Develop Bugs

MM Causing LG G4 To Die ?

most of us who are using 505 are encounter some kind of bootloop and causing the phone to be dead the only known solution is RMA
Did you experience the same thing? As in series 505 motherboard that got replaced by Series 512 motherboard and software updated to MM?
Wow. It seems like a serious issue. I hope it will be patched soon. I am still on Lollipop though.
Anyway, if it is a widespread issue even after the mobo change, I am guessing G4 has a deep-rooted manufacturing flaw or really incompetent diagnostic (just change mobo to 'resolve' bootloop death).
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anyone who send their phone whose has a changed of mobo(Motherboard) has re encounter this issue?

there's a thread in Q&A about this. issues were likely with the earlier version with 505 to 507 or 509. 510 and above doesnt seem to have that issue

I highly doubt all of the hundred thousands phones from 505 to 509 to have this issue. But there is such issue for sure. What is the reason no one knows or at least is not saying.
Sent from my LG-H815 using Tapatalk

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?
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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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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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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?
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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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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.
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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
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what is the date of manufacture and hardware ver. ?

Safy4u said:
what is the date of manufacture and hardware ver. ?
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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
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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.

Semi-Dead Phone

Yesterday, my groupmates and I were presenting this VR application to our panelists. Somehow in the middle of the demo, my phone rebooted and it took a while before it actually opened. After it opened though, a few seconds or about a minute later it will reboot again and this happened a few times so I decided to turn it off. Later, when I decided to turn it on again it won't let me past the LG logo and it just keeps on bootlooping so I decided to turn it off by removing the battery and let it stay off for a while. Again when I decided to check on it, the phone won't even turn on even after holding the power button for a few seconds and trying to remove battery and place it back. I decided to check on it later again and it would boot but only until the LG logo again and this time it stays there for a few seconds and then it goes black and this just keeps on happening every time I try opening it. I even tried to do a hard reset (reset to factory settings) but only the same thing happens, the phone freezes at the "Yes" option when doing the factory reset and it goes to black after a few seconds. I even tried flashing a firmware but it won't let me do it because the same thing happens (reboots into LG logo, freezes and then turns black).
What could have happened? Is there anyway to fix this? :/
Any help would be greatly appreciated.
Edit: My phone (H815) is running MM, not rooted,

postnobil said:
What could have happened? Is there anyway to fix this? :/
Any help would be greatly appreciated.
Edit: My phone (H815) is running MM, not rooted,
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Unfortunately you are also in bootloop effected G4 club now. If it is in warranty, claim it as its board will be replaced, it is hardware failure. What is Serial Number of your G4?

Waxim1 said:
Unfortunately you are also in bootloop effected G4 club now. If it is in warranty, claim it as its board will be replaced, it is hardware failure. What is Serial Number of your G4?
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Damn :/ I bought mine from an online store not directly related to LG but they have a 1 year service warranty though so I'll try that.
How do I know the serial number?

postnobil said:
Damn :/ I bought mine from an online store not directly related to LG but they have a 1 year service warranty though so I'll try that.
How do I know the serial number?
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Your S/N is on the phone behind the battery. They will also need your IMEI number.
So you, just like hundreds here, and I am pretty sure it's thousands globally have got bootloop issue so there is no need to create new thread as that is not going to fix your issue as you are in the same boat just like all of us with probably your serial number starting with 505xxx.
http://forum.xda-developers.com/g4/general/eventually-505-g4s-bootloop-problem-t3337022 and many other threads...

gedas5 said:
Your S/N is on the phone behind the battery. They will also need your IMEI number.
So you, just like hundreds here, and I am pretty sure it's thousands globally have got bootloop issue so there is no need to create new thread as that is not going to fix your issue as you are in the same boat just like all of us with probably your serial number starting with 505xxx.
http://forum.xda-developers.com/g4/general/eventually-505-g4s-bootloop-problem-t3337022 and many other threads...
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Mine's 511**********

postnobil said:
Mine's 511**********
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Oh well, unlucky... I don't remember seeing any 511 developing bootloop which might be concern for others since I believe that from November 2015 they fixed the bootloop issue with hardware revision 1.1. You can add it here http://forum.xda-developers.com/g4/general/longest-running-bootloop-g4-t3386329 so that others are aware that 511 can also develop bootloop

