SEC Form FWP filed by America Movil S.A.B. de C.V.

Filed Pursuant to Rule 433
Registration No. 333-287731

PRICING TERM SHEET

AMÉRICA MÓVIL, S.A.B. DE C.V.

Ps.3,500,000,000 10.125% Senior Notes due 2029

(the “2029 MXN Notes”)

Ps.6,500,000,000 10.300% Senior Notes due 2034

(the “2034 MXN Notes” and, together with the 2029 MXN Notes, the “MXN Notes”)

November 19, 2025

*Under Rule 15c6-1 of the U.S. Securities Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle in one business day, unless the parties to such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the MXN Notes prior to the date that is one business day prior to the date of delivery of the MXN Notes will be required, by virtue of the fact that the MXN Notes initially will settle in four business days (T+4), to specify alternative settlement arrangements to prevent a failed settlement.

Capitalized terms used and not defined in this final term sheet have the meanings assigned to such terms in the Issuer’s preliminary prospectus supplement dated November 18, 2025 relating to the MXN Notes (the “Prospectus Supplement”) which has been filed with the SEC under Registration No. 333-287731.

PROHIBITION OF SALES TO EEA RETAIL INVESTORS – The MXN Notes are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the European Economic Area (the “EEA”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client as defined in point (11) of Article 4(1) of Directive 2014/65/EU (as amended, “MiFID II”); (ii) a customer within the meaning of Directive (EU) 2016/97 (as amended, the “Insurance Distribution Directive”), where that customer would not qualify as a professional client as defined in point (10) of Article 4(1) of MiFID II; or (iii) not a qualified investor as defined in Regulation (EU) 2017/1129 (as amended, the “Prospectus Regulation”). Consequently, no key information document required by Regulation (EU) No 1286/2014 (as amended, the “PRIIPs Regulation”) for offering or selling the MXN Notes or otherwise making them available to retail investors in the EEA has been prepared and therefore offering or selling the MXN Notes or otherwise making them available to any retail investor in the EEA may be unlawful under the PRIIPs Regulation.

PROHIBITION OF SALES TO UK RETAIL INVESTORS – The MXN Notes are not intended to be offered, sold or otherwise made available to and should not be offered, sold or otherwise made available to any retail investor in the United Kingdom (the “UK”). For these purposes, a retail investor means a person who is one (or more) of: (i) a retail client, as defined in point (8) of Article 2 of Regulation (EU) No 2017/565 as it forms part of domestic law by virtue of the European Union (Withdrawal) Act 2018 (the “EUWA”); (ii) a customer within the meaning of the provisions of the Financial Services and Markets Act 2000 (as amended, the “FSMA”) and any rules or regulations made under the FSMA to implement Directive (EU) 2016/97, where that customer would not qualify as a professional client, as defined in point (8) of Article 2(1) of Regulation (EU) No 600/2014 as it forms part of domestic law by virtue of the EUWA; or (iii) not a qualified investor as defined in Article 2 of the Prospectus Regulation as it forms part of domestic law by virtue of the EUWA. Consequently, no key information document required by the PRIIPs Regulation as it forms part of domestic law by virtue of the EUWA (the “UK PRIIPs Regulation”) for offering or selling the MXN Notes or otherwise making them available to retail investors in the UK has been prepared and therefore offering or selling the MXN Notes or otherwise making them available to any retail investor in the UK may be unlawful under the UK PRIIPs Regulation.

The MXN Notes are concurrently being offered in Mexico pursuant to a prospectus approved by the Comisión Nacional Bancaria y de Valores (Mexican National Banking and Securities Commission, or the “CNBV”). The MXN Notes will be registered with the Mexican Registro Nacional de Valores (the “National Securities Registry”) maintained by the CNBV. Registration in the National Securities Registry does not imply certification as to the validity of the securities, the solvency of the issuer or the accuracy or truthfulness of the information contained in the prospectus, nor does it validate the acts that, if any, may have been carried out in violation of the laws. The CNBV has not reviewed the contents of this announcement.

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The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in this offering will arrange to send you the prospectus if you request it by calling BofA Securities, Inc. toll free at +1-800-294-1322; Goldman Sachs & Co. LLC toll free at +1-866-471-2526; Santander US Capital Markets LLC toll free at +1-855-403-3636; or Scotia Capital (USA) Inc. at +1-800-372-3930.

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