EX-4.3





 Exhibit 4.3 
  

 
 América Móvil, S.A.B. de
C.V., 
 Citibank, N.A., 
 as
Trustee, Registrar and Transfer Agent 
 and 

Citibank, N.A., London Branch, 

as Paying Agent 
  

 

SECOND SUPPLEMENTAL INDENTURE 

Dated as of April 22, 2019 
  

 

U.S.$1,250,000,000 
 4.375% Senior
Notes due 2049 
  
  












 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
		 	ARTICLE ONE DEFINITIONS	  			
			
	Section 101.	 	 Provisions of the Base Indenture.
	  	 	1	 
	Section 102.	 	 Definitions.
	  	 	2	 
			
		 	ARTICLE TWO GENERAL TERMS AND CONDITIONS OF THE NOTES	  			
			
	Section 201.	 	 Designation, Principal Amount and Interest Rate.
	  	 	3	 
	Section 202.	 	 Denominations.
	  	 	3	 
	Section 203.	 	 Computation of Interest.
	  	 	3	 
	Section 204.	 	 Forms Generally.
	  	 	3	 
	Section 205.	 	 Form of Trustee’s Certificate of Authentication
	  	 	11	 
	Section 206.	 	 Maintenance of Office or Agency.
	  	 	12	 
	Section 207.	 	 New York Stock Exchange Listing.
	  	 	12	 
			
		 	ARTICLE THREE MISCELLANEOUS PROVISIONS	  			
			
	Section 301.	 	 Consent to Service; Jurisdiction.
	  	 	12	 
	Section 302.	 	 Governing Law; Waiver of Jury Trial.
	  	 	12	 
	Section 303.	 	 Separability of Invalid Provisions.
	  	 	13	 
	Section 304.	 	 Execution in Counterparts.
	  	 	13	 
	Section 305.	 	 Certain Matters.
	  	 	13	 













 SECOND SUPPLEMENTAL INDENTURE, dated as of April 22, 2019 (this “Second
Supplemental Indenture”), among América Móvil, S.A.B. de C.V. (the “Company”), a sociedad anónima bursátil de capital variable organized and existing under the laws of the United Mexican
States (“Mexico”), having its principal office at Lago Zurich 245, Plaza Carso, Edificio Telcel, Colonia Ampliación Granada, Miguel Hidalgo, 11529, Mexico City, Mexico, Citibank, N.A., a national banking association, as
Trustee (the “Trustee”), Registrar and Transfer Agent, and Citibank, N.A., London Branch, a national banking association, as Paying Agent (the “Paying Agent”), to the Indenture, dated as of October 1, 2018,
among the Company, the Trustee and the Paying Agent (the “Base Indenture”). The Base Indenture, together with this Second 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 Second Supplemental Indenture to
create a series of Securities to be issued under the Base Indenture, as supplemented by this Second Supplemental Indenture, and to be known as the Company’s “4.375% Senior Notes due 2049” (the “Notes”), which are to
be initially limited in aggregate principal amount as specified in this Second Supplemental Indenture and the terms and provisions of which are to be as specified in this Second Supplemental Indenture; 

WHEREAS, the Company has duly authorized the execution and delivery of this Second 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 Second 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 and the Paying 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 Second Supplemental Indenture, is in all respects ratified and confirmed, and the Base Indenture and this Second 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 Second Supplemental Indenture shall be bound hereby. Notwithstanding any other provision of this Section 101 or the Base Indenture or
this Second Supplemental Indenture to the contrary, to the extent any provisions of this Second Supplemental Indenture or any Notes issued hereunder shall conflict with 












 
any provision of the Base Indenture, the provisions of this Second Supplemental Indenture or such Notes, as applicable, shall govern. 

 

	Section 102.	 Definitions. 



For all purposes of this Second 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 Second Supplemental Indenture; 
 (b) the words “herein,” “hereof” and
“hereunder” and other words of similar import refer to this Second Supplemental Indenture as a whole and not to any particular Article, Section or other subdivision; 

(c) 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; 
 (d)    all terms used in this Second Supplemental
Indenture and not defined herein have the meanings assigned to them in the Base Indenture; 
 (e)    the following terms
have the meanings given to them in this Section 102(e). 
 “Depositary” means The Depository Trust Company
(“DTC”), 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. 

