Nut r2 is muted for no reason.

Pull down the menu bar to turn off "silent mode"

. Press the side key to increase the volume.

(1) Check whether the Do Not Disturb function is turned on.

Please open the settings, enter Do Not Disturb in the top search bar, and click to enter the Do Not Disturb interface. If this function is turned on, the ringing tone will be muted for a set period of time. It is recommended that you turn off this feature.

(2) Check the ringtone volume.

Please open Settings > Sound and Vibration/Sound, turn up the ringtone volume and try again.

(3) Did you touch the volume button or "SMS" or "Reminder" in the incoming call interface by mistake?

If you touch the volume up and down keys and the "SMS" and "Reminder" on the call interface, there will be no ring for this call, which is the normal design of the mobile phone.

(4) Check whether there is sound when playing music or dialing keys.

Please play the music and try to see if there is any sound. If there is a sound, please restart your phone and try to solve it.

Please set the dial tone to see if there is any sound. If there is a sound, please restart your phone and try to solve it.

Setting the path: go to phone settings > voice > more voice settings > dial tone, and select default or melody.

(5) Restore all settings

If the above operation does not solve your problem, please restore all settings and try again. Operating Steps: Open the settings, search and click Restore All Settings, and complete the operation of restoring all settings according to the mobile phone prompts.