Develop Bugs

Phone randomly rebooting

Hi all
Apologies if this has been covered before, but I've done many searches and can't find something that matches my unique symptoms, that has pin pointed the root cause.
I've basically got an Australian model LG G3 (D855), and for about the last 3-4 months it has been randomly rebooting itself. It is generally (but not always) triggered when I'm undertaking an action (playing a game, taking a photo, opening an app).
It seems to have progressively gotten worse, to the point where lately it's at time going into an infinite loop, which can only be broken by plugging the phone in to charge it (often pulling the battery out and putting it back in does nothing, as it just continues to reboot once I power it on again).
The whole thing is very random. Some days it can go hours on end without happening. Others, it's every few minutes.
I'm beginning to think that it's battery related, but have read other reports of people with similar issues who have replaced the battery, but with no success, so am not sure. The phone is rooted and currently on a custom rom, but the issue predated the ROM (ie occured on the stock ROM also).
Any suggestions, advice, ideas would be greatly appreciated.
cheers!

So I ended up replacing the battery and problem solved (got someone to test the battery and it was completely stuffed).
/thread

I had the same issue and my phone getting random shutdown and only way to turn it on was to pull the battery.
I went to LG service center and they replaced motherboard without any tests.
And now the issue is gone. It seems LG is also aware about this issue.

Battery problems and Bricked Phone

Hi,
Had the elephone p8000 for a couple of weeks now and have been very happy with it - updated without problems OTA to the latest stock image, rooted to change the lock screen - but made no other changes to the phone.
Yesterday the battery had run down to approximately 3% - I plugged in to a charger and after about 15 minutes the phone was reporting the battery as 79% full. Which didn't seem correct!
I then used the phone for approximately 10 minutes, after which, without any warning, it suddenly died.
It now won't charge, turn on, or be recognised by a PC.
I've tried charging up overnight - but it still doesn't turn on.
I think whats happened is that the phone has got itself confused over the battery level and then fully discharged the battery to absolute 0 - as it didn't realise it needed to preserve a residual amount of charge.
Anybody got any ideas on how I can rescue this? I've tried all combinations of power, volume +/-.
Would a new battery solve the issue as a last resort?
It's a real pity, as up to then the phone had been great.
Thanks

I have had this type of problem with my old nexus 4 a few times ,phone gone dead no display or charging light,unable to charge using different chargers I had to disconnect battery for a short amount of time
Reconnected battery and everything was charging as expected and phone would power up????? not sure how easy it is to disconnect on P8000 have not had a look at mine
yet

Thanks - I think this maybe the solution. Problem is - having looked at a couple of videos, taking the battery out looks reasonably straightforward - but one of the screws (bottom right hand corner) has a tiny elephone sticker covering it - I assume this is an anti tamper device and will invalidate my warranty (with gearbest).
Not sure if to just give it a go - or spend the cash (£8ish) and send back to gearbest and run the risk of them kicking up problems and refusing to repair. Decisions!
Thanks

Try this:
Press power for around 20s. Release.
Plug charger.
Wait 5minutes.
Press power for around 5s. Release.

Bricked P8000
Hello, I have the same phone and the same problem, i already tried to change for the stock rom, but nothing! My phone doesn't charge or power on, I don't know what else I can do!

Not been able to get it to respond in any way... Have ordered a new battery.
Tried suggestion above but no change...
If you can and it's under warranty I'd try and send back to wherever you got it from.
As a matter of interest did yours show any strange behaviour around charging before it died?
All very annoying!
Thanks

Bricked P8000
How much the battery cost? You will change the battery (by yourself)?

I ordered the battery from Ali express £15 / $22 U.S.
Comes from China so might be a while to arrive.
I was going to change the battery myself - There are some videos online and it looks reasonably straightforward.
However - there is always the risk that the battery wasn't the problem / that I break a ribbon cable / fry the motherboard etc... or something else bad happens - but I thought that (for me) it was worth the risk for the money - this may not be the case for everyone.
Once I get the battery I will repost and let people know if it worked or not...

hello, I have similar problem. Can you tell me did the battery replacement solve the problem?

Hi,
Waited 60 days for the battery to arrive from China and it didn't! Gave up until I saw someone here (in the UK) selling them on ebay so bought one, fitted it to the phone (need to take about 12 screws out and remove the metal plate) and.....
It works! I've reflashed the phone to the Cyanogenmod ROM the guys on this forum have been working on (and it's great work) and am using it as my daily phone without any major issues - I'd even managed to not break the fingerprint scanner (as this needs to be removed to take the battery out).
So yes - a new battery solved my problem - I can't guarantee it will solve yours however - and the battery wasn't that cheap (£20 GBP) but I've got a fully working phone again.
To reiterate the problem I had - the phone suddenly charged really quickly to a high percentage, it then just suddenly died when still showing a reasonable amount of power (probably because the battery %age was not being reported correctly) and wouldn't react in any way. By fitting a new battery after this my phone came back to life in exactly the same state as it had been before. But I can't guarantee it will work for everyone
Good Luck!

