Sound problem - MTCD Android Head Units General

Suddenlly I can not hear phone calls. I can make a phone call but I can not hear any thing. I made a software update, factory reset but it does not help. Any one can help me.

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[Q] Cannot hear phone calls

Tonight i received a call and i could not hear the person talking, although when i put it on loud speaker i could hear them
They could hear me both on and off loud speaker.
Ive tried it again and cannot hear anyone when i make or receive a call but they can hear me. (speakerphone is fine)
Ive rebooted the phone a few times but still not working.
is this another common fault? i had the reboot issue but that stopped since i unrooted the phone.
I should add, the volume is up and i know the sound is working as i hear the phone ringing

[Q] Dead mic

Hello,
I'm not sure what to do about this, maybe a reset but When i make call or receive calls, the person on the line does not hear me. I had to put the headset on for people on the line to hear me.
Even using the google voice search function it wouldnt hear my voice, lol.
Could it be a dead mic or do i ned to reset the phone to factory default or sumthin.
Any help or experience with this.

In Ear Speaker

Hi guys, I did a search in this Arc forum for In ear Speaker problems and couldn't find anything, so I chose to start a new thread. Just know I DID try to find info for this phone but I only found a few other threads about different phones.
My in-ear speaker does not work in calls. It is extremely quiet, as if the volume is turned all the way down. Thing is, I try turning up the in-call volume during a call and it does nothing. But the weird thing is, I went into the service menu to test the hardware (using the *#*#7378423#*#* trick) and tested the in-ear speaker and it works fine! Loud and clear! But then immediately following that I'll try a call and still will hear practically nothing. Putting the call on speakerphone allows me to hear the other party, as well as putting in a headset, so I am stumped. Tried pulling the battery and have rebooted the phone many times and the problem is still persisting.
AND, on top of ALL of that, the damn thing was working just fine the other day. I switched to this phone last week and have been making calls successfully being able to hear the other party just fine. But suddenly today it's deciding to not work in a call. This is really weird.
Has anyone else had this problem? What else can I try to fix it? Any help or tips would be greatly appreciated. Thanks.
EDIT: Blah a hard reset fixed it. Feel free to delete this post mods!

[Q] hear receiving phone's speaker

We both have samsung galaxy s4 with t mobile, latest update. When Calling the other person, you can hear the receiving phone speaker. I'll hear their ringtone if they're volume is up. I'll hear whatever noise is in the room with their cell phone when calling. Even their voice. I've tested and it happens both ways. it's been going on for 6 months now. Just weird to have it happen to two phones. I've already done a factory reset. Any ideas?
So what's wrong, that's how phones work, you hear them and they hear you. ???
Pp.
that was dumb. why would I say I tested it. More detail for anyone else who thinks like pancho: it's like the mic is activated without answering the phone. Imagine calling someone and they don't answer, but you can hear everything the mic picks up. you'll hear their custom ringtone or whatever sound is near their phone mic.
This is how the question should have gone. :
When I place a call, before the person answers the phone I can hear the phones ringer tone and all ambient sounds near and around the phone or person I'm calling before they answer, what could cause this?
Humm, ............... your phone is possessed. You need an exorcist.
Edit : This may also occur if the person your calling is sitting next to you.
Pp.

Help! Can't listen my phone calls

Hello!
I have this weird issue when I try to answer/make a phone call where I can only listen to them through the loudspeaker... The oled earpiece seems to not work, I'm kind of thinking that this may be a software issue as I've tried listening WhatsApp audios through the "earpiece" and they sound fine... Apparently the phone calls are the only problem...
I did a factory reset, and it worked for the first phone call and then it stopped giving me any sound
Any idea how can I fix this?
Thank you in advance
In the phone app, go to call settings then additional settings, then turn off hearing aid compatibility. This fixed the issue for my friends LG G8. When I enabled it, the issue returned.

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