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Microphone stops working when headset connected

Has anyone experienced the following bug: Make or receive a call using a bluetooth headset. A2DP or not, this doesn't matter. Then, use the voice command feature or try to record with Tape Machine, while your headset or car kit is still conencted. The microphone won't activate. This is quite aggravating if I try to use the voice dial or map finding capabilities while in the car... anyone else experience this?

i have the same problem when my phone is plugged into the aux in my car. the mic just stops working :/

I can verify this issue. I most want to be able to use this feature while in the car and using hands free, but I can't.

Try this http://forum.xda-developers.com/showpost.php?p=7986072&postcount=10

dever76 said:
I can verify this issue. I most want to be able to use this feature while in the car and using hands free, but I can't.
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It's annoying - my EVO didn't do this before I returned it.
I ordered a few inline microphone adapters for $2 each on ebay with free shipping - they're the things that allow you to use any pair of headphones with a cell phone as a headset. That should solve that problem, but it'd be nice to be able to use the phone mic when it's connected to my car stereo, as a speakerphone.

I guess the way Samsung saw it if you plug in a headset with a microphone(like the one included with your phone) you would then have 2 working microphones and get an echo. We all know this ends up being a problem in scenario #2 where you plug it into the AUX port on your car, but I guess Samsung did not consider that the most likely usage.
The best solution would be to have a software toggle to pick if the microphone is turned off or not.
This topic is basically the same thing, might want to continue the discussion there. http://forum.xda-developers.com/showthread.php?p=7986072

I wonder if, on the Epic, this is a hardware thing we're stuck with or if there truly is a software fix.
If the hardware wasn't built to detect when there is/isn't a microphone by checking out the connector, we may be SOL.

While I'm sure the rationale may be the same, please note that this thread, though similar to the 3.5mm headset thread, specifically references bluetooth. The issue happens even if the headset is paired - independently of whether or not it is in use. That's the problem.

just unpair bluetooth when you want to use the speech. only work around so far.

Why aren't bluetooth microphones supported?

I just assumed that I could use any bluetooth microphone for voip, voice recording etc. I currently do not have any bluetooth device but I tried 3 at a friends and they all paired for sound, but failed to work in using a voice recording app or a voip app. In a voip app the sound went strange (long sounds on the dial tone buttons) and then the sound resumed coming out of the tablet even though the headset device was showing as connected. Only a reboot solved this.
So I assume the bluetooth stack doesn't support recording, but why not? Isn't this a basic thing at this point? If I connect a bluetooth headset with mic that should be my input and output on sound for the time it is connected.
Or has anyone had success with a certain bluetooth model for recording?

No one can provide info on this? Is this the norm for tablets? I would assume even some ancient gingerbread phone would work with bluetooth headset/mic.
Does cyanogen team ever modify the kernel to include more functionality such as this?

I'd check other bluetooth threads around this section, but I've heard several people who've used bluetooth headsets with Nexus tablets. It may be a setting issue (particularly the device setting under bluetooth and the app settings concerning headsets).
-Ara

My Motorola HS850 works perfectly with the N7.
Sent from my Nexus 7 using Tapatalk 2

ExploreMN said:
My Motorola HS850 works perfectly with the N7.
Sent from my Nexus 7 using Tapatalk 2
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Same here, Plantronics bluetooth headset works perfectly for voip calls using Talkatone.

Thanks for the info. I don't have the model names off-hand but I'll ask my friend what they were. I wasn't aware that once a bluetooth device was paried that there were any additional options. I was under the impression that it was simply pair and use. With the case of a headset/mic I assumed it was inherited as your sound output/input for all apps while paired. The voip I tried is csipsimple and a voice recording app. I'm glad to at least some models work but I hope it isn't hit and miss and you have to be selective of what bluetooth device you use but rather something I was doing.
I didn't expect there to be any settings as well because even with no bluetooth recording device paired, I don't see anywhere in the settings recording recording (like mic volume).

