yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] Tom-Helge:
You can download the same stress test program as i'm using from Android Market. It's called StabilityTest v1.5.

it will test your CPU's on your Galaxy S II if you are overclocking it. But you can check the temprature even if you aren't overclocking.
[Galaxy S II General] bilboa1:
the temp rise is sort of random, i can play games for hours (and its 26C here) with brightness on auto and so on, it doesnt get hot

then suddenly, it does, sometimes even when im not doing much

didnt get the time to pin point w/e thing creates that behavior

(and when i say hot ofc im talking of very very hot - which is what everyone talks about imo)

killall or restart and its good to go til it happens again
[Galaxy S II General] Serav:
I'm running that app now. I wanted to get an idea of temperatures at stock before undervolting/clocking so I could see how much difference it made. But the phone is seriously hot to the touch, enough to be worrying about. The app's reporting 50C after 37min but it feels hotter than that to me.

Some components are designed to run hot. For example I have an ATI 4850 that happily runs 70+C at idle is rated for up to 120C. But I'm worried even if the exynos can handle these temps what about the other components? The top of the screen feels even hotter back. Could this cause damage to the display for example?

This is my first smart phone but having that much heat in such a tightly packed device seems like a recipe for failure.
[Galaxy S II General] troed:
You will find temps of 50 deg centigrade and more when using all resources of SGS II (e.g. nav with wikitude drive = camera on) and phone attached to car screen on a sunny hot day.

This is normal!

Touch a nav-device in action and You will find it glowing ......

But contrary to HTC HD 2 SGS II does not freeze or crash at that point.

Leave a device switched off in direct sunlight in a car and it will get hot too, but still it will work .....
[Galaxy S II General] baron von bubba:
my phone was getting extremely hot when benchmarking etc, this was default clock and voltages.

the phone reported it was reaching 50 degrees. thought this was "normal". this was on the firmware the phone was running outta the box.

flashed latest firmware and have since messed about with overclocking, @ 1650 my phone never got as hot as it did stock.

so if you have not done it, flash the latest FW...
[Galaxy S II General] shawt:
So your cpu is not 1200 but 1650mHz now?
[Galaxy S II General] ogsv:
Been running tons of different ROMs on tons of different Android devices, and every once in a while there is a particular combo that gets tremendously hot.

Once had my N1 get so hot while using Co-Pilot Live and Spotify while plugged into a car charger, that it turned off and wouldn't come on again for some 5-10 minutes.. Definitely worrying.. Switched ROMs and never saw the problem again.
[Galaxy S II General] shawt:
So you think this is ROM problem,not hardware? Could efect if is phone root mode?
[Galaxy S II General] croftyboy8:
see my thread on over heating http://xdaforums.com/showthread.php?t=1108488

My phone got so hot, it warped the internals which caused a worrying rattle!
[Galaxy S II General] Beefheart:
For dual core devices running above 1ghz it's perfectly normal. These CPUs generate a lot of heat running at that speed and there is virtually no heat dissipation given the size of these phones.
[Galaxy S II General] mrcd:
It hot and nice my frend
[Galaxy S II General] croftyboy8:
Sadly, Im not sure the internal hardware can cope with prolonged heat. You will be heating and cooling this thing every day for 2 years!!

Im not sure my

kettle,

iron,

frying pan,

toaster,

girlfriends GHD's lasted that long!
[Galaxy S II General] shawt:
So you have third phone now?And this phone is slow but not hot?So you think Ishould take my phone to the shop and try to replace it?
[Galaxy S II General] croftyboy8:
Its up to you, I took it back because of the rattle and warping. If your handset is holding up then id keep it! There may well be a Firmware update to help soon
[Galaxy S II General] baron von bubba:
not now. i just tryed to push it as far as i could.

it does seem to run stable at this speed tho.

im just trying to get better batt life now so is running stock speeds but undervolted a fair bit.
[Galaxy S II General] arii1986:
I was using Google maps navigation beta. Heat was ridiculous (50°C) and battery drained at 1% every minute. Left home with 50 percent and when I arrived at destination was 34% after a 15 minute drive :s

