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  1. Thread Author  Thread Author    #1  

    Default tablet heating upper right area after kit kat update

    I updated my tablet two days ago and since then I have noticed that it has been heating up around the upper right area, where the s pen is located. Any one else having this issue? I really wish they tested this update before releasing it.

    Is there a way to uninstall this update.
    Thanks in advance
    Mig
  2. #2  

    Default Re: tablet heating upper right area

    Mine has been getting warmer than it used to since the update in the same area. I pulled the spen out and it was very warm.
  3. Thread Author  Thread Author    #3  

    Default Re: tablet heating upper right area

    What apps are you using? Most of the time I have been using flip board and using the default browser. I am beginning to think it a WiFi thing. Do you or anyone reading this know where the antenna is located? I can rule out Bluetooth since I rarely use it and have not used it since the update.
    If this persists, I am considering restoring it to factory settings if I can't find a way to uninstall.
  4. #4  

    Default Re: tablet heating upper right area

    Is it real?.... I noticed a warm area when first got tablet and now 4 months later its still there with no increase in temperature with KitKat...

    Only antenna mentioned in manual is in about same area as SD card slot and its the GPS antenna and only caution in manual is to not to block it as it may cause erratic GPS signals ...

    Dale
    Diagonally parked in a parallel universe.
  5. Thread Author  Thread Author    #5  

    Default Re: tablet heating upper right area

    Hi Dale, my tablet never got warm like it is now. Even while playing games and streaming music, it never got this warm.
    So the antenna is around the SD card..then I guess it might be something else then. Thanks
  6. #6  

    Default Re: tablet heating upper right area

    Might be location of one of the processors... Maybe display or main CPU... Just a shot in dark.... Can't seem to find much information on internal architecture....

    Dale
    Diagonally parked in a parallel universe.
  7. Thread Author  Thread Author    #7  

    Default Re: tablet heating upper right area

    I have watched a video of a repair of the tablet on YouTube, unfortunately I can't seem to tell what devices are located in the area where it is getting warm. Today I haven't been streaming any music and it hasn't gotten warm.
  8. #8  

    Default Re: tablet heating upper right area after kit kat update

    I'm pretty sure it's the processor getting warm. Under heavy use before kitkat it would get warm. Now just surfing the Web with the tablet makes it warm. Definitely a difference from before.
  9. #9  

    Default Re: tablet heating upper right area after kit kat update

    I've noticed this too, especially when using the S-Pen. The first time I booted up after the update and pulled out the S-Pen, it got H O T. Even input was sooooo laggy. But I rebooted and it went back to normal, but it does feel like it gets warm up there. But again, it does get warmer when using the S-Pen. Maybe the S-Pen sensors are near? Don't know.

    Since I also noticed better battery since the update (especially in Standby) and snappier overall performance, I'm willing to 'live' with the warmth :P
  10. #10  

    Default Re: tablet heating upper right area after kit kat update

    This is the processor getting hot. It has nothing to do with the KitKat upgrade and everything to do with an application using a lot of CPU time. There are a number of utilities to determine what is eating up CPU time.
    Phones: Droid (2009 original stock) --> Incredible --> Thunderbolt (Rooted/ROMed) --> Galaxy Nexus (Rooted/ROMed) --> Note 2 (Rooted/ROMed) --> Note 3 (Stock) --> Note 4 (stock)
    Tablets: Tab 10.1 --> Note 10.1 (2014 edition)
    Watches: Pebble (original) --> Moto 360
  11. #11  

    Default Re: tablet heating upper right area after kit kat update

    Quote Originally Posted by TabGuy View Post
    This is the processor getting hot. It has nothing to do with the KitKat upgrade and everything to do with an application using a lot of CPU time. There are a number of utilities to determine what is eating up CPU time.
    I'd buy this... if my tablet had done the same BEFORE the update. Like the OP says, doing the SAME ACTIVITY before the update and after it, yields different results in the warming up department, so the app, if unchanged, shouldn't affect. Something changed with the KitKat update, and at least in my experience, it improved other aspects of the tablet enough to make me look past the warming up thing.
  12. #12  

    Default Re: tablet heating upper right area after kit kat update

    Correct me if I'm wrong but isn't the operating system a program? The only thing different from before is the operating system. The kitkat update is causing the cpu temps to increase. Period!
    SpookDroid likes this.
  13. #13  

    Default Re: tablet heating upper right area after kit kat update

    This is ridiculously funny.... Processor does same work at same speeds no matter if nothing (idling with no apps executing) is running or things are going full tilt, and processor runs at a set speed set by system clock which is hardware...... Operating system changes does not do anything for how fast or how hot processor gets....

