# EDGAR Filing Document

**Accession Number:** 0001129137
**File Stem:** 0001140361-25-023071
**Filing Date:** 2025-6
**Character Count:** 96511
**Document Hash:** 4531e255d3ad82b178c2de7da3dde331
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001140361-25-023071.hdr.sgml**: 20250620

**ACCESSION NUMBER**: 0001140361-25-023071

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 6

**CONFORMED PERIOD OF REPORT**: 20250620

**FILED AS OF DATE**: 20250620

**DATE AS OF CHANGE**: 20250620

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMERICA MOVIL SAB DE CV/
- **CENTRAL INDEX KEY:** 0001129137
- **STANDARD INDUSTRIAL CLASSIFICATION:** TELEPHONE COMMUNICATIONS (NO RADIO TELEPHONE) [4813]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** O5
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-16269
- **FILM NUMBER:** 251059501

**BUSINESS ADDRESS:**
- **STREET 1:** LAGO ZURICH 245
- **STREET 2:** COLONIA GRANADA AMPLIACION
- **CITY:** MEXICO DF
- **STATE:** O5
- **ZIP:** 11529
- **BUSINESS PHONE:** 5255-2581-4449

**MAIL ADDRESS:**
- **STREET 1:** LAGO ZURICH 245
- **STREET 2:** COLONIA GRANADA AMPLIACION
- **CITY:** MEXICO DF
- **STATE:** O5
- **ZIP:** 11529

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMERICA MOVIL SA DE CV/
- **DATE OF NAME CHANGE:** 20010119

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMERICA  MOBILE
- **DATE OF NAME CHANGE:** 20001221

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMERICAN MOBILE
- **DATE OF NAME CHANGE:** 20001215

*Execution version*

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### <br>

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### FORM 6-K

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#### REPORT OF A FOREIGN PRIVATE ISSUER

#### PURSUANT TO RULE 13a-16 OR 15d-16

#### UNDER THE SECURITIES EXCHANGE ACT OF 1934

#### For the month of June 2025

#### Commission File Number: 1-16269

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## AMÉRICA MÓVIL, S.A.B. DE C.V.

#### (Exact Name of the Registrant as Specified in its Charter)

#### <br>

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#### America Mobile
(Translation of Registrant's name into English)

#### Lago Zurich 245

#### Plaza Carso / Edificio Telcel, Piso 16

#### Colonia Ampliación Granada, Alcaldía Miguel Hidalgo

#### 11529, Mexico City

#### Mexico
(Address of principal executive office)

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Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

#### This Report on Form 6-K shall be deemed incorporated by reference into the Registrant's
**Registration Statement on Form F-3ASR (File No. 333-**287731).

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#### EXHIBITS

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| | |
|:---|:---|
| Pricing Agreement, dated June 16, 2025 (incorporating the Underwriting Agreement—Standard Provisions dated October 1, 2018) among América Móvil, S.A.B. de C.V., as Issuer, and BBVA Securities Inc., Goldman Sachs & Co. LLC, Morgan Stanley & Co. LLC, HSBC Securities (USA) Inc. and Scotia Capital (USA) Inc., as Underwriters.<br>| [Exhibit 1.1](ef20050807_ex1-1.htm) |
| Ninth Supplemental Indenture, dated as of June 20, 2025, among América Móvil, S.A.B. de C.V., as Issuer, Citibank, N.A., as trustee, registrar and transfer agent, and Citibank, N.A., London Branch, as paying and authenticating agent, relating to the 5.000% Senior Notes due 2033.<br>| [Exhibit 4.1](ef20050807_ex4-1.htm) |
| Specimen of Global Notes representing the 5.000% Senior Notes due 2033.<br>| [Exhibit 4.2](ef20050807_ex4-2.htm) |
| Opinion of Cleary Gottlieb Steen & Hamilton LLP, dated June 20, 2025.<br>| [Exhibit 5.1](ef20050807_ex5-1.htm) |
| Opinion of Bufete Robles Miaja, S.C., dated June 20, 2025.<br>| [Exhibit 5.2](ef20050807_ex5-2.htm) |
| Consent of Cleary Gottlieb Steen & Hamilton LLP (included in Exhibit 5.1).<br>| [Exhibit 23.1](ef20050807_ex5-1.htm) |
| Consent of Bufete Robles Miaja, S.C. (included in Exhibit 5.2).<br>| [Exhibit 23.2](ef20050807_ex5-2.htm) |

---

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#### SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

---

| | | |
|:---|:---|:---|
| Date: June 20, 2025 |  |  |
|  |  | **AMÉRICA MÓVIL, S.A.B. DE C.V.** |
|  | By: | /s/Carlos José García Moreno Elizondo |
|  | Name: | Carlos José García Moreno Elizondo |
|  | Title: | Chief Financial Officer |

