Develop Bugs

Re-Lock LG-G4 warranty issue

Hi together,
I've sold a LG G4 eight weeks before. The phone was unlocked via the official LG developer method and cyanogenmod.13 was installed. The phone works well, but for 2 weeks the camera does not work any more. After resetting, the camera works fine for a few hours. I have reset and reinstall the original lg software via lg update tool but the camera defect is still available. I'm pretty sure that issue is a hardware issue.
To create a warranty issue, the bootloader must be re-locked again.
Do you have any ideal to (re-lock) lock the bootloader again? Otherwise I have to pay to repair a 8 weeks old phone.
Note: I'm new in this forum. Therefore it was not allowed to open a issue within the developer section.
regards,
dreas

You cant re-lock the bootloader. Unlocked is unlocked. Its written everywhere...no way back!

I've successfully send mine for repair after applying 24V to the battery contacts (batter removed) and frying the mainboard. It was the only way to get them to fix it and it worked.

maildaemon said:
I've successfully send mine for repair after applying 24V to the battery contacts (batter removed) and frying the mainboard. It was the only way to get them to fix it and it worked.
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Which service point/country did you use? The IMEI number is well known for LG that this phone was unlocked. Did you use the official unlock process from LG itself?

Just buy a new camera off ebay. They're about $20 and fit it yourself
Sent from my LG-H815 using XDA-Developers mobile app

tavablub said:
The IMEI number is well known for LG that this phone was unlocked. Did you use the official unlock process from LG itself?
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How would LG know this IMEI is unlocked? Having gone through the web process to download the needed files doesn't mean one has used them (like me).
http://forum.xda-developers.com/showthread.php?p=66285689
Unless the phone itself transmits its unlocked state *after it is actually unlocked*, LG can't claim it is unlocked just because you downloaded the files.

In E.U any software modification are legal by the law, and LG can't cancel the warranty, so if you are in Europe you have no problem.

mkiller88 said:
In E.U any software modification are legal by the law, and LG can't cancel the warranty, so if you are in Europe you have no problem.
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i had no luck in germany.

mkiller88 said:
In E.U any software modification are legal by the law, and LG can't cancel the warranty, so if you are in Europe you have no problem.
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Click to collapse
That is not true. I've been in contact with several entities to be able to know if that was true and they always said that the warranty is void. There is always a chance they don't care you have the bootloader unlocked and still fix your phone but you shouldn't count on it. In short, if you are lucky you can get your phone fixed. I'm still waiting for LG's response to whether should they fix the phone if you had the bootloop problem and the bootloader unlocked but if the problem is not that I doubt they will fix it.

What entities would that be?
Problem is that companies don't like regional warranty laws, and will often play misinformed or ignorant of them, so they will inform you about *their* side of the story.
Fact is they *have to* honor them, but won't do so unless they are made to. Which often means the consumer has to take it further, which is time (and maybe money) consuming, so, many of us don't do it. And of course the companies know it and count on it.

EPa said:
What entities would that be?
Problem is that companies don't like regional warranty laws, and will often play misinformed or ignorant of them, so they will inform you about *their* side of the story.
Fact is they *have to* honor them, but won't do so unless they are made to. Which often means the consumer has to take it further, which is time (and maybe money) consuming, so, many of us don't do it. And of course the companies know it and count on it.
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I talked to the seller and lg itself. The thing is the time/money you will spend putting lg in court won't compensate for the phone. If they don't want to fix the phone they won't fix the phone unless you know some laywer that works for free
Sent from my LG-H815 using XDA-Developers mobile app

Exactly my point. So, several entities were basically LG. No consumer rights organization, no law googling, and yet you started your post with "That is not true".

EPa said:
Exactly my point. So, several entities were basically LG. No consumer rights organization, no law googling, and yet you started your post with "That is not true".
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I'm sorry if I wasn't explicit enough. What I mean is: If LG doesn't fix your product you won't get it fixed unless you lose 10 years of your life worth in trouble. Even if you go to any consumer rights association you won't get your phone fixed before 6 months or so. Can you handle 6 months with no phone? My point being, if you want to keep your warranty don't unlock the bootloader despite the fact we are right we have no power to make the law count.

Agreed.

It's legal to unlock your bootloader in EU, but LG doesn't recognize that and they've answered me to proceed with suing them - they do not care Just go to a local repair shop - any would do, and tell them to apply 24V to the battery contacts - it will fry the mainboard and leave you with the possibility to return it for a repair. The phone acts as if it's in the Qualcomm mode - a know problem with the G4, so they will just replace the board and give you back the new one. Of course they don't know whether your bootloader is unlocked or not. Just don't tell them when bringing the phone to the repair center (duh)

maildaemon said:
It's legal to unlock your bootloader in EU, but LG doesn't recognize that and they've answered me to proceed with suing them - they do not care Just go to a local repair shop - any would do, and tell them to apply 24V to the battery contacts - it will fry the mainboard and leave you with the possibility to return it for a repair. The phone acts as if it's in the Qualcomm mode - a know problem with the G4, so they will just replace the board and give you back the new one. Of course they don't know whether your bootloader is unlocked or not. Just don't tell them when bringing the phone to the repair center (duh)
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That seems to be the best answer to the problem. Fight fire with fire xD

sirsomething said:
I'm sorry if I wasn't explicit enough. What I mean is: If LG doesn't fix your product you won't get it fixed unless you lose 10 years of your life worth in trouble. Even if you go to any consumer rights association you won't get your phone fixed before 6 months or so. Can you handle 6 months with no phone?
Click to expand...
Click to collapse
Not it if you know how to argue with them like this guy
As a 'gesture of goodwill' they fixed it
My point being, if you want to keep your warranty don't unlock the bootloader despite the fact we are right we have no power to make the law count.
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agreed even though i live in India and have no chance whatsoever of unlocking any bootloader.

