Question about bootloop lg g4 - G4 Q&A, Help & Troubleshooting

Hey , I bought lg g4 about half a year ago ,so far workd OK . Two days ago my phone suddenly had a stroke and turned off and then into bootloop. Went to the store today and they told me that lg are aware of this. Told me that lg made a patch that is supposed to fix this issue so it won't happen again , but this patch may make the phone work slower. I asked the seller if after that patch , the phone will work for lets say a year -two years? He said he really doubt it will last even a half a year.
Is that true ? Does all lg g4 have this problem? Is there any fix ?
Thanks.

ROTFL
The "patch" exist but it's not coming from LG but from people here on XDA. It disables the two A57 cores so the phone can boot and it's possible to do data backup before sending phone to LG for warranty repair. It's not a stable solution, it's only a temporary one. The only real solution for bootloop is motherboard replacement and it's done by LG under warranty.
Funny guy the one of the store....
Inviato dal mio LG-H815 utilizzando Tapatalk

Is that possible to take off that patch ? Can the phone last a year or two with that patch?

Someone?

[email protected] said:
Is that possible to take off that patch ? Can the phone last a year or two with that patch?
Click to expand...
Click to collapse
i think someone reported that it lasted 4 months

I read that after disabling the two a57 cores , I can enable them again. So basically if there is another bootloop there is always a solution right? Either I disable or enable the cores. But is there any ROM or version or anything to stop the bootloop ?

Related

LG G4 (H815) variant shuts off and doesnt respond........ Need photos recovered :(

Hello guys,
I have a LG G4 H815 variant which shut off while talking on the phone. I did not install any new apps or anything new but got OTA update from LG 2-3 days before this happened.
I removed the battery and after I kept it back, and sometimes LG logo comes and then phone shuts off. Few times it also rebooted like 3-4 times by itself but did not pass the lg logo screen.
Now comes the most important thing, we recently had a baby (5days ago) and have all the photographs and videos of birth and delivery in this phone. I need that to be recovered, so please help with this first and then may be fix the phone next.
So hard reset of the phone is not an option I suppose. I also tried connecting to windows/Mac and system doesnt recognise the phone
I really appreciate any help from you guys.
sounds like you have the lg bootloop bug people have kept trying and eventually the phone has started
Sent from my LG-H815 using Tapatalk
nexy33 said:
sounds like you have the lg bootloop bug people have kept trying and eventually the phone has started
Sent from my LG-H815 using Tapatalk
Click to expand...
Click to collapse
I have been trying for past 3days removing the battery and charging for whole day, nothing helped till now
Ermm, with the bootloop issue only one thing helped so far... Send it back to repair (I did it as well)
davebugyi said:
Ermm, with the bootloop issue only one thing helped so far... Send it back to repair (I did it as well)
Click to expand...
Click to collapse
So do you mean to send it to UK..... I called US LG support, they said to contact UK support.... they said, they can only send packages to Uk to send the phone for repairs. What about the data on phone? I need the very important photos of my newborn.
try the freezer method
http://forum.xda-developers.com/showpost.php?p=64905142&postcount=1
akusbharat said:
So do you mean to send it to UK..... I called US LG support, they said to contact UK support.... they said, they can only send packages to Uk to send the phone for repairs. What about the data on phone? I need the very important photos of my newborn.
Click to expand...
Click to collapse
I brought the phone back to the shop where I bought it, as I had a 2 year warranty with them. They sent it to one of their repair centers and in 8 days it was fixed for free.
I suggest to try the freezer method posted above and hopefully it will boot and you can manage to get your photos off the phone.
In case it won't boot all or just sits on the LG logo, then it is hard to recover as (probably) they have to replace the whole motherboard (like in my case) and it is unlikely they will bother with recovering data. However you may ask them very nicely, but they might just ignore it.

