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Aporte original por: Drake Souter ,


It is probably the earpiece speaker that is going bad. Make sure the front facing camera and the proximity sensor are working. If they are both in working condition, I would replace the earpiece speaker first. If the camera or proximity sensor is not working, it is most likely the cable that contacts the earpiece speaker. Both of these parts are inexpensive and the repair is pretty straight forward. This is the link for the ifixit tear down of it, [guide|55926]