---

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## Exhibit 4.1

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**Exhibit 4.1**<br>

*Execution version*

** 

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 and Authenticating Agent* <br>

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#### Ninth Supplemental Indenture

*Dated as of June 20, 2025*

------

U.S.$500,000,000

5.000% Senior Notes due 2033

------

#### **TABLE OF CONTENTS**
**

<br> ---

| | | |
|:---|:---|:---|
|  |  | *Page* |
| ARTICLE ONE DEFINITIONS | ARTICLE ONE DEFINITIONS |  |
| Section 101. | Provisions of the Base Indenture. | 1 |
| Section 102. | Definitions. | 2 |
| ARTICLE TWO GENERAL TERMS AND CONDITIONS OF THE NOTES | ARTICLE TWO GENERAL TERMS AND CONDITIONS OF THE NOTES |  |
| Section 201. | Designation, Principal Amount and Interest Rate. | 3 |
| Section 202. | Authenticating Agent. | 3 |
| Section 203. | Denominations. | 3 |
| Section 204. | Computation of Interest. | 3 |
| Section 205. | Forms Generally. | 3 |
| Section 206. | Form of Authenticating Agent's Certificate of Authentication. | 12 |
| Section 207. | Maintenance of Office or Agency. | 12 |
| Section 208. | New York Stock Exchange Listing. | 12 |
| ARTICLE THREE MISCELLANEOUS PROVISIONS | ARTICLE THREE MISCELLANEOUS PROVISIONS |  |
| Section 301. | Consent to Service; Jurisdiction. | 12 |
| Section 302. | Governing Law; Waiver of Jury Trial. | 13 |
| Section 303. | Separability of Invalid Provisions. | 13 |
| Section 304. | Execution in Counterparts. | 13 |
| Section 305. | Certain Matters. | 13 |

---

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NINTH SUPPLEMENTAL INDENTURE, dated as of June 20, 2025 (this "<u>Ninth</u> <u>Supplemental Indenture</u>"), among América Móvil, S.A.B. de C.V. (the "<u>Company</u>"), a *sociedad anónima bursátil de capital variable* organized and existing under the laws of the United Mexican States ("<u>Mexico</u>"), having its principal office at Lago Zurich 245, Plaza Carso, Edificio Telcel, Colonia Ampliación Granada, Alcaldía Miguel Hidalgo, 11529, Mexico City, Mexico, Citibank, N.A., a national banking association, as Trustee (the "<u>Trustee</u>"), Registrar and Transfer Agent, and Citibank, N.A., London Branch, a national banking association, as Paying Agent (in such capacity, the "<u>Paying Agent</u>") and Authenticating Agent (in such capacity, the "<u>Authenticating Agent</u>"), to the Indenture, dated as of October 1, 2018, among the Company, the Trustee and the Paying Agent (the "<u>Base Indenture</u>"). The Base Indenture, together with this Ninth Supplemental Indenture, is herein referred to as the "<u>Indenture</u>."

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 Ninth Supplemental Indenture to create a series of Securities to be issued under the Base Indenture, as supplemented by this Ninth Supplemental Indenture, and to be known as the Company's "5.000% Senior Notes due 2033" (the "<u>Notes</u>"), which are to be initially limited in aggregate principal amount as specified in this Ninth Supplemental Indenture and the terms and provisions of which are to be as specified in this Ninth Supplemental Indenture;

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

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Section 102. *Definitions.*

For all purposes of this Ninth Supplemental Indenture and the Notes, except as otherwise expressly provided or unless the subject matter or context otherwise requires:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; any reference to an "<u>Article</u>" or a "<u>Section</u>" refers to an Article or Section, as the case may be, of this Ninth Supplemental Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the words "<u>herein</u>," "<u>hereof</u>" and "<u>hereunder</u>" and other words of similar import refer to this Ninth Supplemental Indenture as a whole and not to any particular Article, Section or other subdivision;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the term "<u>Securities</u>," 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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; all terms used in this Ninth Supplemental Indenture and not defined herein have the meanings assigned to them in the Base Indenture;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(e)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; the following terms have the meanings given to them in this Section 102(e).

"<u>Depositary</u>" 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.

"<u>Global Note</u>" 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.

"<u>Interest Payment Date</u>" means January 20 and July 20 of each year, commencing on January 20, 2026.

