Massive Battery drain and crazy wakelocks on H850 aka the insomniac phone - LG G5 Questions & Answers

Hey everybody
So I've been losing 30%+ a night (6-7 hours) since I got my G5 (H850) a few weeks ago and it's really getting to me.
On stock Nougat my phone would just about get through the work day (barely being used, bit of twitter and some whatsapp) and after trawling the internet for answers found a lot of people complaining that LG's Nougat update had slaughtered their battery life. So I decided to root and install a custom ROM (RR 5.8.3) instead to see if that would fix the problem. I've been installing custom ROMs, rooting and fixing android issues etc since my first Galaxy S1 so was pretty confident I could fix whatever problem I found from the knowledge on these forums and elsewhere on the internet.
Turns out I was very, very wrong.
I've found out my phone is a total insomniac. It will NOT SLEEP. EVER. Light doze, sure. But not a good old fashioned kip. Literally always wide awake. Have a look at the wakelock detector screengrab - I've never seen anything like it on any phone. 94% awake with seemingly every app just doing as it pleases.
"Anx_wlock" seems to be the main culprit, but I can't find any info on it. I've tried changing kernel, done 2 or 3 factory resets with no success at improving it. Tried turning off location, turning off wifi. Nothing makes any difference. PowerManagerService.Wakelocks comes in a close second, and I've turned off NFC in RR's inbuilt wakelock blocker as I'd read that could be an issue in 7.x.
I have scoured the forums for any solution but now I either have to consult the collective hive mind or just accept ****ty battery life forever.
Luckily I have 2 batteries - but this drain just seems crazy and I would dearly love to fix it! Can any of you wonderful people help a brother out and help my phone get some much needed rest?
Any help or suggestions very much appreciated
Cheers
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Can you go back to stock marshallow (maybe using lg flash tool?) or is antirollback preventing this? If xposed is out for nougat, you can try force doze, which should help with standby. Maybe flashing a custom kernel might help?

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Gen5 said:
Can you go back to stock marshallow (maybe using lg flash tool?) or is antirollback preventing this? If xposed is out for nougat, you can try force doze, which should help with standby. Maybe flashing a custom kernel might help?
Click to expand...
Click to collapse
Thanks for the response! I've yet to try going back to Marshmallow (my H850 came with Nougat pre-installed) but will give that a go next. No xposed for Nougat yet, sadly, so no Amplify either to force doze. Although the phone seems to doze okay, it just doesn't sleep.
I installed Fulmics last night (having already tried SpeedyKernel on RR) and I still have exactly the same issue. 0 seconds deep sleep and my battery died overnight. 100% to off in under 8 hours while I slept. So the problem has now been consistent across 3 kernels.
Whatever this bastard "anx_wlock" is, it seems to carry across different kernel/rom flashes as it's there again in better battery stats at 100% wakelock. Any ideas how I can track down what this is? Doesn't seem to be related to any process and no info about it on the web.
As always any help appreciated!

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Burkules said:
Thanks for the response! I've yet to try going back to Marshmallow (my H850 came with Nougat pre-installed) but will give that a go next. No xposed for Nougat yet, sadly, so no Amplify either to force doze. Although the phone seems to doze okay, it just doesn't sleep.
I installed Fulmics last night (having already tried SpeedyKernel on RR) and I still have exactly the same issue. 0 seconds deep sleep and my battery died overnight. 100% to off in under 8 hours while I slept. So the problem has now been consistent across 3 kernels.
Whatever this bastard "anx_wlock" is, it seems to carry across different kernel/rom flashes as it's there again in better battery stats at 100% wakelock. Any ideas how I can track down what this is? Doesn't seem to be related to any process and no info about it on the web.
As always any help appreciated!
Click to expand...
Click to collapse
Sorry, im not sure how to track it. Im assuming that when you flashed the custom rom, you cleared the data, system, and caches?

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Same thing on my lg g5 ls992 unlocked. 80% battery drain in 10 hours while I was asleep. Got this phone a few days ago, this really disappoints me. According to betterbatterystats anx_wlock is draining it. Hoping for a solution...

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i am also getting too low battery life in stock 7.0

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Try this, it will solve your problem.
1) Remove your Google account
2) Wipe Play Services, Google, and Play Store data
3) If rooted, find an app which can clear cache and dalvik or use TWRP, if not then send ADB commands
4) Reboot
5) Add your Google account back again

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tavocabe said:
Try this, it will solve your problem.
1) Remove your Google account
2) Wipe Play Services, Google, and Play Store data
3) If rooted, find an app which can clear cache and dalvik or use TWRP, if not then send ADB commands
4) Reboot
5) Add your Google account back again
Click to expand...
Click to collapse
Tried that, didn't help. Same anx_wlock drain

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https://forum.xda-developers.com/v20/themes/mod-wakeblock-v20-t3647921
There is this thing now, but will it work with lg g5

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Gen5 said:
Sorry, im not sure how to track it. Im assuming that when you flashed the custom rom, you cleared the data, system, and caches?
Click to expand...
Click to collapse
Hi, yes - wiped everything as normal with every flash. Haven't had time to try and fix this with a rollback to stock MM yet. Looking increasingly like the last viable option, unless this wakelock blocker gets ported to the G5...

