Vivo X9L mobile phone can't answer the phone. What if it keeps showing "dialing" or "unable to connect" and there is no sound?

I can't hear the sound on the phone, which means I'm dialing and I can't get through. It may be that the signal at the current location or the location of the contact is not good. You can try the following methods:

First, hang up and try again.

Second, try to restart the phone.

Third, if the current network environment is very poor, it is suggested to try to change to a better network environment.

Fourth, try to change the number and try to rule out whether it is the other party's reason.

5. Enter Settings-More Settings-Restore Factory Settings-Restore all settings (this operation will not lose the data in the phone).

Specific operation steps:

1. Find the settings on the phone desktop and enter.

2. Please go to Settings to find more settings.

3. Enter more settings and find the factory settings.

4. Click "Restore all settings" to view.