The touch screen of ViVO mobile phone has no ringing, short message and no sound. What happened?

Excuse me, have you turned on the mute? I suggest you set it-turn off voice mute. If not, I suggest you try the following:

1, restart the phone and try to reset.

2, put the phone into settings-more settings-restore factory settings-try to restore all settings, restore settings will not lose data.

3. Click "Settings->; System upgrade-> Check for updates now "to upgrade the update system.