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Did u freshly install your apps from the Playstore or did you restore them from a Backup? How does it behave with only the stock apps installed?
Ofc it doesnt make it easier being on a custom rom and kernel.

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vollmilch said:
Did u freshly install your apps from the Playstore or did you restore them from a Backup? How does it behave with only the stock apps installed?
Ofc it doesnt make it easier being on a custom rom and kernel.
Click to expand...
Click to collapse
Hey there, cheers for getting involved!
From the moment I got it the batteries (I have 2) were both draining far faster than I expected. That was stock only for at least the first few hours (I had to drive home before I could set it up but had it switched on in the car), and I think it lost about 4-5% in the hour it took me to get back across London.
I got this phone to replace a Nexus 5x that took a swim. The battery life on that phone was nothing to write home about, but from reviews I'd read I expected far better from the G5. It's actually proving to be significantly worse. I should add that I never have 100s of apps installed. Bluemail, Whatsapp, Dark Sky, Amazon, eBay, Twitter, Player FM, Keep, Citymapper and Waze is pretty much it (and subsequently all the wakelock detectors and battery stats, but that's only been since I've noticed the problem). And none of these seem to be the reason for the wakelock.
When I first got the phone I couldn't restore from Google backup for some reason (didn't come up as an option) - so I installed everything fresh. Battery was bad then.
Full factory reset to unlock bootloader and install twrp, allowed backup to replace apps. Same problem.
Wiped System, Data, Caches & Installed RR - fresh installed apps (as I'd read this could be a problem). Same problem. Had a look in their onboard system wakelock blocker but couldn't find anything reference "anx_wlock".
Wiped System, Data, Caches & Installed Fulmics - fresh installed apps again. Same problem.
I'm absolutely stumped. I've also been tweeting at LG UK with better battery stats about this "anx_wlock" problem to see if it's a known issue to them. So far getting resoundingly ignored.
P.S. Yes Vulfpeck.

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Burkules said:
Bluemail, Whatsapp, Dark Sky, Amazon, eBay, Twitter, Player FM, Keep, Citymapper and Waze is pretty much it
Click to expand...
Click to collapse
From your post I cant tell if you tried it 100% stock. I dont know citymapper but waze should be continuously scanning for location. If i was you, i would factory reset without installing any apps and see if the problem still persists (or maybe at least uninstalling waze and citymapper).
the bad battery after your first start after unboxing it doesnt count as the phone is building up caches and doing other stuff
cheers,
eric

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Burkules said:
Hey there, cheers for getting involved!
From the moment I got it the batteries (I have 2) were both draining far faster than I expected. That was stock only for at least the first few hours (I had to drive home before I could set it up but had it switched on in the car), and I think it lost about 4-5% in the hour it took me to get back across London.
I got this phone to replace a Nexus 5x that took a swim. The battery life on that phone was nothing to write home about, but from reviews I'd read I expected far better from the G5. It's actually proving to be significantly worse. I should add that I never have 100s of apps installed. Bluemail, Whatsapp, Dark Sky, Amazon, eBay, Twitter, Player FM, Keep, Citymapper and Waze is pretty much it (and subsequently all the wakelock detectors and battery stats, but that's only been since I've noticed the problem). And none of these seem to be the reason for the wakelock.
When I first got the phone I couldn't restore from Google backup for some reason (didn't come up as an option) - so I installed everything fresh. Battery was bad then.
Full factory reset to unlock bootloader and install twrp, allowed backup to replace apps. Same problem.
Wiped System, Data, Caches & Installed RR - fresh installed apps (as I'd read this could be a problem). Same problem. Had a look in their onboard system wakelock blocker but couldn't find anything reference "anx_wlock".
Wiped System, Data, Caches & Installed Fulmics - fresh installed apps again. Same problem.
I'm absolutely stumped. I've also been tweeting at LG UK with better battery stats about this "anx_wlock" problem to see if it's a known issue to them. So far getting resoundingly ignored.
P.S. Yes Vulfpeck.
Click to expand...
Click to collapse
Hmm, I really wouldn't try LG UK; I had a half hour debate with their customer service manager on why monthly security updates should be regular but they insisted nothing will come out... next month the update comes through.
I still think you should try just running barebones for a day; maybe allow for WhatsApp but do not install anything else. I have an issue with the G5 too with standby times but to a lesser extent (I have had 30% drops over 11hrs when the phone was on flight mode...).
Also, I'm assuming that they will known that you've unlocked your bootloader so you can't get your phone exchanged via LG?
Sent from my Pixel C using Tapatalk

