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
Vodafone Group Plc
Mobile Telesystems
PJSC MegaFon
Beeline Russia
Tele2 AB