Spillunke said:
i had no luck in germany.
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It seems this http://forum.xda-developers.com/showthread.php?p=64779773 guy in Germany was luckier than you.. maybe pm him?

After emailing lg they said I could send the phone to be analysed and if it was their problem they would fix it. However there is always the chance they say it was our fault but at least they won't reject it before knowing what the problem is
Sent from my LG-H815 using XDA-Developers mobile app
Edit: this is for LG Portugal

sirsomething said:
After emailing lg they said I could send the phone to be analysed and if it was their problem they would fix it. However there is always the chance they say it was our fault but at least they won't reject it before knowing what the problem is
Sent from my LG-H815 using XDA-Developers mobile app
Edit: this is for LG Portugal
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can you post update please of your situation. when you get nay news about your phone.

Cant find a straight answer is 510 serial safe from bootloop

No one can answer this. All of you that have had 510 serials please give feedback
So far we got confirmed. Please post all your bootlooped serials here so we can have a dedicated thread to lessen the confusion
505
506
510

No
602 and above will safe
Sent from my LG-H818 using XDA-Developers mobile app

[email protected] said:
No
602 and above will safe
Sent from my LG-H818 using XDA-Developers mobile app
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So where is the source where you get that?
---------- Post added at 08:05 AM ---------- Previous post was at 08:04 AM ----------
TheMadScientist420 said:
No one can answer this. All of you that have had 510 serials please give feedback
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I have 510 and its perfect not a single issue. since 9 months

TheMadScientist420 said:
No one can answer this. All of you that have had 510 serials please give feedback
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Click to collapse
Why? Nobody knows what serials are affected or the extent of the problem. Keep daily backups (as you should be doing anyway) and worry about it if it bootloops. Here's a hint - it probably wont.
[email protected] said:
No
602 and above will safe[/URL]
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Source?

[email protected] said:
No
602 and above will safe
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I don't believe this at all. 602 was basically the newest revision anyone could quote at the time that LG "Acknowledged" there was a fault.
There have been reports of 603 units with the problem somewhere. (On either Reddit or this forum, can't remember where)
Given the way that LG are handling warranty claims and not honouring repairs for boot looped devices which are rooted or bootloader unlocked.
I think its way more likely that LG have just realised that most devices seem to take around 6 to 9 months before they fail, its easy to cost manage the issue by swapping them all around with minimal repairs until all warranties have expired.
I doubt they are making any new G4's now that the G5 is out. They will be hoping everyone who has a failed device with no repair options will just upgrade to the G5.
Those of which move to other suppliers would be considered acceptable losses.

OllieD said:
I don't believe this at all. 602 was basically the newest revision anyone could quote at the time that LG "Acknowledged" there was a fault.
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LG has never acknowledged anything.
No need when they already replace any faulty device under warranty. Can't get a warranty then look for another device that comes with one.
Given the way that LG are handling warranty claims and not honouring repairs for boot looped devices which are rooted or bootloader unlocked.
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If its bootlooping how can they even tell whehter its rooted or bootlooped. I've read accounts where they've replaced motherboards and returned the device.
---------- Post added at 03:20 PM ---------- Previous post was at 03:19 PM ----------
TheMadScientist420 said:
No one can answer this. All of you that have had 510 serials please give feedback
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Click to collapse
I've got one, no problems.
Its dual sim and the number of people with dual sim i find complaining about boot loops is minuscule. Mostly the single sim lot. I'll take my chances.
Guess what, if mine goes south, i use warranty. If no warranty left, i'll buy another G4 with warranty at half the price i paid when it launched.
What am i going to do with those leather backs and cases otherwise

One Twelve said:
LG has never acknowledged anything.
No need when they already replace any faulty device under warranty. Can't get a warranty then look for another device that comes with one.
If its bootlooping how can they even tell whehter its rooted or bootlooped. I've read accounts where they've replaced motherboards and returned the device.
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Click to collapse
The never officially acknowledged anything hence the quotes.
They unofficially confirmed to android authority that there was a problem here:
http://www.androidauthority.com/lg-admits-g4-bootloop-problem-hardware-fault-669603/
Unlocking the device requires submitting the IMEI/DeviceID to LG which they can use as a warranty blacklist.
AFAIK an unlocked device advertises its unlocked status on the bootloader which is visible before the boot-loop occurs.
LG have a root checking service called RCT which logs the date and time of any root related files/binaries to the /persist partition and I believe it also sets a flag in an RCT partition.
It builds a log file of which exact root elements it has seen eg su binaries/ busybox binaries forbidden file extensions and the date/time it detected the latest one of these elements.
Simply enter the hidden menu and find the RCT option to see your devices status.
LG can simply disable the faulty cores on a boot-looping device and check any/all of these.
The best way to hide root that I have read on here is to fry the motherboard by applying 24v to the battery contacts. If LG did refuse to warranty though you have absolutely no chance of recovering from that.

