Saw this and thought it might be useful.

I’ve seen a few people post on forums to say their microphone appears to be dead when making a call.
A temporary fix until new firmware is released is to turn on the loudspeaker and then switch back
to microphone mode.

This seems to give the phone the kick it needs to get the mic functional.
Currently the problem seems to be isolated to the 10.0.0.18 firmware.

Let me know if this works or doesn’t work for you, especially those of you suffering mic problems.

Bugs