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Phone keeps forgetting Bluetooth pairs.

My Nexus 6 keeps forgetting my Bluetooth pairs. I'll wake up and notice that my pairs are gone. Which is an annoyance with my car and Android Wear watch. It happened once before but then when it happened last night I know there is an issue. It started after I upgraded to Marshmallow. I'm running the MRA58R build. Any ideas?

I have the same issue...ever since marshmallow...both 6.0.0 official and 6.0.1 official, both times before installs the phone was wiped...but never the less it always forgets my bluetooth pairs
it seems to correlate to when the phone fully dies. If the phone fully dies 1-2 out of 5 times it will boot back up without the bluetooth pairings.
Also if I don't pair my Wear watch(original 360) this does not seem to happen either

I'm having this issue as well. My phone will randomly ask to pair with my car, even though it's been paired already. And sometimes it will just ask me to allow it to share Messaging, which was also already set. It's frustrating. I've only noticed it with Marshmallow.
For me it doesn't seem to correlate with charge level.

Having the same problem here and now that you mention it, it does seem to happen when it fully dies. Until someone comes up with a solution I'm going to see about backing them up and restore if it happens again.

Allowing your phone to completely die is a bad idea. The sudden shut down is what is corrupting it.
Also restoring that type of system data is just asking for other random issues, also not a great idea.
While I run an AOSP based rom I have never had my device forget any of my 5 BT pairings.

I agree don't let phone die.
Also if low battery plays a role (before phone dies), it could be related to battery saver features that can activate at low batteries level. (Adjustable in settings)
For the android wear app, turn off battery optimization (to prevent it from being interrupted by doze. )
I have had zero disconnection between my n6 and my moto 360 g1 android wear watch in the last month.

I have the same problem with my car pairing. I never let the battery for or get into battery saver mode so it's definitely not battery related for me.

Blown 89 said:
I have the same problem with my car pairing. I never let the battery for or get into battery saver mode so it's definitely not battery related for me.
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My phone has done this now twice in three days on N Preview 3. Has anyone found a solution?

mine does it too. but it will forget ALL my paired devices. it's pretty annoying

This is happening to me as well. Nexus 6 is forgetting all paired bluetooth devices.
Most annoying is the Android Wear issue because I've been having to factory reset the watch to get it to pair again. Some of this might be the watch because I'm running a Samsung Gear 2 with Android Wear but I also have several other devices that I have to repair every time.
Also seems to correlate with the battery dying.

There has to be a common bug. As all my devices have no issue remembering the pairing. Mind you I also dont pair to my car.
Also keep in mind that it was found long ago that OEM put in lists of cars that it will not work with in their roms. We found it on samsung devices years ago where it would block all connections to BMW, Audi and a few others.

N6 running 6.0.1 (no root)
This just started happening to me yesterday but has happened twice so far in two days. My phone has not died as seems to be a symptom for others here. It did get below 10% today but I charged it up without issue. it wasn't until several hours later that it wiped all of its paired devices. below is a list of my paired devices:
Samsung ATIV book 8 (windows 10)
UE Mobile BoomBox
Moto360 2nd Gen
2014 Infiniti Q50
2015 Nissan Murano
After it wiped everything yesterday I re-paired the following:
Samsung ATIV book 8
Infiniti Q50
Moto 360
After the first wipe today I paired the watch and the car.
If anyone has any ideas I would be grateful. This is a GIANT PIA!

Does not look like there is a solution to this forthcoming... is there anyone with this problem that's recently updated to N? And has it gone away? I get this usually after a forced reboot... all bt settings gone. Totally a problem.

Any update on this. I think it started happening after I updated to 7 and then went back to 6 after having battery issues?
rkshack

Giant PIA
Blown 89 said:
I have the same problem with my car pairing. I never let the battery for or get into battery saver mode so it's definitely not battery related for me.
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I have this same problem too. Running Android 6.0.1 on a Samsung Galaxy A5. I drive a lot for work, and need my phone paired to a JVC headunit (listed as JVC UNIT on my phone) in my van so I can take phone calls handsfree, and listen to podcasts. Every now and again, maybe once a day, with no rhyme or reason that I can discern, I get into the van and notice that my phone is not paired. It's a pain to have to pull over and re-pair the phone, and then set it up a a trusted bluetooth device again (so as to avoid entering my passcode whenever unlocking the screen).
- Definitely nothing to do with battery levels. My phone is normally fully charged and plugged in to a charger.
- I don't lose all paired devices, as my UE Boom 2 (not often used) is still listed as a paired device, whereas the JVC UNIT drops off fairly often.
Please could someone sort this issue out! It sounds like quite a few people are experiencing it.
thanks,
Phil

Phil in NZ said:
I have this same problem too. Running Android 6.0.1 on a Samsung Galaxy A5.
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Not likely to get sorted for your phone in this N6 thread. [emoji6]

I am on Android 11 and it still happens to me, my car pairing is being forgotten from time to time. Happens to any of you?