gedas5 said:
Oh well, unlucky... I don't remember seeing any 511 developing bootloop which might be concern for others since I believe that from November 2015 they fixed the bootloop issue with hardware revision 1.1. You can add it here http://forum.xda-developers.com/g4/general/longest-running-bootloop-g4-t3386329 so that others are aware that 511 can also develop bootloop
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Click to collapse
Alrighty then
Right now my phone won't turn on even after removing/replacing battery :/

gedas5 said:
Oh well, unlucky... I don't remember seeing any 511 developing bootloop which might be concern for others since I believe that from November 2015 they fixed the bootloop issue with hardware revision 1.1. You can add it here http://forum.xda-developers.com/g4/general/longest-running-bootloop-g4-t3386329 so that others are aware that 511 can also develop bootloop
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Hey quick question. What specifically in the hardware is the problem?

postnobil said:
Hey quick question. What specifically in the hardware is the problem?
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Click to collapse
I'm sure you'll find all the answers going through threads on LG G4 bootloop issue. Seems like the pins on the qualcomm chip get somehow loose or unstuck from the motherboard overtime (usually the 2 big cores) that why the phone is unable to boot when that happens. That's why disabling the big cores helps to boot the phone using only 4 small cores.

gedas5 said:
I'm sure you'll find all the answers going through threads on LG G4 bootloop issue. Seems like the pins on the qualcomm chip get somehow loose or unstuck from the motherboard overtime (usually the 2 big cores) that why the phone is unable to boot when that happens. That's why disabling the big cores helps to boot the phone using only 4 small cores.
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Can it be fixed without sending it to LG? Maybe send it to some guy that can repair a phone?

postnobil said:
Can it be fixed without sending it to LG? Maybe send it to some guy that can repair a phone?
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i think they can.. but why not send it to LG.. i think its better. you may get a new phone.

postnobil said:
Can it be fixed without sending it to LG? Maybe send it to some guy that can repair a phone?
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Click to collapse
Not sure why you are not checking what other people are posting... http://forum.xda-developers.com/g4/general/repair-bootlooping-device-t3426976

mines 506**** have you heard any about this s/n
---------- Post added at 09:04 PM ---------- Previous post was at 09:01 PM ----------
gedas5 said:
Not sure why you are not checking what other people are posting... http://forum.xda-developers.com/g4/general/repair-bootlooping-device-t3426976
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u gave to a person who says he can repair it, it was okay for few hours then again its restarting and same problem again stucked in bootloop now going to disable some processors and flash to stock rom hopefully that might solve my problem but not sure yet..

saqi939 said:
mines 506**** have you heard any about this s/n
---------- Post added at 09:04 PM ---------- Previous post was at 09:01 PM ----------
u gave to a person who says he can repair it, it was okay for few hours then again its restarting and same problem again stucked in bootloop now going to disable some processors and flash to stock rom hopefully that might solve my problem but not sure yet..
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supposely upto 510 were good.. but yet they still to bootloop.. so chances are high for your device.

raptorddd said:
supposely upto 510 were good.. but yet they still to bootloop.. so chances are high for your device.
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and mine is stuck now in bootloop can't even access the download mode now.

saqi939 said:
and mine is stuck now in bootloop can't even access the download mode now.
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Click to collapse
sorry to hear that .. youll have to send it in fr repair..

raptorddd said:
i think they can.. but why not send it to LG.. i think its better. you may get a new phone.
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Click to collapse
Problem is I bought the phone from an online retailer and all they have is labor warranty. I've also tried e-mailing LG here in the Philippines but I haven't received a reply yet and it's been almost a week.
Can removing the 2 big cores (hardware, is it even possible?) by a guy who can repair it, fix the phone?

