Do I need a new battery? - T-Mobile Galaxy Note 4 Q&A, Help & Troubleshooting

Basically, I have been on Tek rom forever upgrading correctly as needed. Jus recently went to Marshmallow and Maximum Overdrives latest but noticed every so often my phone will act crazy. (lagging, freezing while screens off, and sometimes it'll place itself into download mode if the battery is too low and the error on the download mode will read (couldn't do normal boot)
If anyone is familiar, I'd like to know if it's as simple as a new battery or am I experiencing some kind of hardware failure?
Sent from my LG-V521 using Tapatalk

d3athb4dishonor said:
Basically, I have been on Tek rom forever upgrading correctly as needed. Jus recently went to Marshmallow and Maximum Overdrives latest but noticed every so often my phone will act crazy. (lagging, freezing while screens off, and sometimes it'll place itself into download mode if the battery is too low and the error on the download mode will read (couldn't do normal boot)
If anyone is familiar, I'd like to know if it's as simple as a new battery or am I experiencing some kind of hardware failure?
Sent from my LG-V521 using Tapatalk
Click to expand...
Click to collapse
Ooh. I've experienced this once or twice. You may just need a good Wipe of all on the phone and then for good measure do a fresh ODIN. That's what I did and all it well. But YMMV as always.

This isn't a battery related issue. However, having a spare battery never hurts.

Related

Nexus One charging at 106F ~Froyo

my nexus one is charging on a regular basis around 106-7 F. I know there is another thread about this issue but the question was not resolved. So does anyone have experience with this issue. Is it a defect or dangerous? I have OSmonitor installed, this si where I am reading my temps. I also notice the CPU usage is pegged around 98-99%..is this normal?
I heard using setCPU with a charging profile can solve this problem if you have root?
No, it is not normal for the cpu to be maxed out while charging. Are you using the car dock or a wall charger?
nexous one
mine does the same thing all the time its not going to damage your phone at all
my phone has got about 120 F on car doc
my phone is perfect just set your set cpu for fail safe and your all good
You probably could use SetCPU to solve this problem, but the fact that your CPU usage is so high in the first place means there is something going wrong - my guess would be a rogue app.
Try downloading a task killer from the Market. Kill each app running one at a time then check your CPU usage. You'll soon find the culprit.
sn95chico said:
my phone has got about 120 F on car doc
Click to expand...
Click to collapse
Yeah I'm starting to see the problem with the phone having a metal casing. Not good when it's summer and you have to place it under direct sunlight for extended amounts of time, while using navigation AND charging
That thing can get burning hot alright.
Are you using froyo 2.2?
I have had the same problem; I also have random periods of high cpu use when not charging as well. This issue is not caused by problem apps either. I must reboot to fix the issue, sometimes I must reboot several times until the cpu load is back to normal.
I am not sure it is a bug or a hardware fault. Maybe a quick call to HTC and/or google is in order.
I will also try to reapply the 2.2 update.
Marine6680 said:
I am not sure it is a bug or a hardware fault. Maybe a quick call to HTC and/or google is in order.
Click to expand...
Click to collapse
Been there, done that. I opened a thread asking other users about the problem, and even mailed HTC's support. In the end I decided to try flashing the stock 2.1 rom again to see if the problem persisted, and it didn't.
I'm pretty sure it's not a hardware problem, but you might want to install eclair too and see if it works for you.
frandavid100 said:
Been there, done that. I opened a thread asking other users about the problem, and even mailed HTC's support. In the end I decided to try flashing the stock 2.1 rom again to see if the problem persisted, and it didn't.
I'm pretty sure it's not a hardware problem, but you might want to install eclair too and see if it works for you.
Click to expand...
Click to collapse
I bet your heat issues are related to cpu loads or staying at high frequencies like mine. Sometimes the phone does not feel like it is really running as hard as the system monitors say, though it may still get hot.
Where can I find the older ROM? I thought the bootloader would not allow going to older ROMs, or maybe I am mistaken.
I am re-flashing the leaked 2.2 update to make sure there was no issue with the original install. I am also using the copy my GF downloaded when I sent her the instructions on the off chance that my download was corrupted in some small way; unlikely but hey. I do think that the original flash may have gone wrong, as mine hung and never rebooted after the flash was complete; I had to manually reboot. Lets hope this fixes it.
This issue may be more widespread than we realize, as many people do not actively monitor their cpu or notice/worry about the heat after charging. I do believe that these leaked ROMs send debug data to google, I remember reading something along those lines; these are internal test ROMs after all. Maybe this is a reason that 2.2 is not out yet, this and other bugs found during real world use.
Marine6680 said:
Where can I find the older ROM? I thought the bootloader would not allow going to older ROMs, or maybe I am mistaken.
Click to expand...
Click to collapse
What I did was follow this guide up to the point where you have a stock eclair rom, then not upgrade to Froyo. Keep using that for some time, see whether the phone gets hot or not, THEN (if you want) move back to Froyo.
I am using the wall charger hat came with the nexus one. I am also running Froyo 2.2... can I set a CPU fail safe without my phone being rooted? Also what is a quick to check if my phone is rooted? I just bought this Nexus One from someone. I know on my G1 it was rooted bc I had Superuser permissions.
Using OSmonitor I can sort the processes by their CPU load and the one process that always has the highest load is " /init" which always has around 85-96% of the load. You can also kill these processes directly inside of OSmonitor and I have tried killing " /init" to no avail.
The fastest way I can think would be installing Lamppu, then trying to use it to light up the camera flash. If it works your phone is flashed, if it doesn't it's not.
As for your other questions... sorry, i don't know. I hope someone else can help you.
foethalove said:
Using OSmonitor I can sort the processes by their CPU load and the one process that always has the highest load is " /init" which always has around 85-96% of the load. You can also kill these processes directly inside of OSmonitor and I have tried killing " /init" to no avail.
Click to expand...
Click to collapse
Thats a system process so you can not kill it.
Going to test my GFs nexus and see if she has these issues as well.
I restored my N1 to the factory image, the updated back through each update to 2.2; so far so good. My GF's N1 has been running fine since I really started watching it, so I figured it would hurt to try to restore and redo the update.
No 100% cpu load during charging any more!
i am using the Motorola charger and my phone is not getting hot at all. with the charger that comes in the box for the N1 it seems to heat up.
Still had the CPU load get stuck at 100% today; though charging is not forcing 100% loads any more.
By the way, how do you measure how busy the processor is? How do you know that it's at 100%?
frandavid100 said:
By the way, how do you measure how busy the processor is? How do you know that it's at 100%?
Click to expand...
Click to collapse
System monitor apps, some will even put a little icon in the notification tray that shows current cpu load.

