Develop Bugs

[Q] Loss of BT and WiFi every day

I received a brand new Galaxy Note 4 from Sprint a few months ago to replace a problematic LG G2, but didn't activate it until last week (it sat in it's box prior to that and wasn't even turned on). At first, it worked great, but recently it has been losing Bluetooth and 2.4 GHz (I think) WiFi connectivity every day or so (usually when I wake up in the morning), and the only way to get it back is to restart the phone.
Has anyone heard of this? Or have any suggestions on troubleshooting or resolutions?
Thanks very much!
Three things to mention:
1) I did the tap & go to transfer my data from my old LG G2 (running some version of Android 4.x - I can't remember which one specifically) to my Note 4, but that was a week or so ago and the problems only started in the last few days.
2) The Note 4 came with a version of Android 4.x, but I updated it to Android Lollipop - again, this was done a week or so ago and the device seemed to work with no issues after doing it.
3) I am using the Samsung Gear 2 watch with the phone via Bluetooth but it seems all BT connectivity dies when the above issue happens (such as no ability to connect it to my car BT, etc.)
Thanks for any assistance!

Have you changed the visibility timeout to never? Then keep Wi-Fi on during sleep? For the Bluetooth problem, which I had also,I did a factory reset and haven't had as many problems since.

w7excursion said:
Have you changed the visibility timeout to never? Then keep Wi-Fi on during sleep? For the Bluetooth problem, which I had also,I did a factory reset and haven't had as many problems since.
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Click to collapse
Thanks for the info. I haven't ever made any of those setting changes previously, which is what leads me to believe something is wrong. For Bluetooth visibility, it is set to "2 minutes", but wouldn't this just be when a device is initially connecting to my phone, and not when a device is already connected? And for WiFi, it is set to "Always" for "Keep Wi-Fi on during sleep", so this is already set per your suggestion. Basically, things used to work fine, and now every night it seems to lose BT and 2.4 GHz WiFi. Per suggestions on another forum, I did a cache partition wipe, but this doesn't seem to have helped. This morning I woke up, and the device had lost it's connection with my 2.4 GHz WiFi network (wasn't even seeing it), and had connected to my 5 GHz WiFi network, and while it still showed connected to my Samsung Gear 2 watch, I don't think BT was working since I tried to connect it to another BT device and it failed. I then restarted, and it worked fine (until tomorrow morning presumably). I'd prefer not to hard reset, especially since there's no guarantee doing so will fix the issue and it won't just re-occur, and because it'll take me a lot of time to back everything up, hard reset, and then restore data, settings, and customizations to my device.
Any other suggestions or thoughts? Thanks!

I just wanted to say that my connectivity timeout is set to two minutes as well. I use my BT everyday for my headset and my head unit in my big truck and have had no issues.
From my Alliance powered Note4

schlepprock said:
I just wanted to say that my connectivity timeout is set to two minutes as well. I use my BT everyday for my headset and my head unit in my big truck and have had no issues.
From my Alliance powered Note4
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Thanks for the info! This is so frustrating - just started using this device, and already it's broken...lol! Anyone have any other good thoughts or suggestions on what I might be able to do to resolve without a hard reset? Thanks!

Any other thoughts/suggestions? I'm open to Anything at this point!!

I spoke with someone at Sprint Tech Support, and they had me turn off WiFi Power Save Mode using *#0011# (and then choosing WiFi from the three dots menu) to see if this would help resolve the above issues. It didn't, and now even after re-enabling the power save mode, things have gotten worse. Now, every time I leave a location where I'm on WiFi (such as my home), my device's WiFi never refreshes to auto reconnect to other WiFi SSID's elsewhere. So even if I leave my home and arrive at an office where I've previously saved a WiFi connection, the phone stays on 4G/LTE until I manually turn off WiFi and then turn it back on a minute or so later. And I still think the 2.4 GHz issue (above) is happening as well.
WiFi is basically useless on my phone now - anyone have any ideas at all?
Thanks!

