Develop Bugs

Marshmallow update caused bootloop

Hi all,
Just got news of the marshmallow being available to my LG G4 (H815). I was aware of the update having been rolled out to Poland and Korea before so I thought it was a safe bet.
I plugged in my phone, started the LG Bridge software which prompted me with the update. I went on and downloaded it, which happened without any issues.
However, when the process was over and my phone restarted, it went through the usual "app optimization" window and after that started boot-looping. I have the initial audio cue from LG playing every few minutes, with the same "app optimization" for 12 apps (when the first time it was around 90).
I initially left it for a while (5-10min) before i started losing patience. I removed the battery but that didn't change anything.
I initiated the Recovery mode, but it prompted me with a "factory reset" question, which I didn't feel like doing before having tried anything else.
My phone is not rooted and was running Android 5.1, the LG variant. I never fiddled with this phone.
Has anyone else experienced issues updating? Do you have any suggestions on what I can do to recover my data? Because for me, that's mostly what I'm concerned of.
Thanks!
Edit: In addition, I'm facing a new problem... while boot-looping, my phone is actually draining more energy from the battery than my charger can provide (yet, it's a 1,8A @ 5V).
It's now down to 10%, which I've been able to verify by removing the battery thus shutting down the phone, putting the battery back inside, and plugging the phone in while being off. However, this automatically turns on the phone, so it briefly displays the battery charging animation before booting... My phone was at 100% during the Marshmallow update.

Which S/N (serial number on your box) do you have? 505 and 506 are known for this issues..

appileh said:
Which S/N (serial number on your box) do you have? 505 and 506 are known for this issues..
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Click to collapse
Wow, wasn't aware of that... it turns out it's a 505...

Wh!teSh4dow said:
Wow, wasn't aware of that... it turns out it's a 505...
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Click to collapse
yes it can be a issue of the 505.. Not to scare you or anybody else (there are people here that are crying and closing threads because i talk things like this.) But 505 is a known issue that some of the motherboards have defects. I hope you can fix it for yourself or call the cheap manufacturer LG..

appileh said:
yes it can be a issue of the 505.. Not to scare you or anybody else (there are people here that are crying and closing threads because i talk things like this.) But 505 is a known issue that some of the motherboards have defects. I hope you can fix it for yourself or call the cheap manufacturer LG..
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Are you aware of this being a reason for replacement units to be issued? I didn't buy it through LG directly but through amazon, so I'll get in touch with them, but just wanted to know if you've had any experience or know of anything regarding this. And thanks for letting me know.

Wh!teSh4dow said:
Are you aware of this being a reason for replacement units to be issued? I didn't buy it through LG directly but through amazon, so I'll get in touch with them, but just wanted to know if you've had any experience or know of anything regarding this. And thanks for letting me know.
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Np chief. They will fix your phone, just say it is in a bootloop after LG's official update. Call Amazon or LG itself to fixe this problem. (you mentioned you didnt root anything etc so you are good to go boss).

appileh said:
Np chief. They will fix your phone, just say it is in a bootloop after LG's official update. Call Amazon or LG itself to fixe this problem. (you mentioned you didnt root anything etc so you are good to go boss).
Click to expand...
Click to collapse
I figured, they would just try to restore my device and send it back to me, so I tried it and it worked. I'm still disapointed for two reasons:
- I still lost valuable data which I can't retrieve any more
- I'm still stuck with my device which could very well be prone to other issues in the future (any future update ?)

There are issues with this phone because i had 3 Rma's because of motherboard and dead pixels. My wife has also dead pixel and has version 506. Just use your phone, Marshmallow update is out so maybe they changed something in the system to stabilize the motherboard.
Verstuurd vanaf mijn LG-D855 met Tapatalk

Help wifi wont turn on. Stuck on Turning Wifi On

Phone randomly reset and just keeps saying turning on wifi. I dont know what to do please help

Jasonfares said:
Phone randomly reset and just keeps saying turning on wifi. I dont know what to do please help
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Click to collapse
More information is needed
(1) What phone do you have (model number)
(2) What rom do you have
(3) Was there anything you did just before it happened
(4) Have you tried anything to fix it.

tallman43 said:
More information is needed
(1) What phone do you have (model number)
(2) What rom do you have
(3) Was there anything you did just before it happened
(4) Have you tried anything to fix it.
Click to expand...
Click to collapse
I have att d850
Im on stock but have adblock from root
I literally opened spotify and then phone crashed then restarted and wifi wont turn on.
Ive restarted multiple times. Ive turned airplane mode on. Idk what more to do