Maybe its just the app that's got the battery drain though- CPU usage was going nut. I've used the normal Google maps app and GPS and didn't get that issue.
[Galaxy S II General] alexleon:
root and use setcpu to get rid of the burn.

max 800 speed is recomended. 1.2ghz is only a marketing point, no advantages to have such a over clock.

don't worry, no sides in downclocking, samsung did a good job all it was possible to gpu. so, can even downclock to 200mhz, but gpu still will run at 450mhz. no side when browsing, using UI, lookin the gallery.
[Galaxy S II General] Mittaa:
Your screen Brightness was ??? :rolleyes:
[Galaxy S II General] DaFileFather:
My SGS2 got very hot too this morning..

i was doing nothing seriously on it.. just checked mail etc..

and i felt it was cooking around the cam lens... :confused:

i rebooted the phone and for now it is gone.. but don't know for how long.

i heard if you upgrade to KE7 this is gone. Is this true? I am still on KE2 Stock.

Thnx.
[Galaxy S II General] psp888:
Why don't you update to KE7?
[Galaxy S II General] DaFileFather:
Well i'm planning to return this phone if it keeps this buggy...

That's why i didn't upgrade. And besides this in the Netherlands there is no

KE7 YET! :mad:.. i don't know why.. but if i update with the KE7 on XDA

i will loose the Dutch CSC.. you know.
[Galaxy S II General] J.2K4V:
my phone doesn't heat up on KE7 update... i bought it with that update already installed but i did notice the first time I ran nova it got quite hot but throughout the days it didnt get as hot.. now I leave about 3/4 hd games running at a time getting the phone quite warm.

had it for 7 days now and I just love this phone :)
[Galaxy S II General] Nurra:
This happened to me too, guess this is the price to pay for having three dual core.
[Galaxy S II General] DaFileFather:
what do you mean with three dual core... ?
[Galaxy S II General] Nurra:
Ha ha my mistake I'm using swype so you know sometimes the right word doesn't appear and I didn't double check my spelling.
[Galaxy S II General] Blue1k:
Mine never gets hot. Even gaming. It gets slightly warm but barely noticeable.

It used to get hot on KE1 but never on KE4 or KE7.

If mine doesn't get hot the question should be is why?
[Galaxy S II General] shawt:
I think KE7 is ok.It is still geting warm,but not hot like before.
[Galaxy S II General] arii1986:
Max. But I have it on Max all the time and never 'heats up'.
[Galaxy S II General] troed:
Tested now in the car navigating in the current hot humid sunshine in Austria:

Had my HTC HD2 with Copilot and SGS II with Sygic cradled to the dashboard and driving for 1,5 hrs in the city (stop and go) in full sunshine both at max. brightness and fully loaded before activation:

HTC HD 2 quitted/froze after reaching 46 ° C after some 30 mins

SGS II stayed constantly around 42-44 °C, no shutdown

Of course it FEELS hot, but 44°C is not really hot .............. :D
[Galaxy S II General] Mittaa:
Together with intensive use of GPS, CPU (and charging) it does heat up !!!

You asked for it :D
[Galaxy S II General] CamoGeko:
I have the same issue, after just charging my phone fully for second time my battery went down to 70%. All I did was play brothers in arms for 25 mins :o Also my battery temp went up to 42 C. So the phone felt very warm, I had to stop playing.

I hope this is just a software issue, Samsung please sort it out.
[Galaxy S II General] Mittaa:
Hi

Made a drive test today:

Google navigation, brightness 50~60, charging and direct sun ... after 10 minutes battery temperature was 50 degrees and stayed at that level.

Then I lowered brightness to 20% and after 10 minutes battery temperature was down to 42 degrees.

When I unplugged my charger, battery temperature went down to 37 degrees.

