There have been lots of HTC One owners complaining about the
microphone. During calls the other caller may report that you sound
muffled and the sound quality is poor. Switching to speaker alleviates
the problem, but no one wants to have to use speaker phone all the time.
There are two microphones on the HTC One: one on the bottom edge and
one on the back at the top to the right of the camera.Potential fixes:
- Very carefully take a needle, or even better get a can of compressed air, and make sure that there’s no dust or dirt stuck in either of your microphones.
- If you use a case try taking it off and see if the problem is gone. It may be that one or both of the microphones are being blocked.
- Some people have reported success by actually covering the microphone on the back, you could hold it in such a way as it’s covered, or you could put a piece of tape over it.
- If none of that works then you might want to try and arrange a replacement.