Develop Bugs

Are all LG G4 with 6xx serials safe?

I don't want to risk spending $400 on a likely-to-get-bricked phone. I'd like to buy the H815 version with warranty. If I get the bootloop problem after buying the phone, is it possible to fix it with warranty?

No.

SirDarknight said:
I don't want to risk spending $400 on a likely-to-get-bricked phone. I'd like to buy the H815 version with warranty. If I get the bootloop problem after buying the phone, is it possible to fix it with warranty?
Click to expand...
Click to collapse
yes,you can fix it with warranty(unless you don't mess with the phone). So far only 603 has been reported for bootloop issue. No idea about others.

602, no problems so far..
.

I don't think any devices are 'safe'.
The problem took between 6 - 9 months to appear for most people.
There's no possible way any 602+ users can say they have been using the phone for 9+ months without this problem.

My H815 serial number start 509 release date 16 Sept 2015 still going strong. Currently running H81520D stock firmware and phone unlocked but not rooted. I have been on several other incl CM13 and no problems so far.
Sent from my iPad using Tapatalk

H815 S/N 601 have screen flickering problem.

OllieD said:
I don't think any devices are 'safe'.
The problem took between 6 - 9 months to appear for most people.
There's no possible way any 602+ users can say they have been using the phone for 9+ months without this problem.
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Click to collapse
Yeah, I agree. As far as 6xx series goes, not many people have reported but its too early to say its safe. But since this issue has been known by LG so they might fix the issue on all models which are in production. Hoping for the best since I have already ordered it!

Phoenix854 said:
Yeah, I agree. As far as 6xx series goes, not many people have reported but its too early to say its safe. But since this issue has been known by LG so they might fix the issue on all models which are in production. Hoping for the best since I have already ordered it!
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Click to collapse
Hope you get a recent model. i've had mine 2 months and its a 506.

Has LG figured out the real cause behind this problem? If some of the new phones have actually shown bootloop issues then that should mean LG failed to fix it.
Also, after fixing it from warranty, is there any possibility for the problem to occur again?
How many times will the warranty fix my phone?

SirDarknight said:
Has LG figured out the real cause behind this problem? If some of the new phones have actually shown bootloop issues then that should mean LG failed to fix it.
Also, after fixing it from warranty, is there any possibility for the problem to occur again?
How many times will the warranty fix my phone?
Click to expand...
Click to collapse
goood question, i have heard people sent their devices and cameback then it occured again.. this should have a lifetime warranty on bootloop issue only.

raptorddd said:
goood question, i have heard people sent their devices and cameback then it occured again.. this should have a lifetime warranty on bootloop issue only.
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Click to collapse
So, LG will fix it for me only once?

SirDarknight said:
So, LG will fix it for me only once?
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Click to collapse
no they said, they sent it again. i think if its unlocked bootloader it isnt covered.. i asked if phone was used would it be covered, they say yes 15 months from manufaacturing date.. am still thinking of getting one..

OllieD said:
Hope you get a recent model. i've had mine 2 months and its a 506.
Click to expand...
Click to collapse
Just received! Its 602!!!
I hope I will not end up with bootloop issue. :laugh:

hello,
are lg g4 models start with this serial MEZ660xxxxxx (1.1) BL safe from bootloop issue ??
hardware ver 1.1
date of manufacture is Sep, 19 2015
im gonna bye an international version with no warranty .... so im worry

I have 603, too early to tell if it will not bootloop.
Sent from my LG-H815 using Tapatalk

samitro said:
I have 603, too early to tell if it will not bootloop.
Sent from my LG-H815 using Tapatalk
Click to expand...
Click to collapse
what is the date of manufacture and hardware ver. ?

Safy4u said:
what is the date of manufacture and hardware ver. ?
Click to expand...
Click to collapse
ESN Date(Prod. Date): Mar 08, 2016
ESN Go Date: Mar 11, 2016
The box says 1.0 if this is the hardware version

samitro said:
I have 603, too early to tell if it will not bootloop.
Sent from my LG-H815 using Tapatalk
Click to expand...
Click to collapse
Same here. Got a 603 after I sent in my 506 for repairs. The 506 was running strong and bootlooped out of no where so that fear is still in the back of my head.

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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Click to collapse
Thanks but is the 509 model known to update?

rmantech said:
Thanks but is the 509 model known to update?
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Click to collapse
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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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Click to collapse
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
Click to expand...
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.
Click to expand...
Click to collapse
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

Bootloop fixed?