"<u>Predecessor Note</u>" 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>U.S. Dollar</u>" and "<u>U.S.$</u>" 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

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| | |
|:---|:---|
| Section 201. | *Designation, Principal Amount and Interest Rate.* |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; There is hereby authorized and established a series of Securities designated the "5.000% Senior Notes due 2033," initially in an aggregate principal amount of U.S.$500,000,000 (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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Stated Maturity of the Notes shall be January 20, 2033. The Notes shall bear interest at the rate of 5.000% per annum from June 20, 2025, 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 January 20 and July 20, commencing on January 20, 2026, 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. *Authenticating Agent.*

The Trustee hereby appoints Citibank, N.A., London Branch, as Authenticating Agent with respect to the Notes pursuant to Section 614 of the Base Indenture.

Section 203. *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 204. *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 205. *Forms Generally.*

The Notes shall be in substantially the forms set forth in this Section 205, with such appropriate insertions, omissions, substitutions and other variations as are required or permitted by this Ninth 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 205, 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 205. 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 Authenticating Agent 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.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *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 NINTH 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 NINTH 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.]

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#### AMÉRICA MÓVIL, S.A.B. DE C.V.

#### 5.000% Senior Notes due 2033
CUSIP Number: 02364W BM6 / ISIN: US02364WBM64

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| | |
|:---|:---|
| No.  | U.S.$|

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América Móvil, S.A.B. de C.V. (the "<u>Company</u>," 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 ("<u>Mexico</u>"), 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 January 20, 2033 (unless earlier redeemed, in which case, on the applicable Redemption Date) and to pay interest thereon from June 20, 2025 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 January 20 and July 20 of each year, commencing on January 20, 2026 at the rate of 5.000% 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 January 5 or July 5 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.]

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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 Authenticating Agent referred to on the reverse hereof by manual or electronic 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.

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| | | |
|:---|:---|:---|
| Dated: |  |  |
|  | AMÉRICA MÓVIL, S.A.B. DE C.V. | AMÉRICA MÓVIL, S.A.B. DE C.V. |
|  | By: |  |
|  |  | Name: |
|  |  | Title: |
|  | By: |  |
|  |  | Name: |
|  |  | Title: |

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

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| | | |
|:---|:---|:---|
| Dated: |  |  |
|  | CITIBANK, N.A., London Branch | CITIBANK, N.A., London Branch |
|  |  | as Authenticating Agent |
|  | By: |  |
|  |  | Authorized Officer |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *Form of Reverse of Note*.

This Note is one of a duly authorized issue of securities of the Company (the "<u>Notes</u>"), issued under the Indenture, dated as of October 1, 2018 (the "<u>Base Indenture</u>"), among the Company, Citibank, N.A., as Trustee (the "<u>Trustee</u>," which term includes any successor trustee under the Indenture), Registrar and Transfer Agent, and Citibank, N.A., London Branch, as Paying Agent (the "<u>Paying Agent</u>"), as supplemented by the Ninth Supplemental Indenture, dated as of June 20, 2025 (the "<u>Ninth Supplemental Indenture</u>" and, together with the Base Indenture, the "<u>Indenture</u>") among the Company, the Trustee and the Paying Agent and Authenticating 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 ("<u>Mexican Taxes</u>"). 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 in the form of additional interest ("Additional Interest") 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 Interest) 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 Interest, 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 Interest (or Additional Amounts) in any provision hereof or thereof shall not be construed as excluding reference to Additional Interest (or Additional Amounts) in those provisions hereof or thereof where such express mention is not made.

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In the event that Additional Interest actually paid with respect to the Notes pursuant to the preceding paragraphs is 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 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 as provided below in the following clauses (i) and (ii) upon the terms set forth in Section 1101 of the Base Indenture:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Company may, at its option, redeem the Notes upon not less than 30 nor more than 60 days' notice, 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 and (C) any Additional Interest 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 June 20, 2025, the Company would be obligated, after taking such measures as the Company may consider reasonable to avoid such requirement, to pay Additional Interest in excess of the Additional Interest 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 Interest 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 Interest remains in effect;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Company may, at its option, redeem the Notes upon not less than 10 nor more than 60 days' notice, at any time, or from time to time:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A) prior to the Par Call Date, in whole or in part, at a Redemption Price equal to the greater of (1)(a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the Redemption Date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 15 basis points less (b) interest accrued to the Redemption Date and (2) 100% of the principal amount of the Notes to be redeemed, 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

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B) 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 the preceding clause (ii), the following terms shall have the specified meanings:

"<u>Par Call Date</u>" means November 20, 2032 (the date that is two months prior to the stated maturity of the Notes).

"<u>Treasury Rate</u>" means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m. (New York City time) (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third Business Day preceding the Redemption Date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as "Selected Interest Rates (Daily) - H.15" (or any successor designation or publication) ("H.15") under the caption "U.S. government securities–Treasury constant maturities–Nominal" (or any successor caption or heading). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to the Par Call Date (the "Remaining Life"); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields – one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life – and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the redemption date.

