Volte of China Telecom can't be used. What happened?

VoLTE needs more than 4g network. When there is no network above 4G in the area, there will be a situation that "the telecom card is not registered with VoLTE, so the calling service cannot be used".

Maybe you haven't started the volte service yet. You can call 10000 to start the service, and then restart your phone to try. The above information is for reference only. The daily rental version of the Star Card will send the 20 yuan phone bill as soon as it is processed, and the exclusive directional traffic package of the 200G Star Card will make it easier and more free to brush videos and play the whole network. For details, please visit the online business hall of Guangxi Telecom. Customer service will answer your questions on the 29th.

Satellite telephone service:

Tiantong satellite mobile communication system has achieved comprehensive coverage of China's territory and territorial waters, and can be widely used in marine fisheries, emergency rescue and other scenarios. In the service area, users can use voice, SMS, data communication and location services.

Besides hand-held phones, there are many types of terminals, such as car terminals and Tiantong cats. Users can also directly connect to the terminal through their mobile phone applications to realize satellite communication. At present, the system is operated exclusively by China Telecom with the number 1740. Users can apply online or in some offline business halls.