LG G4 first freezed, then got stuck booting and now does not do anything at all - G4 Q&A, Help & Troubleshooting

Hi,
I have a 4 year old LG G4 with stock ROM and it was working perfectly until yesterday. I charged it in my car and at about 45% I plugged it off. Google Maps was running but frozen and the phone did not react to anything anymore. So I removed the battery and started it again. After booting it was frozen again (showing the home screen). Then I removed the battery, tried it again but this time it got stuck after the "bootloader unlocked" screen. Same procedure again, this time nothing happens at all. The screen is black, no vibration, nothing.
Also charging the phone does not work. It is not reacting to anything. Also tried removing the battery for a few hours and then tried it again. It seems like it died (but I have no idea why)
What else could I try? How can I find out what is broken?
If the phone is really broken now and it is not worth repairing it: How can I access the data on my external storage? It is encrypted with the default android encryption and as far as I know the key is stored on the internal storage.
Any help would be appreciated!
Best,
Simon

Nobody else had this problem?

Ilapo. Search for it.
Sent from my OnePlus 6T using XDA Labs

Cool, thanks!
But it seems that this is only working if my phone is at least turning on and I am able to boot the recovery mode. My phone is not doing anything anymore. No vibration, no logo, nothing. I think something in the processor died

Related

Non-rooted LG G3 D855 suddenly stuck on boot / can't get into recovery

Last night at a party I go to take a picture by holding down the Volume Down button whilst locked.The camera app didn't pop up and subsequently my phone crashed. I thought nothing of it, but then it wouldn't turn off or recognise anything. Even when I popped the battery out and in. It's stuck on boot. So I let it run out of charge, go home, charge it and the little battery icon animation that goes round once you've turned it on gets stuck, I can't tell what the phone's percentage is - it just stays frozen. Stuck on this now instead of boot.
After about 10 minutes of it being stuck suddenly I got the error message:
[784680] Fastboot mode started
?!?! What gives? I only rooted it once but then flashed it to stock immediately when the phone first came out and I've left it as is since.
Any help is really appreciated. I need my phone for work tomorrow.
;( Help bump
d855
Hi
Did you get any help?
I got The same problem remove The battery and now is stuck on Lg screen
Cant do hard reset same thing fastboot, cant flash it,
Appreciate Any help
QUOTE=DominicRead;55185334]Last night at a party I go to take a picture by holding down the Volume Down button whilst locked.The camera app didn't pop up and subsequently my phone crashed. I thought nothing of it, but then it wouldn't turn off or recognise anything. Even when I popped the battery out and in. It's stuck on boot. So I let it run out of charge, go home, charge it and the little battery icon animation that goes round once you've turned it on gets stuck, I can't tell what the phone's percentage is - it just stays frozen. Stuck on this now instead of boot.
After about 10 minutes of it being stuck suddenly I got the error message:
[784680] Fastboot mode started
?!?! What gives? I only rooted it once but then flashed it to stock immediately when the phone first came out and I've left it as is since.
Any help is really appreciated. I need my phone for work tomorrow.[/QUOTE]
mikesss said:
After about 10 minutes of it being stuck suddenly I got the error message:
[784680] Fastboot mode started
?!?! What gives? I only rooted it once but then flashed it to stock immediately when the phone first came out and I've left it as is since.
Any help is really appreciated. I need my phone for work tomorrow.
Click to expand...
Click to collapse
My phone did the same last week. Still haven't found a solution. Can't enter Download mode, as it hangs even there.
Same Thing
Bumping for the Guy as the Same thing happened to me.Any Kind of Help would be highly appreciated!
same
This is the same problem I have
Update: I sent it in for RMA. Will be receiving a replacement unit today. Seems like the only way around it, if a swap is the way to "fix" this.

