Bangkok, 21 December 2018 – TrueMove H re-emphasizes its leadership in 4G telecommunication network with the first Voice over the LTE network (VoLTE) service provider through its recent collaboration with NTT DoCoMo, the world's leading telecommunication company from Japan, and China Mobile Hong Kong in providing VoLTE service to NTT DoCoMo and China Mobile Hong Kong's customers, both business and leisure travelers, roaming in Thailand with high-definition voice service, faster connection and HD video call service. Conveniently from today, NTT DoCoMo and China Mobile Hong Kong's customers will be able to utilize 4G service on TrueMove H's 4G LTE network to connect to smartphones in Japan and Hong Kong that serve VoLTE technology.