bluetoth call voice is lacking. android 4.4.2. - Android Q&A, Help & Troubleshooting

Hey guys,
I just bought the IMACWEAR SPARTA M7 smart watch. It runs android 4.4.2.
There is a critical problem that makes me not being able to use it.
The bluetooth call audio isn't sounding at all. Bluetooth media sounds great. Only the call sound is lacking.
The headset I was trying to use is JAWBONE ERA HD bluetooth headset.
I tried two other b.t devices and they work well but their sound quality isn't good enough for me.
The JAWBONE ERA headset is working well on couple different devices.
The smart watch isn't rooted.
I tried asking my quastion on imacwear m7 thread but no answer.
I believe the problem is in the android 4.4.2 system. maybe something with b.t drivers.
Does someone know how to fix it?
If not, I'll need a developer to address my problem specially and fix it. i'm willing to pay for the service.
Appreciate any help...
Thanks.
Moshe.

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am i getting a lack of response because this is trivial to do?... maybe no one else interested in doing this?.... cant be done?
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Galaxy Nexus (4.2.2) Bluetooth not working with my car!

Hi everyone,
I own a Chevy Camaro SS 2012 that has Bluetooth handsfree built in. Works like a charm with my friends LG phone with Android, as well as with my company iPhone 4S.
But with my Samsung Galaxy Nexus running native Android 4.2.2 it will pair just fine, but I am only able to hear the sound and use the mic in the car, but not engage any functions nor access the contacts list. So I cannot answer calls, or make new ones etc...
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[Mate 10]Bluetooth Audio Unbearable Crackling Noise, Tested, Coming from the phone

