A micro phone is also called mouth piece, used to convey our voice to other phones. If your voice in not clearly reaching your respondent then it is time to have a check for your iphone 4 microphone. Searching for a technician…. Don’t worry pick up your phone and call us at 04 4211494. Our pick and drop service will be initiated by your call. We will return you repaired iphone 4 on the same day.