[Q] Random bluetooth issue, any input would be appreciated! - Redmi K20 Pro / Xiaomi Mi 9T Pro Questions & Answe

Hey guys, Merry Christmas!
Out of the blue as I was riding my bike somewhere with GPS on and Bluetooth connected to my speaker everything was going fine.
I got where I supposed to be, the connection was fine and all.
When I wanted to return though, the Bluetooth speaker just wouldn't connect.
I tried turning both the speaker and the phone on and off but nothing changed.
Messed a bit with the developer settings but again nothing changed.
Tried to connect to a few more speakers I have and none connected.
My BFF has the same device and his device connects just fine to my speakers, my device just refuses.
It does *technincally* connect but it says Connected (no media), which is obviously useless in my case because the audio players from the phone's speakers and not the external ones.
For some weird reason, it does connect and play though to my car's Bluetooth. (Seat Ibiza 2020 MY not as it matters)
I changed a few roms and one weird thing I noticed when I was running POSP I think was in the dev options, Bluetooth mode, everything was greyed out besides default.
That's pretty weird if you ask me, I mean SBC AAC and some others *should* be available right?
So my concern is I'm facing a firmware/hardware issue, unfortunately, maybe some persist.img problem?
I ended up flashing with mi flash tool the latest miui 12 europe and global roms without luck, and now I'm in the middle of flashing the Chinese one just in case.
Has anything similar happened to you?
How did you fix it?
I cannot for the life of me find a solution and think about giving up and sending it for repair.

Well after trying lots of roms and whatnot (I even went back to MIUI 10, Android 9) I found out that If I try to connect with my speakers as the first device it won't connect, if I connect to my car or my Airdots and then try to connect to my speakers then it does indeed connect.
I cannot comprehend why this behaviour exists, but at least it is persistent if I don't reboot and I only need to this on the first pairing.
I guess problem solved...?
(it should be able to connect normally, but that workaround is good enough I guess)

Related

[Q] Car hands free - problems

Hi guys,
I am having problems with car BlueTooth hands free and Samsung Galaxy S:
With Eclair 2.1 it was working flawlesly, connected automaticlay after paired, I could make phonecals, receive phonecals, no quality issue, phonebook worked fine etc... The only problem was that once I did not swithced the BT on my SGS before starting to drive, for some security reasons the car was not searching for phones while driving, so I had to turn the BT in car off and on again and then it connected well. But overal problem free...
With latest 2.2 Froyo (i9000xfjp7) and also previous Froyo distributions (i tried JPA if I remember correctly), the phone can be paired, it connects to the car but after one phonecall it looses connection and works no more. The strange thing is, the BT icon on the phone shows brackets (like when connected) and also the car shows the phone is still connected. But phonecalls cannot be made via car HF and also cannot be received through it. Only by manualy accepting or dialing on the phone. And naturally the sound goes only via the phone, no HF.
The strange thing is, when I turn off the car and leave it, the phone says it is still connected to it, which is impossible.
Any ideas?
Thank you!
czechmate said:
Hi guys,
I am having problems with car BlueTooth hands free and Samsung Galaxy S:
With Eclair 2.1 it was working flawlesly, connected automaticlay after paired, I could make phonecals, receive phonecals, no quality issue, phonebook worked fine etc... The only problem was that once I did not swithced the BT on my SGS before starting to drive, for some security reasons the car was not searching for phones while driving, so I had to turn the BT in car off and on again and then it connected well. But overal problem free...
With latest 2.2 Froyo (i9000xfjp7) and also previous Froyo distributions (i tried JPA if I remember correctly), the phone can be paired, it connects to the car but after one phonecall it looses connection and works no more. The strange thing is, the BT icon on the phone shows brackets (like when connected) and also the car shows the phone is still connected. But phonecalls cannot be made via car HF and also cannot be received through it. Only by manualy accepting or dialing on the phone. And naturally the sound goes only via the phone, no HF.
The strange thing is, when I turn off the car and leave it, the phone says it is still connected to it, which is impossible.
Any ideas?
Thank you!
Click to expand...
Click to collapse
Had exactly same issue I changed to Doc Rom JP8, for last 3-4 days didn't face any issue.
Monu123 said:
Had exactly same issue I changed to Doc Rom JP8, for last 3-4 days didn't face any issue.
Click to expand...
Click to collapse
That is weird... When I switch back to Eclair, it works OK, back to Froyo, no HF after one phonecall...
I dont know how to work with ROMs, I managed to find out how to flash firmwares, I even handled many problems with Odin and its moods, incomplete flashes, etc... But I dont know how to use these custom ROMs...
Anyway, i would appreciate if someone told me how to resolve it without custom ROMs, as I plan to use offical Froyo when it becomes available, but with this issue, it is useless for me, as I travel a lot...
No one else?
I'm having a related problem.
I'm getting music stream cut outs (1 sec max) when streaming bluetooth to caraudio WHILE wifi on.
If i disable wifi, bluetoothaudio works fine. I know they share range bt/wifi, but this is unacceptable. They should negotiate. Everytime wifi scans, i get cutouts. Unusable. Only workaround is disabling wifi (and thats annoying because i have to be constantly activating/disabling it everytime i enter somewhere with wifi etc.
Using Docrom xxjpo v8 with voodoo.
Anyone has some software fix that makes wifi behave better when bluetooth musictream on?

