Cpu Dying? - Galaxy S III Q&A, Help & Troubleshooting

This is my first time posting here so please bare with me for lack of information.
About a week ago i plugged my mothers 3 amp charger into my galaxy s3 sph-l710 and then boom phone froze and shut off and now freezes constantly, even the boot has slowed down and the sprint logo goes at a snail-like speed.
Im under the impression the phone would only take the amount of power it requires so im not sure that has any relevance.
I did a hard reset and does not resolve the problem, i managed to get it setup and turn on show cpu usage and i noticed it hangs on several system processes.
At this moment i cant even manage to get the wifi on or lock the screen, it does not acknowledge either.
Would like some help on this topic to see if i can narrow down a way to fix it or decide to give up, which i wont without a fight

AlThamen said:
This is my first time posting here so please bare with me for lack of information.
About a week ago i plugged my mothers 3 amp charger into my galaxy s3 sph-l710 and then boom phone froze and shut off and now freezes constantly, even the boot has slowed down and the sprint logo goes at a snail-like speed.
Im under the impression the phone would only take the amount of power it requires so im not sure that has any relevance.
I did a hard reset and does not resolve the problem, i managed to get it setup and turn on show cpu usage and i noticed it hangs on several system processes.
At this moment i cant even manage to get the wifi on or lock the screen, it does not acknowledge either.
Would like some help on this topic to see if i can narrow down a way to fix it or decide to give up, which i wont without a fight
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Click to collapse
Are you on stock or custom ROM? if you're on stock, does it still lag?

Related

my LGOG keeps turning off after

So my phone turns off randomly and stays off for a couple minutes and i have to hit the power like 50 times before it finally loads normal...lol i have no idea whats wrong with its really not bothering me much but every once in a while it becomes an inconvenience.
hondasforlife said:
So my phone turns off randomly and stays off for a couple minutes and i have to hit the power like 50 times before it finally loads normal...lol i have no idea whats wrong with its really not bothering me much but every once in a while it becomes an inconvenience.
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Give us more info please. Is it still completely stock? I had similar problems when I was still stock, getting black screens all the time and had to hold power for a while to get it to shut off to be able to turn it on. Once rooted and unlocked, I was able to install a custom ROM and the problem never came up again.