Can't get mine to work. Single ear set I don't even get sound. Just dead air all around. The Southwing SA505 stereo gets sound fine but no mic function and on Groove ip no sound or mic on single ear or stereo. I even checked the settings making sure bluetooth was selected.

I'm from Canada so I can't try talkatone as I can't get google voice. I now purchased a btheadset. It pairs fine and I hear audio in all apps but I haven't found one app yet that works with the bluetooth mic. I wanted a voip sip app. I've pretty much tried all the free ones and other users have posted comments of bluetooth issues as well. There are a couple of paid sip apps that claim to support bluetooth, but I don't want to buy them to only find they don't.
So yes, android supports bluetooth mics, my thread title is inaccurate, but it seems the vast majority of recording apps do not have proper bluetooth support. Can someone name any app besides talkatone, even a voice recorder that works with bluetooth so I can just test it?
I'm actually surprised it's this bad. Bluetooth audio isn't that cutting edge. It should pair and now act as your soundcard so to speak. I initially thought to blame the OS because I thought any app that requests to play a sound or record a sound, would be re-directed by the OS to now use the bluetooth device.
I'm pretty sure it works exactly like this on windows. Or for example, I have a usb headset on my pc. It shows up as a soundcard. I make it the default and every app now uses that. No developer had to code to use a usb headset/mic, it just works.
Again a little disappointed that it's been a little trying just to get a bluetooth headset to function properly. I tried 3 at my friends that all pair fine and work flawlessly on his playbook in all his apps, and now I bought 1 so it's hard to say all of these bluetooth headsets have quirks and don't work properly with android.

Still trying to get this working. It pairs fine, and shows in the bluetooth details as being connected with phone audio and media audio.
It's a Aluratek ABH01F which I've read great things about. It supports a2dp. I'm not too familiar with bluetooth and microphones so I'm not sure if there is anything else to check for android to support a bluetooth microphone.
I don't know why I didn't think of it before but I tried google's voice search and it doesn't work either. I can hear the audio fine, just no mic.
Can anyone confirm if google's voice search works with their bluetooth mic? You probably have to walk out of the room to verify it's not the units mic that is picking it up obviously.

I'm not convinced bluethooth mics work at all on the nexus 7. I could chalk it up to my headset just doesn't place nice with the nexus 7 but again I tried 3 bluetooth devices at my friends. I found this post on another site:
Well, I got around to testing a bluetooth headset. single earpiece, Avantalk AH28. Not the best, but it works fine with a phone. Paired with the tablet fine. I dialed on groove ip - dial tones came from the tablet, the ringing transferred to the earpiece, when phone was answered there was no sound transmission at all- not from the bluetooth earpiece, or from the tablet. Just dead air. Tried it twice.
2nd test- google music played from tablet- not into the earpiece.
I have a stereo bluetooth headset with mic that I can test with but will have to charge that one up first. Will get back to you.
************************************************** ****
Got to my stereo Southwing SA505 bluetooth test. It worked to play music from tablet beautifully. Did not work with groove IP- went in and made sure settings were set for bluetooth- Mic did not work.
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http://www.nexustablets.net/forum/nexus-tablet-audio/985-does-headset-jack-have-microphone-capability.html
Again, I hear audio fine via bluetooth, so I wonder if some of you were thinking the bluetooth mic was working but it was actually the unit's mic.
This app called tapemachine specifically states it has bluetooth support. It fails for me when I change it to bluetooth in the settings, can someone else try it?
https://play.google.com/store/apps/details?id=com.samalyse.free.tapemachine&feature=nav_result#?t=W251bGwsMSwxLDMsImNvbS5zYW1hbHlzZS5mcmVlLnRhcGVtYWNoaW5lIl0.
So I'm starting to think my thread title is correct. If I am, I'm hoping there is a way to hack some file changing the available audio profiles. I've read others doing something similar with different devices when the manufacturer disable those audio profiles. I would find it doubtful that google/asus would do this though.
Anyway, if anyone can try that app, or confirm that say grooveip is using the bluetooth mic and not the device. An easy test is tap on the unit mic while recording and see if you or the person you are talking to hears that.

