Random freezing and restarts - Galaxy Tab S Q&A, Help & Troubleshooting

Since installing lollipop on my T800 I am experiencing some random freezes and at other times random restarts. Not all the time maybe once a night.
Anyone have any experience of this and what possible solution there is?

Yes...
Same issue here.
Random freezing and restarts after flickering of screen...
Thanks...
-Ahmed-

It's the thermal shut down. I have the tab style 10.5 s t807t. It can get pretty hot when gaming. Once it hits about 85 to 90 degrees it restarts. Kind of looks like a freeze first then a restart. I just let it cool down and come back later. That has been my experience. Sucks, but that's what I have figured out. Also I don't recommend increasing the thermal limit to prevent the restart. Like I said this thing gets pretty hot, I wouldn't recommend pushing it. I have the t-mobile lte version with the exynos processor.

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[Q] Galaxy Note 2 overheating ??

Just thought I'd throw this out to see if anyone else has encountered this problem. Yesterday I was using some apps on my Note 2 (TomTom, voip, wifi and 4G ...) and I noticed the top of the phone getting rather hot, to the point that it was becoming uncomfortable to hold to my ear. This was much hotter than normal. I shut down all the running apps with app manager, but the phone stayed hot. CPU was running only about 10%. Finally I had to reboot...then it was back to normal. Its worrying that it could at some time be damaged by overheating. Has anybody had this problem and/or know what might be causing it? Thanks.
i got the same problem when playing a game in 10-15 mins it heated up pretty fast especially the front near samsung logo it was like over 100 degree
The only time I experience overheating is when I'm playing Need For Speed Most Wanted. It happens after about fifteen minutes of play. I haven't had it get uncomfortably hot but I always stop playing the game as it becomes abnormally hot. It's a shame to because I would like to play NFS more that fifteen minutes.
Jerry D said:
The only time I experience overheating is when I'm paying Need For Speed Most Wanted. It happens after about fifteen minutes of play. I haven't had it get uncomfortably hot but I always stop playing the game as it becomes abnormally hot. It's a shame to because I would like to play NFS more that fifteen minutes.
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Lol that is the game I was talking
sent from t889 running jedix8
dandn0ten said:
Lol that is the game I was talking
sent from t889 running jedix8
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Yes that's the same area, near the phone speaker and logo, where mine was most hot. I'm thinking it could be cpu or graphics processor but I don't know the internal layout of components. But it seems odd on mine that it stayed hot after shutting down any running apps and only 10% CPU. Maybe something running in the background.
That is where the uber powerful quad core monster is grinding the gears of awesomeness at a mind blowing brain zapping 1.6 billion gigahertz lives at. And his girlfriend mali400 lives right next door and she is pumping out all the eye candy she can to satisfy the pleasure receptor s directly into your braiiiiiin.... Lol
In other words yes that's the main processor and graphics chip suckin up the battery. While it does that it's generating heat as a by product. It's completely normal. Nothing to worry about. Happy gaming. And it takes a while for it to cool back down to ambient.
Hope that helps
Sent from my SGH-T889 using Tapatalk 2
Meditating_Apes said:
Yes that's the same area, near the phone speaker and logo, where mine was most hot. I'm thinking it could be cpu or graphics processor but I don't know the internal layout of components. But it seems odd on mine that it stayed hot after shutting down any running apps and only 10% CPU. Maybe something running in the background.
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Did a quick net search on this and found a few forums reporting this problem. i.e. http://forums.androidcentral.com/sa...es-your-galaxy-note-ii-gt-n7100-overheat.html
I reported the overheating to Samsung Support. They said they have had no reports of the phone overheating...sounds unlikely after several months and millions of devices sold. Support suggests doing a data wipe from the recovery screen as this will "resolve most problems". Really? ???
Could be a firmware issue which Samsung will find and fix if they get sufficient number of reports. I suggest you report it to Samsung Support: http://www.samsung.com/us/support/...click on "live chat" for mobile phones.
Need for Speed is a game provided by (presumably) Samsung. If you can't play it for long, it seems like that represents some kind of inherent problem with the device. My concern is whether the overheating will be an ongoing, recurring problem. That would limit the usability of the device.
It's not clear if this is a problem that is worse on individual phones or if this is a problem common to all Note 2s. If its individual phones, then I'd probably like to return it for one that doesn't do this.
It seems the Exynos cpu is located near the speaker/logo. "System Tuner Pro" app reports system temperature under "CPU"
Mine is overheating while charging..I Woke up to a battery too hot message..the only thing different is I'm using a flip cover now,I took a screenshot of the temperature, and this was already cooled down a little..anybody know what this is? It's only been happening while charging though...
Sent from my SGH-T889 using xda app-developers app
Samsung Note 2 Overheating Culprit
Two specific reasons : Quad core processor, Aluminium wiring.
Reports of deformity of the note 2 trickling in slowly. Try using processor hungry tasks and see it drop its jaw in 2 hrs.
they cant recall it, now its getting cheaper every day.
Try clearing the cache, supposedly things can occasionally get discombobulated. Last time my phone was about to set fire (gs3), cleared the cache & dalvik and it went back to normal.
summer heat
arctic84 said:
Try clearing the cache, supposedly things can occasionally get discombobulated. Last time my phone was about to set fire (gs3), cleared the cache & dalvik and it went back to normal.
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I live in Chicago and summer days are already here. My Note 2 has started to let me down, since yesterday my phone is been up to 40c without any used.44 while charging. I dont think this is normal. Im on stock rom. Thank you in advanced.
Overheating persists
My 2 weeks old Galaxy Note 2 gets abnormally hot on the same area(rear camera part & the front phone calling speaker) while on charging, while playing games usually Modern Combat 4 or otherwise, & i am on stock rom as well. ...if anyone has a resolution for the problem then please share..