    Processor was at a given speed with Jelly Bean and it is at same speed with Kit Kat.... Learn about the hardware before you go off sounding so official and trying to sound knowledgeable.... As far as I can tell processor is running at a constant 1.8 to1.9 ghz (hardware research) and there should be nothing in software to change this....

    Dale
    Diagonally parked in a parallel universe.
  14. #14  

    Default Re: tablet heating upper right area after kit kat update

    Its actually 250mhz to 1.9 ghz, and the cpu tempratures are dependant on cpu load. Kitkat is obviously loading the processor more than jelly bean was.

    I opened mine up to see what was going on and found it to be the exynos processor. It gets so hot with the cover off you can't really even touch it. Here is a picture I took.

    SpookDroid and Dr Law like this.
  15. #15  

    Default Re: tablet heating upper right area after kit kat update

    I have found that my note get hot in that corner especially when playing certain games like family guy or sometimes watching a movie. I'm still currently running jelly bean.

    Posted via Android Central App
  16. #16  

    Default Re: tablet heating upper right area after kit kat update

    Yeah, if you're playing CPU-intensive games it did get hot before, but now after the update it gets hot when doing 'everyday stuff' like web browsing. Well, it gets warm... if you use an app that really throttles the CPU then yeah, it gets hotter, like geoff said.

    Dale_M... well, we're not trying to sound like experts, but should you? CPUs aren't always running at full speed, and that's the whole point of the system and Samsung's implementation (or any manufacturer's, for that matter). When needed, the CPU slows down or speeds up, uses one or more cores at the same time for the same process, uses one for one thing and another for a different task, etc. This is even stated clearly in the "Power Saving Mode" setting in the tablet. If your 'theory' were true, battery would last the same no matter if you were surfing the web or playing a graphic-intensive game.
  17. #17  

    Default Re: tablet heating upper right area after kit kat update

    Have been playing with microprocessors system since the mid 1980's, and most system I have run into have constant speed clocks... And processor processes 'x' number of operations second whether its sitting there waiting for a valid operation to do or running full tilt... Would like to see documentation where speed of this particular processor is dependent on work load (simple link to web site will do) ....

    Have not yet run into a processor with a variable clock rate,,,, Hardware clock generally determines processor speed, not load.... All operation inside unit depend on system clock so all operations stay in sync, even graphics processor and wifi and bluetooth and GPS operation need to sync with system clock..... Can you imaging the kayos inside a unit and how poorly it would operate (if it did at all) if all processes decided to run at their own rate/frequency...

    Dale
    Diagonally parked in a parallel universe.
  18. #18  

    Default Re: tablet heating upper right area after kit kat update

    Here you go... CPU Governors.
    [GUIDE] CPU Governors Explained in Detail for Android.... - xda-developers

    If you're rooted, you can tweak all these settings at will. If not, Samsung's implementation takes over and decides what the best setting for the CPU is depending on what you're currently loading the tablet with. From what I've heard, Samsung's tweaks focus mostly on how many and which cores to use (remember this tablet has an Octacore Exynos processor with little.Big architecture) rather than messing with frequencies.
  19. #19  

    Default Re: tablet heating upper right area after kit kat update

    Quote Originally Posted by geoffwhite18 View Post
    Correct me if I'm wrong but isn't the operating system a program? The only thing different from before is the operating system. The kitkat update is causing the cpu temps to increase. Period!
    Some apps will react differently to different versions of the OS. So, even though the only thing that changed was the OS, some apps may be behaving very differently. In fact, some apps no longer work at all under KitKat.

    The solution is simple, but arduous. Do a factory reset. Install no apps. Is battery time ok? If so, then it's not the OS. Install a new app. Is battery ok? If so, repeat until the bad app. I did this once on an earlier version of Android and found that Shazaam was a battery hog. Surprised me.
    Phones: Droid (2009 original stock) --> Incredible --> Thunderbolt (Rooted/ROMed) --> Galaxy Nexus (Rooted/ROMed) --> Note 2 (Rooted/ROMed) --> Note 3 (Stock) --> Note 4 (stock)
    Tablets: Tab 10.1 --> Note 10.1 (2014 edition)
    Watches: Pebble (original) --> Moto 360
  20. #20  

    Default Re: tablet heating upper right area after kit kat update

    You are right. It could be one of the apps wigging out. I did a factory reset after the update but that didn't seem to help. I actually have a thred titled "refresh after update" suggesting that everyone do the same. Yesterday I installed a cpu monitoring app to see what processes are using the most cpu time. When I figure it out I will report back.
  21. #21  

    Default Re: tablet heating upper right area after kit kat update

    Quote Originally Posted by TabGuy View Post
    Some apps will react differently to different versions of the OS. So, even though the only thing that changed was the OS, some apps may be behaving very differently. In fact, some apps no longer work at all under KitKat.