Just want to figure out the reason of black screen freeze, it makes me crazy

Well, to tell the truth, I like this phone. Dual-core CPU, perfect screen, HDMI output etc.
But as soon as I get this phone, I found it cannot be wake up from sleep.
I heard that LG has released a update software to fix this problem, but after I had connected my phone to the computer and opened the LGMobile Update, it told me there was no newer update available.
So I'm trying to figure out the reason of this problem.
This problem does not happened every time when I push the ON/OFF button to put the phone to the sleep mode. If I just reboot the phone, and then turn off the screen, there will never be any trouble, even I put it on the desk for the whole night.
But if some programs has been run, like the games, map, internet browser, or even a call or SMS, then lock the screen, it will never wake up. Or if I plug in the charger or connect the phone to the computer, it works great with no trouble.
What's more, after the phone has 'dead', the temperature of the phone became high, and even became higher and higher, very strange.
So I try these way to solve the problem with no success:
-replace the battery with another one.
-wipe the battery information by using ClockworkMod and then re-calibrate the battery.
-flash a different version ROM, including MCR ROM and LG Stock ROM.
-flash a different version baseband.
-force the CPU frequency to stay in 800Mhz by using 'pimp my CPU'.
-lower the voltage of the CPU.
-forced the frequency to stay about 400Mhz when the screen is locked.
-remove any applications installed by myself.
-disallow any background applications.
-put the phone in the rom with air conditioner turning on which the air temperature is about 25°c.
Then I guess this problem is caused by power management bug.
There will never be any problem when the phone is awake, or the charger is plugged in, so I don't think it's a hardware bug.
Must be a bad unit. :-(
Sent from my LG-P990 using Tapatalk
As I said before.
When you press power button to wake-up the screen, and the screen is black (bsod), press power button again (so it would power off the screen, even tho the screen is black), count till 20/30sec and press power button again....
There yoy go, phone working again!
Ive overwon my bsod since I know this trick!
Sent from my LG-P990 using XDA App
Nfsking: Did it work?
Sent from my LG-P990 using Tapatalk
Sckank said:
Nfsking: Did it work?
Sent from my LG-P990 using Tapatalk
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Click to collapse
No, no work.
Now, after playing games or using Google Map, I must turn off the phone, and then turn it on again to avoid this issue.
OK, now I can almost confirm that this issue is caused by overheat.
I boot the phone, then put it on the desk without any operation, it will remain OK.
Then I put it into my jeans pocket for about 1~2 minutes, it will be dead.
Again, after playing games, I put the phone just near the air conditioner, it will be cooled down very soon, and the issue will not happen.
So, is there any way to make the ‘temperature protection’ or something like that higher? Or just remove it from the Android OS.
I don't think removing any sort of temp failsafe would be a good idea.
I just had a bsod and the phone was really hot. If anything, it needs a proper failsafe put in, so it at least reboots in stead of hanging on the black screen
Sent from my LG-P990 using XDA App
I had a phone with the usual reboots and charge-bugs like everybody else. I shan't claim I've found a 100% solution, but what I can say is that my phone never reboots/bsods anymore, on stock ROM, MCR or CM7. It does get hot to the touch when it's working hard or charging, but still operates reliably.
There are several version of the basebands floating around. Not only are there different versions (02.18, 02.23, 03.15, .04.05, 05.02), but more importantly, there are different versions of the same version-number as well.
I downloaded three original ROMs from the thread here on XDA, all of them including the 04.05 baseband... and all the baseband-files were different.
As you know, if you're already on 0405 or higher, you can't upgrade through the LG update tool, as it claims you're already updated. So to make sure I had the latest "official" baseband I installed a 10a version (baseband 02.18). This allowed me to upgrade through the LG-tool. I still got an 0405-baseband, but... not had a single reboot since, and I've tried every ROM out there. (Am now back on stock waiting for CM7 to become polished.)
So to the ones out there who still suffer reboots, try to smartflash back to and old version, then upgrade via the LG-tool, it worked for me.
(This could of course be entirely coincidental, my phone may just have spontaneously "healed", but it's unlikely.)
::Trym
TrymHansen said:
I had a phone with the usual reboots and charge-bugs like everybody else. I shan't claim I've found a 100% solution, but what I can say is that my phone never reboots/bsods anymore, on stock ROM, MCR or CM7. It does get hot to the touch when it's working hard or charging, but still operates reliably.
There are several version of the basebands floating around. Not only are there different versions (02.18, 02.23, 03.15, .04.05, 05.02), but more importantly, there are different versions of the same version-number as well.
I downloaded three original ROMs from the thread here on XDA, all of them including the 04.05 baseband... and all the baseband-files were different.
As you know, if you're already on 0405 or higher, you can't upgrade through the LG update tool, as it claims you're already updated. So to make sure I had the latest "official" baseband I installed a 10a version (baseband 02.18). This allowed me to upgrade through the LG-tool. I still got an 0405-baseband, but... not had a single reboot since, and I've tried every ROM out there. (Am now back on stock waiting for CM7 to become polished.)
So to the ones out there who still suffer reboots, try to smartflash back to and old version, then upgrade via the LG-tool, it worked for me.
(This could of course be entirely coincidental, my phone may just have spontaneously "healed", but it's unlikely.)
::Trym
Click to expand...
Click to collapse
Thanks for reply dude.
But I've tried almost every version of baseband and rom already.
I'm from China, newest version of baseband I got is V10S, which is a Korean version, and the newest Chinese version is V10K. I have tried to flash the phone back to V10A - a European version ROM, and then update the phone using LG Mobile Update software to V10D, and this did no help to the issue.
As I said, this problem always happen when the temperature of the phone is high. I'm not sure whether the CPU/GPU temperature or the battery temperature will cause this issue (I prefer to believe it's because of the battery temperature, cuz the Google Map won't use too much CPU and GPU resource)
Another interesting thing I found, is that if I leave the music playing in background, then lock the screen, the phone will never meet any issue.
So now, my solution is to avoid the high temperature, or playing the music in background, muted, and then lock the screen. This may drain the battery faster, but at least I will never miss any call.

