Xiaomi mi pro hd

the bass on the left earbud doesnt work. it just starts to rattle

Hi hassan. Maybe it's not fully compatible with your phone? I noticed this with various headphones I've used. Try it with other phones. Also, try cleaning the 3.5mm head of the headphones. Also try this: plug it in your phone, play a song, then slowly remove it, check if both side works. Otherwise, I'm afraid the headphones are broken.

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