If on the third Business Day preceding the redemption date H.15 or any successor designation or publication is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m. (New York City time) on the second Business Day preceding such Redemption Date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m. (New York City time). In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m. (New York City time) of such United States Treasury security, and rounded to three decimal places.

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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, 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.

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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 and not otherwise defined herein shall have the meanings assigned to them in the Indenture.

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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— <u><br> </u>

<br>(Cust)

TEN ENT -&nbsp;&nbsp;&nbsp;&nbsp; as tenants by the entireties Custodian <br> <u><br> </u> under Uniform

<br>(Minor)

JT TEN - <br> as joint tenants with right Gifts to Minors Act <u><br> </u> <br>of survivorship and not as <br> &nbsp;&nbsp;&nbsp;&nbsp; (State) <br> tenants in common

Additional abbreviations may also be used though not in the above list.

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#### <br>

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

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| | | | | |
|:---|:---|:---|:---|:---|
| Date of<br> transfer or <br> exchange | Amount of decrease<br> in principal amount<br> of this Global Note | Amount of increase<br> in principal amount <br> of this Global Note | Principal amount of <br> this Global Note <br> following such <br> decrease or increase | Signature of <br> authorized signatory <br> of Trustee or <br> Registrar |

---

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Section 206. *Form of Authenticating Agent'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: |  |  |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Citibank, N.A., London Branch <br> as Authenticating Agent | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Citibank, N.A., London Branch <br> as Authenticating Agent |
|  | By: |  |
|  |  | Authorized Officer |

---

Section 207. *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 208. *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 Ninth 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 C T 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 Ninth 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 C T Corporation System specified above and any domicile C T Corporation System may have in the future as its domicile to receive any notice hereunder (including service of process). If for any reason C T 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.

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Section 302. *Governing Law; Waiver of Jury Trial.*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **THIS NINTH SUPPLEMENTAL INDENTURE AND THE NOTES SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 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 NINTH 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 Ninth 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 Ninth Supplemental Indenture, and to the extent and only to the extent that any such provision is invalid, illegal or unenforceable, this Ninth Supplemental Indenture shall be construed as if such provision had never been contained herein.

Section 304. *Execution in Counterparts.*

This Ninth Supplemental Indenture may be simultaneously executed and delivered in any number of counterparts, each of which, when executed and delivered, shall constitute a duplicate original, but all counterparts together shall constitute a single agreement. Counterparts may be delivered via facsimile, electronic mail (including any electronic signature covered by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic Signatures and Records Act or other applicable law, *e.g.*, *www.docusign.com*) or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

Section 305. *Certain Matters.*

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 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 Ninth Supplemental Indenture or for or in respect of the recitals contained herein, all of which are made solely by the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 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 pages follow*]

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

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| | | |
|:---|:---|:---|
| AMÉRICA MÓVIL, S.A.B. DE C.V.,  | AMÉRICA MÓVIL, S.A.B. DE C.V.,  | AMÉRICA MÓVIL, S.A.B. DE C.V.,  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; as Issuer | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; as Issuer | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; as Issuer |
| By: | /s/Carlos José García Moreno Elizondo | /s/Carlos José García Moreno Elizondo |
|  | Name: | Carlos José García Moreno Elizondo |
|  | Title: | Chief Financial Officer |
| By: | /s/Alejandro Cantú Jiménez | /s/Alejandro Cantú Jiménez |
|  | Name: | Alejandro Cantú Jiménez |
|  | Title: | General Counsel |

---

[*Signature page to Ninth Supplemental Indenture*]

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CITIBANK, N.A., <br> as Trustee, Registrar and Transfer Agent <br>

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| | | |
|:---|:---|:---|
| By: | /s/Eva Waite | /s/Eva Waite |
|  | Name: | Eva Waite |
|  | Title: | Senior Trust Officer |

---

---

| | | |
|:---|:---|:---|
| CITIBANK, N.A., | CITIBANK, N.A., | CITIBANK, N.A., |
| LONDON BRANCH, as Paying and Authenticating Agent | LONDON BRANCH, as Paying and Authenticating Agent | LONDON BRANCH, as Paying and Authenticating Agent |
| By: | /s/Viola Japaul | /s/Viola Japaul |
|  | Name: | Viola Japaul |
|  | Title: | Director |

---

[*Signature page to Ninth Supplemental Indenture*]

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## Exhibit 4.2

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#### Exhibit 4.2<br>

[**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 NINTH 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 NINTH 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.]

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#### AMÉRICA MÓVIL, S.A.B. DE C.V.