“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 Depositary for such Notes or a nominee thereof. 
 “Interest Payment Date” means April 22 and
October 22 of each year, commencing on October 22, 2019. 
 “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. 

“U.S. Dollar” and “U.S.$” mean a U.S. dollar or other equivalent unit in such coin or currency of the United
States of America as at the time shall be legal tender for the payment of public and private debts. 

  
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 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 “4.375% Senior Notes due
2049,” initially in an aggregate principal amount of U.S.$1,250,000,000 (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. 
 (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 April 22, 2049. The Notes shall bear interest at the rate of 4.375% per annum from April 22, 2019 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 April 22 and October 22, commencing on October 22, 2019, 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 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. 
  

	Section 202.	 Denominations. 



The Notes shall be issued only in denominations of U.S.$200,000 and integral multiples of U.S.$1,000 in excess thereof. 

 

	Section 203.	 Computation of Interest. 



Interest on the Notes shall be computed at a fixed rate on the basis of a 360-day year of twelve 30-day months. 
  

	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 Second 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.” 

  
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 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 Depositary, or its nominee, and deposited with the Trustee, at its
Corporate Trust Office, as custodian for the 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 Depositary. 
 (a)    Form of Face of Note. 

[INCLUDE IF NOTE IS A GLOBAL NOTE—THIS SECURITY IS A GLOBAL NOTE WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO, AS
SUPPLEMENTED BY THE SECOND SUPPLEMENTAL INDENTURE HEREINAFTER REFERRED TO, AND IS REGISTERED IN THE NAME OF THE DEPOSITARY OR A NOMINEE OF THE DEPOSITARY, WHICH MAY BE TREATED BY AMÉRICA MÓVIL, S.A.B. DE C.V., THE TRUSTEE AND ANY AGENT
THEREOF AS OWNER AND HOLDER OF THIS NOTE FOR ALL PURPOSES.] 
 [INCLUDE IF NOTE IS A GLOBAL NOTE AND THE DEPOSITARY IS THE DEPOSITORY
TRUST COMPANY— UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (“DTC”) TO AMÉRICA MÓVIL, S.A.B. DE C.V. OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY CERTIFICATE ISSUED IN EXCHANGE FOR THIS CERTIFICATE OR ANY PORTION HEREOF IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON OTHER THAN DTC OR A NOMINEE THEREOF IS WRONGFUL INASMUCH AS THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 
 UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR REGISTERED
NOTES IN DEFINITIVE REGISTERED FORM IN THE LIMITED CIRCUMSTANCES REFERRED TO IN THE INDENTURE, AS SUPPLEMENTED BY THIS SECOND SUPPLEMENTAL INDENTURE, THIS GLOBAL NOTE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE
DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY.] 

AMÉRICA MÓVIL, S.A.B. DE C.V. 

4.375% Senior Notes due 2049 
 CUSIP
Number: 02364W BG9 / ISIN: US02364WBG96 / Common Code: 198582441 
  

			
	No.	  	U.S.$                

 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 

  
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organized and existing under the laws of the United Mexican States (“Mexico”), for value received, hereby promises to pay to Cede & Co., or registered assigns, the
principal sum of                U.S. Dollars, as revised by the Schedule of Increases and Decreases in Global Note attached hereto, on April 22, 2049 (unless
earlier redeemed, in which case, on the applicable Redemption Date) and to pay interest thereon from April 22, 2019 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 April 22 and October 22 of each year, commencing on October 22, 2019 at the rate of 4.375% 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. All capitalized terms used in this Note which are defined in the Indenture and not otherwise defined herein
shall have the meanings assigned to them in the Indenture. 
 Interest on the Notes shall be calculated at a fixed rate on the basis of a 360-day year of twelve 30-day months. 
 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 close of business on April 7 or October 7 immediately preceding the related Interest Payment Date (whether or not a Business Day). 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 by the Trustee 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 Corporate Trust Office of the Paying Agent
or the agency of the Company in the Borough of Manhattan, The City of New York, New York maintained for such purpose and at any other office or agency maintained by the Company for such purpose, in U.S. Dollars against surrender of this Note in the
case of any payment due at the Maturity of the principal thereof; 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 Register; and provided, further, that all payments of the principal of and interest on this Note, the Permitted Holders of which have given wire transfer instructions to the Trustee in writing, the Company, or its agent at least 10
Business Days prior to the applicable payment date, shall be required to be made by wire transfer of immediately available funds to the accounts specified by such Permitted Holders in such instructions. [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.] 

