Paired Bluetooth Devices Keep Unpairing - X Style (Pure) Q&A, Help & Troubleshooting

I keep having to reconnect my previously paired bluetooth devices, and I believe this started after upgrading to Marshmallow. Initially, my devices seemed to unpair infrequently, like maybe every 10-14 days. But now, for whatever reason, it is happening more frequently and sometimes daily.
After reading through the forums here and at AC, I thought it might be happening because I rename the devices after I pair them, but that didn't solve the problem when I stopped that.
After Marshmallow, Android Pay required a screen lock to use, which I never had done in the past, so I also enabled Smart Lock and set my paired bluetooth devices as trusted devices. I just disabled all of that (screen lock, android pay and smart lock) so I maybe that will solve the problem, but I suspect it won't.
Anybody have any ideas?

Hi,
I have the exact same issue!
VEry annoying!
Clearing, hard reseting, repairing etc... tried EVERYTHING!
Now i also set smart lock and trusted devices.. Will go to a meeting and back, will test it on the way.

magdan83 said:
Hi,
I have the exact same issue!
VEry annoying!
Clearing, hard reseting, repairing etc... tried EVERYTHING!
Now i also set smart lock and trusted devices.. Will go to a meeting and back, will test it on the way.
Click to expand...
Click to collapse
Well, that didn't work for me. I also tried clearing the cache from the boot menu, but it's still dropping my paired BT devices.
My new Square Up Contactless + Chip credit card reader arrived yesterday. Unlike their previous credit card readers that connect through the earphone jack, this one connects through BT. I cannot get it to connect to my XPE, but am able to connect it to my Moto X 2nd Gen.
I really hope this is a Marshmallow issue that will be fixed soon, but the lack of responses has me concerned that it won't.

I tried resetting the network settings and wiping the cache, neither of which fixed it. I decided it was time to do a full factory reset, but that didn't fix it either. Any other ideas?

I going to assume you are unrooted... But either way if you can change your SELinux to permissive that might help your Bluetooth issue there is this app here that might help out
https://www.dropbox.com/s/xdllg9xxodnib77/com.mrbimc.selinux_42.apk?dl=0
Sent from my XT1575 using Tapatalk

Got the new phone from Motorola a couple of days ago. After reinstalling all my apps and customizations, including renaming my device and the 4 Bluetooth device I connect to, I started to experience the same problem. Not initially, but soon after I turned on the new System UI Tweak option.
So, I turned off the feature and it hasn't happened since. It has been a few days and I have restart (soft reset) several times, which I found would usually trigger the loss of pairing, so I'm keeping my fingers crossed that it was related to the UI tweaker.

Related

Bluetooth stopped working

At some point yesterday, my bluetooth decided it was no longer going to pair or connect with devices. If I select a paired device that is on, I get a "Connected" messages and then a second later "Disconnected". After this happens the device no longer shows up as paired.
If I go in an try to pair a device it goes through the loop above. I have rebooted the phone several times which does not correct the problem. Everything else on the phone is working. Also, the battery drains fast and a major contributor is bluetooth.
Any ideas? May be time for a new phone :crying:
Maybe a wipe can fix it. Try with another device first.
Enviado desde mi XT1650 mediante Tapatalk
Yeah, thinking about doing this as a last resort. Thinking maybe the driver got corrupt or something else software related.
Maybe is the regist data, if the driver is corrupt you need to flash the ROM again. But only the modem file.
Enviado desde mi XT1650 mediante Tapatalk
Have you tried a Network Settings Reset? It corrects about 90% of all connectivity issues in this device...
Where is the network settings reset?
Found it. Did the network reset, but still the same problem.
I still have not done a factory wipe, which I will do this weekend. But if it does turn out to be hardware, is the BT module part of the motherboard, or can it be replaced? I am searching replacement parts and watched the tear-down on iFixIt, but there does not seem to be a separate module for bluetooth.
All,
Here is an update, and not sure if this is pointing to a problem with the ROM or hardware but...
I did a factory reset via recovery and bluetooth functionality seemed to behave properly. I then did a recovery from google which put the bluetooth back into the same state as it was before the reset and the reason I created this thread.
Next, I did a network settings reset. After doing this I was able to add a bluetooth device. When I tried to add a second, it got flaky and was acting like bluetooth was turned off. I rebooted the phone and both bluetooth devices were paired and were able to connect. I then added a 3rd device, and it was back to the way it was when I opened the thread.
What I have noticed, is I can do a network reset and I can always add one device reliably. Adding a second device is hit and miss and a 3rd will always render the bluetooth useless.
After the 3rd device is added, even if I turn the bluetooth, it shows it trying to connect to each bluetooth device except for the last one. It is almost like a linked list is corrupt, or a stack is damaged.
My next approach will be to either wait for 7.x to OTA and see if that fixes it. Or I might bite the bullet and root it with a custom ROM.
Any thoughts?
frogbite said:
All,
I then did a recovery from google which put the bluetooth back into the same state as it was before the reset and the reason I created this thread.
Any thoughts?
Click to expand...
Click to collapse
Here is your problem. Not in system.
dzidexx said:
Here is your problem. Not in system.
Click to expand...
Click to collapse
Thanks dzidexx. I think it has more to do with the number of devices, since if I do a factor wipe and start adding devices it gets into the same state.
You understand there is a know issue with Bluetooth in the latest Marshmallow build for this device, right? It's an issue in the kernel driver and BT radio firmware.
acejavelin said:
You understand there is a know issue with Bluetooth in the latest Marshmallow build for this device, right? It's an issue in the kernel driver and BT radio firmware.
Click to expand...
Click to collapse
Thanks for that... I did not know it. But it probably explains why my wife's MXPE seems to continually lose it's BT pairings. Now if we could figure out the random reboots...
(P.S. she's completely stock and unrooted)
radon222 said:
Thanks for that... I did not know it. But it probably explains why my wife's MXPE seems to continually lose it's BT pairings. Now if we could figure out the random reboots...
(P.S. she's completely stock and unrooted)
Click to expand...
Click to collapse
Random reboots are a totally different thing, very unusual on a stock MXPE... it is usually an app issue or bad hardware.
Try booting it into safe mode for a day and see if that helps, if it does, it's an app issue, if not then a factory reset is in order and do not install ANY apps and test. if it still reboots then it's defective hardware.
I might be able to convince her to try safety mode for a day or two. But she's adamant about not doing an FDR.
She's too darn stubborn for her own good sometimes.
Sent from my P027 using Tapatalk