    The solution is simple, but arduous. Do a factory reset. Install no apps. Is battery time ok? If so, then it's not the OS. Install a new app. Is battery ok? If so, repeat until the bad app. I did this once on an earlier version of Android and found that Shazaam was a battery hog. Surprised me.
    Battery time is not the problem, at least in my case, it greatly improved after the update (although, like you say, if CPU load was lightened, it would be even better!). And like geoff said, when I updated I did so with a clean install, so I know that only stock apps are still causing the tablet to get warmer than before the update. So, the update made something change. But since I got better battery life, I'm willing to live with that.

    PS: If an app 'misbehaves' with an OS update, it's not the app's fault entirely, it's still the update. Yes, the app needs to be updated, but only so because something changed in the OS and the way things were being done before.
  22. Thread Author  Thread Author    #22  

    Default Re: tablet heating upper right area after kit kat update

    Geoffwhite, thanks for sharing that photo. Now I know that the area heating up is the processor. I think I will do a factory reset and go back to jelly bean. I have never encountered a tablet that gets this warm, it should not get this warm/hot, I don't want damage any hardware in this device....but then again it is under warranty
    Thanks
  23. #23  

    Default Re: tablet heating upper right area after kit kat update

    Quote Originally Posted by sir_miggy View Post
    Geoffwhite, thanks for sharing that photo. Now I know that the area heating up is the processor. I think I will do a factory reset and go back to jelly bean. I have never encountered a tablet that gets this warm, it should not get this warm/hot, I don't want damage any hardware in this device....but then again it is under warranty
    Thanks
    I may be wrong, but if I recall correctly, doing a factory reset WILL NOT remove the KitKat update. Again, I might be wrong, but I don't know why that sounds like something I've read before.

    Am I the only one experiencing up to twice the battery time with KitKat? Mine gets warm but not hot hot hot, at least not for me to worry about hardware damage, maybe yours gets hotter. Anyway, since I'm getting much better performance than before, I'm more than willing to live with a warm tablet (but again, that's because mine gets warm, not hot).
  24. #24  

    Default Re: tablet heating upper right area after kit kat update

    Quote Originally Posted by TabGuy View Post
    Some apps will react differently to different versions of the OS. So, even though the only thing that changed was the OS, some apps may be behaving very differently. In fact, some apps no longer work at all under KitKat.

    The solution is simple, but arduous. Do a factory reset. Install no apps. Is battery time ok? If so, then it's not the OS. Install a new app. Is battery ok? If so, repeat until the bad app. I did this once on an earlier version of Android and found that Shazaam was a battery hog. Surprised me.
    There's a more simple way to do this: Safe Mode. Yup. It's not only a Windows thing. The problem is, just like with Recovery Mode, manufacturers have different ways to access this mode on each device, and unfortunately I can't recall how to access it on this tablet. But essentially what it does is booting up with system-apps only. Anything you downloaded becomes inactive unless you specifically spawn an app. This is even useful if you want to test an app individually.
  25. Thread Author  Thread Author    #25  

    Default Re: tablet heating upper right area after kit kat update

    Well, I did a factory reset and kit kat was installed automatically. I guess you can call it a refresh kit kat install? different from an upgrade. Before doing so I removed my SD card. The tablet does not get as hot as it used to! An improvement? I reinstalled TuneIn, streamed some music for a few minutes, it still was slightly warm, did not get any hotter. Then I started to surf the web with music. and the same, no change in temperature. I will still continue to play with it and add the SD card. It still bothers me that it gets...a little warm. All this time the tablet was cool while playing videos, multitasking...

    As for battery life, I place the tablet on idle, turned off the lcd. before going to sleep 96% charge. 6 hours later, woke up this morning to find out that the tablet had a 86% charge!? I dont think this is an improvement in battery life.

    I still want to downgrade to Jelly Bean, does any one know how to do it?
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