Jasonfares said:
I have att d850
Im on stock but have adblock from root
I literally opened spotify and then phone crashed then restarted and wifi wont turn on.
Ive restarted multiple times. Ive turned airplane mode on. Idk what more to do
Click to expand...
Click to collapse
Personally I would first delete spotify then reboot see if it fixes it,I personally don't think its the app spotify but worth a try. I would then also backup my data and try a factory reset. If that also does not work consider re flashing a new stock rom.

tallman43 said:
Personally I would first delete spotify then reboot see if it fixes it,I personally don't think its the app spotify but worth a try. I would then also backup my data and try a factory reset. If that also does not work consider re flashing a new stock rom.
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Click to collapse
I backed up some things and im factory reseting right now. What would be a good rom to flash? A while ago this phone was soft bricked and I flashed kitkat and reupgraded to lolipop and this just happened.

Jasonfares said:
I backed up some things and im factory reseting right now. What would be a good rom to flash? A while ago this phone was soft bricked and I flashed kitkat and reupgraded to lolipop and this just happened.
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To be honest I can't recommend any because I have a LG 855 sorry.

tallman43 said:
To be honest I can't recommend any because I have a LG 855 sorry.
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**** well I factory reset and its still doing it. I think im just going to go to att tommorow and see whats up

Jasonfares said:
**** well I factory reset and its still doing it. I think im just going to go to att tommorow and see whats up
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Don't forget if you take it to service to unroot your phone.

tallman43 said:
Don't forget if you take it to service to unroot your phone.
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Click to collapse
wait do what with it? I factory reset it does that not take out the root?

Jasonfares said:
wait do what with it? I factory reset it does that not take out the root?
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Click to collapse
Nope it may remove the app but not root and service will be able to tell if it's rooted..Best way is to flash a stock kdz to get rid of any traces of it.

tallman43 said:
Nope it may remove the app but not root and service will be able to tell if it's rooted..Best way is to flash a stock kdz to get rid of any traces of it.
Click to expand...
Click to collapse
Could you give me a way how with wifi not on the phone?

Jasonfares said:
Could you give me a way how with wifi not on the phone?
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Click to collapse
Sorry I don't understand your question? do you mean how to flash a stock kdz if so look here >> http://forum.xda-developers.com/showthread.php?t=2785089 <<

Hi, sorry to hijack the thread but my LG G3 d855 is exactly the same. on 29th December i noticed that the wifi wasn't connected to my home network, so did a reboot and still the same. I spent an hour or 2 googling this to find i wasn't the only one. Most had suggested a factory data reset, however said that this doesn't always work. I tried that and still the same so rang my network provider who passed me through to LG UK. It was booked in for a repair and collected on the 5th Jan. I got the phone back on the 26th Jan, and it took me less than 10 minutes to get the same wifi not connecting issue again. On the repair note it states they have changed the ic/pa/filter and updated the software to v20l (although I'm sure i was on later than that anyway). I rang LG again and it was collected the next day. I received the handset on tuesday, and the note this time said software updated, phone tested. I put the battery in, turned the phone on and within a minute found that the wifi would not turn on at all. I also noticed that the build version was V20h, which is a downgrade from the version that was on the phone when i sent it back to them.
I have rang LG again, and was told that they would look at it, but that i might need a new phone. When i questioned the new phone statement and asked why i needed to buyt a new phone, the woman didnt answer me. Anyway, the phone is getting collected today, and i really dont hold out much hope that it will be repaired. I have mailed LG direct to complain about this but i am at the point where i might move away altogether from LG. I am stuck until June waiting for my contract to expire, but am so frustrated with LG and their repair service as they have had my phone over a month now and havent fixed it.