WiFi turns off during sleep

I work in an office thats underground, Cell reception is almost non-existent. So I depend on WiFi to keep my phone in touch with the 'net. Otherwise, my battery just drains before lunch time.
Because of this, I have to make sure that my phone DOES NOT turn off wifi while it's asleep. Otherwise, while its sleeping, it will just eat up the battery as my phone tries to report my every action to Google, and check my email.
I had this working perfectly, and then I decided to try out Android N developer preview, used it for a few days, and then factory reset the phone to go back to M. No big deal, I've done this sort of thing a thousand times with my various phones, and this is part of why I bought a Nexus this time around.
After the reset, I cant seem to convince my phone to keep it's wifi on during sleep. The option is set in the advanced wifi settings to keep wifi on during sleep always. Yet every time i turn off the screen and set my phone down, it goes silent, until I pick it up and unlock it. If it sits long enough, when I unlock it, I actually see the wifi icon missing from my status bar, and it comes on after a few second,s and then the notifications come flooding in. It's obviously doing something that disables wifi when the screen is not active.
This is killing my battery, because even though wifi is off, it's still doing its thing, trying to keep in touch with its various sync services. Its attempting to depend on cell service, which most of the time is flat out non-existent at my desk.
So what can I do to fix this? Is it possible something didnt get cleanly wiped when I reinstalled the stock rom after my foray into N? I've tried doing things like wiping dalvik, but that hasnt helped. I've also received the April OTA since then, and nothing regarding th WiFi problem has changed.
Any suggestions?
Thanks!

The only thing I can think to try is removing your known WiFi networks and adding it back.
In the mean time as a work around, you can disable mobile data so when WiFi does drop out it switches over to a voice only signal.

bblzd said:
The only thing I can think to try is removing your known WiFi networks and adding it back.
In the mean time as a work around, you can disable mobile data so when WiFi does drop out it switches over to a voice only signal.
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Click to collapse
Thanks.
I have tried clearing out the saved wifi network for work, and re-joining it. Didnt help. I even went so far as to have the network guys de-authorize my phone, so when i rejoined it would be like it was never there before. Also didnt help.

What were the steps you took to return to stock?

Dropped wi-fi speeds and SLOW playstore downloads..!!

After Switching to Nougat OB 8(00s 4.0) I'm experiencing a SIGNIFICANT drop in wifi speeds. I have a pretty good wifi connection with which I can atleast buffer a 1080p 60fps video on youtube without any problem,But surprisingly My wifi on op3 sucks which I didn't face before on any MM builds and Community builds as well. I tried all the possible fixes available like forgetting and reconnecting. Turning router on and off. None of those helped. Downloading whatsapp took me forever from playstore. Any possible fixes?

Not just slow down, sometimes it disconnected while screen is off. happened few times when I turned the screen on, I saw a message showed something like 'wi-fi network unavailable', then it re-connected immediately and a bunch of email/msg came out, it didn't even switch to 4G when it disconnected. In settings wi-fi is setted as always on.

Try this
@hkkp @sasanksai
Give it a try : http://forum.xda-developers.com/oneplus-3/themes/wifi-ini-low-signal-speed-t3456404
Also let me know...

vijayendraks said:
@hkkp @sasanksai
Give it a try : http://forum.xda-developers.com/oneplus-3/themes/wifi-ini-low-signal-speed-t3456404
Also let me know...
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Click to collapse
Thanks, I will try it.
I am sure the wi-fi part has some issue, last night when I tried to turn it off my phone was freeze, I had to long press power button to reboot the phone. Couldn't reproduce it though, today it work flawlessly.

hkkp said:
Thanks, I will try it.
I am sure the wi-fi part has some issue, last night when I tried to turn it off my phone was freeze, I had to long press power button to reboot the phone. Couldn't reproduce it though, today it work flawlessly.
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Click to collapse
One more thing you can do
Download wifi analyzer from play store and check which is the best channel the app shows.
Then change your wifi channel.....this may work well.

Bluetooth turning off since NMF26U

Has anyone been experiencing their bluetooth turning off on its own since the MNF26U update? I've tried re-flashing the factory image and doing a factory reset, but the problem still exists.

I've had the same persistent issue also as of recently. Only things that use on Bluetooth is my Hauwei Watch and State Farm Drive Safe beacon. I haven't figured out what is causing the issue.

nighcore said:
I've had the same persistent issue also as of recently. Only things that use on Bluetooth is my Hauwei Watch and State Farm Drive Safe beacon. I haven't figured out what is causing the issue.
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I also use a Huawei watch and the drive safe app. I'm gonna install an older version of the state farm app as it recently was updated now that I think of it.
Sent from my Pixel XL using Tapatalk

thecarp1975 said:
Has anyone been experiencing their bluetooth turning off on its own since the MNF26U update? I've tried re-flashing the factory image and doing a factory reset, but the problem still exists.
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Click to collapse
FWIW: I've had no Bluetooth issues. Only things I use it for are connecting to my two cars for phone, and Android Auto (which uses USB and Bluetooth connection).

