Oppo k7 external speaker noise?

Causes and solutions of loudspeaker noise;

1. Due to the noise of played files, such as playing music and online video, it is suggested to change the playing resources for comparison;

2. The speaker hole is located on the back of the mobile phone, which will make noise if it is placed on paper when playing music;

3. It is recommended to go to the customer service center to clean the speaker hole if the foreign body is blocked or enters the dust impurities.

After the above methods are eliminated, the noise still appears. Please back up your mobile phone information (phone number, SMS, photos, etc.). ) and bring the mobile phone, purchase invoice and warranty card to the local OPPO official authorized service experience center for testing.

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