Bluetooth won't turn on after update to Nougat

I had tried many different ways, such as:1. Wipe cache. 2. Clear Bluetooth cache. 3. Reset Network. 4. Factory Reset. None of them work out. And I almost need the Bluetooth all the time for my headphone, smartwatch, speaker.
I am having the same issue with my S7 Edge from AT&T.... It was working just fine my bluetooth watch was synced to it up till all the sudden bluetooth refuses to turn on at all... I'm miffed as to why.. I"ve tried all the cache wiping factory resetting also.. no dice... I am super mad its broken...
Let me know if anything comes of this.
I was thinking maybe it was caused because I installed root access on it, but it was working fine for quite a while after rooting so I doubt thats the case.
Bluetooth Not Working
WowTheDog said:
I am having the same issue with my S7 Edge from AT&T.... It was working just fine my bluetooth watch was synced to it up till all the sudden bluetooth refuses to turn on at all... I'm miffed as to why.. I"ve tried all the cache wiping factory resetting also.. no dice... I am super mad its broken...
Let me know if anything comes of this.
I was thinking maybe it was caused because I installed root access on it, but it was working fine for quite a while after rooting so I doubt thats the case.
Click to expand...
Click to collapse
I bought a used S7 Edge with AT&T that has a bluetooth issue and I believe the OTA update was installed before I ended up with the phone. Can I back up to the previous update to see if that will fix the problem? Bluetooth will not turn on, slider moves, but doesn't lite up, and reverts back to off as soon as I leave that screen. I think that reverting to previous update might restore Bluetooth function.

Bluetooth broken since last software update

After this last weekend, I've noticed that Bluetooth no longer works. Specifically, it is off, and when I tap to turn it on from any menu, it grays out and never turns on. I've tried rebooting several times, turning airplane mode on and off, clearing the cache and data from the Bluetooth app and force stopping it, and even booting into safe mode where it still does the same thing. As of last week Bluetooth was working fine and I used it daily for audio streaming and syncing with my smartwatch.
This issue coincides with a software update a few days ago (G950U1UEU1AQH3). I wonder if it has anything to do with that.
I want to avoid a factory reset if at all possible.
my bluetooth works fine after upgrading to AQH3, probably a bad update, im afraid outside of a factory reset not sure how else you can fix it.
Got a fix - I went to "Reset" in Settings and reset all network information. It reset wifi as well, but right after I did that Bluetooth started working. No idea what happened, but at least I avoided a factory reset...

LG V20 Fingerprint Scanner is total BS...

