HTC ONE M8 microphone issue

[Stephen Abernethy]

hi,
i have a bit of an issue with my M8.

i cannot be heard when i make a call with phone to head, i can be heard however if i put it to speaker phone.

i am unsure if there are 2 mics and maybe one is clogged with dirt? i can only see mic on back of phone between camera and lens.

my phone is rooted, with super CID and rom ARHD 9.1 with correct firmware. (was originally on 8.1, just updated to 9.1 to see if that would fix problem, but it didnt)

anybody any ideas?
thanks

 

[jacob 3]

im having the same problem, brand new phone, people cant hear me,only when i put the phone on speaker there able to hear me, weird thing this morning the phone was working, but headphones wont work either, cant believe this is happening on a phone i spent more then 600 dollars, :'(

 

[fsfty]

Defective unit...get a replacement.