So, I was on call and mid call the headphones stopped working. I am 90% certain that because how the phone's screen comes on during call at times, the settings have been changed. I just don't know what they are. This is what i have tried to troubleshoot the problem. 1) test my headphones on my laptop. (the mic works) 2) tested my friend's iphone headphones on my phone (the mic works) 3) restarted my phone multiple times (the mic doesnt work) 4) changed the TTY setting to "TTY-VCO" (it barely fixed the mic problem. but then the speaker phone stopped working. 5) looked for "noise reduction" setting as per few posts. i couldn't find it. 6) i used an app to see the phone is picking up any noise. (the app couldn't pickup anything when my headphones were plugged. I am really trying to avoid the reboot or factory re-set option that few have suggested in other posts. Does anyone know what could be the issue? how do i change this?