CPU small cores do not stop, big cores not working

So, my issue is as the title shows.
The A53 cores do not stop, and A57 cores only work like 0-1 core at a time, usually doing nothing.
Which causes my phone to be heating up whenever it isn't sleeping, sometimes drains battery even when charging at 2A.
I'm using E6533(dual sim version), and it happened when I updated my phone to 7.1.1(32.4.A.0.160) from 7.0.0(32.3.A.2.33) firmware with flashtool.
Yes, I've rooted my phone, but just for removing shutter sounds.
I tried to rollback to my TWRP backup, factory reset, rollback to 32.2.A.0.305, using custom ROM(lineage), quite everything I know, but nothing worked.
Does anyone have a clue of what might be the problem, and what might work?
Thank you.
baconbeacon said:
So, my issue is as the title shows.
The A53 cores do not stop, and A57 cores only work like 0-1 core at a time, usually doing nothing.
Which causes my phone to be heating up whenever it isn't sleeping, sometimes drains battery even when charging at 2A.
I'm using E6533(dual sim version), and it happened when I updated my phone to 7.1.1(32.4.A.0.160) from 7.0.0(32.3.A.2.33) firmware with flashtool.
Yes, I've rooted my phone, but just for removing shutter sounds.
I tried to rollback to my TWRP backup, factory reset, rollback to 32.2.A.0.305, using custom ROM(lineage), quite everything I know, but nothing worked.
Does anyone have a clue of what might be the problem, and what might work?
Thank you.
Click to expand...
Click to collapse
did u tryed to install a custom rom? or a stock but flashing a kernel?
op3n said:
did u tryed to install a custom rom? or a stock but flashing a kernel?
Click to expand...
Click to collapse
I was using stock ROM, but while trying to fix the issue, I've tried custom ROM too. Though nothing has changed…
baconbeacon said:
I was using stock ROM, but while trying to fix the issue, I've tried custom ROM too. Though nothing has changed…
Click to expand...
Click to collapse
i think is normaly to run even 1 cpu. to me is working permanently 2 - 2 from big, and 4 from little and battery is ok. is normaly to bicom hot our *****es z4; u want to say is permanently hot even is in standby or blabla?
op3n said:
i think is normaly to run even 1 cpu. to me is working permanently 2 - 2 from big, and 4 from little and battery is ok. is normaly to bicom hot our *****es z4; u want to say is permanently hot even is in standby or blabla?
Click to expand...
Click to collapse
Well, if that's normal, this shouldn't be an issue. Though I do wonder where's the big little concept gone.
Did it ever occur to you guys that it might be dynamic hotplugging and a specific configuration/setup is being used ?
Or is it in your case really being buggy and broken ?
You left something working in the background and monitored how the cores behaved ?
Using different apps ? (say: kernel adiutor [or kernel adiutor mod], EX Kernel Manager, CPU Z, etc.)
My situation has improved, so I'll update my situation, hopefully it'll help someone.
After updating to stock 7.1.1(without modifications), my phone got just very hot while the screen was on., consuming more than 2A.
Rolling back did solve the problem(becomes normal heat), but as for me, I chose to use lineage OS, which was great. The only drawback I'm having now is that the camera button's function isn't as versatile as the stock ROM, especially while opening the camera app from sleep state, is a bit unstable.
A great thanks for all of you guys for giving me advices.
My situation has improved, so I'll update my situation, hopefully it'll help someone.
After updating to stock 7.1.1(without modifications), my phone got just very hot while the screen was on., consuming more than 2A.
Rolling back did solve the problem(becomes normal heat), but as for me, I chose to use lineage OS, which was great. The only drawback I'm having now is that the camera button's function isn't as versatile as the stock ROM, especially while opening the camera app from sleep state, is a bit unstable.
A great thanks for all of you guys for giving me advices.