This phone (g3) have bad quality components....my last lg....back to Samsung....I want my S5 again or a new S7 or note 4. Fantastics super amoled displays, great conections, all works. I'm tired of suffering...kkk

labpedro said:
Hi, sorry to hijack the thread but my LG G3 d855 is exactly the same. on 29th December i noticed that the wifi wasn't connected to my home network, so did a reboot and still the same. I spent an hour or 2 googling this to find i wasn't the only one. Most had suggested a factory data reset, however said that this doesn't always work. I tried that and still the same so rang my network provider who passed me through to LG UK. It was booked in for a repair and collected on the 5th Jan. I got the phone back on the 26th Jan, and it took me less than 10 minutes to get the same wifi not connecting issue again. On the repair note it states they have changed the ic/pa/filter and updated the software to v20l (although I'm sure i was on later than that anyway). I rang LG again and it was collected the next day. I received the handset on tuesday, and the note this time said software updated, phone tested. I put the battery in, turned the phone on and within a minute found that the wifi would not turn on at all. I also noticed that the build version was V20h, which is a downgrade from the version that was on the phone when i sent it back to them.
I have rang LG again, and was told that they would look at it, but that i might need a new phone. When i questioned the new phone statement and asked why i needed to buyt a new phone, the woman didnt answer me. Anyway, the phone is getting collected today, and i really dont hold out much hope that it will be repaired. I have mailed LG direct to complain about this but i am at the point where i might move away altogether from LG. I am stuck until June waiting for my contract to expire, but am so frustrated with LG and their repair service as they have had my phone over a month now and havent fixed it.
Click to expand...
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Yea Ive been a month without WiFi on it and I've taken it to 2 phone repair shops and its been said to be a motherboard problem and lg would have a big fee to fix it. I'm going to get a new phone soon because this problem is happening a lot right now with lgs

Jasonfares said:
Yea Ive been a month without WiFi on it and I've taken it to 2 phone repair shops and its been said to be a motherboard problem and lg would have a big fee to fix it. I'm going to get a new phone soon because this problem is happening a lot right now with lgs
Click to expand...
Click to collapse
Well, update so far is they have "repaired" the handset and its on its way back to me so will get it on monday. I was going to bet a guy at work that it wouldnt be repaired but he wouldnt take the bet. if its still not fixed i think i need to go down the replacement route. I have tried to be polite about this, but the fact that they have ignored 3 emails from me trying to raise a complaint, numerous tweets and facebook messages is making me feel like LG are not a company that can be trusted. I realise that I am a tiny insignificant stone on the bottom of their shoe and am meaningless in the grand scheme of things, but i've never dealt with a company that simply ignores you....
I will update on monday when i turn the phone on

So as a follow up, I got the phone back on Monday and so far it is working fine, WiFi is connecting with no problems. The fix that has been reported is replacing the mainboard. 1 niggle now though is that there is now a hiss in the headphones that comes and goes which wasn't there when i sent the phone in for the million repair attempts. I cant be bothered to go through the hassle of reporting it and sending it off for repair so I'm just going to live with it (its not too bad, just annoying when the music is quiet or paused). I only have a couple of months before I can upgrade, and had thought about a G4 or G5 but after the past 2 months i don't think i'll bother.
Ray

labpedro said:
So as a follow up, I got the phone back on Monday and so far it is working fine, WiFi is connecting with no problems. The fix that has been reported is replacing the mainboard. 1 niggle now though is that there is now a hiss in the headphones that comes and goes which wasn't there when i sent the phone in for the million repair attempts. I cant be bothered to go through the hassle of reporting it and sending it off for repair so I'm just going to live with it (its not too bad, just annoying when the music is quiet or paused). I only have a couple of months before I can upgrade, and had thought about a G4 or G5 but after the past 2 months i don't think i'll bother.
Ray
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Click to collapse
How much did you pay for LG to repair it?

Jasonfares said:
How much did you pay for LG to repair it?
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Click to collapse
so sorry for late reply, didnt know you had asked a question. Mine was done under warranty (apparently LG have a 2 year warranty with Three) so mine was fixed under that. I would guess that it would of been about 100 quid though for the work that they did, if not more. It took them far too many attempts to fix it though, which has left me with a bitter taste towards LG, so not sure whether to get the G5 next, the G4 or move onto a different make altogether

labpedro said:
so sorry for late reply, didnt know you had asked a question. Mine was done under warranty (apparently LG have a 2 year warranty with Three) so mine was fixed under that. I would guess that it would of been about 100 quid though for the work that they did, if not more. It took them far too many attempts to fix it though, which has left me with a bitter taste towards LG, so not sure whether to get the G5 next, the G4 or move onto a different make altogether
Click to expand...
Click to collapse
I actually havent got it repaired and im still using it. I called lg and they told me there was a one year warranty on the g3 so im just keeping it until i decide on a new phone to get

