Develop Bugs

Chime in if you recently are getting random reboots/bootloops/"optimizing apps"/etc

Chime in if you recently are getting random reboots/bootloops/"optimizing apps"/etc
Over the past few days my G4 has been infinitely more laggy that before, and then started getting random reboots, bootloops, and occasionally would "optimize apps" at startup multiple times in a row. When it shuts off on its own, 50%+ i have to do a battery pull to get it to start again and then it may bootloop or never even make it past the LG or the AT&T screen.
At this point my phone is unusable and a warranty replacement is on the way. It wont stay on for more than a few minutes tops. I'm getting fearful there is some flaw that is emerging if other people are experiencing the same thing around the same time.
This is on an AT&T 810, rooted on 10e firmware.
If you're also having issues, list your model/firmware as well.
Thanks,

yes!
I literally just had the same type of question haha! http://forum.xda-developers.com/g4/help/optimizing-apps-1-233-rising-t3224808
I have the H815, running on 10b firmware
Its so strange i hope someone can help!

Do you by chance have xposed installed? This started happening on my Note 3 after I updated to L and installed xposed. If not, I don't know the problem but if it's xposed, prolly have to remove it.

I had this happen to the point where the phone wouldn't boot up anymore, it would hang on Android, and then fade to black. I sent this issue to the sprint store and got a brand new LG G4 in 5 days. Just get warranty and say the phone won't turn on, and get a factory fresh LG G4 in a week or so.

pre4speed said:
Do you by chance have xposed installed? This started happening on my Note 3 after I updated to L and installed xposed. If not, I don't know the problem but if it's xposed, prolly have to remove it.
Click to expand...
Click to collapse
No xposed, basically nothing other than root
De_Falt said:
I had this happen to the point where the phone wouldn't boot up anymore, it would hang on Android, and then fade to black. I sent this issue to the sprint store and got a brand new LG G4 in 5 days. Just get warranty and say the phone won't turn on, and get a factory fresh LG G4 in a week or so.
Click to expand...
Click to collapse
Have a warranty on the way, my concern is the warranty phone will be on a later firmware with the anti rollback counter past the point of no bootloader unlock in the future. We shall see. Shame its working out this way.
Sent from my Nexus 7 using Tapatalk

Some ideas
YES. I joined just to post this reply lol. I have an unlocked H815 (Bought from Amazon, included documentation was in Czech, Slovak, and English) and I've been having this issue for weeks now. I couldn't find much on google and thought it was just my device, but now it seems more and more people are having the same problem. It is incredibly frustrating and it hurts.
Symptoms:
- Randomly (6-7 out of 10 times I want to use the phone for whatever) it'll throw itself into a reboot frenzy til it decides to stop doing it whenever, usually after 5-15 reboots or about 5-15 minutes.
- During the reboots, sometimes it'll reboot even before the phone boots up at all (on the LG boot animation).
- And for the times it does boot up, it'll reboot again within up to 20 seconds or so.
- Some reboots are immediate - phone shuts off and turns on again immediately randomly. But for some reboots, the phone freezes briefly before the reboot. On some of these freezes, there's a horizontal screen glitch at different heights every time.
- During the reboots the phone overheats considerably.
- The battery drains very quickly during the reboots. Percentage "skips" occur frequently.
- It also sometimes "optimizes" apps...
- The number of apps it needs to optimize for whatever reason can be different (I pulled the battery out several times when it was "optimizing", and the number would vary; though it did not boot at all until it finished "optimizing" apps, which took forever).
- Not sure if related, but just 3 days ago completely out of the blue overnight (no updates or anything) the camera developed a green blotch on the upper right-ish side too; seems to go away or get stronger depending on lighting. On google I found a Taiwanese H815 having an identical problem too so it can't be a hardware problem; also due to the fact that it almost immediately disappears when a different camera app is launched under the same conditions (such as Snapchat).
Device:
- Unlocked H815 European model.
- Kernel version 3.10.49
- Build number: LMY47D
- Software version: V10d-EUR-XX
- No root. No unlocked BL. All stock except the launcher (Nova). Plenty of storage space.
- Network is T-Mobile and have a 32GB MicroSD inserted.
What I've tried so far:
- Tried using the phone without SIM card. Did not help.
- Tried using the phone without MicroSD inserted. Did not help.
- Factory reset and immediate restore from LG backup. Did not help.
- Factory reset and no restore - only contacts. Seemed to work fine for almost a day, then problem came back. Probably a coincidence it ran okay for a bit.
- Since the phone overheated and the battery drained very quickly during the reboot spells, it stood to reason that the CPU was being stressed considerably. Most likely by some app or process obviously.
- Tried disabling some "stock" apps after a clean factory reset (the stock apps were the only apps on the device). Tried Google Play Services, and most other Google apps. Tried a few LG apps too. None worked.
- Tried updating some "stock" apps after a clean factory reset; same apps as above. None worked.
- From developer menu, enabled "Show CPU usage". The goal was to see what processes are running during the problem to see if it's associated with a memory leak or a CPU stress. No process seemed to stand out. No memory or CPU leaks as far as I could tell.
- Enabled event, kernel, main, memory, power, radio, and system log from hidden menu (277634#*# -> SVC Menu -> Log Service -> Log Enable). After a random reboot, copied log files to sd card from the same menu in hidden menu and tried to analyze them to see if there was a smoking gun. Logs are huge and I merely looked at the end of them, but to no avail so far. Interestingly though it seems the kernel log was cut mid-line on the last entry...
- I also noticed that after a factory reset, if you opt not to restore from a backup, the phone requires an internet connection to be set up. After the phone is ready for use, the Software version is listed as V10d-EUR-XX. The phone did not ship with this version. I believe it was V10a. For whatever reason, even after a clean factory reset, the phone runs the seemingly latest Software version. Not sure if this information is of any use, but it may be relevant.
I love this phone and when I got it, it was working absolutely flawless. Now with the software updates it seems it's just gotten buggier by the day to the point which it's pretty much unusable now, very disappointed. Hopefully this info will be useful to some of you out there.