ALP-L29 8.0.0.129 (C185) (Problem presisted throughout the updates)
Hi everyone
Since the very first time I used my bluetooth earbud(These are good earbuds that I've been using for a good amount of time to know that they aren't the problem) with my Mate 10, I could hear an easily recognizable crackling noise on "loud" songs e.g the ones with drums, even on low volume.
I tested different recievers; Bass boosted headphones/earbuds, "Hear what the artist wants you to hear A.K.A Studio" headphones/earbuds, speakers and even car recievers, They ALL have the same noise.
I tested in every environment with and without other BT devices active and with different music files and music player apps and nope, the noise seems to be originating in the phone,I even went back to Huawei's representative retailer where I bought the phone and checked their "sample" Mate 10 and I could hear it there too.
Now the headphone jack quality works fine and really is more than enough for a daily driver. I fiddled with the BT audio settings in developer options and they seem like they are automatically set according to the reciever, but even then it shouldn't set the bit depth to 16 bps (Or should it?).
My guess is that there is some faulty (presumably software) gain booster that's causing the BT DAC to "cut" the spectrum at frequencies above 6-8 Khz as those are first to get damaged in such cases AND that the bass is pretty good
If you have access to a BT audio device (preferably headphones because you gotta pay attention to speakers sounds especially low quality or bass boosted ones) could you please check if you experience the same problem? I already emailed Huawei maybe if it's a widespread problem they can give a solution
TL;DR Mate 10 BT audio extremely noisy,Jack audio fine, Tested in every environment with different music files and music players and BT recievers (Headphones and speakers) and with another Mate 10 device, The problem seems to be coming from the phone, Any suggestions? Can you please confirm and ask Huawei to fix it?
RasaKh said:
ALP-L29 8.0.0.129 (C185) (Problem presisted throughout the updates)
Hi everyone
Since the very first time I used my bluetooth headphones (These are high quality headphones that I've been using for a good amount of time to know that they aren't the problem) with my Mate 10, I could hear an easily recognizable crackling noise on "loud" songs e.g the ones with drums, even on low volume.
I tested different recievers; Bass boosted headphones, "Hear what the artist wants you to hear A.K.A Studio" headphones, speakers and even car recievers, They ALL have the same noise.
I tested in every environment with and without other BT devices active and with different music files and music player apps and nope, the noise seems to be originating in the phone,I even went back to Huawei's representative retailer where I bought the phone and checked their "sample" Mate 10 and I could hear it there too.
Now the headphone jack quality works fine and really is more than enough for a daily driver. I fiddled with the BT audio settings in developer options and they seem like they are automatically set according to the reciever, but even then it shouldn't set the bit depth to 16 bps (Or should it?).
My guess is that there is some faulty (presumably software) gain booster that's causing the BT DAC to "cut" the spectrum at frequencies above 6-8 Khz as those are first to get damaged in such cases AND that the bass is pretty good
If you have access to a BT audio device (preferably headphones because you gotta pay attention to speakers sounds especially low quality or bass boosted ones) could you please check if you experience the same problem? I already emailed Huawei maybe if it's a widespread problem they can give a solution
TL;DR Mate 10 BT audio extremely noisy,Jack audio fine, Tested in every environment with different music files and music players and BT recievers (Headphones and speakers) and with another Mate 10 device, The problem seems to be coming from the phone, Any suggestions? Can you please confirm and ask Huawei to fix it?
Click to expand...
Click to collapse
I have no problem with bluetooth headset on firmware 129-C432.
Which headset do you use?
Hi I tested two different Bluetooth headphones. One cheap headset from Amazon and Sony SBH-52. No crackling noise with both of them. Also I used the M10P with my cars stereo yesterday. No crackling, too.
I'm on 129(C432).
sonydesouza said:
I have no problem with bluetooth headset on firmware 129-C432.
Which headset do you use?
Click to expand...
Click to collapse
Thanks for the response
Well as I said I tested 3 or 4 different earbuds from a cheap Chinese brand (AWEI) to a NuForce
What's yours?
I just hope it's not a hardware problem
RasaKh said:
Thanks for the response
Well as I said I tested 3 or 4 different earbuds from a cheap Chinese brand (AWEI) to a NuForce
What's yours?
I just hope it's not a hardware problem
Click to expand...
Click to collapse
I have Bluetooth Jabra headset.
Works fine.
Same problems here ALP29 C636 with 131 build (with 128 was everything fine) Tried every damn setting in equalizer and couldnt make it better. I think fix is coming with 133 build. I am using Jaybird x3 and bt in car. It seems like is on some songs bitrate like from 2001.
There is a very long thread on a German board:
https://www.android-hilfe.de/forum/...0-pro-android-8-bluetooth-problem.853624.html
Basically, the bluetooth issues come from the software and since release of the Mate 10 Pro, Huawei has done nothing to fix them.
What music player are you using? I have a Mate 10 ALP-29 on 131 and have no problems with Bluetooth sound on any number of speakers, cars, headphones, etc. I use PowerAmp beta and tend to leave the equalizer off.
Omg I just came here to post the same thing.
So I'd a Beats X for a day or so, and sent it back, cause, weird clipping and cracking with BT audio.
Got a X3 again, and same problem, but I know this isn't a problem with the X3, so I commented the X3 to another device and I got flawlessly audio.
Hopefully Huawei does something to address this.
tr1cky1 said:
There is a very long thread on a German board:
https://www.android-hilfe.de/forum/...0-pro-android-8-bluetooth-problem.853624.html
Basically, the bluetooth issues come from the software and since release of the Mate 10 Pro, Huawei has done nothing to fix them.
Click to expand...
Click to collapse
https://consumer.huawei.com/en/contact-us/
Could you please send them a complaint? Maybe if we push it a bit they'll fix it
Luinwethion said:
Omg I just came here to post the same thing.
So I'd a Beats X for a day or so, and sent it back, cause, weird clipping and cracking with BT audio.
Got a X3 again, and same problem, but I know this isn't a problem with the X3, so I commented the X3 to another device and I got flawlessly audio.
