Joke Collection Website - Public benefit messages - O-Fresh headphones exchanged in oppo integral mall can only increase the volume button but not decrease it. What happened?

O-Fresh headphones exchanged in oppo integral mall can only increase the volume button but not decrease it. What happened?

You can only increase the volume, not decrease it. It is suggested to replace the earphone products for comparative observation, which may be caused by the mismatch between the earphone plug and the mobile phone jack. If the problem disappears after replacing the earphone, it means the earphone is the problem. Just go to OPPO official website Mall or OPPO Customer Service Center to buy earphone products; If the problem still exists after replacing the earphone, it may be the earphone jack of the mobile phone. It is recommended to take the mobile phone to the OPPO Customer Service Center for free testing. You can quickly find the address and telephone number of the official authorized service experience center of OPPO in the following ways: