional Amounts”) as
will result in receipt by the Holders of Notes on the respective due dates of such amounts as would have been received by them had no such withholding or deduction (including for any Mexican Taxes payable in respect of Additional Amounts) been
required, except that no such Additional Amounts shall be payable with respect to any payment on a Note to the extent: 
 (i) that any such taxes, duties, assessments or other governmental charges are imposed solely because of (A) a connection between the Holder and Mexico other than the ownership or holding of such
Note and the mere receipt of payments with respect to such Note or (B) failure by the Holder or any other Person to comply with any certification, identification or other reporting requirement concerning the nationality, residence, identity or
connection with Mexico of the Holder or any beneficial owner of such Note if compliance is required by law, regulation or by an applicable income tax treaty to which Mexico is a party, as a precondition to


  
 9 








 
exemption from, or reduction in the rate of, the tax, assessment or other governmental charge and we have given the Holders at least 30 days’ notice prior to the first payment date with
respect to which such certification, identification or reporting requirement is required to the effect that Holders will be required to provide such information and identification; 

(ii) of any such taxes, duties, assessments or other governmental charges with respect to such Note presented for payment
more than 15 days after the date on which such payment became due and payable or the date on which payment thereof is duly provided for and notice thereof given to Holders, whichever occurs later, except to the extent that the Holder of such Note
would have been entitled to such Additional Amounts on presenting such Note for payment on any date during such 15-day period; 
 (iii) of estate, inheritance, gift or other similar taxes, assessments or other governmental charge imposed with respect to such Note; 

(iv) of any tax, duty, assessment or other governmental charge payable otherwise than by deduction or withholding from
payments on such Note; 
 (v) of any payment on such Note to a Holder who is a fiduciary or partnership or a
person other than the sole beneficial owner of any such payment, to the extent that a beneficiary or settlor with respect to such fiduciary, a member of such a partnership or the beneficial owner of such payment would not have been entitled to the
Additional Amounts had such beneficiary, settlor, member or beneficial owner been the Holder of such Note; 

(vi) of any tax, duty, assessment or other governmental charge imposed on a payment to an individual and required to be
made pursuant to European Council Directive 2003/48/EC on the taxation of savings income or any other directive implementing the conclusions of the ECOFIN Council meetings of November 26 and 27, 2000, December 13, 2001, and
January 21, 2003, or any law or agreement implementing or complying with, or introduced in order to conform to, such a directive; and 
 (vii) any combination of the items in Clauses (i) through (vi) above. 

For purposes of the provisions described in Clause (i) above, the term “Holder” of any Note means the direct nominee of
any beneficial owner of such Note, which holds such beneficial owner’s interest in such Note. Notwithstanding the foregoing, the limitations on the Company’s obligation to pay Additional Amounts set forth in Clause (i)(B) above shall not
apply if (a) the provision of information, documentation or other evidence described in such Clause (i)(B) would be materially more onerous, in form, in procedure or in the substance of information disclosed, to a Holder or beneficial owner of
a Note (taking into account any relevant differences between U.S. and Mexican law, regulation or administrative practice) than comparable information or other reporting requirements imposed under U.S. tax law (including the United States - Mexico
Income Tax Treaty), regulations (including proposed regulations) and administrative practice or (b) Rule I.3.17.11 (or any successor provision) is in effect, unless the provision of the information, documentation or other evidence described in
such Clause (i)(B) is expressly required by statute, regulation, rule or administrative practice in order to apply Rule I.3.17.11 (or any successor provision) and the Company cannot obtain such information, documentation or other evidence on its own
through reasonable diligence and the Company otherwise would meet the requirements for application of Rule I.3.17.11 (or any successor provision). In addition, such Clause (i)(B) shall not be construed to require that a non-Mexican pension or
retirement fund or a non-Mexican financial institution or any other Person register with the Ministry of Finance and Public Credit for the purpose of establishing eligibility for an exemption from or reduction of Mexican withholding tax. 


