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[Help] Mic doesn't work in calls

i can use voice recording or voice to text just fine. i can also make phone calls in speaker phone mode just fine. but when i turn speaker phone off the person on the other end can BARELLLLLY hear me

ugh so i've been trying to test it
i left myself some voicemails using the phone
if i talk normal i hear nothing with an occasional click or something. if i take my finger and rub it on the noise canceling mic while talking i can sort of hear myself talking but its really low and garbled sounding, and of course if i switch to speakeprhone then i hear myself fine
this sucks, its obviously some kind of software issue. does the phone not use the secondary mic for noise canceling during speakerphone? that would explain the issue i guess.

mattpannella said:
ugh so i've been trying to test it
i left myself some voicemails using the phone
if i talk normal i hear nothing with an occasional click or something. if i take my finger and rub it on the noise canceling mic while talking i can sort of hear myself talking but its really low and garbled sounding, and of course if i switch to speakeprhone then i hear myself fine
this sucks, its obviously some kind of software issue. does the phone not use the secondary mic for noise canceling during speakerphone? that would explain the issue i guess.
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The mic on my first N1 was broken so it might be a hardware issue.

its either software or the secondary mic is broke and is causing it to filter out everything, because the main mic works great on speakerphone
this sucks

[Q] Rattling/buzzing noise, something loose inside.

Upon receiving my second HTC one today (I RMA'ed the first one due to quality control issues discussed here: https://www.youtube.com/watch?v=NwOu5oXpjVQ ) I find that this one have something loose inside of it, somewhere around the area of the upper speaker or the camera (camera works I've checked it). And it makes this Rattling/buzzing noise every single time a put the phone in my left palm (or by lightly tapping the upper part of the phone), quite annoying after awhile... It's not from a loose power button nor the volume keys. I also tried pulling out the simcard tray as well, and the noise persists.
I never noticed this on the first phone. Are you experiencing any of this? This can't be normal, right?

Hey, a simple no answer would be good if you're not.
Thanks.
(Added poll)

No not for me. If anything, its probably the camera for you thats "loose". It happens with a lot of phones

I'm having a buzzing vibration from the top speaker when playing sound through the speakers (music, video, etc. but not during call). Definitely something vibrating under the speaker grill with the sound waves of the speaker, particularly at the frequency of a male voice talking. I'm about to contact HTC for a return. Very frustrating because the rest of my phone works great. Now I'm worried about getting a refurbished unit with other problems...

dborgo said:
I'm having a buzzing vibration from the top speaker when playing sound through the speakers (music, video, etc. but not during call). Definitely something vibrating under the speaker grill with the sound waves of the speaker, particularly at the frequency of a male voice talking. I'm about to contact HTC for a return. Very frustrating because the rest of my phone works great. Now I'm worried about getting a refurbished unit with other problems...
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Got mine RMA'ed, second time now. I haven't received a refurbished unit as of yet.. But I'm not in the US and rma's are handled a little different (we do it through the retailer as long as there is any warranty left). Got a new device last time, and I'm expecting that is what I will be getting this time also.

[Q] Is a Microphone Test Available?

I seem to have a problem when using the speakerphone. I can't be heard on the other end. Regular calls are fine.
I'm using Cyanogenmod 10.1.3. As I understand the phone, the regular microphone is at the bottom edge on the keyboard part of the phone. There's another microphone (noise cancelling?) on the top edge near the power button. The speaker is the slot on the back. Does that have a microphone function too?
I recently replaced the earpiece like so many other people have. Could I have disturbed something near that top mic?
I was wondering if there's a way to test the mic near the power button.
Thanks,
Paul

Question S21 Ultra Microphone Background Noise Cancelation too aggressive on speaker calls

Has anyone noticed the background noise cancellation when using the speaker microphone is too aggressive in a VOLTE or video call? Any time I lay my phone flat and step > 3' away and talk out loud at an angle that is not directly pointed at the phone, the receiving party complains that my voice is too low or cutting in and out. It happens with multiple video apps but is less prominent in Duo. I wanted to see if anyone else has been experiencing similar issues. This has been happening on 2 different devices after my first replacement.

Using a case or skin? Don't obstruct the mic ports, they tend to be very small.
Maybe just be the design, a setting or a firmware issue (hopefully Samsung will patch if so).
Been a wet dog year for Android and Samsung...

Yeah, i have tried without a case and the problem still exists. I think the audio processor for the Mic inputs may be too aggressive or not tuned for my voice. After looking at similar problems with other devices, I think the solution lies in the location of the audio configuration files; particularly in system/vendor/etc/audio_effects.xml and audio_platform_info.xml. I'm not too familiar with editing configuration files on a non-rooted device. Is there any way to modify some of the config files to play around with the stock noise suppression?

