Voice memo/recorder microphone very quiet upon playback
Hi,
Ive just got my hands on a used iPhone 7 4.7 and have just one issue. The bottom microphone works for voice calls yet when recording using the voice memo app the microphone is very quiet on playback. It does pick up my voice if I shout into it, the scrolling noise bar thing does show its receiving sound. If using normal volume to speak into it the scrolling bar thing stays pretty much horizontal.
Siri is working fine, front upper and rear microphones appear to work normally too.
Its just the microphone for voice memo which seems effected. I was thinking of swopping the dock port over but I believe Siri uses the same mic as voice memo so is this really worthwhile?
The phone is running the latest iOS v11.2.6 has never been opened or water damaged. Ive cleaned the all microphone meshes of dust etc.
Anybody got any ideas? Could this be an audio amplifier IC failure at all?
Thanks
Is this a good question?