Phone won't pass the LG screen

my phone is rooted i'm on 13B everything was fine since i got my phone back in august till today i was listening music and was gonna skip to next song that moment is when my phone froze completely after pressing the power button the phone reboot by itself but got stuck on the lg screen i removed the battery after a few attempts it turned on. after 30 minutes or so it rebooted it self again but now even removing the battery it won't pass the lg screen. any ideas? suggestions?

probably the same problem a lot of other people are having. I also had the same symptoms as you, on rooted 13B.
you can try resetting or reflashing your phone but most likely you need a replacement.

theirs a problem with the motherboard going bad, i just had the same problem and lg sent me a replacement under warranty but i wasnt rooted

dagnisaun said:
probably the same problem a lot of other people are having. I also had the same symptoms as you, on rooted 13B.
you can try resetting or reflashing your phone but most likely you need a replacement.
Click to expand...
Click to collapse
bayniner said:
theirs a problem with the motherboard going bad, i just had the same problem and lg sent me a replacement under warranty but i wasnt rooted
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Click to collapse
Update!
i called verizon they sending me a replacement. just to let you know i flashed 13B KDZ but the bootloop was still there i let my phone on and finally turned on quickly i did a factory reset and booted up normal and its working again. still im gonna send it back. just sharing my experience maybe for other people might work too.

killa408shark said:
Update!
i called verizon they sending me a replacement. just to let you know i flashed 13B KDZ but the bootloop was still there i let my phone on and finally turned on quickly i did a factory reset and booted up normal and its working again. still im gonna send it back. just sharing my experience maybe for other people might work too.
Click to expand...
Click to collapse
How were you able to flash 13B if it was stuck in a bootloop, ive already recieved my replacement but id like to factory reset my old one before i send it back

bayniner said:
How were you able to flash 13B if it was stuck in a bootloop, ive already recieved my replacement but id like to factory reset my old one before i send it back
Click to expand...
Click to collapse
I put the phone in download mode and flashed 13B KDZ. But unfortunately my phone got back in the bootlop. Good thing I'm gettingmy replacement

It's a hardware issue, not software. A lot of the earlier G4s have "loose contacts" that cause the bootloop to occur. LG has acknolwedged it and are replacing any affected phones without incident. Just call verizon and they'll ship a new one.

Yup, happened to me just his week. VZW shipped another one to arrive the next day. FWIW, I strongly recommend everyone backup their phone to removable SD card using LG's on board Backup utility. If this challenge happens to you, getting back up and running quickly will be much easier if you have this backup ready to go.
...my $.02.

Happened to me as well last night. Took it back to Verizon today and they are sending me another one. I didn't have insurance and no questions were asked. Obviously they recognize the problem. Last LG phone I will own! Unless the G5 is insane. Hehe

Happened to me as well, yesterday. Interesting how this is happening to everyone at almost the same timeframe. I'll take it to Verizon to get a replacement shipped.

I had the same problem, and contacted LG support and they said it will take 9 business days to repair the phone. This seemed like an awful long time to be without a phone, I asked if there was any way to speed the process up and they said no. Thankfully I was able to borrow a phone from work for the duration of the repairs. Considering how this is a major problem with many handsets, I think LG is handling the whole situation pretty badly.

LG G4 NOT stuck in bootloop but not booting past LG logo [goes off]

Hi all, ok tonight/this morning at work while on my break i went to do my usual thing of having food and watching a tv show via cartoon hd about 2mins in and my phone switched off.....now i thought it was dead so plugged in the charger but no led light, or screen on to say its charging.....i did a bit of googling and find out about the bootloop thingy buuuuut mines not looping, its swtiching on to the LG logo [i did the bootloader unlocker thingy etc so it says tha in the top corner] then it goes off.......i also get pulsing blue led lights too.....if i press, hold the power button after i get nothing, i have to take the battery out and then its rinse and repeat

Hi,
Same thing happened to me today. I was taking a shot and it switched off and same scenario.It seems that we had encountered an bootloader brick in which our device enters in some special bootloader mode in which when you connect it to the computer in the device manager it shows up as Qhsusb_bulk. I read the whole internet and there is a similar brick with G3 the guys were able to fix it. Even there is a tutorial on how to do this which I think is applicable to our device. I was able to install the required drivers and etc. but there is one big problem - I followed the guide and came into one serious problem - we need a special mbn file so we can recover our device and the sad thing is nobody on the internet doesn't have it still. There are many people like us who got selfbricked G4 and cannot fix it without this file. Please if somebody can help us please share the file so we can fix our devices. THANK YOU !
Link to the g3 unbrick guide

