• AT&T Inc. (AT&T Intellectual Property)
• Vodafone Group Plc
• Google LLC
• Verizon Communications Inc.
• Telef?nica S.A.
• Orange S.A.
• Samsung Electronics Co. Ltd. (Samsung Group)
• Huawei Technologies Co. Ltd. (Huawei Investment & Holding Co. Ltd.)
• Sinch AB
• Telstra Corporation Limited