So all of a sudden my fingerprint scanner stopped working after a recent software update. Now I don't know if it was merely a coincidence or it had something to do with it. I tried a lot of solutions like battery removal for 30 minutes, Resetting the device etc but nothing worked.
I finally performed a hard reset through recovery and it worked fine until I paired my phone with my car's BT. Then I added the car BT as a trusted device and THEN my fingerprint scanner bombed again. And now no matter what I do, it won't come back on and I am simply tired of doing a hard reset.
This is the only thing about this phone that is frustrating me a lot. Any solutions? Thanks!
I don't have a solution, but wow, that sucks! I never had an issue with mine in the 10-11 months I owned the V20.
Sent from my SM-N950U using Tapatalk
HD2FORNICK said:
So all of a sudden my fingerprint scanner stopped working after a recent software update. Now I don't know if it was merely a coincidence or it had something to do with it. I tried a lot of solutions like battery removal for 30 minutes, Resetting the device etc but nothing worked.
I finally performed a hard reset through recovery and it worked fine until I paired my phone with my car's BT. Then I added the car BT as a trusted device and THEN my fingerprint scanner bombed again. And now no matter what I do, it won't come back on and I am simply tired of doing a hard reset.
This is the only thing about this phone that is frustrating me a lot. Any solutions? Thanks!
Click to expand...
Click to collapse
Which variant is it ? model #
Sounds like you need to do a warranty exchange or change the fingerprint part yourself.
It is the Sprint version!
Fingerprint sensor
I'm having the same problem, right after an update. I tried resetting and factory reset. No luck, the setting has disappeared. I bought a new sensor and still no luck. If someone finds a fix please let me know. I think it is definitely a software issue.
dborsche said:
I'm having the same problem, right after an update. I tried resetting and factory reset. No luck, the setting has disappeared. I bought a new sensor and still no luck. If someone finds a fix please let me know. I think it is definitely a software issue.
Click to expand...
Click to collapse
I had this issue and this helped
https://forum.xda-developers.com/v20/how-to/guide-solution-to-fingerprint-sensor-t3745769
HD2FORNICK said:
So all of a sudden my fingerprint scanner stopped working after a recent software update. Now I don't know if it was merely a coincidence or it had something to do with it. I tried a lot of solutions like battery removal for 30 minutes, Resetting the device etc but nothing worked.
I finally performed a hard reset through recovery and it worked fine until I paired my phone with my car's BT. Then I added the car BT as a trusted device and THEN my fingerprint scanner bombed again. And now no matter what I do, it won't come back on and I am simply tired of doing a hard reset.
This is the only thing about this phone that is frustrating me a lot. Any solutions? Thanks!
Click to expand...
Click to collapse
If it's a software issue then try this-
Settings- Apps- Show system apps-fingerprintasm-storage- clear data- Restart
dborsche said:
I'm having the same problem, right after an update. I tried resetting and factory reset. No luck, the setting has disappeared. I bought a new sensor and still no luck. If someone finds a fix please let me know. I think it is definitely a software issue.
Click to expand...
Click to collapse
Having the same issue.
This is what happened to me:
– flashing the Oreo modem ? get fingerprint working but no network signal
– flashing the modem I dumped from Nougat ? network signal OK but no fingerprint
I thought there were ARB for modems...
Still browsing for solutions...

Wi-Fi won't turn on even after factory reset / hard reset pls help!

Hi.
I have a Samsung A5 2015.
My Wi-Fi no longer turns on - even after a factory rest. Mobile internet works fine but no matter what I do I can't get the Wi-Fi to switch on.
One possible cause might have been trying to root my phone with kingoroot - but the rooting failed. It was around this time, however, that the problem surfaced.
ALSO, near the time of the fault starting I was in the process of switching over to a new iphone 6S Plus and downloaded the "Move to iOS" to my Samsung A5, unsure if this is relevant, but this was roughly the time when it happened (the wifi disabling)
Both events above were done closely together, just not sure exactly when the wi-fi stopped.
When I say the wi-fi has stopped, I mean completely to the point it never switches on even for a second.. I tried to reset phone’s network settings, wouldn't let me. deleting system cache, and various other methods . After the factory reset nothing changed!
Looks like end of phone?
Your comments and advice would be appreciated.
temple-Lobe said:
Hi.
I have a Samsung A5 2015.
My Wi-Fi no longer turns on - even after a factory rest. Mobile internet works fine but no matter what I do I can't get the Wi-Fi to switch on.
One possible cause might have been trying to root my phone with kingoroot - but the rooting failed. It was around this time, however, that the problem surfaced.
ALSO, near the time of the fault starting I was in the process of switching over to a new iphone 6S Plus and downloaded the "Move to iOS" to my Samsung A5, unsure if this is relevant, but this was roughly the time when it happened (the wifi disabling)
Both events above were done closely together, just not sure exactly when the wi-fi stopped.
When I say the wi-fi has stopped, I mean completely to the point it never switches on even for a second.. I tried to reset phone’s network settings, wouldn't let me. deleting system cache, and various other methods . After the factory reset nothing changed!
Looks like end of phone?
Your comments and advice would be appreciated.
Click to expand...
Click to collapse
Flash stock rom from Sam Mobile. You'll find tutorials on here.

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