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. 

  
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 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:


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

Dated: 
  

			
	CITIBANK, N.A.,
	 as Trustee

		
	By:	 	 
		 	Authorized Officer


 (b)    Form of Reverse of Note. 

This Note is one of a duly authorized issue of securities of the Company (the “Notes”), issued under the Indenture, dated as
of October 1, 2018 (the “Base Indenture”), among the Company, Citibank, N.A., as Trustee (the “Trustee,” which term includes any successor trustee under the Indenture), Registrar and Transfer Agent, and
Citibank, N.A., London Branch, as Paying Agent (the “Paying Agent”), as supplemented by the Second Supplemental Indenture, dated as of April 22, 2019 (the “Second Supplemental Indenture” and, together with the Base
Indenture, the “Indenture”) among the Company, the Trustee and the Paying 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. 

  
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 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, the date on which interest will 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 will 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 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 the 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. 

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”). To
the extent Mexican Taxes are required to be withheld or deducted from any such payment, the Company shall pay, as provided for in and subject to the exceptions set forth in the Indenture, such additional amounts (“Additional
Amounts”) as may be necessary to ensure that the net amount actually received by the Holder after such withholding or deduction (including any Mexican Taxes payable in respect of Additional Amounts) is equal to the amount that the Holder
would have received had no such withholding or deduction been required. 
 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 or thereof shall not be construed as excluding reference to Additional Amounts in those provisions hereof or thereof 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, 

  
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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 and, only in the case
of clauses (ii) and (iii) below, from time to time: 
 (i)    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) any accrued and unpaid interest thereon to the Redemption Date, (C) any premium applicable in the case of redemption prior to Maturity and (D) 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 April 22, 2019, the Company would be obligated, after taking such measures as the Company may consider reasonable 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 pursuant to this clause
(i) may be given earlier than 90 days prior to the earliest date on which the Company would but for such redemption 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; 
 (ii)     prior to
the Par Call Date, in whole or in part, at a Redemption Price equal to the greater of (1) 100% of the outstanding principal amount of the Notes being redeemed and (2) the sum of the present values of the Remaining Payments, discounted to the
Redemption Date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 25 basis points, plus, in the case of
(1) and (2), accrued and unpaid interest on the principal amount of the Notes being redeemed to the Redemption Date; and 

(iii)    on or after the Par Call Date, in whole or in part, at a Redemption Price equal to 100% of the principal amount of
the Notes being redeemed, plus accrued and unpaid interest on the outstanding principal amount of the Notes being redeemed to the Redemption Date. 

For purposes of clauses (ii) and (iii) above, the following terms shall have the specified meanings: 

“Par Call Date” means, October 22, 2048 (the date that is six months prior to the stated maturity of the Notes). 

  
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 “Treasury Rate” means, with respect to any Redemption Date, the rate per annum
equal to the semi-annual equivalent yield to maturity or interpolated maturity (on a day count basis) of the Comparable Treasury Issue, assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to
the Comparable Treasury Price (as defined below) for such Redemption Date. 
 “Comparable Treasury Issue” means the United States
Treasury security or securities selected by an Independent Investment Banker as having an actual or interpolated maturity comparable to the Par Call Date of the Notes to be redeemed that would be utilized, at the time of selection and in accordance
with customary financial practice, in pricing new issues of corporate debt securities of a comparable maturity to the Par Call Date of the Notes to be redeemed. 

“Independent Investment Banker” means one of the Reference Treasury Dealers appointed by the Company. 