I am also experience this same issue. Seems when I get in my car I have to toggle my BT back on. I am using a Samsung Gear S3 with my Pixel XL.

millerd79 said:
I am also experience this same issue. Seems when I get in my car I have to toggle my BT back on. I am using a Samsung Gear S3 with my Pixel XL.
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Ever since I got the Gear S3, my Bluetooth will restart every single time I disconnect my Bluetooth headphones. It also never routes calls through my headsets unless I go into Bluetooth settings and uncheck and then recheck the phone audio option of those headphones every time I reconnect them. I've tried maybe 6 different BT headsets and it's the same case with all of them.

I have been having this issue since NMF26U as well. NOF26V actually seems even worse. It doesn't go off immediately upon connection or disconnecting from my car, but then randomly wile the BT lite will disappear while it is disconnected from any devices. Toggling it back on works as does a reboot that comes back on with BT activated even though it was off when rebooting. Hard to believe after this many updates that BT issues continue to be an issue with this phone.

Probably background tasks are getting killed aggressively. Despite being "not battery optimized", my VPN app gets killed too, if I don't touch my phone for too long. E.g. at night. And yes, I'm facing Bluetooth issue too.

Strange, Bluetooth hasn't turned off since my first post. ?
Sent from my Pixel XL using Tapatalk

I've had this issue and I'm not on the latest firmware. It's happened twice now. Very random, a week between. Maybe it was an update with the Google app, I've noticed a bunch of updates recently

I am having the same issue. The only thing I use my bluetooth for is my car. I have to turn it back on everyday when I start my commute.

I think I found a work around....
thecarp1975 said:
Has anyone been experiencing their bluetooth turning off on its own since the MNF26U update? I've tried re-flashing the factory image and doing a factory reset, but the problem still exists.
Click to expand...
Click to collapse
This suddenly started happening to me as well and at first I thought it was my Moto 360 watch going bad since it kept displaying "Bluetooth Services has Stopped". After looking I noticed my Bluetooth was off on my pixel and here is what I did after learning a similar experience from my Camera shutting down on my old Nexus 6.
I went under Settings/Battery/Click the 3 dots in top right corner and select "Battery Optimization"/Then select the little drop down arrow next to "Not Optimized" and select "All Apps"/ Scroll down to "Bluetooth MDI Services" and Bluetooth Share". I selected both of them to "Not be Optimized" but you can play around and select one or the other to see if it works for you. Since I selected both my watch has stayed connected now for about 2 days straight and my Bluetooth stays connected and connects automatically like I've set up to my car and other devices. It also works and stays on when my phone goes into "do not disturb mode" also....
I'm not saying this is the "fix" for it but it seems to be working for me....
I hope this will work for you guys and helps!

Kokopelligod75 said:
This suddenly started happening to me as well and at first I thought it was my Moto 360 watch going bad since it kept displaying "Bluetooth Services has Stopped". After looking I noticed my Bluetooth was off on my pixel and here is what I did after learning a similar experience from my Camera shutting down on my old Nexus 6.
I went under Settings/Battery/Click the 3 dots in top right corner and select "Battery Optimization"/Then select the little drop down arrow next to "Not Optimized" and select "All Apps"/ Scroll down to "Bluetooth MDI Services" and Bluetooth Share". I selected both of them to "Not be Optimized" but you can play around and select one or the other to see if it works for you. Since I selected both my watch has stayed connected now for about 2 days straight and my Bluetooth stays connected and connects automatically like I've set up to my car and other devices. It also works and stays on when my phone goes into "do not disturb mode" also....
I'm not saying this is the "fix" for it but it seems to be working for me....
I hope this will work for you guys and helps!
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Click to collapse
This suddenly started happening to me as well... SIGH... I've tried what you just listed to do, stay tuned I hope it works. Thanks!

t3chfaith said:
This suddenly started happening to me as well... SIGH... I've tried what you just listed to do, stay tuned I hope it works. Thanks!
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Yeah I would be very curious if it works for you as well and hopefully it does. I was getting very frustrated with it but since I changed those settings it seems to be working fine now and I haven't really noticed any difference in battery performance either.... If you don't mind, keep me posted as I'm curious. Thanks!

Had the Bluetooth turn off on my XL before even entering my car (but I didn't see it happen except when I was about to get in the car and noticed no BT indicator). This was approximately an hour after a reboot and no BT devices had been paired though the indicator was on for some period after the reboot. Pretty hard to believe it was an optimization issue since I had run no apps after the reboot. While typing this, the BT icon disappeared again. Add this to getting a Verizon "Server Unreachable" error on my wife's Pixel yesterday and my XL this morning that both needed reboots to remedy. My frustration with this phone is pretty bad today. Both are unlocked BL, rooted with newest SU, running newest TWRP and newest Google version but otherwise stock. P.S. When you see about 4 Google play updates a day for about 2 weeks (with not very many apps installed other than the base) it is hard to guess what my be causing the issue. OK, rant over.