Android Auto Issues

Anyone else with this phone using Android Auto? I've been having issues with my Kenwood DDX9207S head unit where it sometimes doesn't initialize AA properly, is more often than not very laggy, etc. Sometimes it runs smoothly, as I would expect for a phone of this class with these specs, but it's getting pretty frustrating. I've tried clearing Android Auto's data/cache and uninstalling and reinstalling it, but nothing seems to help. I'm not sure if it's an AA issue, phone issue, or possibly the head unit (very doubtful, but the screen sometimes stays stuck on AA after disconnecting the phone). I can sometimes resolve the issue simply by unplugging and replugging the phone in, sometimes I have to kill all app processes, and sometimes I have to flat out reboot the phone.
EDIT:
Did some testing last night and this morning during my commute (I sit in a lot of traffic, don't worry) and found a possible culprit: Settings. I looked at the memory usage for apps, and without fail, everything was using very little memory except Settings, which was eating 100-300mbs. Killing the process instantly made AA responsive again, but within 5-10 minutes, I was seeing lag again, and Settings was building up memory usage. I'm going to perform a factory reset on the phone today to see if that alleviates the issue.
EDIT II:
After factory resetting the phone, I'm not seeing issues, SO FAR, with AA. The settings thing wasn't the right target. I still get high RAM numbers with it regardless, and I see the same thing on my Tab S2, so that's obviously not what was causing the issue. The difference *might* be that I disabled a lot of AT&T bloatware before, and in doing so might have messed something up. I'm leaving everything enabled right now, so we'll see how this goes. I only have one car ride under my belt so far, so it's not a very scientific comparison.
EDIT III:
Ran into the exact same issues earlier this afternoon. Plugged the phone in, got the "Accept" screen on my head unit, and then blank. I looked at my phone and realized that AA didn't actually launch, so I unplugged it and plugged it back in. It launched that time, but the lag was there. I can take up to 10 seconds for AA to register a touch, and Maps freezes up constantly for 10 seconds or so before trying to catch up (it usually doesn't catch all the way up before it freezes again). This makes AA more or less unusable for me. I can't find anyone else out there that has had these issues with AA and this phone, so I'm unsure of what the issue actually is. The only difference between last night and today is that last night I was listening to podcasts through Pocket Casts, and today I used Audible. I'll do a bit more testing with/without Audible to see if that's the culprit; I know AA support is relatively new on Audible (though it was in the beta for a while). Again, I haven't seen anyone complain of poor AA performance while using Audible, so I don't know if that's the issue. I wish I had a Nexus to test this against to see if its the phone...

Having the same issue it does not connect all the time

Note 9 started calling self upon Bluetooth pairing?

So here's a wierd one. Have a SM-N960U1 on Android 9. Everything's been fine but as of last Friday every time it pairs with a Bluetooth device (headphones, car, etc.) it starts calling itself? I re-paired all devices, turned BT off and back on, restarted phone, etc., but this behavior persists. Music is also terrible during this time, but realized by accident when I press Device Care widget to optimize phone the BT device announces 'Call Ending', and music again sounds great. However there's no record of any outgoing call in Phone App. I didn't realize what # was being called until I got in my car and saw it was dialing itself, but again, this phantom call does not show up in Recent Calls history? Any ideas?

Ugh... Same
Same man. Just letting you know you're not alone and following for a resolution.

smart lock on?

Removed all trusted devices from smart lock and it still happened.

Did a support Chat with Samsung, they recommended a soft reset (Vol dn + Power, similar to a Battery pull) which solved it temporarily when I turned on Bluetooth but since then the bug continues. No new updates or setup changes I'm aware of before this started happening. They also suggested running in safe mode and disabling Apps one at a time to see if the issue can be isolated (aren't these supposed to 'be' smartphones? Evidently there's no log of what it's doing) Will try that or another Chat session when I get some time again.

Ive been having this issue for a week or so as well. Every time I get in my car, I have to end the call. Its got to be a software update that caused the issue.

I'm thinking now it could be related to Bixby. I don't use it (remapped to google assistant & flashlight on long press using bxActions) but I recall I allowed it to update recently in case it gets better in the future.

Same issue here ... Sprint Note 9 on Pie ... Bluetooth headphones even has issues. I have to make a phone call and end it to be able to control volume from the headset (changing it from in-call audio to media audio).

Yup, those are the symptoms. Bluetooth headphones sound terrible and has no device control until the 'phantom' call that starts on it's own is manually ended.

