Take your phone to an authorised service centre for repair. If still the issue persists, then you will have to attain professional care for your Oppo device.To do this go to Settings > Backup and reset > factory reset. You should back up all the files before resetting the device. Hard reset the device: This is the last option.To do this click and hold the power button and then click on restart. It restarts the whole operation and helps in fixing the issue. Restarting the device normally fix the firmware glitches.

To do this click and hold the power button and then hold power off button until safe mode option pops up. The safe mode deactivates newly installed third-party applications and operates the phone in safe mode. If your phone mutes itself automatically, then you should try switching the phone to safe mode. For external speaker tap on speaker, and you can hear the loud music playing and for internal speaker click on melody. To do this go to dialer and click on *#7353#. In the case where your internal or external speaker suddenly stopped working then you should self-diagnose the device by accessing the diagnose tool.Fixes For Sound problems In Oppo Smartphones. Hardware problems can be the result of damaged components. Bugs or other minor issues cause software problems. But if the problem related to the hardware then probably you should take it to a professional for fixing it. If the problem associated with software or firmware in the smartphone then it can be fixed easily by yourself. There are multiple reasons for sound problems. Usually, sound problems are common in smartphones. Reasons for the Sound problem in Oppo smartphones.

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