[Q] Left phone in the car. Now it's stuck on bootloader

Had some soccer games to ref this morning and didn't set my phone out of the sunlight. Came out to the car after the games and it was off and very warm. Tried turning it on and it wouldn't. After I got home and it cooled down on the car A/C the whole way home it only does the below things.
The phone will flash the LG logo and then go to a black screen with the backlight running. nothing further happens after that. I can put it in download mode and such, but I really don't want to wipe my phone. Any ideas as to why it is only stuck at the bootloader.
life256 said:
Had some soccer games to ref this morning and didn't set my phone out of the sunlight. Came out to the car after the games and it was off and very warm. Tried turning it on and it wouldn't. After I got home and it cooled down on the car A/C the whole way home it only does the below things.
The phone will flash the LG logo and then go to a black screen with the backlight running. nothing further happens after that. I can put it in download mode and such, but I really don't want to wipe my phone. Any ideas as to why it is only stuck at the bootloader.
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If you plug in charger what does light on power button do?
adfurgerson said:
If you plug in charger what does light on power button do?
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turns red.
everything seems to be normal.
Just nothing past the first blip of the LG logo.
Thanks for any help!
life256 said:
turns red.
everything seems to be normal.
Just nothing past the first blip of the LG logo.
Thanks for any help!
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Click to collapse
It should blink slowly or maybe pulse would better describe it. I had that happen from heat when running benchmarks. Was able to get it to boot by plugging it in , powering it on and off then unplugging, then plugging it in and powering it on until the light blinked and charging animation showed. Others have taken phone apart and diconnected battery.
adfurgerson said:
It should blink slowly or maybe pulse would better describe it. I had that happen from heat when running benchmarks. Was able to get it to boot by plugging it in , powering it on and off then unplugging, then plugging it in and powering it on until the light blinked and charging animation showed. Others have taken phone apart and diconnected battery.
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Just moments before you replied I began a re-flash of stock ROM. (probably a somewhat hasty decision in hind sight.)
I am beginning to fear more... It just show the battery charging animation on the screen now and will only make it to the AT&T music before locking up and going no further.
I read stories elsewhere of serious battery problems from leaving it get that hot. I hope I am just being paranoid and that the phone is truly just a dead battery. Although that doesn't make any sense considering it was at 100% this morning and the phone has been off more than on since then with no use at all.
Many thanks again for any help! I am certainly not new to rooting and such and have been an XDA lurker for many years. I am very proficient with phone issues and if there is anything else more technical to try I am not afraid to try that as well.
life256 said:
Just moments before you replied I began a re-flash of stock ROM. (probably a somewhat hasty decision in hind sight.)
I am beginning to fear more... It just show the battery charging animation on the screen now and will only make it to the AT&T music before locking up and going no further.
I read stories elsewhere of serious battery problems from leaving it get that hot. I hope I am just being paranoid and that the phone is truly just a dead battery. Although that doesn't make any sense considering it was at 100% this morning and the phone has been off more than on since then with no use at all.
Many thanks again for any help! I am certainly not new to rooting and such and have been an XDA lurker for many years. I am very proficient with phone issues and if there is anything else more technical to try I am not afraid to try that as well.
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Do you mean you used lgnpst to restore?
If at this point it appears to be charging right and still hangs on boot you may need to do a factory reset. It will wipe your internal storage though. If you wish to try that it is done by powering off then holding volume down and power until reset menu comes up.
adfurgerson said:
Do you mean you used lgnpst to restore?
If at this point it appears to be charging right and still hangs on boot you may need to do a factory reset. It will wipe your internal storage though. If you wish to try that it is done by powering off then holding volume down and power until reset menu comes up.
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Yes, LGNPST.
Having troubles with vol down - power button. Seemed like I had issues with this last time when I nearly bricked it trying to root the phone.
Thanks again for the help. Almost in the home stretch now I think. Just waiting for it to get a charge now.
I had this happen once using Navigation on a cheap car charger.
I was in unknown territory, but as I got back to the main highway, I found myself knowing where I was going and stopped paying attention to my phone.
This lead to my phone getting hotter and hotter until it shat itself and would only display a black screen. I unplugged it and attempted to turn it off, which seemed to work. I left it off for an hour or so until I got home. It still wouldn't turn on for a while, so I stuck it on the charger. After a few minutes, it came up fine.
YMMV.

Strange problem with my i535 (vibrate pulsing)

so to begin with as much info as possible, this began yesterday when I noticed my power button was unresponsive. I tried issuing it to turn the screen off and turn back on, but nothing. So I held it down and eventually was able to force restart it believing the device was just being unresponsive. The next thing I knew, it wasn't turning on and it was simply "beating." By beating I mean the phone is off, whenever the battery is in, it just stays on a blank screen, it might load the samsung logo, but ultimately it is a blank screen. Something extremely strange is that though the phone is off and unresponsive the damn thing is pulsating. As if it had a heart beat lol, but it just vibrates every 3 seconds. Has anyone seen or heard of this? My research and found that the typical problem is a faulty power switch which is what I'm being led to. I found suggestions, none work. There is one I have yet to try. It is this one, /watch?v=3Glllc7bEJs this is quite an extreme solution that I dont mind going to since I am due for an upgrade any how. I just want to remove a lot of important information that is on this phone before I upgrade. Any input would be greatly appreciated.
TL;DR
Phone wont turn on, blank black screen with phone vibating every 3 seconds. Potentially power switch, Need help recovering data.
Thanks!
EDIT: The problem is called a "boot-loop"
waterbottels said:
EDIT: The problem is called a "boot-loop"
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Wrong forum, this is i9300 International you have the i535 Verison you need to ask here

Galaxy S Relay 4G(SGH-T699) completely bricked?