No one? I know a couple of you said it worked, but are you sure grooveip is actually recording via the mic? I can hear phone calls using various sip apps with bluetooth, but I know the mic isn't recording. One of the headsets my friend has is a Motorola MOTOROKR S9 Stereo Bluetooth Headphones. Link here: http://www.amazon.com/Motorola-S9-Bluetooth-Headphones-Packaging/dp/B0017KTOJK.
I've only tried stereo headsets, so maybe that is the issue. The Motorola HS850 is a single ear piece, I'm not sure what plantronics set you have.
I'd really appreciate if someone else can verify if bluetooth is working. If bluetooth recording in fact works with the nexus 7, I must be really unlucky with 4 headsets that don't, which I find highly unlikely or nexus 7 has poor bluetooth support. The only thing left is my bluetooth hardware is broken which I find even more unlikely. Aradreamer, you say you've seen several posts saying bluetooth works, but I haven't found one post explicitly stating bluetooth recording works. I found more post on other forums clearly stating it doesn't work.

sark666 said:
I'd really appreciate if someone else can verify if bluetooth is working. If bluetooth recording in fact works with the nexus 7, I must be really unlucky with 4 headsets that don't, which I find highly unlikely or nexus 7 has poor bluetooth support. The only thing left is my bluetooth hardware is broken which I find even more unlikely. Aradreamer, you say you've seen several posts saying bluetooth works, but I haven't found one post explicitly stating bluetooth recording works. I found more post on other forums clearly stating it doesn't work.
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odd odd ...
first off i have the Nexus 7 16g with it rooted.
heres what i did first i bought the samsung HM1200 didnt thoroughly test that 1 because i figured it just wouldnt work with the device ( or was broken ) once i started to get all this screeching out of it... i heard sound momentarily then all it did was the screeching at different levels. returned it yesterday. then i added a couple more bucks ( about $27 total ) and got the plantronics M20 took it home and crossed my fingers. got it all it paired up and what not and ended up with the same condition except now the mic is working perfectly. i tested this thoroughly now over and over inside and outside and also away from the N7 to be sure the mic is working. this is great BUT i cannot hear any sound at all coming in to the N7 except the same screeching at constantly varying levels. this is with both grooveip and talkatone. i also tried uninstalling beats audio and rebooting but i read somewhere this wont change the drivers back to the originals and i still have the same condition. i just got the N7 about 3 weeks ago and the store where i bought it has a price guarantee so i am today planning to return it and get the N7 again but this time the 32g version. ( they got 2 left so i will be going ASAP. ) so almost all the work i put into setting this thing up is about to be wasted. still i am going to do it anyways. to me its just the point of getting the best i can with my available budget/resources and i can easily see this thing be full and kicking myself in the butt for not doing it. this time around i will test all of what i mentioned here BEFORE i root it. in fact i will only install the necessary apps ( grooveip/talkatone etc.. ) during testing. its a real pain in the butt but it is a MUST i have this thing working as a phone with BT asap. thanks for the input and i will report back later.
update: actually in a more quiet room i was able to hear myself on the BT headset but very very low and in the background behind the screeching. still will report back later with the new unit.

For some reason the Bluetooth headset profile on the n7 is totally broken. I tried MANY headsets and none of them work. It is either the drivers, the hardware or the kernel. I hope it fixable in the 3g version.
Sent from my Nexus 7 using xda premium

yep i am sitting here now with the 32g N7 and the first thing i did was try the BT unrooted and its the exact same thing screeching like mad can hear myself on the mic perfect from the other phone and can hear the other phone low in the background of the screeching on the N7 ugh
i have a temporary solution that should work till its sorted.... i need a new headset for my computer anyways so ill just make sure to grab one that is USB then when my OTG cable arrives i am pretty sure that should work. it will be corded but at least i can use the phone somewhat normally for free. ill let you know. now im off to rebuild the whole thing back to where i had it in the 16.

zip1212 said:
yep i am sitting here now with the 32g N7 and the first thing i did was try the BT unrooted and its the exact same thing screeching like mad can hear myself on the mic perfect from the other phone and can hear the other phone low in the background of the screeching on the N7 ugh
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Bummer. Hopefully they fix it with 4.2 or with the 3G version.
It also seems that if you try to toggle speakerphone / BT headset in various voip apps the tablet will crash and restart.
I tried with GrooveIP, Talkatone and the build in phone app (After changing the framework-res.apk file).
I also noticed i had better luck getting the BT headset to fully (and randomly) work when doing outgoing calls. It never worked on incoming calls.

