[https://www.ifixit.com/Guide/iPhone+4+Rear+Camera+Replacement/3142#s15370|One screw, near the camera|new_window=true] (the large one fixing the board to the metal body of the phone), can sometimes cause this problem.
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[guide|3142|One screw, near the camera|stepid=15370|new_window=true] (the large one fixing the board to the metal body of the phone), can sometimes cause this problem.
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What is happening for sure in your case, the second mike near the headphones jack is not working. It seems to be grounded with the body and it's contact is on this particular screw!
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What's happening in your case, is that the second microphone near the audio jack is not working. It seems to be grounded to the body, and its contact is on this particular screw!
Well one screw near the camera (big head one fixing the bard to the metal body of the phone seems in some cases to be guilty of this).
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[https://www.ifixit.com/Guide/iPhone+4+Rear+Camera+Replacement/3142#s15370|One screw, near the camera|new_window=true] (the large one fixing the board to the metal body of the phone), can sometimes cause this problem.
What is happening for sure in your case, the second mike near the headphones jack is not working. It seems to be grounded with the body and it's contact is on this particular screw!
Again the same issue!!
Have you opened the phone?? Or dropped it?
Well one screw near the camera (big head one fixing the bard to the metal body of the phone seems in some cases to be guilty of this).
What is happening for sure in your case, the second mike near the headphones jack is not working. It seems to be grounded with the body and it's contact is on this particular screw!