[Q] Call Audio Not Working? - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

So I'm using the Google Experience Rom and I noticed that the call audio is not working on either end. I cannot hear anyone I call nor can they hear me. No dial tone is heard either. Is there any immediate fix rather than just to odin back and reflash the rom?

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Cyanogenmod - Call Issues

I got this issue since 10.1 (and on 10.2) where i recieve phone calls.
1. The call comes in, and i pick it up but i can't hear the caller.
2. Sometimes the caller can hear me but i can't hear them.
3. Sometimes i can hear the caller but the call got noise
I had to return to stock ROM after this. It doesnt matter if i use a RC or nightly build. This also happens on my both S3 and S4? I have not modified the modem or any other files
Any suggestions on whats wrong?

mic sensitivity issue

I'm using call recorder to record call but the problem is that during call my voice is very loud while reception voice is clear. I have tried multiple call recorder but all having the same issue. If I put mobile away from my mouth than it is a bit better.
I tried built in sound recorder and it worked fine no issue.
Only during call I have this problem.
I'm rooted and I'm on 4.4.2
Please help.

Non native phone app

All of a sudden last week, I am getting no sound on my GS4 when making calls--no outbound or inbound sound and neither side can hear. The call is going through. Voice recorder and playback indicate that it is not a mic or speaker problem. I have hard reset the phone to no avail. Every now and then, it will allow me to make one call but then it goes out again.
My question here, other than if anyone knows how to fix this, is if there is another phone application instead of com.android.phone that I can install and use instead of the native phone app? Phone is rooted.

Videocall microphone issue

Hey everyone!
I have a strange issue with microphone.. when i would like to make a video call then the other person cant hear me.
Microphone is working well in normal call, normal internet call, call recording, video recording, voice message.
If i talk on messenger by normal call and during the calling i turn on the camera then the other person cant hear me more...
If i use headphone then the other person can hear me in videocall
What i tried:
Reboot, factory reset, deep wipe, stock and custom rom
But no one helped..
Any idea?
Somebody can help me pls?
Up ☝
I have to same issue. Couldnt find a solution yet.

Echoing for other party while I am using loudspeaker on voice calls / top-mic test

I have had the phone for about a month now, and I have an issue where if the call is on loudspeaker for me the other person hears a lot of echo.
I believe it to be because it diverts to the top microphone when in loudspeaker, but I am not sure what the issue is.
When doing the hardware test the 'top-mic' test is extremely echo-y. I can do a video of this if it helps, but its just looping the original sound back and keeps getting louder and louder. The main-mic is fine.
Anyone experienced this and have a solution? Thanks
Edit: I have tried a few things like the Micfix module but that didnt help.

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