ive seen lots about the bootloop issue, but the thing is mine isnt doing a loop [i have to take the battery out/ pop it it back in, to switch it on then after 10-20 seconds on the LOGO it turns off

thewhisper said:
Hi,
Same thing happened to me today. I was taking a shot and it switched off and same scenario.It seems that we had encountered an bootloader brick in which our device enters in some special bootloader mode in which when you connect it to the computer in the device manager it shows up as Qhsusb_bulk. I read the whole internet and there is a similar brick with G3 the guys were able to fix it. Even there is a tutorial on how to do this which I think is applicable to our device. I was able to install the required drivers and etc. but there is one big problem - I followed the guide and came into one serious problem - we need a special mbn file so we can recover our device and the sad thing is nobody on the internet doesn't have it still. There are many people like us who got selfbricked G4 and cannot fix it without this file. Please if somebody can help us please share the file so we can fix our devices. THANK YOU !
Link to the g3 unbrick guide
Click to expand...
Click to collapse
on G2 you get security boot error phone is detected as QHUSb_BULK. on G2 the fix was to enter download mode. in G2 vol up then plug usb.
using TOT method and flash tools . flash stock firmware fixed my soft brick.
not sure about the file you mention, maybe you do need it..

jamious-daywalker said:
now i thought it was dead so plugged in the charger but no led light, or screen on to say its charging.....i did a bit of googling and find out about the bootloop thingy buuuuut mines not looping, its swtiching on to the LG logo [i did the bootloader unlocker thingy etc so it says tha in the top corner] then it goes off.......i also get pulsing blue led lights too.....if i press, hold the power button after i get nothing, i have to take the battery out and then its rinse and repeat
Click to expand...
Click to collapse
I have the issue. I don't do anything special but my phone reboot and stuck on lg logo. But now my phone doesn't want to boot. Sometimes he detect when I'm trying to charge it but often not. Yesterday I boot on download mode and recovery but today it's impossible... I think I have some hardware issue ? Or software with the bootloader...
I don't know how to fix that without access to download/recovery mode :crying:

Same here. Sometimes it boots into recovery/download but most of the times it doesn't. It's a hardware problem I think as LG officially confirmed that there were problems during the building proccess of the first G4 series. I don't want to sound bad but soon or later all phones built before october last year will get into bootloop. I was hoping it won't happen to me - I'm very light user with only light standart apps with no games and other heavy stuff, so the problem wasn't caused by overheating by heavy multitasking. Anyway it happened and I'm pretty sure it's harware related but if somebody can provide the tot and mbn files I will be more than happy to try the g2/g3 unbrick method. The main problem is that these files are not available for h815. I found on other forum tot files for other variants than h815 So if somebody have the tot filesfor h815 please share so we can try to unbrick our G4. Thanks!

same thing heppened to my g4 this week. i called lg last night and they agreed to repair it. i'd just gave them a call.

I sent mine for repair today. I hope they will agree to repare it even that it's with unlocked bootloader and with rooted custom rom !!! What you think ? Will I have problems with them because of that ?

Happened with my phone as well. It was rooted so i was hella scared if they didn't accept my phone. But soon they told me phone's motherboard has gone bad and will be replaced. Got my phone with a brand new motherboard after a couple of hours.
P.s. all your data will be gone
Sent from my LG-H818 using XDA-Developers mobile app

clotveins said:
Happened with my phone as well. It was rooted so i was hella scared if they didn't accept my phone. But soon they told me phone's motherboard has gone bad and will be replaced. Got my phone with a brand new motherboard after a couple of hours.
P.s. all your data will be gone
Sent from my LG-H818 using XDA-Developers mobile app
Click to expand...
Click to collapse
So the same problem just happened to my lg H815 with unlocked bootloader, am really f***ed without my phone, gonna call LG UK tomorrow, anything in particular I should say? also looking for solutions I saw many people are starting to have this issue now too - any official comments from LG?
P.S. if you have an LG G4 you should start backing up all your data now

This literally just happened in the last 15 minutes to me as well. Random reboot right after I woke up the phone and now stuck on the LG splash screen. Light user here, never did anything with the phone that would have heavily stressed it physically or computing-wise, so I also concur it's an inevitability for earlier runs of G4 phones.
Luckily, I backed up everything through TWRP last Thursday by chance because I was updating Xposed to the latest version and swapping to a faster 128GB microSDXC. At worst, I might have lost a handful of unimportant text messages.
Not worth the time to try to figure out any cheap fixes myself, I just got done submitting a repair request to LG.