[Q] Bluetooth Connection Issue (Redux)

Hey All,
I've done a quick and dirty search for this problem, but I haven't found anything that's exactly the same.
I have an XT1060, Dev Ed, on KK 4.4.4, and I'm just wondering, am I the only one who cannot get my bluetooth radio to hook up to paired devices easily?
The problem is, I always have to ask to connect manually; this is a bit of a pain, especially after turning off my car, say, for a few seconds. Oh, it'll connect, but sometimes it takes 10-15 tries before that connection is made, and even then, it's often after I have to disconnect then attempt to reconnect a few times because it doesn't connect both the phone and media modes.
I have done the unpair/re-pair thing a couple of times, but nothing changes.
I had an HTC phone before this, and it'd reconnect automagically to my cars BT server, so I suspect it's nothing to do with the car's BT radio. I really miss that...
Thanks for any suggestions anyone might have in how to remedy this. Fwiw, I'm willing to go through a diagnostic procedure if someone would clue me in to just how to do that.
cheers,
john
I've had issues with the bluetooth and pairing. When I was on 4.2.2 (I think..) it wouldn't connect automatically at all, and I used an app to connect for me. I have a Chevrolet Cobalt and it wouldn't connect to my built in bluetooth for calls or a small bluetooth dongle that I use for playing music through the AUX input on the stock radio.
https://play.google.com/store/apps/details?id=org.myklos.btautoconnect&hl=en
Once I was on 4.4.2 it seemed to work much better. I have no real issues now on 4.4.4. The only time I notice it not really working right is when I try to connect to the bluetooth speaker in our bathroom at home. If I turn the speaker on, it almost always connects to my girlfriends phone nearly instantly, even though I open the bluetooth menu and tap the paired device to manually initiate right when I turn on the speaker. It usually takes me a few tries to get mine to connect before hers, or I ask her to shut her bluetooth off for a moment while I connect. She uses the speaker every day because she leaves for work after me, so it only happens to me 1-2 times per month on the off chance that I want to listen to music or a baseball game in the shower, so it never really bothered me much.
I think the bluetooth radio in this phone could be better.. I never had any similar issues with my Droid X or Moto Razr Maxx so I'm not sure what the deal is...
Edit: forgot to mention I also have an XT1060, but not dev edition. My bootloader is unlocked and I am rooted, but using the official 4.4.4 VZW rom with Xposed.
I have never had any issues pairing Bluetooth - on either my car or moto 360 watch (even simultaneously).
However, I have noticed that the Bluetooth connects much quicker on custom ROMs when compared to stock.
I think tour connection issue may be a setting or rogue app related.
Sent from my Moto X using XDA Free mobile app
Thanks to both of you for your replies!
Fwiw, things have not gotten any better since I posted my question. I'm getting more accustomed to it, though.
As for the possibility of a rogue app, yes I suppose so, but short of uninstalling everything, and adding them one by one and trying to connect to something via BT, how can someone go about debugging such a thing?
cheers,
john
jrredho said:
Thanks to both of you for your replies!
Fwiw, things have not gotten any better since I posted my question. I'm getting more accustomed to it, though.
As for the possibility of a rogue app, yes I suppose so, but short of uninstalling everything, and adding them one by one and trying to connect to something via BT, how can someone go about debugging such a thing?
cheers,
john
Click to expand...
Click to collapse
You may need to delete the profile for the Bluetooth pairing in your car. Could be a conflict there.
Otherwise, try looking at your Bluetooth settings on the phone.
Sent from my Moto X using XDA Free mobile app
jrredho said:
...
I have an XT1060, Dev Ed, on KK 4.4.4, and I'm just wondering, am I the only one who cannot get my bluetooth radio to hook up to paired devices easily?
The problem is, I always have to ask to connect manually; this is a bit of a pain, especially after turning off my car, say, for a few seconds. Oh, it'll connect, but sometimes it takes 10-15 tries before that connection is made, and even then, it's often after I have to disconnect then attempt to reconnect a few times because it doesn't connect both the phone and media modes.
Click to expand...
Click to collapse
Is it *ALL* bluetooth devices, or just the car? What model and year car? Are you connecting to the Hands Free profile, Headset Profile, or doing something like A2DP for music streaming?
How long have you had the phone, how long has this been a problem? Has the symptom ever changed?
Keep in mind, just because your HTC phone connected to the car just fine, doesn't mean the car could not be the issue. While the Bluetooth profiles and protocols should be "standard" I've seen many issues of interoperability issues between bluetooth devices over the years. Especially with car kits.
KidJoe said:
Is it *ALL* bluetooth devices, or just the car? What model and year car? Are you connecting to the Hands Free profile, Headset Profile, or doing something like A2DP for music streaming?
How long have you had the phone, how long has this been a problem? Has the symptom ever changed?
Keep in mind, just because your HTC phone connected to the car just fine, doesn't mean the car could not be the issue. While the Bluetooth profiles and protocols should be "standard" I've seen many issues of interoperability issues between bluetooth devices over the years. Especially with car kits.