  
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 The Company shall provide the Trustee with the constancia or other relevant
documentation, if any (which may consist of certified copies of such documentation), satisfactory to the Trustee evidencing the payment of Mexican Taxes in respect of which the Company has paid any Additional Amounts. Copies of such documentation
shall be made available to the Holders of the Notes or any Paying Agent, as applicable, upon request therefor. 
 The Company
shall pay all stamp, issue, registration, documentary or other similar duties, if any, which may be imposed by Mexico or any governmental entity or political subdivision therein or thereof, or any taxing authority of or in any of the foregoing, with
respect to the Indenture or the issuance of the Notes. 
 All references herein and in the Indenture to principal, premium, if
any, interest or any other amount payable in respect of any Note shall be deemed to include all Additional Amounts, if any, payable in respect of such principal, premium, interest or other amount payable, unless the context otherwise requires, and
express mention of the payment of Additional Amounts in any provision hereof shall not be construed as excluding reference to Additional Amounts in those provisions hereof where such express mention is not made. 

In the event that Additional Amounts actually paid with respect to the Notes pursuant to the preceding paragraphs are based on rates of
deduction or withholding of withholding taxes in excess of the appropriate rate applicable to the Holder of such Notes, and, as a result thereof such Holder is entitled to make claim for a refund or credit of such excess from the authority imposing
such withholding tax, then such Holder shall, by accepting such Notes, be deemed to have assigned and transferred all right, title, and interest to any such claim for a refund or credit of such excess to the Company. However, by making such
assignment, the Holder makes no representation or warranty that the Company will be entitled to receive such claim for a refund or credit and incurs no other obligation with respect thereto. 

All references herein and in the Indenture to principal in respect of any Note shall be deemed to mean and include any Redemption Price
payable in respect of such Note pursuant to any redemption right hereunder (and all such references to the Stated Maturity of the principal in respect of any Note shall be deemed to mean and include the Redemption Date with respect to any such
Redemption Price), and all such references to principal, premium, interest or Additional Amounts shall be deemed to mean and include any amount payable in respect hereof pursuant to Section 1009 of the Base Indenture. 

The Company may, at its option, redeem the Notes upon not less than 30 nor more than 60 days’ notice, at any time in whole but not
in part, at a Redemption Price equal to the sum of (A) 100% of the principal amount of the Notes being redeemed, (B) accrued and unpaid interest thereon to the Redemption Date and (C) any Additional Amounts which would otherwise be
payable thereon up to but not including the Redemption Date, solely if, as a result of any amendment to, or change in, the laws (or any rules or regulations thereunder) of Mexico or any political subdivision or taxing authority thereof or therein
affecting taxation or any amendment to or change in an official interpretation or application of such laws, rules or regulations, which amendment to or change in such laws, rules or regulations becomes effective on or after February 1, 2012,
the Company would be obligated, after making reasonable endeavors to avoid such requirement, to pay Additional Amounts in excess of the Additional Amounts that the Company would be obligated to pay if payments made on the Notes were subject to
withholding or deduction of Mexican Taxes at the rate of 4.9%; provided, however, that (1) no notice of redemption 

  
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pursuant to this paragraph may be given earlier than 90 days prior to the earliest date on which the Company would be obligated to pay such Additional Amounts if a payment on the Notes were then
due and (2) at the time such notice of redemption is given, the Company’s obligation to pay such Additional Amounts remains in effect. 
 The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company, on the one hand, and the rights of the Holders
of the Notes, on the other hand, at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the Notes at the time Outstanding. The Indenture also contains provisions (1) permitting the
Holders of a majority in principal amount of the Notes at the time Outstanding, on behalf of the Holders of all Notes, to waive compliance by the Company with certain provisions of the Indenture and (2) permitting the Holders of a majority in
principal amount of the Notes at the time Outstanding, on behalf of the Holders of all Notes, to waive certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Note shall be conclusive and
binding upon such Holder and upon all future Holders of this Note and of any Note issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Note.

