Oppo mobile phone ringtone is too small.

If the phone is "cooing" or "silent", try the following methods!

1. Check whether the speaker is blocked or blocked (such as the influence of protective sleeve/shell or film) and clean it with a soft brush.

2. Restart the phone to see if it is restored.

You can pull down the status bar of your mobile phone and try to set it to ring.

4. Check whether the speakerphone volume is normal, confirm whether it is a video or player problem, and eliminate abnormal resources such as video and music.

5. If there is unilateral mute or low sound after adjusting the audio equalization, the phones with ColorOS 12 or above can enter "Settings >; Other settings (system settings) > accessibility > hearing >; Balance the volume of the left and right channels and pull the audio adjustment point back to the middle.

Other system phones can go to Settings > Other Settings > Accessibility > Audio Equalization, pull the audio adjustment point back to the middle, restore to the default position, and then return to normal.

6. Check whether the phone is connected with wired headphones or wireless Bluetooth devices.

7.ColorOS 12. 1 The system has added the function of turning off all microphone permissions with one button, and entered "Settings >; Permissions and Privacy opens Microphone Access.

If it is a hardware problem or the above methods can't solve your problem, it is recommended that you back up important data in advance, take your mobile phone and purchase certificate to the official service center of OPPO for testing, and professional engineers will solve it for you.