I'm new to this site so if this thread is in the wrong place, please redirect me to the appropriate section.
A couple days ago, my GSR had shut off for no reason that I could find, and would not turn on (even to try to boot in recovery mode) for 2 hours(it would go into the boot screen but would then shut off after 5-7 seconds of "booting up"), when suddenly it started working again. I couldn't figure out why it stopped working or why it suddenly starting working again. I even changed batteries but that didn't influence anything. Then, exactly (I mean exactly) 24 hours later at the same time, it shut off again. This time, it won't even show the boot logo, and instead says, for less than a second "Movinand checksum confirmation fail." It is rooted, but has been rooted for almost a year with no real modifications done to the device and no previous issues that I noticed. I have tried changing batteries, trying different chargers, replacing the SIM and SD, and tried booting into recovery but has no effect because it shuts off before I can even do anything to it. I've seen a lot of places say wipe cache partition by going into recovery mode, but that's just not possible with what is going on. I try every other hour to see if it has somehow started working again, but now won't even show the "movinand checksum..." message. It is charged because it has been plugged in most of the time that this has been going on. It's not water damaged, I have never dropped it, and it hasn't been exposed to any intense heat or coldness ever in its life. I'm at a loss here, not sure what to do, as it seems I've tried nearly everything. I'm welcoming any suggestions you may have, as well as answering any questions about the situation.
In Need of Dire Help! Galaxy S Relay 4G(SGH-T699) Completely Bricked?
XmashMAN said:
I'm new to this site so if this thread is in the wrong place, please redirect me to the appropriate section.
A couple days ago, my GSR had shut off for no reason that I could find, and would not turn on (even to try to boot in recovery mode) for 2 hours(it would go into the boot screen but would then shut off after 5-7 seconds of "booting up"), when suddenly it started working again. I couldn't figure out why it stopped working or why it suddenly starting working again. I even changed batteries but that didn't influence anything. Then, exactly (I mean exactly) 24 hours later at the same time, it shut off again. This time, it won't even show the boot logo, and instead says, for less than a second "Movinand checksum confirmation fail." It is rooted, but has been rooted for almost a year with no real modifications done to the device and no previous issues that I noticed. I have tried changing batteries, trying different chargers, replacing the SIM and SD, and tried booting into recovery but has no effect because it shuts off before I can even do anything to it. I've seen a lot of places say wipe cache partition by going into recovery mode, but that's just not possible with what is going on. I try every other hour to see if it has somehow started working again, but now won't even show the "movinand checksum..." message. It is charged because it has been plugged in most of the time that this has been going on. It's not water damaged, I have never dropped it, and it hasn't been exposed to any intense heat or coldness ever in its life. I'm at a loss here, not sure what to do, as it seems I've tried nearly everything. I'm welcoming any suggestions you may have, as well as answering any questions about the situation.
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Edit, 11/12/2014: As of today, I managed to get myself into ODIN mode, but will only stay in ODIN mode for about
5 seconds before it shuts off. I can repeatedly do this as much as I want, but does not change anything to how long before it shuts off. I've tried rebooting through adb reboot-bootloader, but since my pc cannot find my device, I get this error "error: device not found". I made sure the drivers are installed, as they needed to be for me to even root my phone, but still no other results.
Also, when I take the battery out and put it back in, it vibrates as if it will boot up, but then red text saying "Movinand checksum..." comes up for a split second, then vibrates again with the same text. Then I can't do anything else until I remove the battery. I'm thinking about getting a JIG that will force it into download mode or recovery mode if one even exists.