N950U Shutting Down - CPU Usage Maxes Out

I am out of things to try on this thing, I bought it used in February and ever since upgrading to Pie the phone will beginning shutting down during use, even while only watching youtube. Something is causing the cores to ramp up to 100%, it begins to warm up but not overheat and then shuts down usually around 70c I believe, no overheating message just straight cuts power. The only way to get it to power back on is to cool it down in front of a fan or car AC for a minute or so, then it will stay on and I can watch the CPU usage drop after a few minutes and then I can use it again. I have factory reset, cleared cash but the issue remains. As Android no longer allows seeing what is using CPU I have no way of trying to figure this out further. Any ideas?
Have you tried to flash firmware with Odin? Save all your important stuff to sd card, do a complete wipe..dalvik.. system..data..and cache. Flash firmware in odin BL,AP,CP,CSC
Sent from my SM-A205G using Tapatalk
butchieboy said:
Have you tried to flash firmware with Odin? Save all your important stuff to sd card, do a complete wipe..dalvik.. system..data..and cache. Flash firmware in odin BL,AP,CP,CSC
Sent from my SM-A205G using Tapatalk
Click to expand...
Click to collapse
I havent tried this, kind of terrifies me. I have touched firmware since my S3. lol kind of afraid it might shut down while doing this and brick it
butchieboy said:
Have you tried to flash firmware with Odin? Save all your important stuff to sd card, do a complete wipe..dalvik.. system..data..and cache. Flash firmware in odin BL,AP,CP,CSC
Click to expand...
Click to collapse
Can anyone clarify if my device will brick if it shuts down while flashing firmware? Im getting desperate enough to want to try but I can't afford to replace the phone right now if it bricks.
drosenberg85 said:
Can anyone clarify if my device will brick if it shuts down while flashing firmware? Im getting desperate enough to want to try but I can't afford to replace the phone right now if it bricks.
Click to expand...
Click to collapse
No it shouldn't brick it. It'll just take you to a screen that says the update failed and on that same screen you try to flash it again. In order to try to avoid that from happening can't you do it in front of a fan or something blowing air at the back of the phone to keep it cool? I really don't think it'll be doing so much with the CPU to cause it to do that but just in case use a fan or something.
MrMike2182 said:
No it shouldn't brick it. It'll just take you to a screen that says the update failed and on that same screen you try to flash it again. In order to try to avoid that from happening can't you do it in front of a fan or something blowing air at the back of the phone to keep it cool? I really don't think it'll be doing so much with the CPU to cause it to do that but just in case use a fan or something.
Click to expand...
Click to collapse
Its not so much something I'm running that's causing the CPU usage, it happens even if only chrome or YouTube is open. I can go days without it happening , or somedays it's worse, 3 times today and the last time was the worst, it took 20 minutes to get it back. Sometimes turning off halfway through the Samsung logo. There's no overheat warning,CPU can be in the low 70s and it happens. Shutting off during the Samsung logo, could it even be the firmware? Is the battery a possibility?
drosenberg85 said:
Its not so much something I'm running that's causing the CPU usage, it happens even if only chrome or YouTube is open. I can go days without it happening , or somedays it's worse, 3 times today and the last time was the worst, it took 20 minutes to get it back. Sometimes turning off halfway through the Samsung logo. There's no overheat warning,CPU can be in the low 70s and it happens. Shutting off during the Samsung logo, could it even be the firmware? Is the battery a possibility?
Click to expand...
Click to collapse
I would say if there's no update to the apps that are causing the problem then go into the app and uninstall the update by just uninstalling the app. See if that stops it. I don't think a battery would cause an overheating problem with the CPU but the battery itself could overheat causing the phone to shutdown but it wouldn't have any effect on the CPU like you're having so it has to either be the app itself the firmware or the CPU is having a problem.
MrMike2182 said:
I would say if there's no update to the apps that are causing the problem then go into the app and uninstall the update by just uninstalling the app. See if that stops it. I don't think a battery would cause an overheating problem with the CPU but the battery itself could overheat causing the phone to shutdown but it wouldn't have any effect on the CPU like you're having so it has to either be the app itself the firmware or the CPU is having a problem.
Click to expand...
Click to collapse
That's the thing, neither the battery or the cpu get overly hot, phone gets slightly warm to the touch but around 70c doesn't seem like overheating to me. I have no idea what app,.if it is an app causing it. Thanks to android 9 there's no way to tell what's eating cpu. My monitoring apps only show they are maxing out. My concern with the battery is that maybe it's a voltage issue, maybe it can't keep up the all the cores maxing out