 As provided in and subject to the provisions of the Indenture, the Holder of this Note shall not have the right to institute
any proceeding with respect to the Indenture or for the appointment of a receiver or trustee, or for any other remedy thereunder, unless such Holder shall have previously given the Trustee written notice of a continuing Event of Default with respect
to the Notes, the Holders of not less than 25% in principal amount of the Notes at the time Outstanding shall have made written request to the Trustee to institute proceedings in respect of such Event of Default as Trustee and offered the Trustee
indemnity reasonably satisfactory to it, and the Trustee shall not have received from the Holders of a majority in principal amount of Notes at the time Outstanding a direction inconsistent with such request, and shall have failed to institute any
such proceeding, for 60 days after receipt of such notice, request and offer of indemnity. The foregoing shall not apply to any suit instituted by the Holder of this Note for the enforcement of any payment of principal hereof or premium, if any,
and/or interest hereon on or after the respective due dates expressed herein. 
 No reference herein to the Indenture and no
provision of this Note or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and premium, if any, and interest on this Note at the times, place and rate, and in the coin
or currency, herein prescribed. 
 As provided in the Indenture, and subject to certain limitations therein set forth
(including, without limitation, the restrictions on transfer under Section 304 of the Base Indenture), the transfer of this Note is registrable in the Security Register, upon surrender of this Note for registration of transfer at the office of
the Trustee or agency of the Company in any place where the principal of and any premium and interest on this Note are payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Security
Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Notes of this series and of like tenor, of authorized denominations and for the same aggregate principal amount, shall be issued
to the designated transferee or transferees. 
 The Notes are issuable only in registered form without coupons in denominations
of CNY1,000,000 and integral multiples of CNY10,000 in excess thereof. As provided in the Indenture, and subject to certain limitations therein set forth, Notes are exchangeable for a like aggregate principal amount of Notes of like tenor of a
different authorized denomination, as requested by the Holder surrendering the same. 

  
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 No service charge shall be made for any such registration of transfer or exchange, but the
Company or the Trustee may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. 
 Prior to due presentment of this Note for registration of transfer, the Company, the Trustee and any agent of the Company or of the Trustee may treat the Person in whose name this Note is registered as
the owner hereof for all purposes, whether or not this Note is overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary. 
 [If the Note is a Global Note, then insert — This Note is a Global Note and is subject to the provisions of the Indenture relating to Global Notes, including the limitations in
Section 304 of the Base Indenture on transfers and exchanges of Global Notes.] 
 This Note and the Indenture shall be
governed by, and construed in accordance with, the law of the State of New York. 
 All terms used in this Note which are
defined in the Indenture shall have the meanings assigned to them in the Indenture. 
  

 
 ABBREVIATIONS

 The following abbreviations, when used in the inscription of the face of this Note, shall be construed as though they were
written out in full according to applicable laws or regulations: 
  

									
	TEN COM -	 	as tenants in common	 		 	
UNIF GIFT MIN ACT—                   
 

                         
                       (Cust)

	TEN ENT -	 	as tenants by the entireties	 		 	Custodian                      under Uniform	 	
		 		 		 	                      (Minor)	 	
	JT TEN -	 	as joint tenants with right of survivorship and not as tenants in common	 		 	 Gifts to Minors Act
                    

                         
               (State)
	 	

 Additional abbreviations may also be used 

though not in the above list. 
  

 
 SCHEDULE OF
INCREASES OR DECREASES IN GLOBAL NOTE 
 The following increases or decreases in this Global Note have been made: 

 

									
	Date of transfer or exchange	  	Amount of decrease in
principal amount of this
Global Note	  	Amount of increase in
principal 
amount of this
Global Note	  	Principal amount of this
Global Note 
following such
decrease or increase	  	Signature of authorized
signatory of Trustee or
Security Registrar
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	
		  		  		  		  	


  
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 Section 205. Form of Trustee’s Certificate of Authentication. 

The Trustee’s certificate of authentication shall be in substantially the following form: 

This is one of the Notes referred to in the within-mentioned Indenture. 
 Dated: 
  

			
	 THE BANK OF NEW YORK MELLON,
as Trustee

		
	By:	 	  

		 	Authorized Officer


 Section 206. Registration of Transfer and Exchange. 

(a) Section 304(2) of the Base Indenture is hereby amended and restated with respect to the Notes as follows: 