I ordered LG G4 H815 and I hope to not see any kind of these issues

irishlad99 said:
So the same problem just happened to my lg H815 with unlocked bootloader, am really f***ed without my phone, gonna call LG UK tomorrow, anything in particular I should say? also looking for solutions I saw many people are starting to have this issue now too - any official comments from LG?
P.S. if you have an LG G4 you should start backing up all your data now
Click to expand...
Click to collapse
Guy at service center said its internally communicated all LG G4's motherboard will have to be changed at least once.
And just say you dont know what happened exactly. Slept and in the morning my phone won't work

clotveins said:
Guy at service center said its internally communicated all LG G4's motherboard will have to be changed at least once.
And just say you dont know what happened exactly. Slept and in the morning my phone won't work
Click to expand...
Click to collapse
at least once?? many had sent phone , then again having bootloop after repair..???

raptorddd said:
at least once?? many had sent phone , then again having bootloop after repair..???
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Click to collapse
I have got my phone repaired for like 4-5 times. 3 times motherboard change, 1 time display change and 1 time volume button pannel change.

clotveins said:
I have got my phone repaired for like 4-5 times. 3 times motherboard change, 1 time display change and 1 time volume button pannel change.
Click to expand...
Click to collapse
all under warranty?? not counting display? or did you get dead pixel?

raptorddd said:
all under warranty?? not counting display? or did you get dead pixel?
Click to expand...
Click to collapse
Yup. All under warranty and counting display replacement as well. No dead pixels as well and phone was rooted once during motherboard replacement
Sent from my LG-H818 using XDA-Developers mobile app

Need help!! LG G4(H815) not starting

Hi all,
so here is my problem.
Day before yesterday i had a perfectly working LG g4 H815 model with s/n 511 running on firmware v20h, when i decided to root it and install some mods.
so i flashed TWRP, installed xposed and xtrememusic mod. the phone booted normally after installing these. i didn't install any modules under xposed. the phone worked perfectly for two days. however today morning it hanged while taking photo with the camera app. when restarting it got stuck at LG logo for long time. My brother(who doesn't have any technical knowledge) pulled out the battery and restarted. Again it got stuck at LG logo. thinking somthing wrong he again repeated this only to find that it didn't power on at all this time. No LG logo no notofication light nothing.
Tried charging it(although battery was aroung 60-70%), pressing power button removing the battery. still nothing. the phone is not at all powering up.
However when i connect it with USB cable with laptop, laptop makes sound of getting usb connection detected. i took it to a service centre.
the technical guy there told that IC may have been faulty. he told me that motherboard needs to be replaced. however unofficially he may try heating the IC to get it booting.
What should i do now? Is the IC really fried. had the rooting and installing mod caused it?
Please help.
PS- the phone is imported and cannot be sent back for warranty purpose.

I think you are experiencing the dreaded LG G4 bootloop. I don't think rooting or modding caused a software problem. It "may" have caused a hardware problem simply because it generated enough heat to loosen the IC that little bit that initiates the problems you are describing. I rooted and installed the stock image in Nov 2015. Two weeks ago the phone froze - restarted and then could not be booted. LG sent me a Fedex label and I sent it off. Ten days later I received the same phone back. I assume they replaced the mainboard.
You should contact LG directly. I saw a class action suit that was called off because it appeared that LG will fix this particular problem (failed mainboard) out of warranty. Anyone please correct me on this if I'm wrong.

dsteinschneider said:
I think you are experiencing the dreaded LG G4 bootloop. I don't think rooting or modding caused a software problem. It "may" have caused a hardware problem simply because it generated enough heat to loosen the IC that little bit that initiates the problems you are describing. I rooted and installed the stock image in Nov 2015. Two weeks ago the phone froze - restarted and then could not be booted. LG sent me a Fedex label and I sent it off. Ten days later I received the same phone back. I assume they replaced the mainboard.
You should contact LG directly. I saw a class action suit that was called off because it appeared that LG will fix this particular problem (failed mainboard) out of warranty. Anyone please correct me on this if I'm wrong.
Click to expand...
Click to collapse
Hi thanks for the help.
But isn't the dreaded bootloop is that where the phone is stuck at the LG logo. Mine isn't booting at all. And the bootloop problem is due to big cores or such and not due to ic?

