Gansu Mobile handles video calls by SMS.

VoLTE service, like calling and texting, is a free basic service function that mobile phone numbers automatically enjoy, and there is no function fee.

VoLTE-based high-definition voice calls are charged on time and long, and have no direct relationship with traffic. The charging standard is the same as that of 2/3G audio calls, and all existing packages are applicable. VoLTE-based high-definition video calls are charged on time and for a long time. At present, the domestic call fee standard (excluding Hong Kong, Macao and Taiwan) is 0.29 yuan/minute. So it won't consume more power.