Click to expand...
Click to collapse
Guys, thanks for staying with me on this. One thing I've definitely learned is that the bluetooth thing is something I'm pretty ignorant on. I can see that I'm going to have to study it a bit before too long. Gad, that HTC spoiled me rotten---at least in that way.
I haven't tried the phone with any other BT devices. This is mostly because I don't own but two, the car and a travel speaker, and I haven't had the speaker out of its case since I scored the phone six or eight weeks ago. Also, I did some housecleaning, so I have only a small fraction, maybe 20%, of the same apps on the MotoX that I had on the HTC. I have no apps on the MotoX that I didn't have on the latter.
As for some of the car-related suggestions, it's a 2015 Subaru Forester Premium 2.5i, which is really only level up from the base model of that line. I can't find that there is a bluetooth profile setting in the car that I can change; I think that it's too basic. The relevant user manual simply states the following:
Media format
Bluetooth audio devices cannot be
connected if they are not compatible with
the following Bluetooth® profiles.
. A2DP (Advanced Audio Distribution
Profile)
. AVRCP (Audio/Video Remote Control
Profile)
I don't even know what either of those mean!
Anyway, what I did do is go to the phone settings, and uncheck the Media box that shows up once the car's BT server is detected. Then I try to connect with the Phone box checked. It'll still fail to connect several times, but (a) it doesn't take as long to fail to connect, (b) it doesn't take as many tries (it seems) to make the connection, and (c) when it fails, it fails totally, so I don't have to disconnect from 'Media-only Connected (No Phone)' connection. That makes it easier I suppose. Then once the connection is established, it's a simple matter to go back to settings, and check the Media box. That add-on connection happens pretty quickly, but the process is still a little overwrought, imo.
Of course, KidJoe, up until you mentioned a Headset Profile, I didn't know one existed. But when I try to play music on my phone using PowerAmp, well, the app doesn't hook up to the BT anyway. That's a key difference between the HTC and the MotoX. In PowerAmp, I have "Play over Bluetooth on Detection" selected. The headset isn't being detected at all. So maybe that goes some distance to explaining what I'm encountering.
Again thanks to both of guys for hanging in there with me! I'll keep trudging "onward through the fog," as it were...
cheers,
john
A2DP and AVRC are used for Bluetooth Stereo audio streaming (like playing Pandora on your phone via your car stereo). Not phone calls.
For phone calls, usually a Headset or Handsfree profiles are used, and sometimes BT Phone Book Access (so you can see your phone's contact names/numbers on the car's screen).
I've run into compatibility issues between some phones and some Headset/Handfree devices (mostly cars, but a few bluetooth headsets too). Often times when this happens, you're stuck. Each side will blame the other (i.e. Moto will blame the Subaru car stereo, and Subaru will blame the phone).
I have had issues re-connecting to my car (a 2011 Saab 9-4x with Bose/Nav), IF I had my Moto S11 Flex HD headset connected to my Moto X before I got in the car (even if the S11 was powered off/disconnected from the X before I started the car). Usually toggling the X's bluetooth off/on, and sometimes worst case rebooting the phone, has always fixed it.. Another time I had troubles connecting to my Saab's car kit was when my wife was using her phone to stream audio. The next time I got in the car, I had to manually connect my phone. The car always tries to connect to the the last phone used, so it was looking for my wifes and it took a while before it timed out. When it did time out, it didn't look for mine.
Since you have a 2015 Subaru, I would consider visiting your car dealer, ask them to help with pairing the phone properly, and making sure its working right. See what they have to say.
My bluetooth in my car stopped pairing the other day, and it turns out it was an app that updated and requested permissions related to bluetooth. I didn't notice them because it's an app I trust so I accepted the new permissions without really looking at it.
I used App Settings (Xposed module) to disable the permissions and my bluetooth works fine again.
I could still pair with things if I went to the bluetooth paired device list and manually tapped on the device I wanted to connect with, but it would not pair automatically (like when I got in my car). Once I disabled that permission, it started working again without issue.
May be worth a look through your installed apps to see if anything has access to bluetooth and may be interfering.
Hey All,
Thanks again for the continued help!
It's true, I didn't do any research on app interference before I posted this thread topic, but since a couple of you have brought it up, I decided to do a little research. I installed a permissions app, and took a look at the permissions that allows an app to automatically seek out, and pair with, Bluetooth servers. I have to admit, I got some surprises there. (Who would've thought that Beautiful Widgets needed that permission; it is now gone.)
Anyway, most of the remaining apps are either system/Moto-related, or ones I would really like to keep. I'll report back on what I learn. If there are other permissions that I need to reference besides the two pairing-connecting to Bluetooth ones please let me know...
cheers,
john