Hopefully Huawei does something to address this.
Click to expand...
Click to collapse
Could you please send them a complaint? Maybe if we push it a bit they'll fix it
https://consumer.huawei.com/en/contact-us/
djstalca said:
Same problems here ALP29 C636 with 131 build (with 128 was everything fine) Tried every damn setting in equalizer and couldnt make it better. I think fix is coming with 133 build. I am using Jaybird x3 and bt in car. It seems like is on some songs bitrate like from 2001.
Click to expand...
Click to collapse
Could you please send them a complaint? Maybe if we push it a bit they'll fix it
https://consumer.huawei.com/en/contact-us/
RasaKh said:
Could you please send them a complaint? Maybe if we push it a bit they'll fix it
https://consumer.huawei.com/en/contact-us/
Click to expand...
Click to collapse
They don't care.
After they didn't do anything for months, I spoke with them on live chat daily.
Always with the result that they would forward it to Huawei, but nothing happens.
At this point I am considering to get the German consumer protection agency involved.
Huawei doesn't care at all, they just happily release new devices.
I thought maybe with the USA launch they would fix the problems because now there's a whole new customerbase that can complain, but apparently even now nothing happens.
djstalca said:
Same problems here ALP29 C636 with 131 build (with 128 was everything fine) Tried every damn setting in equalizer and couldnt make it better. I think fix is coming with 133 build. I am using Jaybird x3 and bt in car. It seems like is on some songs bitrate like from 2001.
Click to expand...
Click to collapse
Why do you think it'll be fixed in 133?
So, I contacted Huawei NL about it... Via the live chat.
Sadly I guess that this is what we have to put up to with big companies like that.
The same story:
Guy asks if I have tried resetting the phone already.
I say yes, and state that this seams a major software bug.
To what his "intelligent" answer was:
We are expecting a new update to role out and fix your problem. Bla bla bla bla
Of course to the question of what's the update number, he couldn't answer that.
So in other words, he was just stalling.
Since Huawei NL isn't responsive on social media, I've contacted Huawei UK / DE (with my broken German) and the official EMUI Twitter account.
I've also sent a mail to [email protected] and [email protected]
Although little hopes here...
If they don't fix it in a timely manner, I'll be seriously looking for other options, hopefully Nokia get their camera game together, it was the main reason I didn't go with the Nokia 8.
It's shameful that they take the headphone jack out on the Pro variant and don't even bother to check if BT audio is working.
And if Huawei won't do anything about it, there won't be much hope, the phone is far too exotic for any major tech publication to make noise about it...
I actually got a answer from Huawei UK!
Dear, Thank you for contacting UK Huawei Customer Care Support. We are aware about the current situation regarding the Bluetooth headphones and the distorted noise that can be heard when connecting to our Mate 10 Pro devices. We are actively looking into a situation for this matter and escalating every case we capably can to our IT Department. Thank you for bringing us to our attention and providing the IMEI numbers of your device. We will escalate your report at once. Hopefully, with an upcoming update, the Bluetooth headphones distorted noise situation we are currently facing for our Mate 10 Pro devices will be fixed in an instant. We deeply appreciate it as we are seeking constant feedback from our customers and in order to improve we need your opinion. Please do not hesitate to contact us again if you seek further assistance. We hope the above information proves to be of use. Should you need further assistance, feel free to write to us. Best regards, Tanna Huawei Customer Care Support
Luinwethion said:
I actually got a answer from Huawei UK!
Dear, Thank you for contacting UK Huawei Customer Care Support. We are aware about the current situation regarding the Bluetooth headphones and the distorted noise that can be heard when connecting to our Mate 10 Pro devices. We are actively looking into a situation for this matter and escalating every case we capably can to our IT Department. Thank you for bringing us to our attention and providing the IMEI numbers of your device. We will escalate your report at once. Hopefully, with an upcoming update, the Bluetooth headphones distorted noise situation we are currently facing for our Mate 10 Pro devices will be fixed in an instant. We deeply appreciate it as we are seeking constant feedback from our customers and in order to improve we need your opinion. Please do not hesitate to contact us again if you seek further assistance. We hope the above information proves to be of use. Should you need further assistance, feel free to write to us. Best regards, Tanna Huawei Customer Care Support
Click to expand...
Click to collapse
Looks like a pre-drafted text.
So a quick update,
I just installed the B131 for C432 via FF.
In my (not scientific at all) test with my Jaybird X3, the audio sounds less broken although still a bit awkward when compared with a 3T and the same headphone.
Nou I just realised, that no matter what I do, I cannot choose AAC as BT codec.
I choose AAC, and as soon as I turn BT on It changes back to SBC.
Switching with BT on won't work, doesn't matter if headphones are connected or not.
On the OnePlus, it chooses AAC by default with my X3, and I can change codecs on the fly while listening to music.
I have the exact same problem and it goes away only if i play with sample rate and bits per sample. So frustrating.
A bit of a update.
Last week I was on LOS, and BT audio worked flawlessly, had no troubles at all and AAC codec worked.
Good news: it's neither a hardware or kernel issue
Bad news: remember when Huawei said that they were aware of the problem? Well, email I received today doesn't give much hope of them being aware of this.
From [email protected]
Thank you for contacting Huawei Customer Care.
In order to better assist you with the issue you are experiencing please answer the below:
1) Please tell us the detail brand, model of the Bluetooth headphone? such as Honor Xsport AM61 bluetooth headset
2) What's the build number of cellphone?(Settings->System->About phone->Build number)
3) What's your issue scenario? such as music sound noise or phone call noise, etc.
4) How often does this issue happen?
Looking forward to your reply,
Huawei Customer Care Team
Click to expand...
Click to collapse
I'm curious to know if other EMUI 8 devices have the same problem, like the Honor V10.

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