BT has definitely been a PITA since the latest security update. It's completely ruining the music experience on a car I bought days before the update came out. Since the update I constantly have to toggle bluetooth on then off again to get the phone to connect to the car. Then I have to open Google Play Music and start playback manually. This happens several times a day and is very annoying. Had not a single issue before the update.

I am having issues with Bluetooth disconnecting as well. Was bad on previous build but this most recent update, NOF26V build, is worse. I connect to my truck, watch, and speaker system in home and office. Happens randomly without notice. I have tried to test the "do not distrub" theory, after reboot, etc., so far I have not figured out a root cause or time.

Trying the optimized thing for the heck of it. I noticed that only share was listed and not MDI services. I wonder if that is only available on Google phones and not Verizon somehow or only shows if the BT is connected to the device, but I'm not in the car to check.

I too have a gear 3 frontier and since then I have to reconnect my pixels bluetooth, pretty much once everyday. very frustrating lol

Same BT problem
I have been having the same issue with BT switching itself off for about a week now. Never had any BT issues prior to that. Mine is a Verizon Pixel XL. I noticed it when it wouldn't connect to my car, but I quickly discovered that was because BT was off on the phone. I always leave BT on, so I knew something was funky and paid close attention after that. Once I turn it back on it connects to everything just fine and it stays on for the duration of me using it at that time. But when I go to use it the next time, it is off again. It can be a variable length of time in between when I use it, so I don't know how soon it turns off, but it has to be within just a few hours. This pattern suggests to me that something is turning it off, perhaps to save battery, if it goes without being used for a certain time period. I did not knowingly turn on any setting that does that, so it makes sense that an update changed something. I have not tried the workaround/fix mentioned above; I will do it and report back.

Available WiFi networks list repopulates every single time

I'm at my wits end with this problem. Hopefully someone knows what's going on.
The problem: Everytime I open the available wifi networks menu it always shows an empty list, which repopulates after 3-4 seconds. It is fairly annoying to wait for the phone to find all available networks.
Expected behavior: when opening the available wifi list, it should already be populated. At least, that's what happened on all of my previous phones, except for the Pixel 2. Is this a problem with the Pixel line? Can anyone confirm?
I think there's something wrong with my wifi settings. I've tried everything: wifi scan throttling on and off, wifi scanning on and off, turn wifi on automatically on and off, open network discovery on and off... what's going on??
Rooted Pixel 3 on stock Android 10 (December patch), Kirisakura kernel.

redsmith said:
I think there's something wrong with my wifi settings. I've tried everything: wifi scan throttling on and off, wifi scanning on and off, turn wifi on automatically on and off, open network discovery on and off... what's going on??
Rooted Pixel 3 on stock Android 10 (December patch), Kirisakura kernel.
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Click to collapse
I just checked mine and it took a few seconds to scan but after that if I closed it out and went back into it, all the networks were still there that it had scanned previously a few minutes ago. Tested it a few more times after that and a few new ones were mixed in without having to wait for it to scan when I opened the WiFi page. Maybe try a different kernel and see

Mine is behaving exactly as you both describe. For better or worse I think this is the intended behavior.

KUSOsan said:
I just checked mine and it took a few seconds to scan but after that if I closed it out and went back into it, all the networks were still there that it had scanned previously a few minutes ago. Tested it a few more times after that and a few new ones were mixed in without having to wait for it to scan when I opened the WiFi page. Maybe try a different kernel and see
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Click to collapse
Thanks. Since yesterday, I've noticed mine does that as well, but I would say it's only about 20% of the time. As soon as I do other things on the phone, the wifi picker clears itself, as though the list was being kept in memory. Did you try switching to other tasks as well? The annoying thing is that my other devices always keep the list populated. My wife's S10e on Android 10 works well, I have an old OnePlus 3T and it works normally. Even my ancient Nexus 9 works as intended. Is this something exclusive to the Pixel line? Something to do with the RAM issues on the Pixel 3?

redsmith said:
Something to do with the RAM issues on the Pixel 3?
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Only time I've noticed it is when I'm sleeping and the phone is idle for hours or similar scenario. I don't keep my wifi on when I'm not using it so it doesn't scan in the background. The pixel 3 series has been known to have bad memory management which I've read has been fixed with the December security update supposedly. So maybe that's something to look into.