The heat Issue?

I am thinking to buy the phone but I saw some posts there are some heat issues. So what is the problem besides the phone getting too hot? Is it shuting down when it gets too hot or get really laggy? Is there any other problem when heated except it gets really hot?
Rupar4o said:
I am thinking to buy the phone but I saw some posts there are some heat issues. So what is the problem besides the phone getting too hot? Is it shuting down when it gets too hot or get really laggy? Is there any other problem when heated except it gets really hot?
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I haven't experienced any heat issues. I have yet to feel my g3 get warm Tbh.
Others (not sure which model) have reported issues with heat, to the point that it causes the device to throttle the brightness down. Again haven't experienced this on my at&t model.
Heisenberg420 said:
I haven't experienced any heat issues. I have yet to feel my g3 get warm Tbh.
Others (not sure which model) have reported issues with heat, to the point that it causes the device to throttle the brightness down. Again haven't experienced this on my at&t model.
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Thanks for the reply, someone with issues ?
Same here not felt it get warm even watching video.
When the phone gets hot several things happen.
1) The CPU is clocked down to help lower heat
2) Brightness is capped to help lower heat
3) If the phone continues to get too hot (usually when its already hot and you then start to play a really intense game, or benchmark the phone may shut itself down.
People complained a lot with the Korean model but I haven't seen anyone with a US model complain. Maybe the type of person that waits is less likely to be a phone gamer? They may have actually tweaked it so it doesn't activate as quickly or harshly. I do know some people disabled it on the Korean model. I haven't heard of anything bad happening but those few people may have felt dumb if it destroyed their phone and not posted that it did...
I have no heating problem with my lg g3 international D855 16gb model, even during quadrant test or playing games.
Sent from my LG-D855 using Tapatalk
Define an actual temperature for hot.
I disabled the thermal protection on my AT&T version and yes, I've felt it get quite hot while playing Final Fantasy 6. The heat radiated mainly through the metal power button but the entire top half of the device got pretty hot. Didn't bother me all that much tho, as I've had other devices get hot like that in the past.
I use exposed app CPU temp my g3 sits at about 30c and 45c which is normal temps and about 50ish whith thermal protection on disabled.
what heat issue
jutley said:
I use exposed app CPU temp my g3 sits at about 30c and 45c which is normal temps and about 50ish whith thermal protection on disabled.
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Do we have any official documentation from Qualcomm on how hot the cpu can safely be?
flaring afro said:
Do we have any official documentation from Qualcomm on how hot the cpu can safely be?
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Not sure it must be out there somewhere I am sure.
[email protected] said:
I disabled the thermal protection on my AT&T version and yes, I've felt it get quite hot while playing Final Fantasy 6. The heat radiated mainly through the metal power button but the entire top half of the device got pretty hot. Didn't bother me all that much tho, as I've had other devices get hot like that in the past.
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My girlfriend picked this up yesterday and this is happening to her G3. Not playing games though, just browsing the internet/reading an article. It makes no sense to me. How can you take control over that? She doesn't want to root the phone.
But yeah, just reading something or even looking at Facebook, the phone gets way too hot.