Try disabling or covering one or more of the mics.
Eventually Samsung will probably roll out a firmware or software fix

Akeid said:
Has anyone noticed the background noise cancellation when using the speaker microphone is too aggressive in a VOLTE or video call? Any time I lay my phone flat and step > 3' away and talk out loud at an angle that is not directly pointed at the phone, the receiving party complains that my voice is too low or cutting in and out. It happens with multiple video apps but is less prominent in Duo. I wanted to see if anyone else has been experiencing similar issues. This has been happening on 2 different devices after my first replacement.
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I understand this isn't the correct place for my reply but I just bought two phones one came from Samsung which is the S21 Ultra 5G but the other is the Samsung Note 9. Both new. Every time I try to talk to someone with my note 9 they say they cannot hear me. So I have to Culp the phone and my mouth as like making a sound tunnel, if you will, from my mouth directly to the phone and they are able to hear me but not sure how well. So if you find the solution I'll keep and eye out so I can hopefully fix my problem

Historically, Samsung is known to switch to the top mic for speakerphone mode, and lower mic for handset mode sometimes ... Maybe try speaking into the top mic and see if the noise cancellation is still aggressive.

Akeid said:
Has anyone noticed the background noise cancellation when using the speaker microphone is too aggressive in a VOLTE or video call? Any time I lay my phone flat and step > 3' away and talk out loud at an angle that is not directly pointed at the phone, the receiving party complains that my voice is too low or cutting in and out. It happens with multiple video apps but is less prominent in Duo. I wanted to see if anyone else has been experiencing similar issues. This has been happening on 2 different devices after my first replacement.
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Yes I agree. Same issue

Question Microphone issue

Hi,
I am using S21 Ultra Snapdragon version. I am having issue with my microphone which is adjacent to charger plug. It only works when i put my mouth real close to it or at straight plane. During voice call, the person receiving my call complains of hearing voice in fluctuating volume (sometimes loud sometimes small in seconds). I am on latest firmware. I have already tried cleaning my the hole of microphone. Please help.
Thank you.

Qhycliss1 said:
Hi,
I am using S21 Ultra Snapdragon version. I am having issue with my microphone which is adjacent to charger plug. It only works when i put my mouth real close to it or at straight plane. During voice call, the person receiving my call complains of hearing voice in fluctuating volume (sometimes loud sometimes small in seconds). I am on latest firmware. I have already tried cleaning my the hole of microphone. Please help.
Thank you.
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If a factory reset doesn't help, it could be a microphone hardware issue. Better to take it to the service centre and get it checked out. Somethings can't be fixed with a software solution

Thank you for your reply. I had tried factory reset but no help.
This phone was left as a gift to me and unfortunately, in my country, the official service center doesnt repair phones from abroad. Also, I had shown this to four technicians. One said its likely software because if mic was damaged it wouldnt receive any noise. Remaining had said it was hardware issue and all of their answers were different.(problem in microphone, problem in IC). Thus, Im quite reluctant to send them for repair.
Could you please help regarding possible faulty hardware. The problem is my phone sends fluctuating volumed voice during call either from sim or messenger.
Thank you

@Qhycliss1: Just interested to know: does the same symptoms occur when you make a voice recording? Eg with the samsung native voice recording app?
That may (or not) exclude microphone HW issues.

Hi and thank you for your reply.
While using official voice recorder, if i keep my mouth near the lower microphone then the voice is excellent. However, if i deviate my mouth by creating an angle (if i face the screen and record) the volume in recording decreases but still i can hear recording.

Of note, when I try loopback test (*#0283#), the rcv_1st mic has muffled sound but when i arch my hand to direct sound from mouth to mic) it is clear. I dont know if this is of any help.

Qhycliss1 said:
Hi and thank you for your reply.
While using official voice recorder, if i keep my mouth near the lower microphone then the voice is excellent. However, if i deviate my mouth by creating an angle (if i face the screen and record) the volume in recording decreases but still i can hear recording.
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Sounds like a defective microphone to me. Sorry I can't think of a software solution to help.
If I was in your situation and repair was not an option, I'd probably end up use USB headset with mic or Bluetooth earphones for calls. It's not ideal, but don't know what else to suggest.

enigmaamit said:
Sounds like a defective microphone to me. Sorry I can't think of a software solution to help.
If I was in your situation and repair was not an option, I'd probably end up use USB headset with mic or Bluetooth earphones for calls. It's not ideal, but don't know what else to suggest.
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Thank you so much for your help.
Yeah i think I have to use headphone till i get option for repair.

enigmaamit said:
If a factory reset doesn't help, it could be a microphone hardware issue. Better to take it to the service centre and get it checked out. Somethings can't be fixed with a software solution
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I am no expert by any means but I have found this to be be an interesting mic check tool. dial *#0283# More info is always good.

whbell said:
I am no expert by any means but I have found this to be be an interesting mic check tool. dial *#0283# More info is always good.
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Thank you for your reply. I had tried that code. There seems to be issue with rcv_1st mic.