China Mobile Communications Group Co. Ltd
Deutsche Telekom AG
Verizon Communications Inc.
Telefonica
S.A.
China Telecom Corporation Limited
Reliance Jio Infocomm Ltd
Singapore Telecommunications Ltd
Vodafone Group Plc
Orange SA
SFR SA
Bouygues Telecom SA
Free Mobile
Vodafone GmbH
Telefonica Germany GmbH & Co OHG
TIM S.p.A.
Wind Tre Spa
NTT DOCOMO Inc
KDDI Corporation
SoftBank Corp
Rakuten Group Inc
Telstra Group Limited
Singtel Optus Pty Ltd
TPG Telecom Ltd
Rogers Communications Inc.
BCE Inc.
TELUS Corporation
China Mobile Limited
China United Network Communications Ltd
Koninklijke KPN N.V.
VodafoneZiggo Group Holding BV
T-Mobile Netherlands Holding B.V.
Movistar
Masmovil Ibercom SA
BT Group plc
Telefonica UK Ltd
Hutchison 3G UK Limited
AT&T Inc
T-Mobile US Inc.