DEAD

Once upon a time,about 8 months ago,there was the little newbie me,I that old E975(lgg) and decided he should get a new phone with all those "G4's" "S6's" etc,I wanted a phone with killer specs,and the best camera out there,so I decided to go with the g4,looked up prices online on his country. Pretty damn high,so i found that one shop that sold it for like 100$ less,no official warranty,unofficial warranty for 1 year,that seems fair,I bought it,the biggest mistake i ever made, the phone was so good,it worked like a charm,and god damn that camera was awesome,about 4 months ago i was sending a whatsapp when it just got stuck on that screen,m'kay i tried restarting,won't work,removed the battery and inserted an other one,boot to lg logo and then shut down,alright, i still got warranty. time to use it,went to the store,they said "we can't fix it",worst customer support EVER,ever since that I've been using that ****ty replacement phone,ewo,so today i was really bored and decided to look up the problem and noticed my s/n begins with "505" looked it up,apparently all the g4's with that s/n got stuck eventually,and the store knows that and since my warranty is unofficial I can't do ****,or can I? is there any way to get out of this with a functioning phone?help?
Temp Fix
Mine died yesterday. It's a hardware fault apparently and can't be fixed. You can, however, disable big cores and recover your data, but your phone will be really slow.
Here's the link:
http://forum.xda-developers.com/showpost.php?p=65919400&postcount=707
whattt
i was just about to cook the phone and teared it apart,i saw the whole oven thing and i thought to myself "Why the hell not" and well it should work...if it will stay the same i'll use your tutorial and probably use the really slow G4 instead of my current 2012 Huawei
stardamore said:
Mine died yesterday. It's a hardware fault apparently and can't be fixed. You can, however, disable big cores and recover your data, but your phone will be really slow.
Here's the link:
http://forum.xda-developers.com/showpost.php?p=65919400&postcount=707
Click to expand...
Click to collapse
Phone doesn't work really slow, if you know what to do. My phone is working since I disabled the big cores what is about 2 weeks now, I'm even on a custom ROM. All you need to do is to root it and using 'Device Control Manager' (Kernel Adiutor doesn't work for me) change the frequency what will enable all 4 cores and with 4 there is no big difference in the performance really. I feel like it's more Qualcomms fail than LG's, cuz look G4 was first phone with Snapdragon 808 wasn't it? What if the first processors they made they sent to LG as they are all now in s/n's 505-509 and what if these are faulty? It actually would make sense, with 6 cores my phone didn't even turn on, with 4 it works as normal, it means there is 'something' wrong with the two faster cores..
It's LG's fault. They have admitted such. It's a faulty connection/motherboard.
UPDATE
i've baked the phone,it works for now,how can i make sure that it'll keep working?
Replace the motherboard.
but they don't sell them on my country,and it'll cost like 400$ with shipping,and nobody replaces mobo's here,so is there any way to make this one keep working?
idan445 said:
sold it for like 100$ less,no official warranty,unofficial warranty for 1 year
Click to expand...
Click to collapse
I'm sorry, but unfortunately you dug your own grave with that one. You may have saved yourself $100, but caused yourself major issues in the long run sacrificing that warranty.
Honestly, there is apparently no way to ensure it'll keep working. A lot of users have reported their phone dying again after LG has fixed it. A motherboard replacement is the second best option with the first being a phone other than the G4.

Bootloop on brand new G4... what's your advice... send it back or fix it?

