Why is there no sound when the phone calls?

If you are using a vivo phone, you can troubleshoot as follows:

1. Go to Settings--Sound and Vibration--Turn off mute, select "Ring Mode", and set Increase the ringer volume; if there is a mute button on the side of the fuselage, you can move the mute button upward to cancel the mute mode;

2. If you enter the do not disturb mode/focus mode, there will be no prompt for incoming calls at this time , please enter Settings--Sound and Vibration/Sound Vibration and Mute Key--Focus Mode/Do Not Disturb Mode--Enter the corresponding scene--Turn off the function;

3. Restart the phone and observe whether it is restored. ;

4. Enter Settings--System Management/More Settings--Backup and Reset/Restore Factory Settings--Restore All Settings--Restore;

Note: Restore All Settings will not delete any data or media files, but will only restore all settings of the phone (such as set wallpapers, unlocking styles, WiFi, default open programs, desktop layout, etc.), and some third-party application accounts need to log in again, please confirm not Do not operate until it affects the use of the software. For data security, it is recommended to back up mobile phone data in advance before operation. (You can enter Cloud Service - Device Cloud Backup - Backup Data Type - System Data - Return - Backup Now to back up some system settings and desktop layout; Cloud Service - Data Synchronization - Turn on WLAN, Bluetooth, etc. Synchronize the data to the cloud service)

5. If the above method fails to solve the problem, please back up important data on the mobile phone in advance and take the mobile phone to the vivo customer service center for inspection and processing.

Warm reminder: It is recommended to bring relevant purchase certificates (such as purchase invoice/warranty card/ID card) when you go, and call the service center staff in advance to ensure that the staff will go during normal working hours. Avoid empty running and pay attention to safety on the way to and from the place.