The sound of the mobile phone suddenly turned down, and I couldn't turn it off.

If you use a vivo phone, how to deal with the low speaker volume:

1. Please turn the media volume to the maximum.

Please check whether the media volume is set to the maximum, play audio/video, and then press the volume increase button to increase the volume.

2. Confirm whether a Bluetooth device is connected (for silent scenes)

If a Bluetooth device is connected, you can play sound from the Bluetooth device, such as Bluetooth headset, car Bluetooth, etc. You can go to Settings-Other Networks and Connections and turn off the Bluetooth function to view.

3. Confirm whether the equipment is damaged and discharged into liquid or ash.

If the equipment is damaged due to falling, liquid is put outside, dust is put in, etc. , may affect the noise, please take the equipment to the customer service center for testing.

4. Ensure that the external discharge is not blocked or blocked.

Please ensure that the position of the external sound hole is not blocked or blocked, such as protective shell, dirt, etc. If the sound hole is blocked, you can try to clean it, or take the equipment to the customer service center to clean it.

5, caused by sound source

If the abnormal sound of a music/video, such as low sound and noisy sound, is the cause of the sound of the music/video file itself, you can try to play other sound sources.

6. Upgrade the system

Please go to Settings-System Upgrade (some models are: Settings-My Device-iQOO? UI/Funtouch OS version) to view the system version information. If it is not the latest version, I suggest you upgrade your experience.

7, service center testing

If the above methods can't help the recovery, it needs to be detected and handled by the customer service center. Address of customer service center: Go to vivo official website /vivo Mall APP-My-Service outlets/after-sales outlets-select provinces and cities to inquire about the address of customer service center;

Tips: It is recommended to bring relevant purchase vouchers (such as purchase invoices/warranty cards/ID cards) when you go, and call the service center staff in advance to ensure that the staff will go again during normal working hours, avoid running empty, and pay attention to safety on the way back and forth.

If it refers to other situations, you can also enter this link page to consult online customer service for details.