OllieD said:
The best way to hide root that I have read on here is to fry the motherboard by applying 24v to the battery contacts.
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Is there no way for them to detect this ?

One Twelve said:
Is there no way for them to detect this ?
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Nothing is undetectable.... The post I read this idea from suggested that this forced the device into the Qualcomm recovery mode (most likely the flash chip can not handle the 24v but the lower level hardware can).
Given that the source of the problem is a faulty solder connection to the flash chip. this advances the problem past the faulty connection stage to the completely disconnected/shorted flash memory stage.
If they cannot boot/read the flash memory chip at all they have no way to prove you rooted. providing you didn't unlock your bootloader.
Obviously if you push it too much, physical damage like burn marks would be a giveaway of foul play.
I read one user had been denied warranty due to oxidation on the mainboard... given the faulty soldering and thermal issues this could cause oxidation/residue on the mainboard.
Another user was refused warranty because a warranty sticker was not present on one of the screws of his device. (This concerns me because my device has no such visible stickers)
I personally have a 506 device tied to a 24month upgrade contract that I started in Feb, I usually bootloader unlock and root within hours of unboxing but read about this issue first and have kept my device stock.
I'm hoping I do not get a boot-loop but think its a matter of when rather than if.

OllieD said:
If they cannot boot/read the flash memory chip at all they have no way to prove you rooted. providing you didn't unlock your bootloader.
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If you're not on a euro G4 BL unlock isn't possible to begin with.
Obviously if you push it too much, physical damage like burn marks would be a giveaway of foul play.
I read one user had been denied warranty due to oxidation on the mainboard... given the faulty soldering and thermal issues this could cause oxidation/residue on the mainboard.
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Right, this is what i was hinting at. You have to be desperate to try something like this which could end up forfeiting everything.
Another user was refused warranty because a warranty sticker was not present on one of the screws of his device. (This concerns me because my device has no such visible stickers)
I personally have a 506 device tied to a 24month upgrade contract that I started in Feb, I usually bootloader unlock and root within hours of unboxing but read about this issue first and have kept my device stock.
I'm hoping I do not get a boot-loop but think its a matter of when rather than if.
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if you're on a contract then you're covered for the 24 months. Nothing to worry about.
yes there is no root. That unfortunately is the situation we are in, every brand has some unnecessary drawback or other.

Well unfort i got a sprint varient but no longer with sprint. Im sure lg wont fix mine if it did happen. I cracked my digitizer about 2 days ago so now the phone has its first sign of damage. And knowing lgs good for nothin high and mighty butts theyll tell me thats what did the boot loop. And for them hoping ill upgrade yea rite never again. Ive been using my old internation edition note 1. Just because its rooted and custom recovery. Id rather go old skool than deal with lg any more.

Plus i thermal paste every device ive owned back since my og evo 4g. So theyll know ive been in mine.

Also as for the waranty sticker mine didnt have one either

Just saw on the russian 4pda, 510 failed with bootloop as well
http://4pda.ru/forum/index.php?s=&showtopic=670897&view=findpost&p=49696004

undef1ned said:
Just saw on the russian 4pda, 510 failed with bootloop as well
http://4pda.ru/forum/index.php?s=&showtopic=670897&view=findpost&p=49696004
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Click to collapse
Have been wondering about the Russians as they have dual sim as well.
Do they have any poll to see which Russian devices had boot loop problems by serial#

One Twelve said:
Have been wondering about the Russians as they have dual sim as well.
Do they have any poll to see which Russian devices had boot loop problems by serial#
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The poll was there, but was removed 2 weeks ago, possibly new one will be back. Some ppl participated and answered that they don't have a bootloop, but later they had to change their vote and that was not possible... I don't remember the numbers, but the problem is also available on H818, many people go to the Service with it
BTW, in Russia / Ukraine only 1 year of warranty, so it's going to be interesting soon Mine was bought in Poland, bootlooped, now in service

undef1ned said:
The poll was there, but was removed 2 weeks ago, possibly new one will be back. Some ppl participated and answered that they don't have a bootloop, but later they had to change their vote and that was not possible... I don't remember the numbers, but the problem is also available on H818, many people go to the Service with it
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Click to collapse
It will be interesting if it starts again. I wonder why they removed it. Should have left it as is.
From the poll here, the ratio of devices with bootloop is highest with 505, fewer with 506 then keeps getting lower as the months go on. Yes there are some that have a problem but we don't know how many don't have a problem. They are quietly happy
BTW, in Russia / Ukraine only 1 year of warranty, so it's going to be interesting soon
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1 year warranty in India too. 30k G4's imported. Number of Indians who complain about bootloop on xda ? can't find any. Why.
There have been other issues with earlier models, screen problems. One guy had the phone die. he said not bootloop.
Hong kong is another and Indonesia but again they say like you many, there is some noise for a month then it goes quiet.
But the single sim thread it never goes quiet.
Mine was bought in Poland, bootlooped, now in service
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yes i noticed it was a 506.