drosenberg85 said:
That's the thing, neither the battery or the cpu get overly hot, phone gets slightly warm to the touch but around 70c doesn't seem like overheating to me. I have no idea what app,.if it is an app causing it. Thanks to android 9 there's no way to tell what's eating cpu. My monitoring apps only show they are maxing out. My concern with the battery is that maybe it's a voltage issue, maybe it can't keep up the all the cores maxing out
Click to expand...
Click to collapse
Well for the Note 8 70c (158F) is a bit too hot for normal operating temperature. I read that someone's hasn't gone above 50c (122F) with normal usage for over 2 weeks so there's definitely something contributing to that. Do you have a ton of apps and stuff on the phone where it has to constantly check all kinds of stuff? Can you do dialer codes? Like *#9900# to run a dumpstate/logcat and then copy it to your SD card to read through it and see if anything seems out of order? It's huge just so you know..
butchieboy said:
Have you tried to flash firmware with Odin? Save all your important stuff to sd card, do a complete wipe..dalvik.. system..data..and cache. Flash firmware in odin BL,AP,CP,CSC
Sent from my SM-A205G using Tapatalk
Click to expand...
Click to collapse
Happy Thanksgiving bro!
Same to you bro
Sent from my SM-A205G using Tapatalk
MrMike2182 said:
Well for the Note 8 70c (158F) is a bit too hot for normal operating temperature. I read that someone's hasn't gone above 50c (122F) with normal usage for over 2 weeks so there's definitely something contributing to that. Do you have a ton of apps and stuff on the phone where it has to constantly check all kinds of stuff? Can you do dialer codes? Like *#9900# to run a dumpstate/logcat and then copy it to your SD card to read through it and see if anything seems out of order? It's huge just so you know..
Click to expand...
Click to collapse
I'm around 55 to 60c with normal use, but when the cores ram up it can get high 70s, but no overheating message, I dont run many apps, mostly games but I ran a factory reset and uninstalled a bunch of stuff still no go. I just happened again, I ran the dump and saved the log, I'll try and look at it tonight on my computer but have no idea what I'm looking for lol
drosenberg85 said:
I'm around 55 to 60c with normal use, but when the cores ram up it can get high 70s, but no overheating message, I dont run many apps, mostly games but I ran a factory reset and uninstalled a bunch of stuff still no go. I just happened again, I ran the dump and saved the log, I'll try and look at it tonight on my computer but have no idea what I'm looking for lol
Click to expand...
Click to collapse
Starting to seem like it's either a hardware issue or the firmware you're using. Have you tried using a different firmware version as long as it's the same bootloader version?
MrMike2182 said:
Starting to seem like it's either a hardware issue or the firmware you're using. Have you tried using a different firmware version as long as it's the same bootloader version?
Click to expand...
Click to collapse
Not yet, I downloaded the same firmware version I have and was gonna try as a last resort, currently on
N950USQS6DSI3. Had no issues until I believe I updated to pie, lol
drosenberg85 said:
Not yet, I downloaded the same firmware version I have and was gonna try as a last resort, currently on
N950USQS6DSI3. Had no issues until I believe I updated to pie, lol
Click to expand...
Click to collapse
Then get away from that version just go back one lol.
MrMike2182 said:
Then get away from that version just go back one lol.
Click to expand...
Click to collapse
So an update and some more questions. I ran a few factory resets and the phone shut down during initial OS setup, had to put it in the freezer. I have done a firmware flash yet as I was finally able to reproduce the issue multiple times. I ran a cpu stress test and as soon as it gets in the mid to high 80s it shuts down, did it 3 times. Shouldn't there be a warning and shouldn't it throttle? It seems to be the temp sensor on one core, I'm not sure how accurate these. I attached a screenshot, the circled core is the one that spikes in temp causing the shutdown. I think I'm looking at a hardware failure maybe?
drosenberg85 said:
So an update and some more questions. I ran a few factory resets and the phone shut down during initial OS setup, had to put it in the freezer. I have done a firmware flash yet as I was finally able to reproduce the issue multiple times. I ran a cpu stress test and as soon as it gets in the mid to high 80s it shuts down, did it 3 times. Shouldn't there be a warning and shouldn't it throttle? It seems to be the temp sensor on one core, I'm not sure how accurate these. I attached a screenshot, the circled core is the one that spikes in temp causing the shutdown. I think I'm looking at a hardware failure maybe?
Click to expand...
Click to collapse
Yep definitely hardware! You need a new phone or board!