Phone won't boot

Hi All,
My phone will not boot. I have tried soft resets multiple times. It will not even boot after I selected the factory data reset by holding down the volume down and power button since it seems like that requires a full boot to reset. During boot it shows the LG logo and sometimes makes it to the AT&T logo but after that either black screens, back to the LG logo and powers off, or boot cycles and keeps showing the LG logo multiple times. I have taken out the SD card and tried all these steps with and without it. Took out the sim card and reseated it. The phone is stock and not rooted.
Let me know if you guys need more information or have any ideas.
Thank you all and I'm sure this is been solved before, but I'm at work and don't have time to research so thoroughly through all the threads/posts.
if it's not rooted and stock, i'd send it back to lg under warranty
reg66 said:
if it's not rooted and stock, i'd send it back to lg under warranty
Click to expand...
Click to collapse
I have already put in a ticket to LG before this post for their return shipping information and repair. I was just hoping by some miracle that someone had a fix besides a factory reset since it won't even boot to allow the factory reset.
Thank you
Ok, sorry for the lacking help! Good luck, hope someone else replies with a suggestion
This just happened to me too.
Shows the lg logo. Sometimes the att logo.
But, just doesnt boot up. All i see is a blank screen :/
From everything i read here on XDA it seems that many of the phones are faulty.
Symptoms are almost identical. Outta no reason reboots and dead phones. Many of them are stock not rooted.
I have still no answer from LG about mine. Hope to hear soon. Something is going on with these phones but what causes it.....that`s the question....
The same thing happened to my H-815 model. I went to bed listening to YouTube and woke up to a dead phone. The LED doesn't come on when charging. Just like you, when I turn it on all I see is the LG boot screen and then it shuts off. The phone repeats this twice and then doesn't turn on again.

LG G3 unresponsive/extremely slow

Hello there. I have to write this again becuase the last topic I wrote didnt get posted...
I have a big problem with my G3 and I have tried everything I could but nothing helped so I hope you can help me.
First of all my phone is only stock. I didnt try rooting it or installing custom roms on it.
Heres the whole story of what happened:
A week ago my phone started to act strangely. When I tried turning the wifi off it restarted or froze for a bit and then went on normaly as if nothing happened. I didnt even have to input my pin. Then one day I got home and the phone simply started reseting itself constantly. Always loaded up to the pin screen but I didnt even have time to input the pin and it reset it self again. This went on for like 15 reset before I lost patience and pulled the battery which didnt help at all since after being turned back on it went back to the reseting. I found online that it was probably a battery problem but I was impatient (shipping to my country is over 2 weeks and buying a battery in stores here costs twice the normal price of a genuine battery but only for a "fake" battery) so I factory reseted it via power button+volume down. After that it worked normally but I lost all my data.
The day after this I spilled ice tea on the phone. I opened it, cleaned it and let it dry out. Turned it on after an hour of drying and it worked but after maybe 2 hours it began freezing. When I tapped on the screen it didnt react, when I pressed the power button it took more then 10 seconds to react to it. It turned on, didnt react to touch and then in mere seconds it went dark and then turned off. I couldnt even unlock the screen. Tried pulling the battery but then it wouldnt even turn on. It stayed on the LG logo. I left it on the logo and on the charger and after an hour or so it turned on and worked normally so I took it apart and cleaned it once more even under the screws and such and it worked after that. Until today.
The freezing problem returned. I was playing a game on it and chatting via messenger when the phone stopped reacting. I had signal, wifi, I got new notifications and basically everything on it worked but the screen didnt react to touch and when pressing the power button it took over 10 seconds to light up the screen, then it went darker and then it shut down. Couldnt do anything. After I pulled the battery it would get stuck in a boot loop for maybe 10-15 minutes and then load but the phone couldnt be used. Just as before the screen turned on with a delay but no reaction to touch whatsoever.
I tried factory reset, downgrading to a lower android version (from 6 to 4) with LGUP and lg flash tool, and I bought a new battery. Nothing worked. I managed to get it to android 4 but that didnt help either. I though it was a problem with 6 because the problem started after the update, before that I didnt have a single problem with my phone.
Now its in a state where it doesnt work. The phone is running, apps are upgrading after the factory reset and all that but I cant do anything with it. Once in a while it will work normally as if nothing but that is rare.
Could you please help ? I love this phone and I dont want to have to sell it for spare parts.
EDIT: I left the phone running to see what would happen an after several hours an error message appeared saying "Process system isnt responding". After pressing ok it worked fine. How can I fix this. I googled it but all I found was a problem with sd card (none is inside), with battery (I have a new one) and with rooting (mines not rooted).

G4 bricked, possibility of resurrection?

