Originally Posted by darkmage1991
during a call volume randomly just turns down to an inaudible level to the point i just gotta hang up on the person and call back. is this a firmware issue? common or just some setting im messing? at the moment im running Mahdi rom latest version
Generally I have facing the same problem while i was using Wi-fi network for making calls. If it happens regular basis on each and every call there must be a firmware issue.
OR Else, you can check with your service provider once, just for double check.