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I live in Ukraine, I took the phone to the repair service. They told me that the phone is not properly activated (using HiddenMenuCall) and because of that it is constantly trying to connect to Sprint servers to activate the device. Without unlocked bootloader it is impossible to do anything. That's their version. Maybe they are right about my device

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lol, i have 2% battery drian when i sleep 8hours
i use greenify, recently (only running apps set), airfrozen, gltools, l speed, servicely
i can send someone titanium made backups of this free apps with data for Resurrection Remix 5.8.3 with OMS 07.18.2017 pm me if someone want

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How I solved my battery issues
I had massive and unusual battery drain issues like described in this thread. After much reading and detective work, I’ll describe my situation and what worked for me.
Bought unlocked LG G5 RS988 to replace my LG G4
The phone arrived with Android 6 installed. Immediately upgraded to the latest Android 7 security patch
Transferred my apps and settings over from my LG G4 to the G5 using LG Backup to wirelessly transfer between the 2 phones
After G5 was set up the battery life (in Doze while not using the phone) was great. It might drop 2 – 3% overnight on Wi-Fi
After a few days the battery would drop between 5-12% per hour while in doze. There were no rogue apps running in the background. The main culprit was Android OS and Phone Idle…
Rooted the phone and tried every battery saving setting I could find and used Greenify and CPU throttling as well. This resulted in no improvement.
I had a second RS988 I could test (long story). Followed the same steps as listed in 1-4 but again after a day or so the battery life would crap out.
Took the rooted phone and downgraded to Android 6. Reinstalled each app from the Google Play Store (did not use the LG backup as in #3 above). Made recommended battery settings changes in the Android OS and installed Greenify. Did not make any other changes (e.g. CPU throttling)
Now after 2 weeks overnight my battery drops between 1 – 3 % per night. This is the performance I expected.
In a nutshell – not using a LG backup file and installing everything fresh solved my battery issues.
I’m going to wait another week and then reinstall Android 7 to see if that makes a difference. I will update this post with my results.
Update
After a few weeks on Marshmallow software version RS98811d and getting good / expected battery life, I decided to upgrade to RS98821d (Android 7 with latest security update). The battery drain I originally described returned even after a complete wipe and reinstall of all my apps. Kept the configuration for about a week hoping for an improvement in battery life but there was none.
Went back to RS98811d and have no plans on upgrading to |Android 7 again with this phone. The smart lock suggestion in the post immediately below did nothing for me.

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Burkules said:
Hey everybody
So I've been losing 30%+ a night (6-7 hours) since I got my G5 (H850) a few weeks ago and it's really getting to me.
On stock Nougat my phone would just about get through the work day (barely being used, bit of twitter and some whatsapp) and after trawling the internet for answers found a lot of people complaining that LG's Nougat update had slaughtered their battery life. So I decided to root and install a custom ROM (RR 5.8.3) instead to see if that would fix the problem. I've been installing custom ROMs, rooting and fixing android issues etc since my first Galaxy S1 so was pretty confident I could fix whatever problem I found from the knowledge on these forums and elsewhere on the internet.
Turns out I was very, very wrong.
I've found out my phone is a total insomniac. It will NOT SLEEP. EVER. Light doze, sure. But not a good old fashioned kip. Literally always wide awake. Have a look at the wakelock detector screengrab - I've never seen anything like it on any phone. 94% awake with seemingly every app just doing as it pleases.
"Anx_wlock" seems to be the main culprit, but I can't find any info on it. I've tried changing kernel, done 2 or 3 factory resets with no success at improving it. Tried turning off location, turning off wifi. Nothing makes any difference. PowerManagerService.Wakelocks comes in a close second, and I've turned off NFC in RR's inbuilt wakelock blocker as I'd read that could be an issue in 7.x.
I have scoured the forums for any solution but now I either have to consult the collective hive mind or just accept ****ty battery life forever.
Luckily I have 2 batteries - but this drain just seems crazy and I would dearly love to fix it! Can any of you wonderful people help a brother out and help my phone get some much needed rest?
Any help or suggestions very much appreciated
Cheers
Click to expand...
Click to collapse
I'm having the exact same symptoms on the same device. Sadly no information is available online for this kernel wakelock. Will report back if I find any solution

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I had / have this issue myself so i had to go back to my oneplus one again ubtil i fixed the drain.
My g5 just refused to go into deep sleep and didnt make a whole day even without touching the phone. Also tried stock rom no apps installed.
What i found out:
After removing my simcard the g5 is deep-sleeping again like it should. It wouldnt do that even when i went into airplane mode.
Maybe my simcard is defective... I'll try it with my wifes sim later and we'll see what happens
Gesendet von meinem LG-H850 mit Tapatalk

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Thanks for all the posts everyone. Still no joy on solutions though!
Nchantment - I tried getting a new sim to no avail. Still the same crazy drain.
Just seen that xposed is now available for nougat - has anyone tried nixing anx_wlan with that? (I've never used xposed before but I gather you can get right inside your kernel/os in this way...)
Refuse to believe this is a hardware issue!
Adam