As time goes on ill try to add all confirmed bootloop serials in post 1

undef1ned said:
Just saw on the russian 4pda, 510 failed with bootloop as well
http://4pda.ru/forum/index.php?s=&showtopic=670897&view=findpost&p=49696004
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Click to collapse
With the help of google translate did a search on the LG section for the word 'butlup' (short for butlupnikov ) in cyrillic and found about 24 reports.
There is no pattern, only half of those 24 mention the serial#. Some earlier serials 505, 506, 507and some more recent ones 510, 601etc. The impression you would get is any number can bootloop which isn't what we found here.
Agree with what sergei says here.
In general, a matter of luck, like in any other phone. There is more panic, which somehow affects people. I, too, this fact forced to think about the choice of an alternative, but I did not find one, considering the price and characteristics. A camera for me is probably the most important point. None of the phone for the same price no camera, even close similar to G4 camera. The only option may be a Galaxy S7 / S7Edge. But twice the cost (comparing with G4 price) immediately makes to abandon its purchase.
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Can I repair a bootlooping device myself?

I have unlocked my bootloader and rooted my device (H815, s/n 506*, EU); and therefore LG does not want to repair my LG G4 under warranty.
Can I repair it myself, maybe replace the motherboard or something? Does anyone really know what the exact problem is? Where should I get replacement parts?

You need to just put it back to stock then call back and don't mention that it was ever rooted. It doesn't matter if it was or not anyway.
Sent from my LG-H811 using Tapatalk

I already sent it in, so they know. I want to repair it myself.

whizz said:
I already sent it in, so they know. I want to repair it myself.
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yes replace MB yourself or use the modded TOT to use only 4 cores and big cores disabled

whizz said:
I have unlocked my bootloader and rooted my device (H815, s/n 506*, EU); and therefore LG does not want to repair my LG G4 under warranty.
Can I repair it myself, maybe replace the motherboard or something? Does anyone really know what the exact problem is? Where should I get replacement parts?
Click to expand...
Click to collapse
Mbs are about 200 dollars american. A little pricy in my opinion but one of the most simple setups ive ever seen

You can try all the methods mentioned above, have it fixed in a repair shop (they'll re-solder the flash chip) or even put it in the oven. But it won't help. It'll only work temporarily.

yep !Buy new mainboard and then replace .
BUt EU 2 year !!
If well know hardvwre issu i think lg don't refuse repair!!!Kick the frakking table mate good luck! see this:
http://piana.eu/root

@kabirjedi unlocking your bootloader do indeed void your warranty. He cannot do anything with it and link you posted is about installing CFW or rooting fw alone.

From my observations the processor is the only problem, more accurately, the two faster cortex a57 cores. Some how they broke hence the phone cannot be booted up as it returns that them 2 cores are unavailable. Thats why this tot method works.

TheRadziu said:
@kabirjedi unlocking your bootloader do indeed void your warranty. He cannot do anything with it and link you posted is about installing CFW or rooting fw alone.
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Lg admit o.day hardware issue must repair. for free.
Mate! LG not overwrite EU law.....
If not go to consumer protection and start
proceedings
100% win
ohh my 666.post

kabirjedi said:
Lg admit o.day hardware issue must repair. for free.
Mate! LG not overwrite EU law.....
If not go to consumer protection and start
proceedings
100% win
ohh my 666.post
Click to expand...
Click to collapse
Congratz on your 666th post
I agree with that it SHOULDN'T void warranty, but sadly it does and AFAIK in Poland no one managed to get it fixed for free with unlocked bootloader, even if this EU law was mentioned. I dont know how they manage to overwrite Eu laws but they sure know how to confuse the customer and leave him with 1600PLN bill (price for repair outside of warranty)
Luckly I just had unbranded FW + root + xposed without having bootloader unlocked so they replaced mobo without any problems.
Anyway I wish you best of luck in your case, OP. Do what @kabirjedi suggested, perhaps you will have more luck in your country

the way i see it. is no matter what phone is defective. i dont think a phone because of unlock bootloader will bootloop. it will brick for sure so they are very different things . but LG sees this a potential to make bootloop more easily affected. thats non sense.. theres phones like S2 running great G2 with bootloader unlocked running great.. this is hardware no sofware... maybe heat plays a role...only way i see it can trigger it is overclocking it... but if you unlock and debloat phone should runs better with less apps that are crap.. one exmaple is disable logd.. that helps the CPU.

raptorddd said:
the way i see it. is no matter what phone is defective. i dont think a phone because of unlock bootloader will bootloop. it will brick for sure so they are very different things . but LG sees this a potential to make bootloop more easily affected. thats non sense.. theres phones like S2 running great G2 with bootloader unlocked running great.. this is hardware no sofware... maybe heat plays a role...only way i see it can trigger it is overclocking it... but if you unlock and debloat phone should runs better with less apps that are crap.. one exmaple is disable logd.. that helps the CPU.
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Time and time again it has been confirmed that this has nothing to do with bootloader being locked or unlocked. This is manufacturing issue that was firstly acknowledged when they recalled all Sprint models with 505xxx S/N but other providers/suppliers ignored it and carried on selling faulty devices just to meet sales targets. Make sales first and worry about the potential issues later is the common practice nowadays. For the suppliers it was always the possibility of either developing the bootloop or not. For LG replacing just motherboards still means a sold device at the end of the day. And don't worry in this competitive market companies do anything to meet the sales targets... Headaches for us -> small inconvenience for LG.

On reddit people suggested resoldering the CPU, I might give that a shot.

will my g4 bootloop?

