Vivox20' s cell phone ring stopped ringing in less than two seconds.

It is recommended to try the operation according to the following methods:

1, enter phone settings-sound-turn off mute, and turn up the ringtone volume.

2. Pull-up/pull-down shortcut bar is accelerated with one button (cleared with one button) to release running memory.

3. Restart the phone.

4. Go to phone settings-General/More settings-Restore factory settings-Restore all settings, this operation will not lose data, and then reset the ringtone.