América Móvil, S.A.B. de C.V. Ps.6,000,000,000 10.125% Senior Notes due 2029Ps.6,000,000,000 9.500% Senior Notes due 2031Ps.3,500,000,000 10.300% Senior Notes due 2034 We are offering Ps.6,000,000,000 aggregate principal amount of our 10.125% senior notes due 2029 (the “2029 MXN Notes”), Ps.6,000,000,000 aggregate principalamount of our 9.500% senior notes due 2031 (the “2031 MXN Notes”) and Ps.3,500,000,000 aggregate principal amount of our 10.300% senior notes due 2034 (the“2034MXN Notes” and, together with the 2029 MXN Notes and the 2031 MXN Notes, the “MXN Notes”). The 2029 MXN Notes will be part of the same series as, and will be fungible with, Ps.17,500,000,000 aggregate principal amount of 10.125% senior notes due 2029 thatwe issued on March27, 2024 (the “Original 2029 MXN Notes”). The 2031 MXN Notes will be part of the same series as, and will be fungible with, Ps.17,000,000,000aggregate principal amount of 9.500% senior notes due 2031 that we issued on July6, 2023 (the “Original 2031 MXN Notes”). The 2034 MXN Notes will be part of the sameseries as, and will be fungible with, Ps.20,000,000,000 aggregate principal amount of 10.300% senior notes due 2034 that we issued on February1, 2024 (the “Original 2034MXN Notes” and, together with the Original 2029 MXN Notes and the Original 2031 MXN Notes, the “Original MXN Notes”). The MXN Notes will have the same terms inall respects as their respective Original MXN Notes (except with respect to the date of issuance, the initial issuance price and the date from which interest accrues and is firstpaid). We will pay interest on the 2029 MXN Notes on January22 and July22 of each year, beginning on July22, 2025. We will pay interest on the 2031 MXN Notes onJanuary27 and July27 of each year, beginning on July27, 2025. We will pay interest on the 2034 MXN Notes on January30 and July30 of each year, beginning on July30,2025. The 2029 MXN Notes will mature on January22, 2029, the 2031 MXN Notes will mature on January27, 2031 and the 2034 MXN Notes will mature on January30,2034. The offering of the MXN Notes, each pursuant to this prospectus supplement, are not conditioned upon one another. The MXN Notes will be our unsecured and unsubordinated obligations and will rank equally in right of payment with all of our other unsecured and unsubordinateddebt. The MXN Notes will be effectively subordinated to all of our existing and future secured obligations and to all existing and future liabilities of our subsidiaries. TheMXN Notes will not be guaranteed by any of our subsidiaries. Prior to the applicable Par Call Date (as defined herein), we may, at our option, redeem the MXN Notes of any series, in whole at any time or in part from time to time,by paying the greater of the principal amount of the MXN Notes of such series to be redeemed and a “make-whole” amount,plusaccrued and unpaid interest and anyadditional interest thereon to, but not including, the applicable redemption date. On or after the applicable Par Call Date, we may, at our option, redeem the outstanding MXNNotes of any series, in whole at any time or in part from time to time, at 100% of the principal amount thereof,plusaccrued and unpaid interest and additional interest thereonto, but not including, the applicable redemption date. See “Description of Notes—Optional Redemption—Optional Redemption With ‘Make-Whole’ Amount or at Par” in thisprospectus supplement and “Description of MXN Notes—Optional Redemption—Optional Redemption” in the accompanying prospectus. In the event of certain changes in theapplicable rate of Mexican withholding taxes on interest, we may redeem the outstanding MXN Notes of any series, in whole but not in part, at a price equal to 100% of theirprincipal amount,plusaccrued and unpaid interest thereon to the applicable redemption date. See “Description of Notes—Optional Redemption—Tax Redemption” in thisprospectus supplement and “Description of MXN Notes—Optional Redemption—Redemption for Taxation Reasons” in the accompanying prospectus. The MXN Notes are being offered concurrently in Mexico pursuant to a prospectus and a prospectus supplement approved by theComisión Nacional Bancaria y deValores(the National Banking and Securities Commission, or the “CNBV”). The MXN Notes will be registered with the MexicanRegistro Nacional de Valores(the NationalSecurities Registry, or the “RNV”) maintained by the CNBV. The Original MXN Notes are listed on the Official List of the Luxembourg Stock Exchange for trading on the EuroMTF and on theBolsa Mexicana de Valores, S.A.B.de C.V.(the “Mexican Stock Exchange”). We will apply to list the MXN Notes on the Official List of the Luxembourg Stock Exchange for trading on the Euro MTF Market.The MXN Notes will be listed on the Mexican Stock Exchange. Investing in the MXN Notes involves risks. See “Risk Factors” beginning on page S-10of this prospectus supplement and page5of the accompanying prospectus. (1)Plus an aggregate of Ps.280,125,000.00 of