This is embarrassing, but I was trying to install Pokemon Go on my G4 and the phone got really hot and rebooted. It never came back. Just went into a boot loop. I found instructions online on how to do a master reset with the power button and volume down letting it up briefly when seeing the logo and then pressing it again and letting it boot. I answered the question about deleting all user data and then answered it again. It said it was erasing data, then froze for a few hours at "optimizing apps" on one of the steps while I left it plugged in. I eventually pulled the battery to get it to respond again and now it just shows the LG logo and then goes dark. While dark it doesn't respond to button presses or let me try again to power it on, etc.
Any chance of me getting this phone working again? Is there anything else I can try aside from the master reset that I've already tried?
Hello if you look under the battery and your serial number starts with 505 or close its dead.
Sent from my LG-H815 using XDA-Developers mobile app
Eudmin said:
This is embarrassing, but I was trying to install Pokemon Go on my G4 and the phone got really hot and rebooted. It never came back. Just went into a boot loop. I found instructions online on how to do a master reset with the power button and volume down letting it up briefly when seeing the logo and then pressing it again and letting it boot. I answered the question about deleting all user data and then answered it again. It said it was erasing data, then froze for a few hours at "optimizing apps" on one of the steps while I left it plugged in. I eventually pulled the battery to get it to respond again and now it just shows the LG logo and then goes dark. While dark it doesn't respond to button presses or let me try again to power it on, etc.
Any chance of me getting this phone working again? Is there anything else I can try aside from the master reset that I've already tried?
Click to expand...
Click to collapse
send it back for reapir.
hi, mine was 509. It died 2 weeks ago, showing only "LG life is good" if trying to boot it. No way into recovery. (did boot one time very slowly to lockscreen before the definitive death)
This seems to be the same for you.... dead CPU I suppose. I'm still waiting for the repair.
(curious about the 505 asserted here, since mine was higher)
Hello the first 3 digits of serial number indicate date of manufacture, and the early ones have a manufacturing defect.
Sent from my LG-H815 using XDA-Developers mobile app
Hello,
mine was 510 and died on me 4 weeks ago, (boot loop with only LG logo) as it died from overheating (or at least was very hot when die occured), I tried to cool it and it was "succesful"
It put it in the freezer for some time and then could boot it on TWRP and make a full backup (I left it in the freezer the whole time)!
boot at normal temp lead to black screen in 10-15secs. I sent it back for repair (motherboard replacement was made in less than 1 week by Lg France), I am now waiting the answer from Lg developer to unlock the bootloader again.
I guess you can at least try and see if you can have the same result as me.
Marc
G4 bricked, possibility of resurrection?
Click to expand...
Click to collapse
No.

H8324 XZ2 Compact Boot (Launcher?) issue

Hello,
My wife's Sony Xperia XZ2 Compact with model number H8324 has an issue with booting or maybe the launcher getting stuck in a loop after getting to the lock screen for a split second.
The phone seems to boot like normal and gets to the lock screen, we are even able to punch in one or two digits of the 4 digit pass code. Then it goes into a loop of the notification bar and back button flickering. From then on the phone is not responding except for the power button which brings up the normal "Turn off, Reboot, and Lockdown" menu. The issue just started out of nowhere yesterday morning and we haven't been able to fix it yet. We haven't done any rooting or custom rom flashing, it's running the official Sony software but it's out of warranty.
Here's a video showing the issue. The video shows the whole boot process but the link takes you to the last part after the logos.
We would love to get some files off it so if there is a way anyone can help us with that we'd prefer it over a hard reset.
Things we've already tried
Turning the phone off and on again
Unlocking the phone in the split second the lock screen works, this is just too short to swipe up and then put in four digits.
Rebooting the phone
Booting while charging
Booting into safe mode (this has the same issue)
Connecting the phone with USB to a pc, the phone is recognized by Windows, but it doesn't share it's filesystem with Windows.
Connecting the ADB to it, alas usb debugging is not yet enabled on the phone
Trying to get into recovery mode, we haven't been able to get into the recovery menu. Googling seems to indicate it might be holding volume up + power button when the phone is off but then it doesn't seem to do anything at all.
We're currently trying to run out the battery of the phone to see if that will resolve the issue on it's own.
If anyone has any idea, we would love to hear it.
no solution from me. But I have exact same problem and tried same things. Yesterday I did not used the phone. Day before shut down, today tunred it on and it starts with the issue. Strange it happens to both of us at the same time frame. removing sims did not help either.
By holding down "volume down+power" I was able to boot in safe mode but the same issue occur; no way to get into the phone.
Yeah that's weird. Draining the battery did nothing for us. There was not much data that we wanted to extract from the phone. Most of it was contacts and an emulated Pokémon game save file. So my wife eventually reflashed the OS with Xperia companion which did actually resolve the issue of not being able to use the phone.
I faced the same problem today ,i have xz2 , yesterday it was 24% and today i found it 0% so I put it in the charger ,but I faced this problem

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