You can't call Volte without registration.

Volte can't dial without registration. The solution is as follows:

1. Turn on the airplane mode, wait for a while, and then turn off the airplane mode. Restarting the phone will solve the problem. Send a text message to 1000 1, code QX 10, and turn off the VoLTE (high definition calling) function. Turn on the flight mode and just turn it off.

2.VoLTE needs more than 4g network. When there is no network above 4g in the area, there will be cases where the telecom card is not registered with VoLTE and the call service cannot be used. At this time, the mobile phone can't make a phone call or get online, so it can be solved in a good place with 4G network.

3. Just turn on the cdma of the mobile phone. Go to phone settings-my device-all parameters-kernel version, and click 5 times to enter cit mode. Point the auxiliary in the upper right corner, point the modem, and point the cdma on. VOLTE is called long-term evolution, which means the high-speed wireless communication standard for mobile phones and data terminals.