#### 5.000% Senior Notes due 2033
CUSIP Number: 02364W BM6 / ISIN: US02364WBM64

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| | |
|:---|:---|
| No. | U.S.$ |

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América Móvil, S.A.B. de C.V. (the "<u>Company</u>," 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 ("<u>Mexico</u>"), 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 January 20, 2033 (unless earlier redeemed, in which case, on the applicable Redemption Date) and to pay interest thereon from June 20, 2025 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 January 20 and July 20 of each year, commencing on January 20, 2026 at the rate of 5.000% 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 January 5 or July 5 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.]

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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 Authenticating Agent referred to on the reverse hereof by manual or electronic 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.

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| | | |
|:---|:---|:---|
| Dated: |  |  |
|  | AMÉRICA MÓVIL, S.A.B. DE C.V. | 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.

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| | | |
|:---|:---|:---|
| Dated: |  |  |
|  | CITIBANK, N.A., London Branch | CITIBANK, N.A., London Branch |
|  |  | as Authenticating Agent |
|  | By: |  |
|  |  | Authorized Officer |

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *Form of Reverse of Note*.

This Note is one of a duly authorized issue of securities of the Company (the "<u>Notes</u>"), issued under the Indenture, dated as of October 1, 2018 (the "<u>Base Indenture</u>"), among the Company, Citibank, N.A., as Trustee (the "<u>Trustee</u>," which term includes any successor trustee under the Indenture), Registrar and Transfer Agent, and Citibank, N.A., London Branch, as Paying Agent (the "<u>Paying Agent</u>"), as supplemented by the Ninth Supplemental Indenture, dated as of June 20, 2025 (the "<u>Ninth Supplemental Indenture</u>" and, together with the Base Indenture, the "<u>Indenture</u>") among the Company, the Trustee and the Paying Agent and Authenticating 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 ("<u>Mexican Taxes</u>"). 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 in the form of additional interest ("Additional Interest") 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 Interest) 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 Interest, 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 Interest (or Additional Amounts) in any provision hereof or thereof shall not be construed as excluding reference to Additional Interest (or Additional Amounts) in those provisions hereof or thereof where such express mention is not made.

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In the event that Additional Interest actually paid with respect to the Notes pursuant to the preceding paragraphs is 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 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 as provided below in the following clauses (i) and (ii) upon the terms set forth in Section 1101 of the Base Indenture:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Company may, at its option, redeem the Notes upon not less than 30 nor more than 60 days' notice, 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 and (C) any Additional Interest 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 June 20, 2025, the Company would be obligated, after taking such measures as the Company may consider reasonable to avoid such requirement, to pay Additional Interest in excess of the Additional Interest 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 Interest 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 Interest remains in effect;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The Company may, at its option, redeem the Notes upon not less than 10 nor more than 60 days' notice, at any time, or from time to time:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(A) prior to the Par Call Date, in whole or in part, at a Redemption Price equal to the greater of (1)(a) the sum of the present values of the remaining scheduled payments of principal and interest thereon discounted to the Redemption Date (assuming the Notes matured on the Par Call Date) on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the Treasury Rate plus 15 basis points less (b) interest accrued to the Redemption Date and (2) 100% of the principal amount of the Notes to be redeemed, 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

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(B) 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 the preceding clause (ii), the following terms shall have the specified meanings:

"<u>Par Call Date</u>" means November 20, 2032 (the date that is two months prior to the stated maturity of the Notes).

"<u>Treasury Rate</u>" means, with respect to any Redemption Date, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate shall be determined by the Company after 4:15 p.m. (New York City time) (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third Business Day preceding the Redemption Date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as "Selected Interest Rates (Daily) - H.15" (or any successor designation or publication) ("H.15") under the caption "U.S. government securities–Treasury constant maturities–Nominal" (or any successor caption or heading). In determining the Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to the Par Call Date (the "Remaining Life"); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields – one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life – and shall interpolate to the Par Call Date on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the redemption date.

If on the third Business Day preceding the redemption date H.15 or any successor designation or publication is no longer published, the Company shall calculate the Treasury Rate based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m. (New York City time) on the second Business Day preceding such Redemption Date of the United States Treasury security maturing on, or with a maturity that is closest to, the Par Call Date, as applicable. If there is no United States Treasury security maturing on the Par Call Date but there are two or more United States Treasury securities with a maturity date equally distant from the Par Call Date, one with a maturity date preceding the Par Call Date and one with a maturity date following the Par Call Date, the Company shall select the United States Treasury security with a maturity date preceding the Par Call Date. If there are two or more United States Treasury securities maturing on the Par Call Date or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m. (New York City time). In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices (expressed as a percentage of principal amount) at 11:00 a.m. (New York City time) of such United States Treasury security, and rounded to three decimal places.

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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, 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.

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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.