XmashMAN said:
Edit, 11/12/2014: As of today, I managed to get myself into ODIN mode, but will only stay in ODIN mode for about
5 seconds before it shuts off. I can repeatedly do this as much as I want, but does not change anything to how long before it shuts off. I've tried rebooting through adb reboot-bootloader, but since my pc cannot find my device, I get this error "error: device not found". I made sure the drivers are installed, as they needed to be for me to even root my phone, but still no other results.
Also, when I take the battery out and put it back in, it vibrates as if it will boot up, but then red text saying "Movinand checksum..." comes up for a split second, then vibrates again with the same text. Then I can't do anything else until I remove the battery. I'm thinking about getting a JIG that will force it into download mode or recovery mode if one even exists.
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Click to collapse
The jig is for getting the phone into Download Mode, but I don't believe it's any help in keeping it there. If the phone won't stay in Download Mode, even with a charged battery, then I fear the phone is a lost cause. The only other thing that might help at this point would be a JTAG service, if it's available for that device like it is for the more popular Samsungs.
es0tericcha0s said:
The jig is for getting the phone into Download Mode, but I don't believe it's any help in keeping it there. If the phone won't stay in Download Mode, even with a charged battery, then I fear the phone is a lost cause. The only other thing that might help at this point would be a JTAG service, if it's available for that device like it is for the more popular Samsungs.
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Click to collapse
I'm not sure what I did, but I'm able to stay into ODIN mode for as long as I want. I'm still unable to boot into recovery. Is it possible to restore my phone through ODIN?
Sorry, I misunderstood. I thought you had said it reboots while in Download Mode. If it stays there, then that's definitely the 1st thing to try.
es0tericcha0s said:
Sorry, I misunderstood. I thought you had said it reboots while in Download Mode. If it stays there, then that's definitely the 1st thing to try.
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Click to collapse
Well, it stopped turning off while in download mode just recently. I'm just not sure what caused it. Also, I noticed that the battery I had in my phone when it first started shutting off is slightly bloated. I'm not sure if it's serious enough, but I know that bad batteries bloat, and they can potentially cause issues with your device. But I put my default battery in, but it didn't change anything in regard to the movinand error.
The Galaxy S Relay 4G can be a very odd challenge.
XmashMAN said:
Well, it stopped turning off while in download mode just recently. I'm just not sure what caused it. Also, I noticed that the battery I had in my phone when it first started shutting off is slightly bloated. I'm not sure if it's serious enough, but I know that bad batteries bloat, and they can potentially cause issues with your device.
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Wow! I'm just making a note here as a marker I can return to and follow up on. This seems almost the worst that anyone can deal with. If the person that made this post just so happens to still be around, or for anyone who may be unfortunately dealing with such an issue, I have an either or "possible" fix, yet haven't been in this particular situation. There are repair files for this device I would assume could be used for this. I'm dropping them, and the last official Samsung software issued for the SGH T699. If I so much as even get a hint my device is going in this direction, I usually flash in the original firmware if and when I can. Back it up and flash it again just to make sure I have a clean build. I can work with stock. It's hard to work with a brick. This device can be very strange so far with any results I'm getting. Which is odd to me on one level because I've haven't had as much difficulty with any of my other devices such as I'm having with this one. I always try to be prepared for any eventuality before I start working on "any" device. I'd call it a very important suggestion, especially for this Galaxy S Relay 4G, to prepare yourself, it's going to be a fun ride!