I picked up the Verizon version yesterday. It's gotten pretty warm around the power button a few times for me also. Typically not bad or what I would consider unusual with one or two exceptions.
My G3 (UK) go very very hot yesterday when I was on the train playing a graphically intensive game.
It shut itself down and then refused to turn on again. Ever.
I tried everything all night but no joy. I got a replacement handset today.
I'm sure it was because of the overheating that the phone malfunctioned. Without knowing exactly what has happened to it the timing is too coincidental for it to be random hardware failure. It was SUPER hot!
ShiroEd said:
My G3 (UK) go very very hot yesterday when I was on the train playing a graphically intensive game.
It shut itself down and then refused to turn on again. Ever.
I tried everything all night but no joy. I got a replacement handset today.
I'm sure it was because of the overheating that the phone malfunctioned. Without knowing exactly what has happened to it the timing is too coincidental for it to be random hardware failure. It was SUPER hot!
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This is strange. Does the kernel not shut the phone down before it "fries" the SOC?,unless the throttling temps are too high? Wonder if this is linked to the display flickering problem myself and another poster had.
Batfink33 said:
This is strange. Does the kernel not shut the phone down before it "fries" the SOC?,unless the throttling temps are too high? Wonder if this is linked to the display flickering problem myself and another poster had.
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Funny you mention display flickering. I had that about 2 weeks ago. The display started flickering really badly, like nothing I've ever seen on any Android device, and I needed to pull the battery to reset. It didn't boot straight away either, it had to cool down a bit.
mrhaley30705 said:
Define an actual temperature for hot.
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this.
all phones get warm if you are on it for an extended period of time, surfing (using data), gaming etc etc screen on for long periods of time. those saying they can game and not have heat are lying to you. phone gets warm when screen is on for extended period of time and by phone I mean any phone
ShiroEd said:
Funny you mention display flickering. I had that about 2 weeks ago. The display started flickering really badly, like nothing I've ever seen on any Android device, and I needed to pull the battery to reset. It didn't boot straight away either, it had to cool down a bit.
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Yeah, i had a flickering display which didnt go away.I returned that phone. Another poster yesterday had the same issue.Im wondering if the GPU is frying itself? Although the GPU does throttle as well as the CPU. Running Antutu I would get 60+deg C maybe playing a game for an extended period of time for example is causing damage? Just a theory.

[Q] SM-T320 Restarting without root.

I just noticed that sometimes when my tab is on low battery and I keep on playing games, it suddenly reboot and reboot 2-4 times before it goes back to the home screen and settle there. What seems to be the problem? I had experienced this issue last year, maybe November then it happened again this time.
Did your issue ever get fixed?
I also have a stock sm-t320 and it does the same thing. I think it might be a tablet issue as I might be overheating, although it doesn't feel warm.
Mine randomly reboots and then the battery percentage acts goofy, going up and down. It also happens when intense games are being played like mnecraft. I think I might just send mine in to Sammy to see if they can fix it before my warranty is up.
solve your problem replace the batteries.

LG G4 overheating and rebooting while gaming...