Bluetooth issue

This issue isn't new to the N6.. I had it with the N4 and N5 as well, but haven't had it addressed so far.
I've got 3 devices paired with my phone, a bluetooth ear piece for calls, my car audio system, and a sound bar. Each time I turn BT on to connect to a device different from the last one, I have to go into settings and touch the device I want to connect. It won't automatically connect to anything, unless it's the same device it was last connected to.
Is this normal behavior? If not, has anyone gotten it to work properly?
So, is this too uninteresting a topic, am I the only one experiencing it, or does it just not bother anyone else?

Nokia 8 Bluetooth unusable with Airpods. Anyone else?

Just to open with this - I really like this phone and have been enjoying using it. Aside from the fairly poor WiFi range and the flaky NFC it is otherwise a really nice phone. There's just one other issue I have which is extremely frustrating:
I can't use it with my Airpods. Or at least, I can connect it but at some point the sound will crackle and cut off. If I wait it will occasionally crackle and come back on again but will cut in and out in a way that would drive anyone mad. I've tried fiddling with Bluetooth settings in developer options but it doesn't seem to make any difference. I've even tried a factory reset.
The Airpods work absolutely perfectly with every other device - no issues with the iPhone (expectedly) nor the S8, G6 or even my laptop. I can't 100% rule out a fault with the Airpods but given these facts it seems highly unlikely.
I wondered if anyone else used Airpods and had experienced issues and found a solution.
Not too interested if you've had no issues with your device, nor what you think of Airpods - I just want to see if I can get to the bottom of this, or the Nokia will have to go back.
Many thanks
Similar problem
Got a similar problem with my apt-x receiver.
Every few minutes the connection drops for a very short time.
The airpods don't support apt-x, but maybe it's the same problem.
My receiver shows a connection via apt-x, , but you can't find any apt-x support in the Nokia 8 specs.
But I had no problems with a friends portable speaker (non-apt-x).
I went back to cables
damian101 said:
Got a similar problem with my apt-x receiver.
Every few minutes the connection drops for a very short time.
The airpods don't support apt-x, but maybe it's the same problem.
My receiver shows a connection via apt-x, , but you can't find any apt-x support in the Nokia 8 specs.
But I had no problems with a friends portable speaker (non-apt-x).
I went back to cables
Click to expand...
Click to collapse
I’m wondering if the Nokia 8 just has rubbish connectivity, generally. If the Bluetooth chip is part of the WiFi chip then this would figure as it has the worst WiFi connectivity I’ve seen in recent years
Are you running Nougat or Oreo? From what I've heard, a lot of the bluetooth issues have been fixed in Oreo.
leoni1980 said:
Just to open with this - I really like this phone and have been enjoying using it. Aside from the fairly poor WiFi range and the flaky NFC it is otherwise a really nice phone. There's just one other issue I have which is extremely frustrating:
I can't use it with my Airpods. Or at least, I can connect it but at some point the sound will crackle and cut off. If I wait it will occasionally crackle and come back on again but will cut in and out in a way that would drive anyone mad. I've tried fiddling with Bluetooth settings in developer options but it doesn't seem to make any difference. I've even tried a factory reset.
The Airpods work absolutely perfectly with every other device - no issues with the iPhone (expectedly) nor the S8, G6 or even my laptop. I can't 100% rule out a fault with the Airpods but given these facts it seems highly unlikely.
I wondered if anyone else used Airpods and had experienced issues and found a solution.
Not too interested if you've had no issues with your device, nor what you think of Airpods - I just want to see if I can get to the bottom of this, or the Nokia will have to go back.