Same here:
http://forum.xda-developers.com/g4/help/g4-bootloop-t3223130
TLDR;
-Not Rooted/Not BL Unlocked
-Reboots/Bootloops/Optimizing
-Resulting in "not fixable" Bootloop
-Phone in Warranty/Brought it back to retailer
-Don't know which Firmware
-H815 unlocked
-Messaged LG-Customer Service Conversation translated to english in Thread
Really not impressed by LG so far (First Lg Phone i own).

i think i'm gonna chime in....
these kind of things happened on my fellow G4 user here (H818P)
one of them have found and proven that on his V10D H818P, if the phone stays on for longer than 30 minutes, every reboot will start as optimizing apps
and one of them had worse luck: he was laying his G4 on his work desk and when he's about to open a newly arrived text message, the phone suddenly reboots and bootloops until no end.
thankfully one of them got the mainboard replaced, while one of them is still waiting for the warranty to be processed

Same issue is happening with my H815 now - unrooted and no modifications. Constant reboot loops or if it does boot up, it'll shut off randomly and go back to the reboot loop. Unfortunately, I have the Taiwan version and live in the US, so I think warranty coverage is not likely.

wow.. I just got this phone yesterday and i'm getting this bad. of course it was from a 3rd party seller... no fun
more info
tmobile
brand new
occured on 10h
updated to 10n and it's still happening (Update: Only happened once)
is this real life?
Update: I seem to have gotten past the problems after updating to 10n. Now running stock debloated 10n rom with no reboot issues (so far)

R.Suave said:
wow.. I just got this phone yesterday and i'm getting this bad. of course it was from a 3rd party seller... no fun
more info
tmobile
brand new
occured on 10h
updated to 10n and it's still happening (Update: Only happened once)
is this real life?
Update: I seem to have gotten past the problems after updating to 10n. Now running stock debloated 10n rom with no reboot issues (so far)
Click to expand...
Click to collapse
v10n?? Is that even released for the h815? Are you rooted?

yankeetr said:
v10n?? Is that even released for the h815? Are you rooted?
Click to expand...
Click to collapse
v 10n on Tmobile. Sorry I didn't specify. I am rooted but it's also reported happening on un-rooted G4s