Hi, just bought a second hand g4 with serial number starting 509 will the phone possibly bootloop? Also the phone is the Taiwan model and I currently live in the UK, will having the Taiwan model cause any problems? Thanks

It may Bootloop it may not. There is no definite answer. You may have problems with a non EU model in the EU. They may fix it or may not. You have to ask an LG service centre about this.

Riardon said:
It may Bootloop it may not. There is no definite answer. You may have problems with a non EU model in the EU. They may fix it or may not. You have to ask an LG service centre about this.
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Thanks but is the 509 model known to update?

rmantech said:
Thanks but is the 509 model known to update?
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If you ask if 509 is prone to Bootloop issue I think it is. Most bootloops happened on 505 though but the general consensus is the newer G4 you have the less chances for bootloop. Again there is no definite answer. We do not know the dirty details. We don't know which S/N is safe and if LG fixed the problem and from which S/N and after they did. We purely rely on public reports to draw conclusions. Up until now 6xx seems safe with only 1 or 2 ppl reported a bootloop on Reddit. Just make a backup and keep your data on the SD card. If you get a bootloop contact LG. They seem to be aware of the issue and fixing all broken phones even out of warranty some times.

Riardon said:
If you ask if 509 is prone to Bootloop issue I think it is. Most bootloops happened on 505 though but the general consensus is the newer G4 you have the less chances for bootloop. Again there is no definite answer. We do not know the dirty details. We don't know which S/N is safe and if LG fixed the problem and from which S/N and after they did. We purely rely on public reports to draw conclusions. Up until now 6xx seems safe with only 1 or 2 ppl reported a bootloop on Reddit. Just make a backup and keep your data on the SD card. If you get a bootloop contact LG. They seem to be aware of the issue and fixing all broken phones even out of warranty some times.
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Thanks so much for the response!!! So do you recommend I return the phone as there is a risk of boot loop and the phone is from Taiwan so they may not fix it?

rmantech said:
Thanks so much for the response!!! So do you recommend I return the phone as there is a risk of boot loop and the phone is from Taiwan so they may not fix it?
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yes theres a high chance it may bootloop.. and no UK wont repair your phone.. you must shipped to the country you got it from .. i say return. and get a phone with 6xx serial number.. there less reports with those serial numbers..
maybe @jinderation can chime in... hear hes story.

rmantech said:
Hi, just bought a second hand g4 with serial number starting 509 will the phone possibly bootloop? Also the phone is the Taiwan model and I currently live in the UK, will having the Taiwan model cause any problems? Thanks
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I had taiwan h815 yes it did bootloop eventually there are reported 509s in bootloop also if u bought it used u wont have warranty from uk only taiwan that is if u have the original receipt n the warranty card in the box n u must have a friend in taiwan too who can go to lg center n have it replaced n i tried email n phone they didnt help me ... If ur going to use it longer period like a year forget it lots of frustration

And phones with serial 508?

catsado said:
And phones with serial 508?
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supposely up until 510 were fixed.. yet ive seen 510 to one 604.

jinderation said:
I had taiwan h815 yes it did bootloop eventually there are reported 509s in bootloop also if u bought it used u wont have warranty from uk only taiwan that is if u have the original receipt n the warranty card in the box n u must have a friend in taiwan too who can go to lg center n have it replaced n i tried email n phone they didnt help me ... If ur going to use it longer period like a year forget it lots of frustration
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Click to collapse
I'm in the UK and have the same problem - a bootlooping TWN H815. It was purchased used last year, so no receipt or warranty card. I was wondering whether you had explored paying LG for an out-of-warranty repair? At this stage I'm looking at the best way of cutting my losses.

itm said:
I'm in the UK and have the same problem - a bootlooping TWN H815. It was purchased used last year, so no receipt or warranty card. I was wondering whether you had explored paying LG for an out-of-warranty repair? At this stage I'm looking at the best way of cutting my losses.
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In US cost of repairs alone is 200US$ cuz of morherboard replacement either that or which u can get a used g4 at the same price so even if ur bootloops there is no point of fixing it....all i can say for u is to wait for atleast an year after the bootloop so the prices fall down for repairs....there is no way u can send it to taiwan also there is no warranty n recepit thats only even if u have a friend there...

Avoiding heat
Hi all am in same boat. Got a EU H815 an 506 hw1.0 and until a week ago had never heard about bootloop issue. I've had unlocked bootloader, rooted with custom ROMs nearly whole ownership and as a result have never had any heat up issues. After reading 100s of pages of the issue my conclusion is that it seems to be heat that affects a soldered component which eventually fails. So based on this theory I'm using Kernel Adiutor to control the throttling when CPU temp gets >55degc. It is only an educated guess but does seem logical. Hope it helps others

Meakii said:
Hi all am in same boat. Got a EU H815 an 506 hw1.0 and until a week ago had never heard about bootloop issue. I've had unlocked bootloader, rooted with custom ROMs nearly whole ownership and as a result have never had any heat up issues. After reading 100s of pages of the issue my conclusion is that it seems to be heat that affects a soldered component which eventually fails. So based on this theory I'm using Kernel Adiutor to control the throttling when CPU temp gets >55degc. It is only an educated guess but does seem logical. Hope it helps others
Click to expand...
Click to collapse
Ive been saying its a heat issue aince day 1 and no one would listen to me.