Many thanks
Click to expand...
Click to collapse
I wonder if yours is wonky, my Wi-Fi is excellent and i get get 75Mbit down 19Mbit up over 5Ghz through 2 brick walls, a floor up and at the opposite end of the house, i have not missed any payments using contactless via NFC and Bluetooth works fine via an Anker Bluetooth speaker and my JBL Bluetooth headphones.
Sorry for digging an old thread, but I still have the same problem even after a bunch of software updates.
My issue with the AirPods is that they do not work after they connect. I take them out of the case, they connect (as expected), but as soon as I start playing something the music/video pauses and the sound switches to speaker (if I press play again it plays out loud). To make them work I need to go to bluetooth settings, disconnect them and connect them again. Then they will work almost flawlessy (minor intrerruption from time to time).
I have no issue with other BT speakers. I also use the AirPods with an iPad and laptop and no issues there.
My Nokia 8 software is up to date. AirPods firmware the same (checked on the iPad).
I tried re-pairing after each software update. I tried changin BT settings (absolute volume - dev settings; contact sharing and HD Audio: AAC) but no improvements.
Any ideas what else can I try?
Search for Oreo and Bluetooth problems. It seams to be a general issue for this Android Version. I have problems connecting my Phone with the car, too.

Bluetooth issue with Audio-Technica m50xbt Headphones

Hello everyone,
Since I got my new pair of Audio-Technica m50x Bluetooth headphones (Bluetooth 5.0 version), I started having issues with the Bluetooth connection of my OP3T.
The bt connection experiences a turn on/off loop while trying to connect to the headphones. It happens sistematically as soon as the headphones battery drops below 75% approximately. No issues when the headphones are fully charged.
I have tried to connect the headphones to different devices, and they work without problems.
The only way to make the Bluetooth connection work, is to deselect 'Phone audio' in the settings of the paired device. But by doing so, I would need to give up using the headphones for calls.
I have always connected different Bluetooth devices (always 4.2 version) to my OP3T without any issues.
I have tried to wipe cache, reset network settings and even a complete factory reset. But no success.
I have the latest stock OxygenOS.
I believe it is a Bluetooth problem of the OP3T, since I have tested the headphones with different devices and they have always worked fine.
More Oneplus 3t users are sharing the same problem(cannot post links yet), but no solution has been found yet:
Similar topic in the oneplus community forum.
Have somebody already experienced such problem? Or do you know what this problem could be related to?
Thank you for your attention, and my apologies for the long post. :angel:
I have the exact same problem. OnePlus 3T as well.
Am on Android 8.0 OxygenOS 5.0.8.
I have the same exact problem. Always root my OP3T and install TWRP and install latest Magisk (my routine procedures).
Running stock OOS 5.0.8 (Oreo 8.0) and also recently bought Audio Technica M50xBT.
Same problem:
- if "Phone audio" is enabled then Bluetooth gets stuck in ON/OFF loop.
- if "Phone audio" is disabled then Bluetooth works fine (cant use the extra calling related features ) ....
I hope the Androi Pi update coming out (they already have BETA but im not trying it) solves these issues.
Because this Oxygen version fixed my "CAR BT issues" in my B7 VW Passat (2012) - just to find out for new headphones something else is not covered in the "logic in the code" dammit.
@liuk5 I did not notice the batter part you mentioned "It happens systematically as soon as the headphones battery drops below 75% approximately. No issues when the headphones are fully charged. "
I will charge mine to 100% and check it out (but obviously thats not sustainable, plus constantly topping off the ATH-M50xBT battery would decrease the battery lifespan)

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