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Table of Contents As filed with the Securities and Exchange Commission on April 28 , 2021 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , DC 20549 FORM 20 - F Annual Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 for the fiscal year ended December 31 , 2020 Commission file number : 1-16269 AMÉRICA MÓVIL , S.A.B. DE C.V. ( exact name of registrant as specified in its charter ) America Mobile ( translation of registrant's name into English ) United Mexican States ( jurisdiction of incorporation ) Lago Zurich 245 , Plaza Carso / Edificio Telcel Colonia Ampliación Granada , Miguel Hidalgo 11529 Mexico City , Mexico ( address of principal executive offices ) Daniela Lecuona Torras Lago Zurich 245 , Plaza Carso / Edificio Telcel , Piso 16 Colonia Ampliación Granada , Miguel Hidalgo 11529 Mexico City , Telephone : ( 5255 ) 2581-3700 / Facsimile : ( 5255 ) 2581-4422 E - mail : daniela.lecuona@americamovil.com ( name , telephone , e - mail and / or facsimile number and address of company contact person ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading symbol Title of each class : A Shares , without par value L Shares , without par value 3.125 % Senior Notes Due 2022 3.625 % Senior Notes Due 2029 2.875 % Senior Notes Due 2030 6.375 % Notes Due 2035 6.125 % Notes Due 2037 6.125 % Senior Notes Due 2040 4.375 % Senior Notes Due 2042 4.375 % Senior Notes Due 2049 AMOV AMX AMX22 AMX29 AMX30 AMX35 AMX37 AMX40 AMX42 AMX49 Securities registered pursuant to Section 12 ( g ) of the Act : None Name of each exchange on which registered : New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : None The number of outstanding shares of each of the registrant's classes of capital or common stock as of December 31 , 2020 : 20,578 million 520 million 45,764 million Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . AA Shares A Shares L Shares If this report is an annual or transition report , indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 . Indicate by check mark whether the registrant : ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) and ( 2 ) has been subject to such filing requirements for the past 90 days . Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this Chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes X No No X Yes Yes X No Yes X No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Accelerated filer Non - accelerated filer ✗ Large accelerated filer Emerging growth company Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing : U.S. GAAP X International Financial Reporting Standards as issued by the International Accounting Standards Board If " other " has been checked in response to the previous question , indicate by check mark which financial statement item the registrant has elected to follow . Item 17 Item 18 If this is an annual report , indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Other Yes No X