What's wrong with vivo mobile phone doing voice without sound?

If there is no sound when the software speaks, please refer to the following treatment:

1, permission to open software recording:

Go to Settings-Applications and Permissions-Permissions Management-Permissions-Recording-Finding Software-Permissions Allowed;

Enter I Manager-Software Management-Software Permission Management-Permission-Recording-Search, and turn on the switch of the corresponding software;

2. Please confirm whether the volume is too low, increase the volume and try again.

3. Check the bottom of the phone to make sure that the microphone is blocked by the phone case, dust, etc. You can try to clean it up and record it.

4. Back up the data of the software, uninstall it, reinstall it in the vivo app store, and then try to send it; Uninstalling the application will delete the software data and the data cannot be recovered after the operation. Remember to back up the data.

5. If the above methods fail to recover after operation, it is recommended to send the equipment to vivo customer service center for testing. Go to official website /vivo Mall APP-My-outlet to inquire or click the link on this webpage, and select the current city to get the address and contact information of the service center; It is recommended to call in advance before going to avoid empty running, plan your trip reasonably and travel safely.