So I think lowering the screen brightness might be a good idea, when using SGS2 as navigator a hot summer day :)
[Galaxy S II General] MoeBD:
every smartphone is hot << double meaning ;)
[Galaxy S II General] CamoGeko:
I think its a good idea to underclock using Tegrak's app from the market. It been suggested to me by pulser_g2, the creator of VR.

Don't use SetCPU as it can't keep down the freq.

Sent from my highly desired HTC Desire Z with XDA app.
[Galaxy S II General] zkyevolved:
Mine gets hot after 5 minutes of playing any game! It got to 40-43 degrees at one point. Only while playing games! I was watching a 720p video for 1 hour on it (bus trip) and it was fantastic! No heat! (nothing I could measure by hand I mean, I'm sure it heated up a little) but 5 minutes of any game and it goes nuts! I don't know :( KE1 stock. I wrote Vodafone and Samsung today, I want a damn update to KE4, KE2, KE7 or something without having to void my warranty!
[Galaxy S II General] nookcoloruser:
Query. Does it only get hot with games ?

So far I haven't had any heat issues though I know others who have, I am considering buying a casemate 'tough' case and wondered if this may make any potential heating issues more of a problem.
[Galaxy S II General] CamoGeko:
I've got a casemate ' barely there' case on mine and I don't notice any differences at all really.

Transmitted from a Galaxy far far away via XDA telepathy.
[Galaxy S II General] Sp1tfire:
Mine gets hot after 5 minutes of playing Dungeon Hunter, both the screen and back, but doesn't get too hot if i play crappy arcade games. Considering Dungeon Hunter game eats a lot of resources and the phone is very thin it's somewhat understandable. 40 - 45 degrees is not that hot for a phone, but of course your hand feels the temperature being at least double. Managed to drain my battery from 100 % to 0 in 2 hours playing the game continuously :o
[Galaxy S II General] zkyevolved:
wowsers. lol. That's a lot of gaming! I usually play for like 10 minutes or so when I'm bored.

I'm also waiting for some cases that will help keep my hand off the back, and hopefully less heat will be felt.

Samsung wrote me, they said that the design is just that. So that the head dissipates from the back toward the camera. Specifically "two cores create a lot of heat, so the thermal plating dissipates the heat through the back. It's a design decision to make it so thin" basically that's what they told me. Oh well. I love the phone regardless ^^ I won't complain in the middle of the winter :P but it's JUNE nearing JULY! It's HOT!
[Galaxy S II General] Sp1tfire:
Oh, well, game is nice and addictive :o You got a point here, we won't need gloves in the winter :eek:
[Galaxy S II General] nitin.04:
I am on kE8 and the phones too hot when used HD
[Galaxy S II General] Cuz80:
too hot when watching video

Hi mine gets really hot when watching videos.

It gets hard to touch on the camera lens area after 1 hour of normal video playing.

I'm on KF2. Would a downclock of Tegra work?
[Galaxy S II General] DaFileFather:
shute.. even on newer roms the problem is still there?

have the same sometimes on KE2 stock :(

When will Samsung WORK on this?
[Galaxy S II General] arntgur:
Got here from http://androidforums.com/samsung-galaxy-s2/349947-heating-problem-s2.html, so first linking back for good measures.

Specifically, see: http://androidforums.com/samsung-galaxy-s2/349947-heating-problem-s2.html#post2880217

And: http://androidforums.com/samsung-galaxy-s2/349947-heating-problem-s2.html#post2939796

I got exactly the same issue. All of a sudden the heat jumped. It was besides me faced down and being charged. Got very hot just below the camera on back and around the same place on the other side at the front screen. First I cooled it off, killed apps, and opened the cover.

Then I could repeat heating a second time suspecting that it's wifi related, was downloading movies from the phone to the laptop through kies web-interface and phone ran as a server. Though heat started on the side of the phone under the volume button, and I have not let it warm that bad a second time to avoid damage, so it could develop to further heat as seen before.