Helio guys, I'm planning to buy a aecond-handed G4, but I've seen that there's a major issue with it, a bootloop problem caused by the motherboard.
My question is, Did LG repaired that problem on some new G4 models, I saw that phones starting serial number with 505 are the ones that will fail
Thank you

hi,
if you have a phone with serial 50x, then you need a new motherboard (phone) with 6xx

Aljecama12 said:
Helio guys, I'm planning to buy a aecond-handed G4, but I've seen that there's a major issue with it, a bootloop problem caused by the motherboard.
My question is, Did LG repaired that problem on some new G4 models, I saw that phones starting serial number with 505 are the ones that will fail
Thank you
Click to expand...
Click to collapse
You have to ensure that the serial begins with 603 or higher
also ensure that you do not buy a phone with an already replaced mainboard! Means the phone should be produced in 2016
.
Sent from my LG-H815 using XDA Labs

steadfasterX said:
You have to ensure that the serial begins with 603 or higher
also ensure that you do not buy a phone with an already replaced mainboard! Means the phone should be produced in 2016
.
Click to expand...
Click to collapse
Thanks for your reply:good:
So, phones with serial starting 603 and higher doesn't have this problem?
The one I'm planning to buy is this, I asked the seller to send me a screenshot of hardware info.
After seeing it, should I ask him for a serial number photo?

steadfasterX said:
You have to ensure that the serial begins with 603 or higher
also ensure that you do not buy a phone with an already replaced mainboard! Means the phone should be produced in 2016
.
Sent from my LG-H815 using XDA Labs
Click to expand...
Click to collapse
this is very interesting! How do you know that from SN 603 there are no more bootloops? Is there a statement from LG?

Aljecama12 said:
Thanks for your reply:good:
So, phones with serial starting 603 and higher doesn't have this problem?
The one I'm planning to buy is this, I asked the seller to send me a screenshot of hardware info.
After seeing it, should I ask him for a serial number photo?
Click to expand...
Click to collapse
1. let him pull out the battery and take a pic of the serial there (this is no guarantee though because if it was in repair the sticker could be replaced as well)
2. please consider to buy a h815 international(!) or h811 because only these both can be unlocked!
PinBot01 said:
this is very interesting! How do you know that from SN 603 there are no more bootloops? Is there a statement from LG?
Click to expand...
Click to collapse
Just my personal experience and opinion. There are no guarantees or official statements anywhere.
experience means:
I own 2 h815 and both having serial 603 and both are in heavy usage because of development and they are still alive.
regarding the background of my opinion:
LG acknowledged the mainboard issue in January 2016 (http://www.androidauthority.com/lg-admits-g4-bootloop-problem-hardware-fault-669603/) and so we can assume that beginning from then it should be fixed for any newer devices then that date. 603 means March 2016 so I think that beginning from this charge it will be safe. again no guarantees nowhere.
.

PinBot01 said:
this is very interesting! How do you know that from SN 603 there are no more bootloops? Is there a statement from LG?
Click to expand...
Click to collapse
he should get a tmobile h811.
well i can vouch for that too.
after readings lots of complains you can see the pattern that most 5xx failed. and keep failing. some are lucky thoug.
LG claims that from 511 upwards its fixed . but reports are different . only a few 601 and rare 603
it doesnt mean it wont theres no way to tell but chances will be low.
am running a 601.

I saw a poll somewhere (might have been here on xda) showing bootlloop data by SN and as expected most of the bootloops were on 5xx devices. But there were a few problems even on the newer devices.
It seems logical that refurbished units in the past 6 months or so should hold up. At that point LG had determined exactly what the problem was. However, I have read threads on folks who had their G4's replaced with refurbs multiple times. I just think it is a gamble when picking up a G4 because you never know if it will last, these things are like ticking time bombs. It reminds me of the RROD Xbox 360 problem a few years ago. Best bet is to get a warranty.
My personal experience was a G4 505 purchased on release from Verizon June 2015, bootlooped October 2016. Verizon replaced with refurb and SN 506 which has been running fine, no evidence of bootlooping.

Should I buy an LG G4 Today?