TheMadScientist420 said:
Ive been saying its a heat issue aince day 1 and no one would listen to me.
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Click to collapse
Definitely the cause. I did always notice with stock ROMs Genisys etc my phone got hotter than CM and logically it makes sense so I'm sticking with it :fingers-crossed:

Meakii said:
Definitely the cause. I did always notice with stock ROMs Genisys etc my phone got hotter than CM and logically it makes sense so I'm sticking with it :fingers-crossed:
Click to expand...
Click to collapse
Seems like the issue calmed down over the winter in the northern hemisphere. And now that the summer is in full bloom people are looping like crazy. Im hoping between being almost as far north as one gets in usa. So like 85 far. Is blazing here. Plus me doing the thermal mod im keeping my device cool enough to make it as i have no waranty so a mb replacement costs me about 200 dollars american.
I have a s6 and a couple other mid range devices. I wont hesitate to toss my g4 in the trash. I got mine on a trade in from my g3 i only paid like 150 for my g4 so nope not me. Unless i get one cheap.
If this was an automobile this would be a recall i dont understand why these devices arent recalled.
I saw a news cast talking about how they make devices so cheap and breakable "for the economy" why would u buy the newest devices out if your old ones are running quite perfectly they say. So this is for economic reasoning. So go ahead lg keep making s****y devices i will buy a new one but not from you.
Yea i want a g5 but i wont give more that 100 bucks for it in the fear of failure.
Like i said keep it up lg seal your economic fate........

TheMadScientist420 said:
Seems like the issue calmed down over the winter in the northern hemisphere. And now that the summer is in full bloom people are looping like crazy. Im hoping between being almost as far north as one gets in usa. So like 85 far. Is blazing here. Plus me doing the thermal mod im keeping my device cool enough to make it as i have no waranty so a mb replacement costs me about 200 dollars american.
I have a s6 and a couple other mid range devices. I wont hesitate to toss my g4 in the trash. I got mine on a trade in from my g3 i only paid like 150 for my g4 so nope not me. Unless i get one cheap.
If this was an automobile this would be a recall i dont understand why these devices arent recalled.
I saw a news cast talking about how they make devices so cheap and breakable "for the economy" why would u buy the newest devices out if your old ones are running quite perfectly they say. So this is for economic reasoning. So go ahead lg keep making s****y devices i will buy a new one but not from you.
Yea i want a g5 but i wont give more that 100 bucks for it in the fear of failure.
Like i said keep it up lg seal your economic fate........
Click to expand...
Click to collapse
They are always better options than LG out there...the credibility rate for lg is always has been the worst thats why there used phones are sold dirt cheap everywhere

Hi, my G4 had bootloop recently, motherboard was changed under the warranty. New motherboard was made in 04/2018. Is it known if newer motherboards still have a bootloop issues?
I cannot found any relevant informations. Maybe because nobody already have this old phone

Standa said:
Hi, my G4 had bootloop recently, motherboard was changed under the warranty. New motherboard was made in 04/2018. Is it known if newer motherboards still have a bootloop issues?
I cannot found any relevant informations. Maybe because nobody already have this old phone
Click to expand...
Click to collapse
they are all bad as far as i know. And yes, nobody has this phone as its later revisions bootlooped after warranty and its more expensive to repair this piece of crap than what it is worth even after repairing.
I have my bootlooped G4 in a drawer since 1 year ago.

I have a phone that's never bootlooped

Prove that LG G4 never rooted.

Hi. My LG G4 has started boot looping. I presume that this is the known motherboard issue. LG offered to fix the phone under warranty. After 2 weeks the phone was returned to me with no documentation, which was a bit strange. When I tried the phone, it boot looped. I contacted LG to ask why, and they stated that my phone is rooted so they will not repair it. I have never rooted the phone, and have owned it from new. LG stated that they determined it was rooted by "scanning rooting files, which is basically security software built into the Android OS to flag if a handset has been rooted before". This is either a lie, or a mistake. Is there a way that I can check this myself so that I can prove that it isn't rooted? Thanks.

cheesebox said:
Hi. My LG G4 has started boot looping. I presume that this is the known motherboard issue. LG offered to fix the phone under warranty. After 2 weeks the phone was returned to me with no documentation, which was a bit strange. When I tried the phone, it boot looped. I contacted LG to ask why, and they stated that my phone is rooted so they will not repair it. I have never rooted the phone, and have owned it from new. LG stated that they determined it was rooted by "scanning rooting files, which is basically security software built into the Android OS to flag if a handset has been rooted before". This is either a lie, or a mistake. Is there a way that I can check this myself so that I can prove that it isn't rooted? Thanks.
Click to expand...
Click to collapse
Just a quick question: where do you live? I ask because there are different rules for repairing.