[*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— <u><br> </u>

<br>(Cust)

TEN ENT -&nbsp;&nbsp;&nbsp;&nbsp; as tenants by the entireties Custodian <br> <u><br> </u> under Uniform

<br>(Minor)

JT TEN - <br> as joint tenants with right Gifts to Minors Act <u><br> </u> <br>of survivorship and not as <br> &nbsp;&nbsp;&nbsp;&nbsp; (State) <br> tenants in common

Additional abbreviations may also be used

though not in the above list.

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

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| | | | | |
|:---|:---|:---|:---|:---|
| 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 |

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9 <br>

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## Exhibit 5.1

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**Exhibit 5.1**<br>

**** 

<br> June 20, 2025

América Móvil, S.A.B. de C.V.

Lago Zurich 245

Plaza Carso / Edificio Telcel

Colonia Ampliación Granada

Miguel Hidalgo

11529, Mexico City

Mexico

Ladies and Gentlemen:

We have acted as special United States counsel to América Móvil, S.A.B. de C.V. (the "<u>Company</u>"), a corporation (*sociedad anónima bursátil de capital variable*) organized under the laws of the United Mexican States, in connection with the Company's offering pursuant to a registration statement on Form F-3 (File No. 333-287731) (the "<u>Registration Statement</u>") of U.S.$500,000,000 aggregate principal amount of its 5.500% Senior Notes due 2035 (the "<u>Securities</u>"), to be issued under an indenture, dated as of October 1, 2018 (the "<u>Base Indenture</u>"), among the Company, Citibank, N.A., as trustee (the "<u>Trustee</u>"), registrar and transfer agent, and Citibank, N.A., London Branch, as paying agent (the "<u>Paying Agent</u>"), as supplemented by the Ninth Supplemental Indenture, dated as of June 20, 2025 the (the "<u>Ninth Supplemental Indenture</u>") among the Company, the Trustee and the Paying Agent.

In arriving at the opinion expressed below, we have reviewed the Registration Statement, including the Base Indenture, which is filed as an exhibit thereto, and we have reviewed the Ninth Supplemental Indenture and the global notes representing the Securities, as executed by the Company and authenticated by the Trustee. In addition, we have reviewed the originals or copies certified or otherwise identified to our satisfaction of all such corporate records of the Company and such other documents, and we have made such investigations of law, as we have deemed appropriate as a basis for the opinion expressed below.

In rendering the opinion expressed below, we have assumed the authenticity of all documents submitted to us as originals and the conformity to the originals of all documents submitted to us as copies. In addition, we have assumed and have not verified the accuracy as to factual matters of each document we have reviewed.

Based on the foregoing, and subject to the further assumptions and qualifications set forth below, it is our opinion that the Securities are the valid, binding and enforceable obligations of the Company.

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América Móvil, S.A.B. de C.V., p. 2

Insofar as the foregoing opinion relates to the validity, binding effect or enforceability of any agreement or obligation of the Company, (a) we have assumed that the Company and each other party to such agreement or obligation has satisfied those legal requirements that are applicable to it to the extent necessary to make such agreement or obligation enforceable against it (except that no such assumption is made as to the Company regarding matters of the federal law of the United States of America or the law of the State of New York that in our experience normally would be applicable to general business entities with respect to such agreement or obligation), (b) such opinion is subject to applicable bankruptcy, insolvency and similar laws affecting creditors' rights generally, to general principles of equity and to the effect of judicial application of foreign laws or foreign governmental actions affecting creditors' rights.

We express no opinion as to the subject matter jurisdiction of any United States federal court to adjudicate any action relating to the Base Indenture and the Ninth Supplemental Indenture or the Securities where jurisdiction based on diversity of citizenship under 28 U.S.C. §1332 does not exist.

We note that (a) the designation in Section 115 of the Base Indenture of the U.S. federal courts located in the Borough of Manhattan, The City of New York as the venue for actions or proceedings arising out of or relating to the Base Indenture or the Securities, the designation in Section 301 of the Ninth Supplemental Indenture of the U.S. federal courts located in the Borough of Manhattan, The City of New York as the venue for actions or proceedings arising out of or relating to the Ninth Supplemental Indenture, are (notwithstanding the waivers in Section 115 of the Base Indenture and Section 301 of each of the Ninth Supplemental Indenture) subject to the power of such courts to transfer actions pursuant to 28 U.S.C. §1404(a) or to dismiss such actions or proceedings on the grounds that such a federal court is an inconvenient forum for such an action or proceeding and (b) the enforceability in the United States of the waiver in Section 115 of the Base Indenture and Section 301 of the Ninth Supplemental Indenture by the Company of any immunity from jurisdiction or to service of process is subject to the limitations imposed by the United States Foreign Sovereign Immunities Act of 1976.

We express no opinion as to the enforceability of the judgment currency indemnities in Section 1010 of the Base Indenture.

The foregoing opinion is limited to the federal law of the United States of America and the law of the State of New York.

