I have a problem with my N4
recently my mic and earpiece are not working anymore with regular calls - even if I plug a headset mic no sound and the other person cant hear me.
But skype and hangout works fine earpiece mic or mic headset.
what I tried
install lastest cyanogen did not work
tried all stable cyanogen did not work
I also tried different radio did not work
and I just flash stock 4.2.1 did not work also.
Also tried the app Soundabout to unckeck wired headset to force earpice and mic and didnt work also
Im sure its not hardware since I can hear and mic works on hangout or skype.