Oppor 15 There is no sound when calling or answering the phone. You can listen to it on the speaker, and there is no sound when watching TV.

In the process of using the mobile phone, if the receiver sound is low, you can try the following methods:

When talking, the receiver mouth is not aligned with the ear position, try after adjustment;

During the call, use the volume up button to turn up the sound;

Check whether the film, leather case, etc. are in good condition. The receiver is being blocked. If it is, please take it off and observe it.

Whether the replacement time, place and contact exclusion are caused by network problems;

If the above methods fail to solve your problem, please back up your mobile phone data (mobile phone number, SMS, photos, etc. ) and bring the purchase invoice, warranty card and mobile phone to the nearest OPPO customer service center for testing and processing.

This answer applies to all OPPO models.