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Microphone stopped working

Petitio

Petitio

Lurker
Hey,

my microphone suddenly stopped working on my S7 Edge (Duos), which I have owned for less than 3 weeks.
The other caller cannot hear me neither on normal phone mode nor on speaker nor with an external mic (tested ok). I can not record an audio file or record an audio track on my camera with either. The audio recording stays at 0% volume.

I did not drop the phone or hit it against anything. Only relevant thing I remember doing recently is activate OK Google voice recognition on all screens.

Things I have tried so far:
- Reboot in Safe mode
- Cleaning the mic hole with pressurized air and gently with a sharp needle (some tiny insect was in there I think but it might have from the USB port or speaker as well)
- Factory reset

What's weird is that no external mic seems to work either.

Is there anything else I haven't thought of or should try (e.g. hard reset if that makes any difference) before sending the device in for RMA?

Thanks in advance for your assistance,
Petitio
 
Dear Snakesystem,
thanks for your idea. I just tried calling with the BT of my rented car and it worked.
Still no change with the phone mic or external headset unfortunately...
I do get a static noise though when plugging and unplugging the headset while recording.
 
Hey,

thanks for your continued help. I will definitely buy a BT-Headset, was planning on it anyway- which one are you using?

My first attempt at fixing the problem was - sad to say - unsuccessful, but I will give cleaning the headphone jack another go.

Switching to speaker phone did not help either - the caller was still unable to hear me.

I attached a screenshot of Samsungs Voice Recorder. The far left part was recording with the phone's mic, the middle part with the external mic (regular headset - I tried another one aswell) and the last part was when I unplugged the external mic. Finally I reinserted it to show you the message I receive everytime I plug a headset, which makes me think that the change is indeed recognized by the phone.

Screenshot_20160817-214013.png


I would ask anyone with the S7 Edge to try and record using interview mode (in the Voice Recorder app) while holding their finger on the bottom mic hole. If i understand it correctly, both mics should be recording. Unfortunately I have no experience with that mode before the issue first occurred.
 
Hi again,

just an uodate: I get no recording from either microphone in interview mode.

I also uninstalled every app that uses the microphone or deactivated it and removed it's permission (except for the voice recorder and the Google app in My KNOX for which it says "enforced by policy"). Unfortunately that did not help. After that I wiped the app cache in the boot menu, but that didn't help either.

If I use an external microphone it sometimes registers a muffled noise if I tap on it with my finger.

I'm leaning towards sending the device in but I will try another hard reset this weekend.

Thanks for your help so far!
 
Glad to see I'm not the only one with this problem. I started the RMA request (faulty device during the first 14 days) and will keep you guys updated how it goes.
 
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