List of certain subsidiaries of America Movil, S.A.B. de C.V.

Exhibit 8.1

LIST OF CERTAIN SUBSIDIARIES OF AMÉRICA MÓVIL, S.A.B. DE

C.V.

As of March 31, 2019


Name of Company	Jurisdiction	Ownership Interest	Main Activity
AMX Tenedora, S.A. de C.V.	Mexico	100.0	Holding Company
Compañía Dominicana de Teléfonos, S. A. (Codetel)	Dominican Republic	100.0	Fixed-line/Wireless
Sercotel, S.A. de C.V.	Mexico	100.0	Holding Company
Radiomóvil Dipsa, S.A. de C.V. and subsidiaries (Telcel)	Mexico	100.0	Wireless
Puerto Rico Telephone Company, Inc.	Puerto Rico	100.0	Fixed-line/Wireless
Servicios de Comunicaciones de Honduras, S.A. de C.V. (Sercom Honduras)	Honduras	100.0	Wireless
TracFone Wireless, Inc.	USA	100.0	Wireless
Claro Telecom Participacões, S.A.	Brazil	100.0	Holding Company
Americel S.A.	Brazil	100.0	Wireless
Telecomunicaciones de Guatemala, S.A.	Guatemala	99.3	Fixed-line/Wireless
Empresa Nicaragüense de Telecomunicaciones, S.A.	Nicaragua	99.6	Fixed-line/Wireless
Estesa Holding Corp.	Panama	100.0	Holding Company
Cablenet, S.A.	Nicaragua	100.0	Cable TV
Estaciones Terrenas de Satélite, S.A. (Estesa)	Nicaragua	100.0	Cable TV
Compañía de Telecomunicaciones de El Salvador (CTE), S.A. de C.V.	El Salvador	95.8	Fixed-line
Cablenet, S.A. (Cablenet)	Guatemala	95.8	Fixed-line
Telecomoda, S.A. de C.V. (Telecomoda)	El Salvador	95.8	Directories Provider
CTE Telecom Personal, S.A. de C.V.	El Salvador	95.8	Wireless
Comunicación Celular S.A. (Comcel)	Colombia	99.4	Wireless
Telmex Colombia, S.A.	Colombia	99.4	Fixed-line/Cable TV
Consorcio Ecuatoriano de Telecomunicaciones, S.A. (Conecel)	Ecuador	100.0	Wireless
AMX Argentina, S.A.	Argentina	100.0	Wireless
Telstar, S.A.	Uruguay	99.9	Fixed-line
Flimay, S.A.	Uruguay	99.9	DTH
Ertach, S.A.	Argentina	99.9	Wireless
Telmex Argentina, S.A.	Argentina	99.9	Services to Corporate Customers
AMX Paraguay, S.A.	Paraguay	100.0	Wireless
AM Wireless Uruguay, S.A.	Uruguay	100.0	Wireless