We hereby consent to the incorporation by reference of this opinion in the Registration Statement and to the reference to this firm in the prospectus constituting a part of the Registration Statement under the heading "*Validity of Securities*" and in any prospectus supplements related thereto under the heading "*Validity of Securities*" as counsel for the Company who have passed on the validity of the Securities being registered by the Registration Statement. In giving such consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission thereunder. We assume no obligation to advise you or any other person, or to make any investigations, as to any legal developments or factual matters arising subsequent to the date hereof that might affect the opinions expressed herein.

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América Móvil, S.A.B. de C.V., p. 2

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| | |
|:---|:---|
| Very truly yours, | Very truly yours, |
| CLEARY GOTTLIEB STEEN & HAMILTON LLP | CLEARY GOTTLIEB STEEN & HAMILTON LLP |
| By: | /s/Duane McLaughlin |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Duane McLaughlin, a Partner |

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## Exhibit 5.2

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**Exhibit 5.2**<br>

**** 

<br> ------

R O B L E S M I A J A

A B O G A D O S

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Bosque de Alisos 47 A-Piso 1 A2-11 TEL: +52 55 1105-1300 <br> Colonia Bosques de las Lomas México 05120, Ciudad de México WWW.ROBLESMIAJA.COM.MX

June 20, 2025

América Móvil, S.A.B. de C.V.

Lago Zurich 245

Plaza Carso / Edificio Telcel

Colonia Granada Ampliación

11529 Ciudad de México, México

Ladies and Gentlemen:

We have acted as special Mexican counsel to América Móvil, S.A.B. de C.V. (the "<u>Company</u>"), a corporation (*sociedad anónima bursátil de capital variable*) organized under the laws of the United Mexican States ("<u>Mexico</u>"), in connection with the Company's offering pursuant to a registration statement on Form F-3 (No. 333- 287731) of U.S.$500,000,000.00 aggregate principal amount of its 5.000% Senior Notes due 2033 (the "<u>Notes</u>") to be issued under the indenture, dated as of October 1, 2018 (the "<u>Base Indenture</u>"), among the Company, Citibank, N.A., as trustee (the "<u>Trustee</u>"), registrar and transfer agent, and Citibank, N.A., London Branch, as paying agent and authentication agent (the "<u>Paying Agent</u>" or the "<u>Authentication</u> <u>Agent</u>"), as supplemented by the Ninth Supplemental Indenture, dated as of June 20, 2025 (the "<u>Ninth Supplemental Indenture</u>"), among the Company, the Trustee, as trustee, registrar and transfer agent, and Citibank, N.A., London Branch, as paying agent. The Base Indenture as supplemented by the Ninth Supplemental Indenture is referred to herein as the "<u>Indenture</u>". Such registration statement, as amended as of its most recent effective date (June 16, 2025), insofar as it relates to the Notes (as determined for purposes of Rule 430B(f)(2) under the U.S. Securities Act of 1933, as amended (the "<u>Securities Act</u>")), including the documents incorporated by reference therein, but excluding Exhibit 25.1, is herein called the "<u>Registration Statement</u>"; the related prospectus, dated June 3, 2025, included in the Registration Statement filed with the U.S. Securities and Exchange Commission (the "<u>Commission</u>") under the Securities Act, including the documents incorporated by reference therein, is herein called the "<u>Base Prospectus</u>"; the preliminary prospectus supplement dated June 16, 2025 as filed with the Commission pursuant to Rule 424(b)(2) under the Securities Act, including the documents incorporated by reference therein, is herein called the "<u>Preliminary Prospectus Supplement</u>"; and the final prospectus supplement dated June 16, 2025, as filed with the Commission pursuant to Rule 424(b)(2) under the Securities Act, including the documents incorporated by reference therein, is herein called the "<u>Final Prospectus</u> <u>Supplement"</u>. The Base Prospectus and the Preliminary Prospectus Supplement together are herein called the "<u>Preliminary Prospectus</u>", and the Base Prospectus and the Final Prospectus Supplement together are herein called the "<u>Final</u> <u>Prospectus</u>". This opinion letter is furnished pursuant to Section 6(i) of the Underwriting Agreement-Standard Provisions, dated October 1, 2018, incorporated into the Pricing Agreement, dated June 16, 2025 (together, the "<u>Pricing Agreement</u>"), among the Company and the several underwriters named in Schedule I thereto (the "<u>Underwriters</u>"). Unless otherwise defined herein, capitalized terms defined in the Pricing Agreement are used herein as therein defined.