Thanks for the reply. I live in the UK. Unfortunately I have hit a brick wall with LG who have advised that if I wish to contest the alleged root, I will have to refer to Trading Standards. My phone is absolutely not rooted, unless LG rooted it. The kind of replies back from LG are as follows:
"Sadly when the handset was in our repair centre our engineers run some software to check for possible rooting of a handset, this checks for rooting files, these are security files that are on the Android OS, this also gives us a code showing the rooting cause the number for your handset was 1000002, showing that rooting files had been activated."
"unfortunately it would seem like the phone has been rooted. This may of been an application that you have downloaded however the original software is no longer on the handset."
"The error code I previously provided you means that the superuser command has been activated, this can either be activated by you or an application (the application would normally be used to remove bloat ware). "
It's very annoying considering that my phone is not rooted and the problem is irrelevant to root anyway. They have point blank refused to repair under warranty so I will now have to fight this from another direction. In the meantime, I have no phone! Needless to say, this will be my last LG purchase.

cheesebox said:
Thanks for the reply. I live in the UK. Unfortunately I have hit a brick wall with LG who have advised that if I wish to contest the alleged root, I will have to refer to Trading Standards. My phone is absolutely not rooted, unless LG rooted it. The kind of replies back from LG are as follows:
"Sadly when the handset was in our repair centre our engineers run some software to check for possible rooting of a handset, this checks for rooting files, these are security files that are on the Android OS, this also gives us a code showing the rooting cause the number for your handset was 1000002, showing that rooting files had been activated."
"unfortunately it would seem like the phone has been rooted. This may of been an application that you have downloaded however the original software is no longer on the handset."
"The error code I previously provided you means that the superuser command has been activated, this can either be activated by you or an application (the application would normally be used to remove bloat ware). "
It's very annoying considering that my phone is not rooted and the problem is irrelevant to root anyway. They have point blank refused to repair under warranty so I will now have to fight this from another direction. In the meantime, I have no phone! Needless to say, this will be my last LG purchase.
Click to expand...
Click to collapse
I just asking because of this:
http://matija.suklje.name/rooting-and-flashing-your-device-does-not-void-the-warranty-in-eu
And:
http://forum.xda-developers.com/showthread.php?t=1998801
That means even if you have rooted LG has no right to deny
repairing it because of this! Even the UK will exit from the EU they are still in and you have bought it as a European consumer.
So you should talk again with LG and especially with the UK department and explain the situation. They have to repair it even if it was rooted before and otherwise have to show a prove that the root was the reason for a damage.
.

amasing. sometimes all companies do mistakes.
too sad to say that you will never buy a lg product.
i have a similar story with nokia a few years ago with lumia 1020.
But, they changed my motherboard and also forced me to pay to get my phone back. hahahaha
don't worry. worst case scenario is to force you lose your time to format it and install the stock firmware.
I hope they provide you further assistant before all that. inform us. i'm curious to learn the end of this story.

steadfasterX said:
I just asking because of this:
http://matija.suklje.name/rooting-and-flashing-your-device-does-not-void-the-warranty-in-eu
And:
http://forum.xda-developers.com/showthread.php?t=1998801
That means even if you have rooted LG has no right to deny
repairing it because of this! Even the UK will exit from the EU they are still in and you have bought it as a European consumer.
So you should talk again with LG and especially with the UK department and explain the situation. They have to repair it even if it was rooted before and otherwise have to show a prove that the root was the reason for a damage.
.
Click to expand...
Click to collapse
Thank you for these links. Even with this information, I fear that LG UK will still insist that I go through Trading Standards. I will try one more time with LG with this new information and then take it further legally if necessary. It seems that there is no point in me arguing with LG over root, so I will try this new approach and see what they say. I am still denying root though as I genuinely have never rooted the phone!

kessaras said:
amasing. sometimes all companies do mistakes.
too sad to say that you will never buy a lg product.
i have a similar story with nokia a few years ago with lumia 1020.
But, they changed my motherboard and also forced me to pay to get my phone back. hahahaha
don't worry. worst case scenario is to force you lose your time to format it and install the stock firmware.
I hope they provide you further assistant before all that. inform us. i'm curious to learn the end of this story.
Click to expand...
Click to collapse
I agree that companies do sometimes make mistakes. It is how they deal with these mistakes that concerns me. I don't have a problem with a company that produces a phone with a widespread faulty motherboard. It's how they deal with that fault is how I judge them. Unfortunately, LG are failing miserably here. Maybe I have just been lucky, but over the last few years I have pretty much always received excellent customer service, especially on the rare occasion that I have had to return something. However, this experience with LG has taken me a bit by surprise and seems to go against the way that a lot of companies deal with customers. Anyway, I have gone from the LG G2 (I am using that now!) to the LG G4 and I presume that I will not be getting the LG G4 working any time soon so I will be looking for a new phone ..... which definitely will not be LG! I will keep you updated. Thanks for the replies!

Isn't it possible that they mixed device and result? Maybe this test they did, was on someone else's phone and later was registered as the result of your phone by mistake?

EPa said:
Isn't it possible that they mixed device and result? Maybe this test they did, was on someone else's phone and later was registered as the result of your phone by mistake?
Click to expand...
Click to collapse
Yes, this is possible and would explain the situation as it stands. I have specifically asked LG on numerous occasions for the evidence of the results of the scan that they performed on my phone, but nothing has been given to me. It is rather frustrating to say the least!