“Comparable Treasury Price” means, with respect to any Redemption Date, (1) the arithmetic average of the Reference Treasury
Dealer Quotations for such Redemption Date, after excluding the highest and lowest such Reference Treasury Dealer Quotation or (2) if the Independent Investment Banker obtains fewer than four such Reference Treasury Dealer Quotations, the
arithmetic average of all such quotations. 
 “Reference Treasury Dealer” means Citigroup Global Markets Inc., Morgan
Stanley & Co. LLC, Barclays Capital Inc. and Merrill Lynch Fenner & Smith Incorporated or their respective affiliates which are primary United States government securities dealers and at least one additional leading primary United
States government securities dealers in New York City reasonably designated by the Company; provided, however, that if any of the foregoing shall cease to be a primary United States government securities dealer in New York City (a
“Primary Treasury Dealer”), the Company will substitute therefor another Primary Treasury Dealer. 
 “Reference Treasury
Dealer Quotation” means, with respect to each Reference Treasury Dealer and any Redemption Date, the average, as determined by the Independent Investment Banker, of the bid and asked prices for the Comparable Treasury Issue (expressed in each
case as a percentage of its principal amount) quoted in writing to the Independent Investment Banker by such Reference Treasury Dealer at 3:30 p.m. (New York City time) on the third Business Day preceding such Redemption Date. 

“Remaining Payments” means, the remaining payments of principal of, and interest on, the Notes that would be due after the related
Redemption Date as if the Notes were redeemed on the Par Call Date. If such Redemption Date is not an interest payment date with respect to the Notes, the amount of the next succeeding scheduled interest payment on the Notes will be reduced by the
amount of interest accrued on the Notes to such Redemption Date. 
 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, to be affected under the Indenture 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, 

  
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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 hereof 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 and/or
security 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 and/or security. 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 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 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 U.S.$200,000 and integral multiples of
U.S.$1,000 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. 
 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. 

  
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 [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 and not otherwise defined herein 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 law: 
  

					
	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
 Registrar

	  
	  		  		  		  	
		  	  
	  	  
	  	  
	  	  


  

	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: 
  

			
	Citibank, N.A.,
	
	 as Trustee

		
	By:	 	 
		 	Authorized Officer



  
 11 














	Section 206.	 Maintenance of Office or Agency. 



In the case of 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 an office or agency, in each case, in accordance with Section 1002 of the Base Indenture. 
  

	Section 207.	 New York Stock Exchange Listing. 



The Company shall apply to list the Notes on the New York Stock Exchange; provided, however, that the Company will not be required to
maintain such admission to listing, if obtained. 
 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 Second Supplemental Indenture, the Base
Indenture or the Notes may be instituted in any U.S. federal or New York state court in the Borough of Manhattan, The City of 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, 28 Liberty Street, New York, New York 10005, as its authorized agent upon which process may be served in any legal suit, action or proceeding arising out of or relating to this Second Supplemental Indenture, the Base
Indenture or the Notes which may be instituted in any U.S. federal or New York state court in the Borough of Manhattan, The City of New York, New York, and agrees that service of process upon such agent, and written notice, or notice in any other
manner permitted by applicable law, of such service to the Company by the Person serving the same, 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 will 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. 

  
 12 














	Section 302.	 Governing Law; Waiver of Jury Trial. 



(a)    THIS SECOND 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
SECOND 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 Second 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 Second Supplemental Indenture, and to the extent and only to the extent that any such provision is invalid, illegal or unenforceable,
this Second Supplemental Indenture shall be construed as if such provision had never been contained herein. 
  

	Section 304.	 Execution in Counterparts. 



This Second 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 and the Paying Agent shall not be responsible in any manner whatsoever for or in respect of the
validity or sufficiency of this Second 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 shall be provided with any rights, benefits,
protections, indemnities and immunities afforded to it pursuant to the Base Indenture. The rights, privileges, protections, immunities and benefits given to the Trustee hereunder and under the Base Indenture are extended to, and shall be enforceable
by, the Paying Agent. 
 [Signature page follows] 

  
 13 













 IN WITNESS WHEREOF, the parties hereto have caused this Second 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


 [Signature page to Second Supplemental Indenture – April 2019 USD Takedown] 












 
			
	CITIBANK, N.A.,
	 as Trustee, Registrar and Transfer Agent

		
	By:	 	/s/ James Polcari
		 	Name:  James Polcari
		 	Title:    Senior Trust Officer


  

			
	CITIBANK, N.A.,
	LONDON BRANCH, as Paying Agent
		
	By:	 	/s/ Beth Kuhn
		 	Name:  Beth Kuhn
		 	Title:    Vice President


 [Signature page to Second Supplemental Indenture – April 2019 USD Takedown]