“(2) Notwithstanding any other provision in this Indenture or the Notes, no Global Note may be exchanged in whole or
in part for Notes registered, and no transfer of a Global Note in whole or in part may be registered, in the name of any Person other than the Depositary or a nominee thereof unless (A) the Depositary has notified the Company that it is
unwilling or unable to continue as Depositary for such Global Note and a successor Depositary is not appointed within 90 days, (B) either Euroclear or Clearstream, or a successor clearing system, is closed for business for a continuous period
of 14 days (other than by reason of holidays, statutory or otherwise) or announces its intention to permanently cease business or does in fact do so, (C) there shall have occurred and be continuing an Event of Default with respect to such
Global Note or (D) a request for certificates has been made by the Company upon 60 days’ prior written notice given to the Trustee in accordance with the Applicable Procedures of the Depositary and a copy of such notice has been received
by the Company from the Trustee. Any Global Note exchanged pursuant to Clause (A) or (B) above shall be so exchanged in whole and not in part and any Global Note exchanged pursuant to Clause (C) or (D) above may be exchanged in
whole or from time to time in part as directed by the Depositary. Any Note issued in exchange for a Global Note or any portion thereof shall be a Global Note; provided that any such Note so issued that is registered in the name of a Person
other than the Depositary or a nominee thereof shall not be a Global Note.” 

  
 14 









 (b) Section 304(5) of the Base Indenture is hereby amended and restated with respect to
the Notes as follows: 
 “(5) None of the Depositary or any members of, or participants in, the Depositary
(“Agent Members”), or any Person on whose behalf Agent Members may act, shall have any rights under this Indenture with respect to any Global Note, or under any Global Note, and the Depositary or such nominee, as the case may be,
may be treated by the Company, the Trustee and any agent of the Company or the Trustee as the absolute owner and holder of such Global Note for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Company, the
Trustee or any agent of the Company or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depositary or such nominee, as the case may be, or impair, as between the Depositary, its Agent Members
and any other person on whose behalf an Agent Member may act, the operation of customary practices of such Persons governing the exercise of the rights of a holder of any Note.” 
 Section 207. Maintenance of Office or Agency. 
 (a) With respect to any
Notes that are not in the form of a Global Note, the Company shall maintain in the Borough of Manhattan, The City of New York, New York and in London an office or agency, in each case, in accordance with Section 1002 of the Base Indenture.

 (b) If and for so long as the Notes are admitted to listing on the Official List of the Luxembourg Stock Exchange and trading
on the Euro MTF, the Company shall maintain pursuant to Section 1002 of the Base Indenture an office or agency in Luxembourg where the Notes may be presented or surrendered for payment, where the Notes may be surrendered for registration of
transfer or exchange and where notices and demands to or upon the Company in respect of the Notes and the Indenture may be served. The Company has initially appointed The Bank of New York Mellon (Luxembourg) S.A. as the Paying Agent and the Transfer
Agent for such transfers and exchanges and for such notices and demands in Luxembourg with respect to the Notes. The Bank of New York Mellon (Luxembourg) S.A. has its main offices at 2-4 rue Eugène Rupert, Vertigo Building-Polaris, L-2453
Luxembourg. 
 (c) If for any reason The Bank of New York Mellon (Luxembourg) S.A. shall not continue as the Luxembourg Paying
Agent or Luxembourg Transfer Agent for such transfers and exchanges and for such notices and demands in Luxembourg with respect to the Notes and the Notes are admitted to listing on the Official List of the Luxembourg Stock Exchange and trading on
the Euro MTF, the Company shall appoint a substitute Paying Agent and/or Transfer Agent, as applicable, in Luxembourg, in accordance with the rules then in effect of the Luxembourg Stock Exchange and the provisions of the Indenture and the Notes.
Following the appointment of a substitute Paying Agent or Transfer Agent in Luxembourg, the Company shall give the Holders of the Notes notice of such appointment pursuant to Section 106 of the Base Indenture. 

Section 208. Euro MTF Listing. 
 The Company shall use its reasonable best efforts to have the Notes admitted to listing on the Official List of the Luxembourg Stock Exchange and trading on the Euro MTF; provided, however, that
the Company will not be required to maintain such admission to listing and trading. 
 Section 209. No Defeasance. 

The provisions of Article Twelve of the Ninth Supplemental Indenture shall not be applicable to the Notes. 

  
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 ARTICLE THREE 
 MISCELLANEOUS PROVISIONS 
 Section 301. Consent to Service; Jurisdiction.