Yo guys,
I have my LG G4 since a while but this problem is really annoying me.
Had two LG G4 and they all did the same.
I litterally can't play any games because of that. While i'm playing 90% of the games that are available on the playstore, my CPU is overheating and i feel my LG G4 becoming so hot in my hands.
Then after a few minutes everything is freezing for 2-3 seconds and then the phone is rebooting.
Can you guys play Asphalt 8 or Arrow.io without rebooting after a few minutes? it's really annoying.
I would like to know how can i fix that? Do i need to root my phone and Underclock the CPU?
I really really don't get it.. Really rare it happens on any other situations, or rarely when i'm on Facebook and charging at the same time.
Thanks
JiDey247 said:
Yo guys,
I have my LG G4 since a while but this problem is really annoying me.
Had two LG G4 and they all did the same.
I litterally can't play any games because of that. While i'm playing 90% of the games that are available on the playstore, my CPU is overheating and i feel my LG G4 becoming so hot in my hands.
Then after a few minutes everything is freezing for 2-3 seconds and then the phone is rebooting.
Can you guys play Asphalt 8 or Arrow.io without rebooting after a few minutes? it's really annoying.
I would like to know how can i fix that? Do i need to root my phone and Underclock the CPU?
I really really don't get it.. Really rare it happens on any other situations, or rarely when i'm on Facebook and charging at the same time.
Thanks
Click to expand...
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Same issue while playing clash of royale for 5 minutes , phone heats up an then freezes. I've to take battery out and restart after 10 minutes to get it boot
Check your serial of your device. If it starts with a digit of 5 I would say it will be the well known main board issue
Sent from my LG-H815 using XDA Labs

Random reboots and screen glitching

Hello , nice to meet you all. I am a new XDA user so apologies if i do any mistakes.
Yesterday, i got the 2 GB Ram variant of the LG G3 D855 from a relative. The phone almost works fine, except for two problems:
The first problem is that sometimes, the phone either locks up for about 3 seconds and shuts off (or maybe the screen shuts off? not sure), or either it completely reboots on it's own. I know, there is already information about this on the internet, however, some people say that it's a battery problem, some say it's an overheating problem. I am just confused. By the way, the issue happens no matter if the phone is charging or not. It also happens even when the phone isn't overheating, although it happens less. I may try a battery replacement, but unsure if it will fix it or not.
The second issue is, it's not really a critical issue, but it's just annoying. For some reason, especially when the phone overheats, the screen's right bottom side starts glitching (It also mostly happens on the home screen for some reason). And no, i don't mean flickering. Some glitchy lines appear at that portion of the display for about a millisecond and then goes away most of the time. Today the phone overheated when i was watching YT once and those lines appeared for like 5-10 seconds.
Also, i've noticed that the phone overheats a lot. Like, it gets quite hot sometimes.
I've already tried a factory reset, but it did not fix anything. The phone is running the stock Android Lollipop 5.0 firmware by the way. I did not want to take a risk trying to upgrade the phone to Marshmallow or install a custom ROM because of these problems.
I don't want to spend too much on the repairs of this phone since i've already got an another phone with almost the same specs as the LG G3. But i also want to use this phone. I just like it's design so much. Please tell me if it is worth getting it fixed and what i should do to get it fixed at the lowest cost possible. By the way, i don't understand much about the hardware of smartphones (I will get it repaired to an expert). So please, try to explain the problem as simple as you can do. Thank you and i wish you all a great day.
UPDATE: I've also noticed that the phone also has the screen flickering/disappearing issue.
However, asides from that, i've found an another issue too. So this evening, the phone was overheating too much so i decided to let it cool down a bit. So i closed the apps and put it into sleep mode. After about 5-10 seconds, the phone started doing REALLY LOUD tv static like noises. I immediately pulled the battery out, and i am afraid to turn on the phone because of that. I think the sound didn't come from the battery but i am still afraid.
I will bring the phone to a repair centre. But at this point, i don't know if it is worth getting it repaired. I am so confused. Is the phone dead or not? I've tried pulling the battery out and trying to boot the phne while it was getting charged (DON'T DO IT for your safety) and i get the "No battery" screen. I hope anyone that understands the hardware of this phone will help me. Thank you all.

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