Vodafone Group Plc
MTN Group Limited
Cell C (Pty) Ltd
Telkom SA SOC Limited
Telefonica Brasil SA (Vivo)
Claro SA
Oi S.A.
Telecom Italia S.p.A.
China Mobile Limited
China Unicom (Hong Kong) Limited
China Telecom Corporation Limited
Reliance Jio Infocomm Ltd
Bharti Airtel Limited
Mahanagar Telephone Nigam Ltd
America Movil
SA DE C.V.
Telefonica
S.A.
AT&T Inc