Hi,
Sorry for the mistakes, i'm french
I bought and received a brand new G4 (serial N°603XXX)
The very first day of using it i had a bootloop
I really think that a G4 is perfect for me now and i hesitate on what to do:
Should i send it back to the seller (he agrees to refund me 100%) to buy a new one or should i fix it?
the cons and pros:
If I send it back, i take the chance to receive a new one that will maybe do a bootloop after a few month or years while i'll have many data on it BUT, I may have a new phone that will work immediatly.
If i fix it, i'll have to send it to LG (actually, a professionnal tried to fix it through software and didn't manage to do it.... he told me that it's certainly a hardware problem)... for 2 weeks maybe and i'll have back a phone that will work but that would have already been "opened"... it's a shame for a new phone.
My opinion:
it's better to have a phone that is fixed than a new phone that will maybe die later.
Can i think that if it is fixed ,it will NEVER do a bootloop again?
What's your opinion, please?
Thanks
Mathieu:laugh:
It can't necessarily be fixed, it can only be replaced.
I had my G4 for exactly 11 months (June 2015 release date through last week) before I ended up with the bootloop problem. I got it replaced under factory warranty, but it is a manufacture's defect.
If I were you, I'd just get the G5.
to buy a new "flagship" is not an option.
i hesitate between fixing it or changing it for a new one
if they "fix" it... what do they do? they change the motherboard?
if the phone is "fixed"... am i right to think that it won't have any bootloop problem?
thanks
What is it about the G4 that makes it perfect for you? What about the V10?
Snakecharmed said:
What is it about the G4 that makes it perfect for you? What about the V10?
Click to expand...
Click to collapse
V10 is to big (and not on sale in France )
with my budget and all my needs, the G4 is the phone i need (compared to all the other phone with the same price)
so... what do you think about my strategie...? is it good or am i wrong?
matt06 said:
V10 is to big (and not on sale in France )
with my budget and all my needs, the G4 is the phone i need (compared to all the other phone with the same price)
so... what do you think about my strategie...? is it good or am i wrong?
Click to expand...
Click to collapse
I say exchange it for a new G4. It's not 100% certain that all G4 phones will have bootloop issues, but it is 100% certain that the one you have right now does.
The problem is that all LG is doing is replacing motherboards, but even new motherboards may have issues, as you've witnessed. So what does a "fixed" phone really mean? They're not doing any fine soldering work to actually repair the problem. If they were, I'm sure someone would have noticed that by now and there would be DIY threads on how to fix it yourself.
I would just make it a habit to regularly make backups of your phone and be prepared in case the new G4 fails in the future.
I was one of the biggest G4 fans when it first came out since it's also everything I wanted in a phone other than the 808, but throughout the course of this week, I decided that I was over it. If I'm lucky, my replacement G4 lasts long enough for other better options to come on the market at the right price, new or used.
OK. Thank you for your answer. I thought that they would install a motherboard that DOESN'T HAVE this bootloop problem but if they do as you say (install a motherboard that may also have the problem.... There are no reason to do that)
And wich phone do you think about?
Envoyé de mon LG-D802 en utilisant Tapatalk
Mathieu_L said:
OK. Thank you for your answer. I thought that they would install a motherboard that DOESN'T HAVE this bootloop problem but if they do as you say (install a motherboard that may also have the problem.... There are no reason to do that)
And wich phone do you think about?
Envoyé de mon LG-D802 en utilisant Tapatalk
Click to expand...
Click to collapse
You're welcome. If LG could guarantee that you would receive a motherboard that won't ever bootloop, then it would be worth repairing the G4 you have now, but if your current G4 was built in March 2016 (serial 603, after the problem was allegedly fixed) and it still bootloops, then I don't have much confidence that LG completely figured out the problem.
If I were to replace my G4, I like the LG V10 if there is a reliable root method released for the T-Mobile US version. Otherwise, I would consider the Samsung Galaxy S7 edge only after a very big discount, so that would have to wait at least a year. I like that LG still believes in removable batteries and obviously their camera hardware and software is excellent, but they need to improve the quality and reliability of their phones. Also, the G5 is a poorly implemented concept that I really don't like, so the V10 successor needs to get everything right for LG to prove they have any idea of what they're doing anymore.
So you're telling me that all the LG G4 even the new one can have this problem and that if they try to fix it, they may install a motherboard that CAN have this problem. It's crazy.
I love this phone but I don't want a phone that can break at anytime
...! ?
Envoyé de mon LG-D802 en utilisant Tapatalk
matt06 said:
So you're telling me that all the LG G4 even the new one can have this problem and that if they try to fix it, they may install a motherboard that CAN have this problem. It's crazy.
I love this phone but I don't want a phone that can break at anytime
...!
Click to expand...
Click to collapse
It's not likely, but it's possible. Recently, some users, including you, have reported that phones with serial numbers starting with 603 and 604 have gotten bootloops as well. With the original 505 phones, these issues started happening with great frequency after half a year, so we could have to wait until later this year to find out whether or not the newly manufactured G4 phones will also start showing the same symptoms with high frequency.
I wouldn't recommend the G4 anymore either, so that's why I asked earlier what do you like about it, because you might be better off finding those features in another phone. I'm just enjoying my replacement G4 while I have it, but I no longer think it's going to be something I can keep forever, like a couple of Motorola dumbphones I still have from 2006 and 2009.