 Each party hereto agrees that any legal suit, action or proceeding arising out of or relating to this Twelfth Supplemental
Indenture, the Base Indenture or the Notes may be instituted in any federal or state court in the Borough of Manhattan, The City of New York, New York and in the courts of its own corporate domicile, in respect of actions brought against each such
party as a defendant, and each waives any objection which it may now or hereafter have to the laying of the venue of any such legal suit, action or proceeding, waives any immunity from jurisdiction or to service of process in respect of any such
suit, action or proceeding, waives any right to which it may be entitled on account of place of residence or domicile, and irrevocably submits to the jurisdiction of any such court in any such suit, action or proceeding. The Company hereby
designates and appoints CT Corporation System, 111 Eighth Avenue, 13th Floor, New York, New York 10011, as its authorized agent upon which process may be served in any legal suit, action or proceeding arising out of or relating to this Twelfth
Supplemental Indenture or the Notes which may be instituted in any federal or state court in the Borough of Manhattan, The City of New York, New York, and agrees that service of process upon such agent shall be deemed in every respect effective
service of process upon the Company in any such suit, action or proceeding and further designates its domicile, the domicile of CT Corporation System specified above and any domicile CT Corporation System may have in the future as its domicile to
receive any notice hereunder (including service of process). If for any reason CT Corporation System (or any successor agent for this purpose) shall cease to act as agent for service of process as provided above, the Company shall promptly appoint a
successor agent for this purpose reasonably acceptable to the Trustee. The Company agrees to take any and all actions as may be necessary to maintain such designation and appointment of such agent in full force and effect. 

Section 302. Governing Law; Waiver of Jury Trial. 
 (a) THIS TWELFTH SUPPLEMENTAL INDENTURE AND THE NOTES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK. 

(b) EACH OF THE PARTIES HERETO (EXCEPT, FOR THE AVOIDANCE OF DOUBT, THE HOLDERS OF THE NOTES) HEREBY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY APPLICABLE LAW, ALL RIGHTS TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO THE BASE INDENTURE, THIS TWELFTH SUPPLEMENTAL INDENTURE, THE NOTES OR THE
TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY. 
 Section 303. Separability of Invalid Provisions. 

In case any one or more of the provisions contained in this Twelfth Supplemental Indenture should be invalid, illegal or unenforceable in
any respect, such invalidity, illegality or unenforceability shall not affect any other provisions contained in this Twelfth Supplemental Indenture, and to the extent and only to the extent that any such provision is invalid, illegal or
unenforceable, this Twelfth Supplemental Indenture shall be construed as if such provision had never been contained herein. 

  
 16 









 Section 304. Execution in Counterparts. 

This Twelfth Supplemental Indenture may be simultaneously executed and delivered in any number of counterparts, each of which when so
executed and delivered shall be deemed to be an original, and such counterparts shall together constitute but one and the same instrument. 

Section 305. Certain Matters. 
 (a) The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Twelfth Supplemental Indenture or for or in respect of the recitals contained
herein, all of which are made solely by the Company. 
 (b) In the performance of its obligations hereunder, the Trustee and the
London Agent (as a Paying Agent) shall be provided with any rights, benefits, protections, indemnities and immunities afforded to it pursuant to the Ninth Supplemental Indenture. 

[Signature page follows] 

  
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 IN WITNESS WHEREOF, the parties hereto have caused this Twelfth Supplemental Indenture to be
duly executed on their respective behalves, all as of the day and year first written above. 
  

					
	AMÉRICA MÓVIL, S.A.B. DE C.V.,
		 	as Issuer
		
	By:	 	 /s/ Carlos José García Moreno Elizondo

		 	Name:	 	Carlos José García Moreno Elizondo
		 	Title:	 	Chief Financial Officer
		
	By:	 	 /s/ Alejandro Cantú Jiménez

		 	Name:	 	Alejandro Cantú Jiménez
		 	Title:	 	General Counsel
	
	THE BANK OF NEW YORK MELLON,
		 	as Trustee, Security Registrar, Paying Agent and Transfer Agent
		
	By:	 	 /s/ Erika Walker

		 	Name:	 	Erika Walker
		 	Title:	 	Vice President
	
	THE BANK OF NEW YORK MELLON, LONDON BRANCH,
		 	as London Paying Agent and London Transfer Agent
		
	By:	 	 /s/ Erika Walker

		 	Name:	 	Erika Walker
		 	Title:	 	Vice President
	
	THE BANK OF NEW YORK MELLON (LUXEMBOURG) S.A.,
		 	as Luxembourg Paying Agent and Luxembourg Transfer Agent
		
	By:	 	 /s/ Erika Walker

		 	Name:	 	Erika Walker
		 	Title:	 	 Attorney-in-Fact




  
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