LGv10 stuck on LG splash screen on boot

Hey there. Out of nowhere today my phone rebooted on it's own and is now stuck on the "LG Life's Good" splash screen. I have the AT&T version (H900) and bone stock everything (I have not messed with bootloaders or rooting or anything). I tried removing the battery and this also does nothing. Anyone else have this issue and know what to do to fix it?
Thanks
Update: After letting the phone sit for about 20 minutes it magically booted and is now working fine... not sure what happened.
Have you tried doing a factory reset of you phone?
1) Turn off the phone.
2) Then hold down the Volume Down and Power button together for a couple of seconds.
3) As soon as the LG logo is displayed, let go of the Power key, keep pressing the Volume Down and then press once more the Power button.
Afterwards you should see a factory reset menu on your screen.
4) Confirm process by choosing appropriate options using Volume rockers to navigate and Power button to confirm.
5) Now your phone should restart.
6) Success! The hard reset has just been completed.
I am having this same problem.
Was using Pandora and GPS. It cut off and has not come back on. I attempted to open in safe mode recovery mode l and tried to-do a factory reset.
When I did the reset It went through the erasing process but when it rebooted it stayed on the LG screen. I've tried all the "common" trouble shooting suggestions... Its been two hours now.
Any new experiences with this issue?
Im also having the same issue with my V10 - Verizon model. Watching a YouTube video and it reset and got stuck on the LG logo splash screen. Followed instructions to do a factory reset and after about 45 min of being stuck on the factory reset screen after I confirmed it reset and booted up. All data and setting were still saved, and after about 3-5 minutes it reset again and went right back to being stuck on the LG splash screen.
Any other advice? or is it just dead?
I am having the same issue with my stock AT&T V10. It randomly turned off, then I couldn't even get it to turn on. No charge screen. No Life's Good. I took out the battery and it would get to the blinking red question mark, but there is no way that I can see that I can use the phone without the battery. Sometimes the phone will boot to the LG screen, but mostly it will not. Even if it does, it will shut down after 3 mins or so.
Once I tried to hard reset it, and the phone just vibrated until i took the battery out. So I dont know whats going on. The phone has been running warm when playing Pokemon Go so maybe that's the culprit? Not like I was playing it all the time though.
Luckily I moved *most* of the new baby pictures over to the microSD. Ugh, I hope I can get the rest!
downstat said:
I am having the same issue with my stock AT&T V10. It randomly turned off, then I couldn't even get it to turn on. No charge screen. No Life's Good. I took out the battery and it would get to the blinking red question mark, but there is no way that I can see that I can use the phone without the battery. Sometimes the phone will boot to the LG screen, but mostly it will not. Even if it does, it will shut down after 3 mins or so.
Once I tried to hard reset it, and the phone just vibrated until i took the battery out. So I dont know whats going on. The phone has been running warm when playing Pokemon Go so maybe that's the culprit? Not like I was playing it all the time though.
Luckily I moved *most* of the new baby pictures over to the microSD. Ugh, I hope I can get the rest!
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@downstat what a coincidence that i happen to have run into the exact same problems as you today. Phone turned off suddenly, wont turn off, took out and put back battery and now it goes into LG screen for a few, and it vibrates when i attempt safe mode. wth is this...
jjall said:
@downstat what a coincidence that i happen to have run into the exact same problems as you today. Phone turned off suddenly, wont turn off, took out and put back battery and now it goes into LG screen for a few, and it vibrates when i attempt safe mode. wth is this...
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@jjall Very odd. Glad I am not the only one, though! I chatted with an AT&T service tech last night and he basically said he has no idea what is going on, but what he read about something similar indicated that the phone and all the files are most likely corrupted. Luckily I moved most of the photos over to the extra microsd, I am going to an AT&T service center to see if they can work any magic and retrieve any other files. Last night the tech started a warranty replacement and the new(ish) phone is on its way.
I did get it to boot to the white safe mode screen but was not ready to say erase all, just in case it erases the photos. I chose to restart the phone and nothing, just black. Every once in a while the phone will just vibrate for 30 seconds before shutting down while the screen is black. Other times I get the soft vibrate as though it is turning on, but nothing happens. Some times I get the LG screen, but then that just turns off. No rhyme or reason except that I at least get some response after the phone and battery have been apart for a while.
I'll update when I get back.
downstat said:
@jjall Very odd. Glad I am not the only one, though! I chatted with an AT&T service tech last night and he basically said he has no idea what is going on, but what he read about something similar indicated that the phone and all the files are most likely corrupted. Luckily I moved most of the photos over to the extra microsd, I am going to an AT&T service center to see if they can work any magic and retrieve any other files. Last night the tech started a warranty replacement and the new(ish) phone is on its way.
