How does iPhone7 use volte?

1, iPhone6, iphone6 plus, iphone6s, Iphone6S Plus, the version of iOS system is required to be above iOS 9.2, and users above iOS 9.2 will receive a push notice to upgrade carrierbundle to version 23.2 to support VoLTE.

2. Users above 2.iOS9.2 will be reminded to update the operator's information, and users can also try to update manually in the menu (Settings->; General->; About this machine->; Operator)

3. Open volte: Settings-> Cellular mobile network->; Enable 4G-& gt；; Voice and data;

4. There is no difference in network identification. The way to judge whether VoLTE is being used is to display "China Mobile 4G" instead of "China Mobile" during the call.