LG G4 won't charge: repeat problem (not bootloop, not quick charge)

I'm new to XDA and likely know very little of what I'm talking about, so forgive me if I make a blunder.
I am currently on my second G4 since August of 2015. My first issue was one in the line of faulty devices, so once the front facing camera fritzed out, it was replaced.....with another device in the faulty range. Thankfully, I've only had this particular issue with the second device: charging. A few months ago, my phone stopped charging. Even when on the (factory-issued) charger, it was "discharging" when plugged in. For several days I was in a limbo of having it on the charger 24/7 and not using it whatsoever, all the while it was steadily dying. After doing everything I could find to do - taking out the sd card, deleting several apps, pictures, text threads, running several different virus scanners, clearing out all unnecessary files and everything else, it was still discharging. Then one morning I woke up and it had charged completely. From that day on, it charged fine, though not as quickly as it once did.
Within the next few days, I purchased a quick charger from Target. Couldn't tell you the brand - it was on a whim. It worked great. Charged my phone completely in about 1.5 hours, and I was still getting my usual 12-15 hours of use out of the phone per charge. Then, this past Sunday, despite my phone being on the charger all night, my phone was dead by morning and I had missed my alarm.
-The phone, when plugged in, recognizes that it's being charged. The battery icon reflects it, and the status via settings says "charging," with an estimated charge time.
-Around 40% or so, the phone stops progressing to be charged, and starts heading the other direction, dying eventually. The battery status via settings (and the icon) still indicates that it's being charged.
-The charger will charge my extra battery in its dock that I got with the G4 promotion. I am now keeping an extra battery charged at all times to replace when one dies, since the phone itself can't be charged. I hate to be removing my battery cover every single day though, as I don't want to wear it out/accidentally damage the NFC connectors.
*The issue: because I've experienced odd charging issues before that seemingly resolved themselves, I'm hesitant to rule that it's simply the charger, the phone charging port, or one of the batteries (the least likely of the three options.)
Has anybody anywhere ever had this issue? I've searched loads of forums and done plenty of Google searches, but have yet to find someone describe the problems I'm describing here.

New Battery has Odd issue

Greetings, all.
I am in dire need of help. My plight is as follows:
I am soon going off to college and have a Samsung Galaxy Tab Pro 8.4, SM-T320. I am fairly technical, and have fixed computer parts prior. However, I had weak charging, and I decided to pop the back off to get the serial number of the current battery. It was a T4800E, in case that is relevant. I went to eBay, purchased the battery, and just installed it about half an hour ago. I expected the battery to be low and/or dead, so I plugged it in. I immediately have an issue which I am not sure is severe or harmful to my device.
Currently, the tablet is sitting next to me on a stand, plugged in, and the oddest thing on the screen: the battery charging animation when powered off (the battery in the center of the screen) is starting (i.e. showing the "loading circle" in the battery), but is not actually showing the charging bar animation, powering off, and repeating. I will leave it overnight, replying in the morning with an update if you wish to know, and if the problem ceases, I will simply delete this thread.
If this is still up the day after OP, it is likely still going on (check below for an update from me), but I just want to get an answer as soon as possible.
To answer some possibly-relevant questions:
Yes, I still possess the original battery, and can replace if you feel is a good idea.
Unfortunately, I am completely opposed to cracking or anything of that sort, as I wish to avoid the possibility of bricking and/or permanent damage.
Thank you in advance for any help,
Chronotides

[H812] G4 Died Overnight?

My G4 was plugged in overnight to charge, and on the following day, I woke up to notice it was completely dead. Strange I thought because it wouldn't respond to anything (recovery/download mode, normal boot, etc.). I assumed it was just the battery's time to die so I ordered a new one off Amazon (PowerBear). I put it in the phone, and it started turning on. Whew, it's back... Right? Suddenly, the screen shuts off during the LG boot logo (before the animation). WTF? Now I'm back at square one. Phone doesn't respond to anything. A couple battery tricks where I take it out and hold the power button for 30 seconds can sometimes get it to show the empty battery screen when connected to my computer, but even that's very rare. If I try putting the battery in at this part, it shows a battery loading animation and then the phone freezes indefinitely.
I've tried multiple USB cables, computers, and A/C adapters. No matter what, I can't get the phone into recovery or download mode. My computers can detect the correct driver as the phone is dead but it still won't work in LGUP. I've also returned the PowerBear battery, arguably prematurely.
If it's of any relevance, I had my G4 screen replaced by a third-party repair store a month prior to this incident, and I find it hard to believe it's just a coincidence my phone dies not too long after. Based off what I know, this isn't a bootloop issue. My friend who works at another repair shop insists it's the motherboard but can't fix it since they no longer have an LG technician. However, before all this, my Android OS was acting super funky - "Android is upgrading 300 apps..." for 20mins upon each reboot, despite it being the latest software, and my data limits had a glitched out schedule where it thought the phone was in the year 2023 despite date/time being set correctly. I had plans to reset the software but not being able to boot the phone anymore has prevented it, obviously.
According to the serial number, the phone was manufactured in November 2015, which I believe is past the date of when the faulty G4s were distributed. So what gives!?
The freakiest part of this is that my iPhone 7 Plus - which was at 100% battery (unplugged) before I fell asleep, was completely drained when I woke up on the same day. I also have no idea what that's about.
Any and all replies are appreciated. Thanks for reading!