Any progress on this?
I've noticed the same problem and just returned a BT headset due to the problems in GrooveIP & Talkatone
As a side note I was able to get the BT headset to work as a MIC with the google voice commands by using the following..
- Soundabout
- Under BT settings set it to force mono BT mic
- Set audio to wired headset
Just as ref, I'm using my N7 in my car, so my setup may be a bit different.
But this worked, I was able to tell my N7 commands and it would read out the response over my car speakers.
Anyone had success with a USB mic? Curious if that will work.

I'm very interested in this thread too.
I have a 32GB nexus 7, rooted and unlocked. I have a Platronics M100 bluetooth earpiece. My goal is to be able to dictate to Evernote through the BT earpiece. It is pairing and under the connect settings it is showing up as "phone audio". But when I speak into it nothing is happening in Evernote. I also do not get media audio through the earpiece.

My Sony xperia Z accepts audio from bluetooth microphones, but only during a phone call.
When the call is terminated the paired bluetooth mic becomes inactive and the phones built in microphone takes over. I have tried many apps but none will accept audio from a BT mic.
I have tried a number of headsets and speakerphones and they all behave in the same way. Sound is not a problem as the BT speaker simply replaces the phones internal one when paired.
The xperia Z has a setting which claims to: " record audio through bluetooth headset if available", but this setting does nothing. I keep retrying the setting at every android update, to no avail. Currently at 4.2.2.
When I plug in a wired headset, the speaker and mic simply replace the ones in the phone. Why doesn't bluetooth behave in the same way?
This issue has been raised in many forums, in relation to many android devices, but never answered.

MK808B Bluetooth Sound Input Option?

Well I bought an MK808 last year and was pretty impressed with the little stick, so I decided to buy an MK808B this summer so I could use my BT headet/mic for Skype calls etc., as well as voice search functions...
I paired the headset and could hear audio from the MK808B but could not use the mic...
I'm somewhat frustrated that it doesn't appear to have an option to use BT as an input for sound - why this would be the case I have no idea as every other android device that I own with BT works perfectly,,,
Has anybody managed to get BT audio input working with an MK808B?

gtd2000 said:
Well I bought an MK808 last year and was pretty impressed with the little stick, so I decided to buy an MK808B this summer so I could use my BT headet/mic for Skype calls etc., as well as voice search functions...
I paired the headset and could hear audio from the MK808B but could not use the mic...
I'm somewhat frustrated that it doesn't appear to have an option to use BT as an input for sound - why this would be the case I have no idea as every other android device that I own with BT works perfectly,,,
Has anybody managed to get BT audio input working with an MK808B?
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I'm using USB Skype phone.
You could also try some USB sound card with audio out and mic in.

draskome said:
I'm using USB Skype phone.
You could also try some USB sound card with audio out and mic in.
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I hear what you are saying but the reason I bought the MK808B was to use BT for sound, seems strange that it doesn't work for mic input, there must be something that makes it work?
I've got Skype running on my MK808 using mic sound input from a Microsoft USB webcam but as it's hooked up to a 50" TV the mic is pretty far away when sitting on the couch.
Bluetooth was really the best option when using PC stick device....

Did you ever find a way to get a BT mic to wrk with your 808B plus?
I can't either.
Im in contact with the manufacturer.