I sent my phone to LG with bootloader unlocked, ... and they repaired it without further ado. lol

kessaras said:
amasing. sometimes all companies do mistakes.
too sad to say that you will never buy a lg product.
i have a similar story with nokia a few years ago with lumia 1020.
But, they changed my motherboard and also forced me to pay to get my phone back. hahahaha
don't worry. worst case scenario is to force you lose your time to format it and install the stock firmware.
I hope they provide you further assistant before all that. inform us. i'm curious to learn the end of this story.
Click to expand...
Click to collapse
Unfortunately LG are not accepting that the phone is not rooted so I will try and format the phone back to stock in the hope that this will remove the so called root. Is this a simple process? I am currently on Marshmallow and not rooted.

cheesebox said:
Unfortunately LG are not accepting that the phone is not rooted so I will try and format the phone back to stock in the hope that this will remove the so called root. Is this a simple process? I am currently on Marshmallow and not rooted.
Click to expand...
Click to collapse
yea it will be fine afterwards. But too bad, they should fix it. Root or not root, the problem was not there. Anyway.

cheesebox said:
Hi. My LG G4 has started boot looping. I presume that this is the known motherboard issue. LG offered to fix the phone under warranty. After 2 weeks the phone was returned to me with no documentation, which was a bit strange. When I tried the phone, it boot looped. I contacted LG to ask why, and they stated that my phone is rooted so they will not repair it. I have never rooted the phone, and have owned it from new. LG stated that they determined it was rooted by "scanning rooting files, which is basically security software built into the Android OS to flag if a handset has been rooted before". This is either a lie, or a mistake. Is there a way that I can check this myself so that I can prove that it isn't rooted? Thanks.
Click to expand...
Click to collapse
My phone was rooted and they fixed it no problem.

petermg said:
My phone was rooted and they fixed it no problem.
Click to expand...
Click to collapse
I have heard similar stories. Maybe it's the luck of the draw, maybe LG are taking a different strategy as I have also heard of shortage of supply of motherboards. Who knows, but my phone wasn't even rooted!

Simple question, just ask how they know phone is rooted.
You must see they procedure, if they didnt want to show it, they just bluffing.
---------- Post added at 08:27 AM ---------- Previous post was at 08:25 AM ----------
petermg said:
My phone was rooted and they fixed it no problem.
Click to expand...
Click to collapse
In my country they fixed, although out of warranty.
---------- Post added at 08:30 AM ---------- Previous post was at 08:27 AM ----------
cheesebox said:
Unfortunately LG are not accepting that the phone is not rooted so I will try and format the phone back to stock in the hope that this will remove the so called root. Is this a simple process? I am currently on Marshmallow and not rooted.
Click to expand...
Click to collapse
Bootloop is hardware failure, you cannot format and install to stock to fix, cos they will do that if they can.
---------- Post added at 08:31 AM ---------- Previous post was at 08:30 AM ----------
cheesebox said:
Unfortunately LG are not accepting that the phone is not rooted so I will try and format the phone back to stock in the hope that this will remove the so called root. Is this a simple process? I am currently on Marshmallow and not rooted.
Click to expand...
Click to collapse
Bootloop is hardware failure, you cannot format and install to stock to fix, cos they will do that if they can.
---------- Post added at 08:33 AM ---------- Previous post was at 08:31 AM ----------
cheesebox said:
Unfortunately LG are not accepting that the phone is not rooted so I will try and format the phone back to stock in the hope that this will remove the so called root. Is this a simple process? I am currently on Marshmallow and not rooted.
Click to expand...
Click to collapse
Bootloop is hardware failure, you cannot format and install to stock to fix, cos they will do that if they can.

I'm in the UK too. When mine bootlooped it was running CM13 and a custom kernel (I can't recall which) and it was repaired without question.
That said I didn't send it to LG, it went to Carphone Warehouse who use their own repair company and then presumably claim from LG.
I don't know where you brought yours but if it was there then take it into a store.

nando_donk said:
Simple question, just ask how they know phone is rooted.
You must see they procedure, if they didnt want to show it, they just bluffing.
---------- Post added at 08:27 AM ---------- Previous post was at 08:25 AM ----------
Bootloop is hardware failure, you cannot format and install to stock to fix, cos they will do that if they can.
Click to expand...
Click to collapse
I did ask for proof and they sent a screenshot of their software they used for my phone which said "Rooting" on it. That's all they could provide.
I have now managed to install stock on the phone as it does boot up for a few minutes sometimes, before looping again.

thehappyotter said:
I'm in the UK too. When mine bootlooped it was running CM13 and a custom kernel (I can't recall which) and it was repaired without question.
That said I didn't send it to LG, it went to Carphone Warehouse who use their own repair company and then presumably claim from LG.
I don't know where you brought yours but if it was there then take it into a store.
Click to expand...
Click to collapse
Maybe I should have done this from the start. The phone was bought outright from Vodafone online on a pay as you go, but I have never used their network. Not sure if they would be happy with that!

cheesebox said:
I did ask for proof and they sent a screenshot of their software they used for my phone which said "Rooting" on it. That's all they could provide.
I have now managed to install stock on the phone as it does boot up for a few minutes sometimes, before looping again.
Click to expand...
Click to collapse
Have you verified that it is not the battery?
LG batteries are known to die after about a year..
On my old G3, I had the same issue due to a bad battery...

petermg said:
My phone was rooted and they fixed it no problem.
Click to expand...
Click to collapse
theKramer said:
Have you verified that it is not the battery?
LG batteries are known to die after about a year..
On my old G3, I had the same issue due to a bad battery...
Click to expand...
Click to collapse
Is there a way to easily check this? The phone still bootloops on full charge and whilst plugged in. I haven't tried another battery though.