I did get it to boot to the white safe mode screen but was not ready to say erase all, just in case it erases the photos. I chose to restart the phone and nothing, just black. Every once in a while the phone will just vibrate for 30 seconds before shutting down while the screen is black. Other times I get the soft vibrate as though it is turning on, but nothing happens. Some times I get the LG screen, but then that just turns off. No rhyme or reason except that I at least get some response after the phone and battery have been apart for a while.
I'll update when I get back.
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Yeah. I get the same thing. I'm taking it to att today to see if anything can be done. My only problem is that I dropped the phone a few months ago, the only time i've dropped it, and lens came off without me noticing. I'm pretty sure that voids the warranty. Either way, i'll see if i can pay for an upgrade or something. Good luck to you.
jjall said:
Yeah. I get the same thing. I'm taking it to att today to see if anything can be done. My only problem is that I dropped the phone a few months ago, the only time i've dropped it, and lens came off without me noticing. I'm pretty sure that voids the warranty. Either way, i'll see if i can pay for an upgrade or something. Good luck to you.
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My guys said they could not do anything, but as I was playing with the phone, it magically came to life! I was in the process of moving all the photos to the microsd, then it froze, crashed, then wouldn't turn on. So it's possible! They mentioned taking it to a cell-phone tech place to see if they could do anything as they have better tools to help fix things. Dunno what that would do to the warranty. The tech guys did say they dont carry any spare parts or batteries for the V10 because it never has a problem. I told them that there is a rash going around and they might see it soon.
I did notice that the colder i kept the phone, the more of a chance that it would *at least* turn on, before crashing. So at least there is hope...somewhere. Hoping a new battery will help maybe, even though it seems to be a hardware issue.
How's your luck @jjall?
downstat said:
My guys said they could not do anything, but as I was playing with the phone, it magically came to life! I was in the process of moving all the photos to the microsd, then it froze, crashed, then wouldn't turn on. So it's possible! They mentioned taking it to a cell-phone tech place to see if they could do anything as they have better tools to help fix things. Dunno what that would do to the warranty. The tech guys did say they dont carry any spare parts or batteries for the V10 because it never has a problem. I told them that there is a rash going around and they might see it soon.
I did notice that the colder i kept the phone, the more of a chance that it would *at least* turn on, before crashing. So at least there is hope...somewhere. Hoping a new battery will help maybe, even though it seems to be a hardware issue.
How's your luck @jjall?
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Actually, i just got home and I decided to try out to see if it worked. I got the 0% battery sign. Plugged it in and it actually seems to be charging! So i'm hopeful. I also noticed that my phone has been getting hot lately. And that my battery life was crap. But that's just LG. I talked to an ATT customer service rep. and they told me that I could have the camera lens replaced so that my phone would be covered for an exchange. Even if it turns on, i'm going to exchange it just as soon as save all my files. Hopefully they'll take it now that it's working....
EDIT
it decided to turn on while it was charging. Froze on booting screen. It was HOT. Like I almost dropped it.
Hmm, I was going to say "CONGRATS!" but sorry. Did the battery get hot or did the phone itself get hot? Feels like mine is getting hot at or near where the led flash is. Gonna let it stay in this LG welcome screen for a bit and find out. I'm wondering if a new battery would help, but I have to wait until the 19th though before my replacement shows up.
Also, were you playing Pokemon go before? Wondering if that is what started this all.
Hello!
So the same thing happened to me. I was not playing any games on my phone. I had JUST clocked out of work using an application on my phone and sent a text. It has turned off on its own and didn't want to even turn back on. I removed the battery and set it back in.. it turned on to the LG screen and stayed until it blacked out again shortly after.
Same issue with TMO LG V-10 here. Was using phone and it went black and shut down. Now in a loop with the LG boot screen. It tried a few times then just goes black.
Well I just got my replacement and the new battery didn't do anything to help the broken phone. Guess I am going to lose some important pictures. I have a few days to keep on trying before I have to send it back to AT&T. Interesting this is happening to a few people all around the same time.
@Buzzbee21 did you notice your phone running hot at all before the shut down? Mine was running hot a lot, so maybe the heat protection is the problem.
At time yes. Not so much when it did quit. However, I left it sit on a fan and chilled it, and one time when I was able to get to the wipe screen, before it quit again, it got very hot in the afformentioned area.