SuperGlueG4 said:
My G4 was plugged in overnight to charge, and on the following day, I woke up to notice it was completely dead. Strange I thought because it wouldn't respond to anything (recovery/download mode, normal boot, etc.). I assumed it was just the battery's time to die so I ordered a new one off Amazon (PowerBear). I put it in the phone, and it started turning on. Whew, it's back... Right? Suddenly, the screen shuts off during the LG boot logo (before the animation). WTF? Now I'm back at square one. Phone doesn't respond to anything. A couple battery tricks where I take it out and hold the power button for 30 seconds can sometimes get it to show the empty battery screen when connected to my computer, but even that's very rare. If I try putting the battery in at this part, it shows a battery loading animation and then the phone freezes indefinitely.
I've tried multiple USB cables, computers, and A/C adapters. No matter what, I can't get the phone into recovery or download mode. My computers can detect the correct driver as the phone is dead but it still won't work in LGUP. I've also returned the PowerBear battery, arguably prematurely.
If it's of any relevance, I had my G4 screen replaced by a third-party repair store a month prior to this incident, and I find it hard to believe it's just a coincidence my phone dies not too long after. Based off what I know, this isn't a bootloop issue. My friend who works at another repair shop insists it's the motherboard but can't fix it since they no longer have an LG technician. However, before all this, my Android OS was acting super funky - "Android is upgrading 300 apps..." for 20mins upon each reboot, despite it being the latest software, and my data limits had a glitched out schedule where it thought the phone was in the year 2023 despite date/time being set correctly. I had plans to reset the software but not being able to boot the phone anymore has prevented it, obviously.
According to the serial number, the phone was manufactured in November 2015, which I believe is past the date of when the faulty G4s were distributed. So what gives!?
The freakiest part of this is that my iPhone 7 Plus - which was at 100% battery (unplugged) before I fell asleep, was completely drained when I woke up on the same day. I also have no idea what that's about.
Any and all replies are appreciated. Thanks for reading!
Click to expand...
Click to collapse
All devices up to March 2016 (so 603) are affected by the ilapo. Your story above sounds exactly like the ilapo. Read my signature for the ilapo fix list which may bring up some hours/days/months life back.
Sent from my LG-H815 using XDA Labs

SuperGlueG4 said:
My G4 was plugged in overnight to charge, and on the following day, I woke up to notice it was completely dead. Strange I thought because it wouldn't respond to anything (recovery/download mode, normal boot, etc.). I assumed it was just the battery's time to die so I ordered a new one off Amazon (PowerBear). I put it in the phone, and it started turning on. Whew, it's back... Right? Suddenly, the screen shuts off during the LG boot logo (before the animation). WTF? Now I'm back at square one. Phone doesn't respond to anything. A couple battery tricks where I take it out and hold the power button for 30 seconds can sometimes get it to show the empty battery screen when connected to my computer, but even that's very rare. If I try putting the battery in at this part, it shows a battery loading animation and then the phone freezes indefinitely.
I've tried multiple USB cables, computers, and A/C adapters. No matter what, I can't get the phone into recovery or download mode. My computers can detect the correct driver as the phone is dead but it still won't work in LGUP. I've also returned the PowerBear battery, arguably prematurely.
If it's of any relevance, I had my G4 screen replaced by a third-party repair store a month prior to this incident, and I find it hard to believe it's just a coincidence my phone dies not too long after. Based off what I know, this isn't a bootloop issue. My friend who works at another repair shop insists it's the motherboard but can't fix it since they no longer have an LG technician. However, before all this, my Android OS was acting super funky - "Android is upgrading 300 apps..." for 20mins upon each reboot, despite it being the latest software, and my data limits had a glitched out schedule where it thought the phone was in the year 2023 despite date/time being set correctly. I had plans to reset the software but not being able to boot the phone anymore has prevented it, obviously.
According to the serial number, the phone was manufactured in November 2015, which I believe is past the date of when the faulty G4s were distributed. So what gives!?
The freakiest part of this is that my iPhone 7 Plus - which was at 100% battery (unplugged) before I fell asleep, was completely drained when I woke up on the same day. I also have no idea what that's about.
Any and all replies are appreciated. Thanks for reading!
Click to expand...
Click to collapse
You need a new battery

deltadiesel said:
You need a new battery
Click to expand...
Click to collapse
Lol
Sent from my LG-H815 using XDA Labs

I had something similar happen, except it is a 2016 model, I believe, to sum it up:
The battery seemed to be starting to die, so I bought a battery of eBay, but it also was having pretty bad battery life, so I drained the battery, to calibrate it, but now my G4 (H812) refuses to show any sign of life when I plug it in, or try to turn it on, is it also the Ilapo/Bootloop issue, or something else?