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

Screen ghosting LG G4

Hey guys,
Yesterday I noticed some screen ghosting on my LG g4 on the top right where the battery icon, signal status etc are. I turned it off for 6 hours and noticed it got slightly better then i used an app which stimulates all the pixels on the screen for about 8 hours by flashing different colours. After this all ghosting went away but after i used my phone for about 2 minutes it made a new ghost. Please help me fix this permanently. I am currently using the same app with the intention of keeping it on for a full day.
It can't be fixed. However you could replace screen.
krater1212 said:
It can't be fixed. However you could replace screen.
Click to expand...
Click to collapse
Are you sure that there is no other way? I don't want to send it for repair and am hoping that there is another solution.
bozy09 said:
Are you sure that there is no other way? I don't want to send it for repair and am hoping that there is another solution.
Click to expand...
Click to collapse
No other solution mate.
You got to learn to live with it or to swap the screen.
I got it too. Doesn't bother me anymore.
I will upgrade after couple months but god knows i would not buy LG.....
chaki- said:
No other solution mate.
You got to learn to live with it or to swap the screen.
I got it too. Doesn't bother me anymore.
I will upgrade after couple months but god knows i would not buy LG.....
Click to expand...
Click to collapse
Honestly LG has given me the worst android experience to date. Had the damn phone for 3 months an it was the taiwanese g4 which has no way to unlock its bootloader. The worst part is that the screen ghosting came up on the same day i decided to sell it and buy a oneplus 3 instead. Now i wont be able to sell it for a good price and that means i can't afford the oneplus. Never buying from LG again.
bozy09 said:
Honestly LG has given me the worst android experience to date. Had the damn phone for 3 months an it was the taiwanese g4 which has no way to unlock its bootloader. The worst part is that the screen ghosting came up on the same day i decided to sell it and buy a oneplus 3 instead. Now i wont be able to sell it for a good price and that means i can't afford the oneplus. Never buying from LG again.
Click to expand...
Click to collapse
I understand exactly what you mean.
i have it also and it's ANNOYING as hell!!! I returned mine 2 weeks ago not only because of this but also because i cannot see nor connect to a 5 GHz Wi-Fi network.
Just 2 months prior top this the phone killed itself (not even 1 year old) and had to get a new PCB. LG if you are reading this, i want my money back.
Note to the people, please don't buy LG crap!
LG G4 bootloop
The bootloop - problem on all the LG phones from the main series is caused due to a less safety check in fabric and causes cause the processor releases from the mainboard during heat, mechanical load etc and the connections were broken! To fix, the processor have to pushed back on the mainboard with heat - I think a hair dryer is a good way to do that
If there are any other problems with the CPU itself - I don't know but sometimes the processor itself can be partially damaged
I've even a G4 which has stoped working on June.04.'17 and I'll try to apply this step in a professional environment. (you've to fully open it, put a hair dryer on the processor, heat the processor and push it down on the mainboard) The best video on yt to do that: search for "LG G4 BOOTLOOP FIX REPAIR VIDEO"
>>By holding the vol+ -key and plug in the USB-cable it bootet once... ..and works... ..but then heats up! - That might work for quick saving data on the PC!<<
I hope that could help!
contact (lang. EN/DE):
Telegram: @NA0341
mail: [email protected] (subject: G4 bootloop)
Best wishes
NA0341

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