#brickgate

Hi everyone, I had some strange behavior with my note 7 last night, it locked up for abou 10-15 seconds and then rebooted itself and got stuck in a bootloop, it looped through the first boot screen for around 10-15 cycles and eventually managed to boot up, I kept having random reboots and bootlooping for the next hour or so, I suspected it could be the stock browser as it seemed to be what I had open when most of the reboots occurred so I disabled it with EZ disabler, I haven't had any trouble since last night and I have re enabled the stock browser a day still don't seem to have any problems yet. I googled it and found that apparently a lot of people with the exynos variant are having similar issues, I read somewhere that it was the July date coded models that had the issue but mine is an August coded model, does anyone know anything about this?
Edit, its possible that downloading or updating apps might have something to do with it.

Mine does this and has been doing it since day 3 of my 10 days of having it.
What I'm gathered, any form of lag that corresponds with the vibration motor causes the reboot - so if you touch the back button one too many times or hitting the menu button; heck, sometimes it even just reboots when I'm scrolling in anything and there's some lag (both Chrome and stock browser as well as Whatsapp/Playstore).
I talked to my Telco and they said they'd replace as it's a clear defect but there's no stock unfortunately for an instant swap. I'm about to switch to the international XSA firmware (Currently on OPS Optus firmware) to see if that does anything since the XSA had a recent update relating to performance issues. If it is a defect it won't do anything and the best bet is to go into store and send it off while they order a new one.
Mine's begun to do it more frequently now. Sucks that this is the experience of a first time Note user :'(

Google Pixel XL repeated freezes no idea what's going on

Getting repeated freezes on my Pixel XL. Had it since November. I've got about 20GB still free on the device, so it shouldn't be a storage issue. It seems to occur most when I open or am switching apps. I put the phone into safe mode for a few hours just to see if I can recreate this without any third party apps. It's PROBABLY an app that was never updated properly for Nougat or something but I am having a hard time trying to get logs etc since the device is stock and unrooted. I did pull a bug report maybe someone here has a clue what to look for. I've had 2 freezes today and 3-4 yesterday.
https://mega.nz/#!S8EGTKyQ!XX0DfWaukkzcnSOOBvYk23KNFeaR1Ok4yUxmwxFN8gU

My phone has also been constantly freezing and restarting for the past two weeks. It started out of the blue, No idea whats causing it, but it is really frustrating.

Are you guys on the may update? I never took the update and after about a week I don't see it anymore when searching for new updates. Don't know if they pulled the update cuz of all the recent problems. I'm not having any freezing issues though, rooted and stock on April.

Mine is also repeatedly freezing and restarting itself.
Strangely, though, it's nothing I'm doing... Because it will sometimes do it whilst sitting beside me on my desk. (I'll be ignoring it, "working", and suddenly I'll hear that little piano that plays when it boots, and glance over to see it halfway through restarting)
I am on the May update, but this started happening about a month ago. It's tricky, because it's intermittent, so I doubt sending it away for repair would yield a result.

Some XL 128gb pixels have faulty nand chips. The issue happens once the nand reaches a certain capacity. Not sure if that's your issue or not. If yours is 128gb id give Google a call for a replacement.

Frequent freezing occurences per day

Nexus 5X 32GB - stock Android 7.1.2
Fact 1: The device presented the usual bootloop issue a couple months ago. I sent it to LG support for repair, where they replaced the entire PCB. For about a week after the repair the device behaved normally, then the freezing issue started.
Fact 2: After some factory resets and experimentation with installing/uninstalling apps I suspected might cause the issue, I unlocked the bootloader, flashed the latest stock Android 7.1.2 image (wiped user data/cache etc.), relocked the bootloader and kept using it normally.
Fact 3: A few days later from the flashing, the freezing issue came back.
Behavior: What happens is that the device randomly freezes when interacting with it (be it texting on a messaging app, scrolling through Chrome, expanding the notification bar etc.). When this happens, most of the times the device will stay frozen for a couple of minutes and then take me back to the lockscreen where I need to enter my PIN again to unlock it. Sometimes it will just reboot. And less frequently, it will give me an error message that "Google App has crashed". All of the times, when the device remains frozen, the back of the phone will get hot (but not extremely hot).
As you understand, I haven't yet managed to find the root cause of this issue, whether software or hardware induced. Nevertheless, the phone is rendered unusable that way and I want to investigate my options.
Any ideas? Your help is much appreciated.