[solved] [SM-T813] Random Reboots. Works for days then for not even a minute

Hi,
first of all sorry for my bad english and screenshots with german text .
The situation:
I have a total of two Tab S2 (T-813). The first is 4 years old, the second is less than 2 years old. The newer is now causing problems.
The reboots occur:
- When using the tablet. Definitely with a high load, but also sometimes with only light loads
- When it is charging
- completely random
Edit1: reboots are not related to the battery percentage
Edit2: never experienced a reboot while in TWRP.
I didn't really find anyone with the same problem on the Internet. It is not a boot loop. Sometimes you can use the tablet for hours/ days. Then again not at all, because it starts again after a minute. To narrow down the problem, I formatted both tablets and installed the same lineage version and firmware. Since it restarts, log files are unusable, right?
Is there any way to narrow down the error?
I suspect overheating, but I would like to know if I have any way to isolate the fault exactly. Maybe there is also another (hardware) forum, which can help better in this case, then I would also be grateful for a tip.
I would have no problem opening the tablet. I've already done this with my smartphones.
Thx for your time.
Solution:
It is an overheating problem if you have exactly the same problems as I had.
You can test it simply like this: fill a plastic bag with cold water and some icecubes. Use it like a pillow for your tablet so it can rest on the bag while you use it. I had no problems at all while doing this.
I send it to Samsung and they repaired it.
It's just as new now.
I actually have the same problem, just only when its at 15 or less battery
Hi.
Well, it sounds for me like a different problem, cause it's battery related. My battery is fine and I have reboots not related to battery status.
Have you tried anything (factory reset, newest lineage and firmware,...)?
Hi,
same here. A SM-T813 running LineageOS that started with random freezes and reboots about a week ago. Sometimes I can use it for about half an hour without problems, next time it reboots while rebooting ...
Seems to be completly random, only thing I noticed that it never reboots while in TWRP.
Cleared and reinstalled LineageOS, but didn't change anything. First time rebooted while still in the setup wizard, next time I could finish the wizard and install serveral apps before the next reboot.
Maybe a problem with the memory?
Yes, that is exactly the same.
I never experienced a reboot in TWRP. No problem with reinstalling lineage.
But while reinstalling Android, it reboots while configuring and while reinstalling apps.
The last days I could watch Amazon prime every evening. Now it reboots after a minute even without using it. I shut it off and hope it will work this evening again.
I have the same issue, sent it in for repair asked to flip battery and swap mainboard. Got it back. Worked a few days, then had random reboots again. I am 100% sure it is a battery issue, and when you get under a specific voltage, maybe when it gets under 30% or so, the chance for reboots rise dramatically, with high cpu or flash memory usage. It happens more often when doing a update in Google Play store for example. So totally have no idea, if Samsung flipped the battery or not, but this was my last Samsung product ever. I would assume there is an issue with too much current drain and then it reboots, and the battery used in them are not designed for the units properly.
same to me. i was on stock rom. never root or anything. and got random reboots most of them when i open google play or google chrome. now im on lineage and same. also i notice that the tablet didnt reboot until i install gapps. and the tablet never reboot on recovery or TWSR. reboots on high or low battery. and if it was overheating maybe the tablet will reboot on recovery. dont know its weird. i will try lineage with out gapps to see what happend.
just testing lineage without gapps no reboot. run browser and netflix with no problems. then i install youtube from aptoid store. and reboot start again. o unistall youtube and no reboot for now.
Same here. I have random reboots but also wifi disconnections (unable to reconnect until i reboot the device)...
Not evident cause...
Someone got a solution for this?
Have the same problem on my T813
You can find the solution for the problem I described at the end of the first post.

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