Less than a year old. Getting a warranty replacement, but still disappointed as I think having the replaceable battery and abiltiy to put a large Micro SD card in it, along with the finish, camera, and Audio make the V10 one of the nicest phones out there.
downstat said:
Well I just got my replacement and the new battery didn't do anything to help the broken phone. Guess I am going to lose some important pictures. I have a few days to keep on trying before I have to send it back to AT&T. Interesting this is happening to a few people all around the same time.
@Buzzbee21 did you notice your phone running hot at all before the shut down? Mine was running hot a lot, so maybe the heat protection is the problem.
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this may sound weird but the same thing happen to me.... put the phone in the freezer for a while then boot it up but be prepared to get your pics, music, etc off of it quick... mine works fine until it warms up to room temp, then back in the freezer it goes to do it again... did it like 4 times today and saved over 1600 pics, bunch of videos and music. (saved them to a mircoSD card)
Wow. This happened to me last night, and I thought it was the weirdest thing. I wasn't even using my phone. It was sitting on my dinner table, and I noticed the screen on with the LG logo. I went over and picked it up. It stayed on the logo a few minutes, so I took the battery out. Then I turned it on, nothing but LG screen. I kept messing with it with a combination of Power/volume down and finally got it to come on to my home screen. It worked for about five minutes before being wonky again. I took the batter out all night. I'm hoping that I can get it to come on again today (I've tried 10 times and not been able to) so that I can make sure the developer options is checked, then I can hook it to the computer and mess around with it.
Thanks for this thread. It seems most of us just started having this issue in August. I'm planning on getting the V20 next month, but I need this one to last until then. haha Please keep us updated if anyone figures anything out and I will do the same.
Slight Update
SoIDecidedTo said:
Wow. This happened to me last night, and I thought it was the weirdest thing. I wasn't even using my phone. It was sitting on my dinner table, and I noticed the screen on with the LG logo. I went over and picked it up. It stayed on the logo a few minutes, so I took the battery out. Then I turned it on, nothing but LG screen. I kept messing with it with a combination of Power/volume down and finally got it to come on to my home screen. It worked for about five minutes before being wonky again. I took the batter out all night. I'm hoping that I can get it to come on again today (I've tried 10 times and not been able to) so that I can make sure the developer options is checked, then I can hook it to the computer and mess around with it.
Thanks for this thread. It seems most of us just started having this issue in August. I'm planning on getting the V20 next month, but I need this one to last until then. haha Please keep us updated if anyone figures anything out and I will do the same.
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SO, not saying this will help anything but, after messing around with the phone for several hours I've learned this:
If you take the battery out, then plug it into your laptop, then turn it on: a battery icon will pop up with a ? on it.
From there, if you hold down the VOLUME down key, and insert the battery, it will take you into the quick boot menu automatically. Unfortunately I never set that up, and not it will not allow me to set it up. I assumed I could get to safe mode from there. This is the first time I've seen where I would have to "set up" the quick boot menu. This is my first LG phone though. I usually use HTC, or MOTO.
Now, the more interesting thing is, begin as I did last time.
Phone off, battery out, plug into computer, power on. Then hold the UP volume key as you insert the battery and it will take you to your "Tethering" option. So for most of you that have this problem, maybe you will be able to get the data to back it up. Unfortunately for me, it tells me I have to do a Firmware update first, and to not unplug the USB connection until it is complete. If your firmware is up to date, maybe it will allow you to do back up (I thought my firmware was up to date, but guess not).
I hope this helps someone, and I do hope that someone can build on what I've done so far so we can figure out how to at least get our data off the phone.
downstat said:
Hmm, I was going to say "CONGRATS!" but sorry. Did the battery get hot or did the phone itself get hot? Feels like mine is getting hot at or near where the led flash is. Gonna let it stay in this LG welcome screen for a bit and find out. I'm wondering if a new battery would help, but I have to wait until the 19th though before my replacement shows up.
Also, were you playing Pokemon go before? Wondering if that is what started this all.
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The phone got hot. It was getting hot starting from around the power buttons. And it sometimes got hot before i downloaded pokemon go. Not as often, but it happened from time to time. I think it might be because i'm no longer using the original power usb cable.... idk. Just waiting for a replacement.
Can you say the first 3 digits of the serial number of the device to boot loop problem?

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