I would see if your are still covered under the warranty and get it replaced with a unit that doesn't have the hardware issue.
Sent from my Nexus 5X using Tapatalk

I'm noticing similar behaviors on mine too. I have the latest Android 6 room installed instead of 7.
It started happening about 2 weeks ago. Was there an update on Google apps or the core platform recently that could be affecting the ROMs?

I have exactly the same problem! Except I haven't flashed anything. Mine has been stock all the time. So I don't think it is because of flashing.
They also replaced my phone's motherboard after bootloop. And now I have this random freezing at least once a day. Also I haven't been rooted or unlocked bootloader.
Mine is still under warranty.
Does anyone have an update?

I also saw this start happening on a stock 5x with no bootloop issues and no replacement hardware, roughly mid-May. Usually multiple freezes per day. Have not observed freezing for the last 5 days or so, though -- operating like normal again.

Just an update: Lately the issue happens a lot less frequently, but it's still there.
I suspect it has nothing to do with the ubiquitous bootloop issue (as mine has been repaired before the freezing issue appears, while @biff-torkington experiences freezes without having the bootloop issue).
Still no idea what can be done to remedy this situation.

No freezing at all in my 16 month old bullhead currently on stock rooted 7.1.2 with phasma kernel, no previous bootloops or hardware repair. I have never updated ota however and have run a custom ROM the majority of the time since I've had it, no idea if that would make a difference or not

The answer is simple:
2GB Ram + badly written ram hungry apps like messenger.
Best solution is to get another phone.Oh well...

General Reboot/Shutdown Possible Solution

For anyone getting reboot or shutdown issue try this.
If you applied any custom theme from the theme store, it cause reboot issue.
Either factory reset or choose the DEFAULT theme from the store.
I saw 2 people solving this issue on reddit by applying the default theme back.

i've tried one time, the default setting seems to mitigate (not solve the problem) but in my experience any change you make to the phone will make the problem start and is not reversible.
even though this is probably a Placebo effect, it means even turning on 120hz display, AOD or installing your own apps will make the phone start to behave badly.
After numerous experiments i've also tried to keep the phone on the "first config" page and it still shut down itself in around 10 mins. My problem was far worse than most of other users so i decided to ship it back
This makes me think that my phone had hardware issues or the problem lays too deep into the software to be solvable by the user.

GranoTurc00 said:
i've tried one time, the default setting seems to mitigate (not solve the problem) but in my experience any change you make to the phone will make the problem start and is not reversible.
even though this is probably a Placebo effect, it means even turning on 120hz display, AOD or installing your own apps will make the phone start to behave badly.
After numerous experiments i've also tried to keep the phone on the "first config" page and it still shut down itself in around 10 mins. My problem was far worse than most of other users so i decided to ship it back
This makes me think that my phone had hardware issues or the problem lays too deep into the software to be solvable by the user.
Click to expand...
Click to collapse
My phone doesn't shut down anymore, since i enabled AOD. But they are aware of this problem.. and they will fix it in the next few weeks.. ;-)

You're supposed to know this issue has been occuring on hundreds of users' on K40's China forum, some of which reboot for several times a day.
View attachment ccf321dfdd852c2b2ed4e7f5cfa5ea49 (1).webp

can u confirm that 12.0.5 update fix random reboots and shutdowns ?
i want to buy this phone but i afraid of this problem
i had mi 8 with random reboots and it never get fixed, i think it was hardware problem
i want to for poco f3 it is hardware or software

omidzht said:
can u confirm that 12.0.5 update fix random reboots and shutdowns ?
i want to buy this phone but i afraid of this problem
i had mi 8 with random reboots and it never get fixed, i think it was hardware problem
i want to for poco f3 it is hardware or software
Click to expand...
Click to collapse
For me it's fixed since 12.0.5.0 .. no reboots, no shutdowns.
on 12.0.2.0 and 12.0.4.0 i've had shutdowns every 2-3 hours if AOD was off.
Now AOD is off since 12.0.5.0 and everything is fine!

+1 it's fine too on 12.0.5