Hi, I was recently thinking about changing my phone so thought of buying the LG G4. A guy near my place is selling it. I have also heard about the bootloop issue. Although the phone was working fine on his shop, should I still buy the phone? Are there any special conditions under which the phone goes into the bootloop so I can test it either using a stress test tool or playing a demanding game before buying? Please, I need some help!
Thanks,
Asbaat

ShadowFiend98 said:
Hi, I was recently thinking about changing my phone so thought of buying the LG G4. A guy near my place is selling it. I have also heard about the bootloop issue. Although the phone was working fine on his shop, should I still buy the phone? Are there any special conditions under which the phone goes into the bootloop so I can test it either using a stress test tool or playing a demanding game before buying? Please, I need some help!
Thanks,
Asbaat
Click to expand...
Click to collapse
from with serial number on back starting with 601 are less likely to bootloop the higher the number the better. lower then be cautuious.
if you dont care LG not giving nougat officialy. and poor battery. go ahead but also make sure its one of the unlockable bootloaders
search for list of lg g4 that can be nootloader unlocked.
if all okey go ahead has nice camera and unofficial beta N its nice. but official would be better.

raptorddd said:
from with serial number on back starting with 601 are less likely to bootloop the higher the number the better. lower then be cautuious.
if you dont care LG not giving nougat officialy. and poor battery. go ahead but also make sure its one of the unlockable bootloaders
search for list of lg g4 that can be nootloader unlocked.
if all okey go ahead has nice camera and unofficial beta N its nice. but official would be better.
Click to expand...
Click to collapse
Thank you for your reply, can you kindly tell why buying an unlockable bootloader device is necessary? Also, if the device is 601 and it still goes into a bootloop, will there be any solution to this except repairing the motherboard stuff?
Thanks,
Asbaat

ShadowFiend98 said:
Thank you for your reply, can you kindly tell why buying an unlockable bootloader device is necessary? Also, if the device is 601 and it still goes into a bootloop, will there be any solution to this except repairing the motherboard stuff?
Thanks,
Asbaat
Click to expand...
Click to collapse
Read the bootloop fix it list in my signature.
Buying a device which can be unlocked is absolutely necessary to fully enjoy that phone plus you can do some adjustments regarding bootloop only when unlocked.
Sent from my LG-H815 using XDA Labs

ShadowFiend98 said:
Thank you for your reply, can you kindly tell why buying an unlockable bootloader device is necessary? Also, if the device is 601 and it still goes into a bootloop, will there be any solution to this except repairing the motherboard stuff?
Thanks,
Asbaat
Click to expand...
Click to collapse
unlocked bootloader you can flash other roms stock based or aosp.
you can install kernek and tune it for performance or battery.
its unknown if it will bootloop but is less likely to happen. from 601 upwards.
also see wht my friend steadfasterX says read hes the man. he knows more then i do.

as long as it is 811 or 815...and 601 or newer serial number...its still worth to buy it

No. I haven't had bootloops on my 602 but have still had problems.
No knock on to wake. (replace screen to fix)
Micro usb port worn out and can only be replaced be re-soldering.
Random notification led blinking. (restart wifi to fix)
No updates.
Still could get a bootloop.

How to determine if phone bootloader can be unlocked? thx

Gonna buy a new motherboard the my h815! Which one?

So i finally decided to buy a new motherboard for my G4 h815 after bootloops. (It does work again after applying heat to the CPU). But not for long.
I've heard that phones with older serial numbers have this issue but not new ones. So I'm looking at a few motherboards. And since I'm not rich i was thinking of this:
https://www.ebay.com/itm/Original-Main-Motherboard-For-LG-G4-H815-32GB-Unlocked-Europe-Version/112902057618?hash=item1a497cae92:g:FB4AAOSw3ZtaJQtb
Do any of you know if it comes with the ORIGINAL cpu and not some chinese ripoff? Also can you recommend a place to buy a new motherboard for good price (and hopefully bootloop free)?
And one more thing, Which serial number should i look for? Atm my bootlooped device S/N starts with 505. Thanks.
Thanks!

i change mine motherboard like this:
505K and is bootlooping
510K and is bootlooping
607K no bootloop

neobdium said:
i change mine motherboard like this:
505K and is bootlooping
510K and is bootlooping
607K no bootloop
Click to expand...
Click to collapse
Thanks for your answer! May i ask where you got the 607k motherboard?

psrkallez06 said:
Thanks for your answer! May i ask where you got the 607k motherboard?
Click to expand...
Click to collapse
from LG service
my advice dont buy 5xx series!!! and dont play games on g4.....