postnobil said:
Problem is I bought the phone from an online retailer and all they have is labor warranty. I've also tried e-mailing LG here in the Philippines but I haven't received a reply yet and it's been almost a week.
Can removing the 2 big cores (hardware, is it even possible?) by a guy who can repair it, fix the phone?
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Click to collapse
they dont have chat option on pholippines? i always chat with them in the USA. if you have warranty callled them or chat so they can fix it . or get you a new phone.. or repaired.
not sure thers is a TOT file that disable it then root it and enable other 3 small cores. to boot.. and use phone.
not sure if you can use it with your phone i cant no support for USA variants
https://www.reddit.com/r/lgg4/comments/45gfg2/dae_g4_series_msm_big_core_disable_tool_guide/

postnobil said:
Problem is I bought the phone from an online retailer and all they have is labor warranty. I've also tried e-mailing LG here in the Philippines but I haven't received a reply yet and it's been almost a week.
Can removing the 2 big cores (hardware, is it even possible?) by a guy who can repair it, fix the phone?
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Click to collapse
U cant claim warranty from lg unless u buy from them directly ...u best bet is to contact the online store n tell them to contact LG otherwise ur screwed lg will never accept warranty n fixing it via technician cost 200US$ cuz they need to replace a motherboard from fixed working g4....isnt lg phones a pain in the *** next time dont buy lg phones...

jinderation said:
U cant claim warranty from lg unless u buy from them directly ...u best bet is to contact the online store n tell them to contact LG otherwise ur screwed lg will never accept warranty n fixing it via technician cost 200US$ cuz they need to replace a motherboard from fixed working g4
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That is not correct. 12 month warranty is provided by LG for the device so he can go ahead and get in touch with LG. As long as he's got proof of purchase that's all they ask.

LG G4 bootloop problem

Hello everybody,
I want to buy LG G4 dual sim smartphone. I hear that it has bootloop problem. I want to ask all of you. Should I buy it?

the bootloop problem is only on S/N:505 and 506 motherboards. You should check before buying if its 6XX then you are good to go.

Fuadcim said:
Hello everybody,
I want to buy LG G4 dual sim smartphone. I hear that it has bootloop problem. I want to ask all of you. Should I buy it?
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Click to collapse
metuncc said:
the bootloop problem is only on S/N:505 and 506 motherboards. You should check before buying if its 6XX then you are good to go.
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Click to collapse
It's not just 505, 506 even 512 died on XDA. Haven't heard anything from 6XX tho. Not, yet.
Sent from my LG-H815 using Tapatalk

Hi, I'm thinking of getting a G4 too. How can I check the motherboard number? Thanks

DanielM998 said:
Hi, I'm thinking of getting a G4 too. How can I check the motherboard number? Thanks
Click to expand...
Click to collapse
The first 3 digits of the SERIAL. This serial is on a sticker behind the battery
.

steadfasterX said:
The first 3 digits of the SERIAL. This serial is on a sticker behind the battery
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Click to collapse
Thanks. Just to make sure, has it been confirmed that 2016 devices don't suffer from this issue?

DanielM998 said:
Thanks. Just to make sure, has it been confirmed that 2016 devices don't suffer from this issue?
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yes they do but in a lower sacel. so its i would say if you get a 6XX 601 and up maybe a 30% chance.. just make sure it has warranty.

raptorddd said:
yes they do but in a lower sacel. so its i would say if you get a 6XX 601 and up maybe a 30% chance.. just make sure it has warranty.
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Click to collapse
I never had heard about a 6xx having a bootloop. I own 2 h815 with 6xx serial do you have any prove for that?
Tbo there will be no guarantee and as raptorddd said make sure you get the invoice with it. If the device has no guarantee anymore the chances are good (which is bad) that it is a 5xx device.
.

steadfasterX said:
I never had heard about a 6xx having a bootloop. I own 2 h815 with 6xx serial do you have any prove for that?
Tbo there will be no guarantee and as raptorddd said make sure you get the invoice with it. If the device has no guarantee anymore the chances are good (which is bad) that it is a 5xx device.
.
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go to the reddit thread read there, go to the thread here G4 bootloop and youll see. the latest ive read was a 604 from some guy in russia. from pdnet forum. i have read people reporting from 601 to 603 just one 604. i have not seen or read a 605.

tbh I was considering the G4 only because I found a used one for cheap. Seeing the risk there is in buying one, I'll hold on to my SGS II for a little longer and get something like a OP3 later

i had a 506 which bootlooped, now I have 609. I hope this one is not gonna

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
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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