Mine wouldn't start at all - it bootlooped once for about a split second - then it was dead

Same is the problem with me. Bootlooped twice and then its completely dead. I have tried contacting Lg UK. Lets see what they say.

Ok so i got a reply from LG and they suggested me some steps to take (which are obviously not useful as it is completely dead). however they have also told me that they are willing to help me and asked me about details of purchase etc and "whether it was rooted".
so what should i reply rooted or not? will they detect it as it is dead.

dbzgoku said:
Ok so i got a reply from LG and they suggested me some steps to take (which are obviously not useful as it is completely dead). however they have also told me that they are willing to help me and asked me about details of purchase etc and "whether it was rooted".
so what should i reply rooted or not? will they detect it as it is dead.
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Sorry to be late on reply. I advise to not answer question whether phone was rooted. Here is my reasoning:
1. This problem is widely occuring - only a tiny percentage of people root their phones therefore question is irrelevant.
2. The problem is known to be that an IC becomes loose most likely due to heat - a better question would be - do you place the phone on a hot dashboard with GPS running while you are charging?

dsteinschneider said:
Sorry to be late on reply. I advise to not answer question whether phone was rooted. Here is my reasoning:
1. This problem is widely occuring - only a tiny percentage of people root their phones therefore question is irrelevant.
2. The problem is known to be that an IC becomes loose most likely due to heat - a better question would be - do you place the phone on a hot dashboard with GPS running while you are charging?
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thanks for the reply (although late). i have already sent the phone to LG replying as no root. Lets hope they repair it without any problems.
second i didnt do anything of anysort like placing on hot dashboard or such. one day while opening the camera app it decided to just hang and later on die on me.

I hope you didn't think I was saying you might have done something that would overheat your phone such as my second example. I was trying to come up with an example reason the IC loosens. Even if you did that the phone should survive such conditions. Let's hope the replacement motherboards somehow do better. My guess is that the soldering job is fine, the problem is probably bad design that doesn't "vent" the heat from chip.

dsteinschneider said:
I hope you didn't think I was saying you might have done something that would overheat your phone such as my second example. I was trying to come up with an example reason the IC loosens. Even if you did that the phone should survive such conditions. Let's hope the replacement motherboards somehow do better. My guess is that the soldering job is fine, the problem is probably bad design that doesn't "vent" the heat from chip.
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so what do you suggest after repair should i keep it or sell it? Lg g4 is no doubt the best phone when considering the value for money. no phone even twice in price comes close in camera and screen quality especially. but the unreliability of this phone has made me to consider selling it as soon as i get it back.

I'd keep it if your new board is high serial

lukem99626 said:
I'd keep it if your new board is high serial
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Well my old board was also high serial, beginning with 511

I'm going to take my chances - it's a great phone until it bootloops. I'm going to avoid scenarios best I can that could result in the phone heating up inside. That would be charging only if absolutely necessary while in my ProClip dash mount if the car is hot, using backup battery after depletion instead of charging more often etc. Thinking back I rarely put the phone into heat inducing situations - normal use results in the IC becoming loose at the 1 year mark. If mine bootloops exactly a year from now and LG fixes it again I'm an LG fan. If they blow me off no more LG.
I really regret not paying it off early and taking the $15/month deal for an S7 Edge last month

dbzgoku said:
Well my old board was also high serial, beginning with 511
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I mean like 611 ect thats what i got from lg

dsteinschneider said:
I'm going to take my chances - it's a great phone until it bootloops. I'm going to avoid scenarios best I can that could result in the phone heating up inside. That would be charging only if absolutely necessary while in my ProClip dash mount if the car is hot, using backup battery after depletion instead of charging more often etc. Thinking back I rarely put the phone into heat inducing situations - normal use results in the IC becoming loose at the 1 year mark. If mine bootloops exactly a year from now and LG fixes it again I'm an LG fan. If they blow me off no more LG.
I really regret not paying it off early and taking the $15/month deal for an S7 Edge last month
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Click to collapse
Well lg did mention in my communication with them that this carries 2 year warranty.

lukem99626 said:
I mean like 611 ect thats what i got from lg
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Didn't know that serials have gone so high

dbzgoku said:
Didn't know that serials have gone so high
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I brought a g4 in the new year sale it has the serial of 611 i had a 601 few months back i returned it ran hot and laggy the 611 one is cool running and lag free so i think something changed