SHIELD Remote - getting microphone to work in full Android

Hi all - is anyone here trying to the SHIELD Remote with full android rather than the stock firmware?
I am, and everything works (even volume control and headphone audio output!) except the microphone.
If anyone has any suggestions for how I could go about debugging the microphone input, I would very much appreciate it as it's the last thing preventing my setup from being perfect.
The message I see when I press the voice input button on the remote is "Can't open microphone" (screenshot at end of this post: http://forum.xda-developers.com/showpost.php?p=64552147&postcount=14 )
Android is clearly just not recognising it as an audio input device, but I'm not sure why.
My guess would be that the stock firmware has a kernel module loaded or some modification to the Android bluetooth stack to support bi-directional A2DP devices rather than just one way.
Has anyone here ever seen Android working with a bluetooth device with audio input? Perhaps a bluetooth headset with microphone? Does that use A2DP?

Hi there, any progress ? trying to find some solution for the same problem!

andrewthecoder said:
Hi all - is anyone here trying to the SHIELD Remote with full android rather than the stock firmware?
I am, and everything works (even volume control and headphone audio output!) except the microphone.
If anyone has any suggestions for how I could go about debugging the microphone input, I would very much appreciate it as it's the last thing preventing my setup from being perfect.
The message I see when I press the voice input button on the remote is "Can't open microphone" (screenshot at end of this post: http://forum.xda-developers.com/showpost.php?p=64552147&postcount=14 )
Android is clearly just not recognising it as an audio input device, but I'm not sure why.
My guess would be that the stock firmware has a kernel module loaded or some modification to the Android bluetooth stack to support bi-directional A2DP devices rather than just one way.
Has anyone here ever seen Android working with a bluetooth device with audio input? Perhaps a bluetooth headset with microphone? Does that use A2DP?
Click to expand...
Click to collapse
Just to answer last part.
Bluetooth headsets, mono as well as stereo, work fine on full android rom. Including microphone.
Btw, it is controlled in phone sections (headset) of the bluetooth stack and not a2dp which is headphone profile.
Google and by extention nvidia, have changed something in handling microphone from the remote, and that change is probably closed source.
Note 5 ?

Thanks for the heads up Idan73, I've actually since figured out the same thing by connecting a friends bluetooth headset to my NSTV (it worked fine).
I'm going to dig into the original nvidia rom and see if it's something simple like a system APK which is handling the remote audio input.
I assume it isn't in the kernel as I believe zulu99's full android ROM is already using the same untouched kernel from nvidia.

H96MAX Bluetooth microphone not working

Hi,
I have a H96 Max android box, with Android 9.0, CPU : RK3318.
I'm having hard time using by Bluetooth headset, as the microphone does not work.
I have used Sony SBH80 and Sony WH1000XM3 headsets. Pairing works, audio output works, but the mic doesn't.
I have made a couple of tests, including some web audio testing pages in chrome, apps like Mic test from Play Store and also in google assistant. The most information I've got from the Mic test app, as it shows red and green status when a device is on. And in fact, when the recording using the BT headset should take place, the LED is green, but there is no sound being recorded.
I have tested both headsets with a OnePlus5 and on both the mic works normally.
I have also connected a USB mic to the H96 and it also works fine, sound is recorded.
So the problem I think is that the level of the sound input from the BT mic on the H96 is 0.
I have looked into /etc/mixer_paths.xml and also into /vendor/etc/audio_policy_configuration.xml but I don't see anything suspicious there.
Can anyone help?
BR,
Astagor

Also, if anybody could recommend an Android TV box on which the Bluetooth headset works (both audio out and microphone) I would be very grateful. The requirements I have for the box are: Google Play Store works, it has an ETH connector. The rest is not so important. I want to use 6 boxes to make a constant WebRTC connection between them using Chrome. The users would use the BT headsets to pick them up and to communicate.
Thanks!

I have bought 3 more boxes:
T95 max+
T9
MX10+
on none of these devices the headset mode works properly.
The closest to working was the T95max+, it discovered properly the BT headset, but when in communication mode, the mic did not work either.
I have tested the headset with 3 other android phones, and there it works out of the box.
So I guess all 4 Android TV boxes I have tested fail to have the correct setting for BT headsets.
Anyone got this to work on a box?

Microphone not detected in t9 tv box
I am too experiencing the same problem, if anyone have a solution please share it thanks in advance