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For purposes of rendering this opinion, we have examined (i) the Registration Statement, including the Base Indenture, which is filed as an exhibit, (ii) the Ninth Supplemental Indenture, (iii) the global notes representing the Notes, (iv) the *estatutos sociales* (by-laws) of the Company, and (v) the corresponding corporate actions, and such other documents, records and matters of law, as we have deemed necessary, and have assumed the genuineness of all signatures and the authenticity of all documents submitted to us as originals and the conformity with the originals of all documents submitted to us as copies. In addition, we have assumed and have not verified the accuracy as to factual matters of each document we have reviewed.

Based on the foregoing, and subject to the further assumptions and qualifications set forth below, it is our opinion that:

<br> 1. The Company is duly incorporated and validly existing under the laws of Mexico.

<br> 2. The Company has the corporate power to, and all necessary corporate action has been taken to, execute and deliver the Notes.

<br> 3. The Notes are the valid, binding and enforceable obligations of the Company, entitled to the benefits of the Indenture.

This opinion is subject to the following qualifications:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Enforcement may be limited or affected by *concurso mercantil*, bankruptcy, insolvency, liquidation, reorganization, moratorium and other similar laws of general application relating to or affecting the rights of creditors generally; among other things, interest on principal will not accrue after declaration of bankruptcy, and the obligations of the Company in foreign currency shall be converted into Mexican currency at the rate of exchange published in the *Diario Oficial de la Federación* (Official Daily Gazette of the Federation) by *Banco de México* (the Central Bank of Mexico) in force on the date the declaration of *concurso mercantil* is made; such Mexican currency obligations shall then be converted into "*Unidades de Inversión*" or "*UDIS*" (inflation indexed units) at the rate of conversion published by *Banco de México* for such date, because the Notes are unsecured ("*quirografario*") and therefore no senior status is granted thereto under Mexican law; also pursuant to the laws of Mexico, labor claims, claims of tax authorities for unpaid taxes will have priority over claims of the holders of the Notes;

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)&nbsp;&nbsp;&nbsp;&nbsp; We note that the payment of interest on interest may not be enforceable under Mexican law; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; We note that Article 1093 of the Mexican Commerce Code (*Código de Comercio*), provides that for a choice of jurisdiction to be valid under Mexican Law, such jurisdiction must relate to the domicile of one of the parties to the relevant agreement, to the place where the obligations under such agreement are to be fulfilled, or to the location of the relevant item.

In addition, we have assumed that the Company and the Trustee have satisfied those legal requirements that are applicable to each of them under the law other than federal law of Mexico to the extent necessary to make the Indenture and the Notes enforceable against each of them.

We express no opinion as to the laws of any jurisdiction other than Mexico and we have assumed that there is nothing in any other law that affects our opinion, which is delivered, based upon Mexican law applicable on the date hereof. In particular, we have made no independent investigation of the laws of the United States of America or any state or other political subdivision thereof or therein as a basis for the opinions stated herein and do not express or imply any opinion on or based on such laws. To the extent that the federal laws of the United States of America and the State of New York are relevant to our opinion set forth above, we have, without making any independent investigation with respect thereto, assumed the accuracy of, and our opinion is subject to the qualifications, assumptions and exceptions set forth in, the opinion, dated today, of Cleary Gottlieb Steen & Hamilton LLP, special United States counsel to the Company.

In rendering the foregoing opinion, we have relied (i) as to factual matters on certificates of directors and executive officers of the Company and (ii) as to matters of United States federal and New York law on the opinion of Cleary Gottlieb Steen & Hamilton LLP, United States counsel for the Company.

We note that Rafael Robles Miaja, a partner of this firm, is currently Pro- Secretary of the Board of Directors of the Company.

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| ![](image00001.jpg) | América Móvil, S.A.B. de C.V.<br> June 20, 2025<br> Page 4<br>|

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We hereby consent to the filing of this opinion as an exhibit to the Registration Statement and to the reference to this firm in the prospectus constituting a part of the Registration Statement under the heading "Validity of Securities" and "Enforceability of Civil Liabilities" and in any prospectus supplements related thereto under the heading "Validity of Notes" as counsel for the Company who have passed on the validity of the notes being registered by the Registration Statement. In giving such consent, we do not thereby admit that we are experts with respect to any part of the Registration Statement, including this exhibit, within the meaning of the term "expert" as used in the U.S. Securities Act of 1933, as amended, or the rules and regulations of the U.S. Securities and Exchange Commission issued thereunder. Cleary Gottlieb Steen & Hamilton LLP may rely upon this opinion in rendering their opinion to you.

This opinion is being rendered based on the legal provisions applicable in Mexico as of the date hereof. We assume no obligation to supplement this opinion if any applicable law changes after the date hereof or if we become aware of any facts that might change the opinions expressed herein after the date hereof.

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| Very truly yours, |
| /s/ Bufete Robles Miaja, S.C. |
| Bufete Robles Miaja, S.C. |

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