I had this same problem and finally narrowed it down to a single app. In my case, it was the RC Phone (Ring Central) app. Upon contacting the vendor, they confirmed it was a known issue with a recent update.
With it uninstalled I have no issues.
Good luck

ogretech said:
I had this same problem and finally narrowed it down to a single app. In my case, it was the RC Phone (Ring Central) app. Upon contacting the vendor, they confirmed it was a known issue with a recent update.
With it uninstalled I have no issues.
Good luck
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Awesome tip!
I use Ring Central App for keeping up with work phone messages. A few days ago started the phone in safe mode and had no BT issue, then back in 'un-safe' mode at first it didn't happen but cycling the headphones on and off it did occur again so I was faced with narrowing it down to which App. After reading your post I went into RC Phone settings, Mobile App Settings, Default Launching, and turned off 'Call From Android Dialer' since I don't use that feature and so far no issue!
Thanks for the tip, hopefully this setting change continues to solve this.

Still good after a couple days and weekly auto phone restart (Sat @ 3:00 AM). So nice not to have to end a phantom call that interrupts the stereo after 10 seconds every time I start the car.
Thanks again for the RC Phone tip.

You guys are definitely not alone. I unfortunately do not use the ring central app so I am not sure what is causing it for me...

I'm on the note 10 and have only had this problem pop up recently out of nowhere... I have no idea what could be my problem as I do not have RC Phone installed on my phone

Possible Solution
Hey, I posted a few days ago about having this same problem and not being a user of ring central. I got to thinking and tested this out. The Voxer app was the issue for me. I uninstalled this app and I haven't had any problems since. I am not sure about why the most recent Voxer update caused my phone to start doing this but I hope this helps someone else.

Possible Solution
Some may have tried this. Let me know.
My wife has Honda Hands Free 2016. In the past 30 days it started this same freaky behavior as all of you list.
She has a Samsung s9+.
She also has had Voxer installed on her phone and has had for many years. I will have to check to see if a recent update hit.
But, this is what seems to work for me at this point........
Told Honda Hands Free to completely forget her s9+. Then disabled blue tooth on the s9+.
Turn Entire Honda car off.
Turn Honda back on, told it to connect to my Samsung phone SM-J320A. Verified Honda was connecting properly to my SM-320A with no issues. All good with no freaky behavior. As info Voxer is not installed on my SM-320A.
Turned bluetooth back on s9+ then added the Samsung s9+ back to Honda Hands Free and told it to completely forget my SM-320A.
So far this has stopped the freaky behavior. If it comes back I will update here and then I will try uninstalling Voxer.

Galaxy Note20 Ultra 5G and Uconnect

I'm not sure if this has to do with recent updates to Android Auto or if it's specific to the make and model of my device (I got the new phone around the same time as the latest AA updates were released), but I'm now experiencing endless frustrations with constant connection failures between my phone and my Jeep's Uconnect 8.4 head unit again. I went through a similar thing, as did many others, around this time last year and the year before. It's infuriating.
Most of the time, when I plug my phone into the vehicle's USB port, the Android auto icon appears on the display of the head unit for a moment or two and then disappears. There's a notification in the shade on my phone that says something like "Connecting to Android Auto" or "Starting Android Auto." But then it never really starts.
Occasionally I try clearing the data, storage and cache from the Android Auto app and sometimes Google Play Services. Sometimes I'll also have to go into the Uconnect settings menu and tell my head unit to "Forget device." Every so often, as long as I then turn off the ignition and then restart the vehicle and then reboot my phone, this will bring me back to the Android auto setup screen and I'll be able to use Android auto for a single drive cycle. as soon as I cut the engine and unplug my phone, it's over. When I get back into the vehicle I'm back where I started: with the head unit seemingly able to recognize that an Android Auto device is connected for a moment and then Android Auto just quits out.
It's insane. Seems like Google can't just get this right. As soon as they release a build that works, they follow up with an update that completely breaks functionality.
Anyone else have a similar experience and, hopefully, have suggestions and how to resolve this nonsense?

Used my iPhone with my 2018 Challenger for a year and it worked perfectly. Switched to a Note 20 Ultra last month and it worked for about 2 weeks. Same issue you're experiencing. I'm going back to iPhone.

Possible fix for constant AA crash

I recently started getting a lot of AA disconnects from my Samsung phone and my AA stereos - I have an Android Chinese unit as well as a Kenwood Excelon in my second car. Thought the cable might be the issue but that didn't seem like it.
I went in to the apps menu and found that under system apps, there are 2 more AA related apps. Proceeded to turn off battery optimizations for all 3 and now it seems to be running stable.
The apps are:
Android Auto (DUH!)
android.auto_generated_rro_product__
android.auto_generated_rro_vendor__

You're the f'ing man! I could kiss you.

Didn't work for me.. only fix I have found is tap the usb options [while plugged in] on phone and tell the phone that the plugged in device manages connection.. unfortunately this setting does not remain set after use.