I am on 2.3.3 BOKE4 which came from t-mobile germany from the amazon order. Seems that upgrade to latest CWM / CyanogenMod / KEx with 2.3.4 could be the next step per what I am reading. Any other suggestions?
[Galaxy S II General] EarlZ:
Playing Dungeon Hunter 2 for about 1hr 30mins, nothing really hot.. just warm.. slightly a bit warmer than playing angry birds, battery temp stays at 42-43c tops.

I've read reports on other forums about phones overheating alot, Im lucky that mine barely gets warm.
[Galaxy S II General] iQanTa:
Hey, I was just wondering what you really mean when you say "nothing really hot". For me, when doing random browsing of the internet using my S2, my phone feels quite warm when i take a phone call, which is quite irritating, but nothing serious enough to burn my ear (yet.... I am on KF1 btw) Is that what you mean as well? Or are you able to take calls and not feel the heat at all? Just curious :)
[Galaxy S II General] troed:
Hey, what are You ? Trolls ?

Did You read THAT some posts before ?

IT IS NORMAL BY DESIGN !!!!!!!
[Galaxy S II General] iQanTa:
Dude, you refering to me??
[Galaxy S II General] Duzzy5:
i ounce got my sgs2 to 63 degrees, oced to 1600mhz on syah kernel, was charging, downloading movie from torrents, and playing apshalt 6 hd, then it was too hot to touch, it was too hot for my finger to play with it ;DD but try touching old 3.2mhz pentium 4 processor when it is without fan :)

---------- Post added at 01:50 PM ---------- Previous post was at 01:49 PM ----------

ah short add, for human being 60 celsius is hot as your body tempreture is 36.6. but imagine what does 60 mean for plastic, silicium, and metal :) i think its no big deal, its worlds fastest smartphone on the market, it is supposed to be HOOT lol
[Galaxy S II General] Harsha Raj:
U can do torrents directly to GS2?! which app u used?
[Galaxy S II General] Duzzy5:
torr

i think you can do that with any android fone with aDownloader for example
[Galaxy S II General] MrPhilo:
Trust me, flash Modem KH3 and see the huge difference it produces heat compared to KIx.
[Galaxy S II General] placeboism:
mine too bro...

i keep playing this game..its about 20min, already hot like hell..haha..

but there's once when i put this toxic rom..the phone does only warm..cool stuff..

they using syiah kernel as well..but when i put syiah kernel to other roms

it' just hot..
[Galaxy S II General] Duzzy5:
if you want it to run cooler you can use lulzactive scaling at syah kernel, even overclocked at 1600mhz it wont get that hot :)
[Galaxy S II General] anto.danny:
i had this problem too..its purely firmware related...i flashed with V3RTR3MA V4 the day i bough SII...i noticed it getting heated while playing games near the rear camera...i thought it was normal...but when i flashed to the newer version V46R3 aka "The ICS Killer" it did the trick..it does get hot,but not too hot like in the earlier version..:rolleyes:
[Galaxy S II General] cwh1996:
Norm

Playing games (especially games that have demanding graphics) and experiencing some degree of "hotness" is a norm. Not sure about the proven reason behind it, but I'm guessing that since your phone requires a large amount of CPU usage for it to run and process the information, it is no wonder that it will turn hot after some time. Charging your phone also makes your phone turn hot
[Galaxy S II General] Kaffee4Eck:
I must say sgs2 is cooler as the HTC One X but normal... XD Dual Core and Quad Core the temps for passiv cooling normal. I wait for a phone with a cpu fan xD
[Galaxy S II General] WebghostDK:
This is normal for ALL android phones.

It was the same for all my android phones: Nexus one, HTC Desire, HTC Magic and now the SGS2.

Apparently it will never be fixed, deal with it or get a iPhail.
[Galaxy S II General] by_dj_omar:
my SGS2 is same problem , when I open application(game) then it was hot...
[Galaxy S II General] SamKia:
My SGS2 gets hot ONLY when the charger is plugged and i'm using the phone, besides i have a battery widget that shows the temp of my battery.

Just don't use it while you are charging it.
[Galaxy S II General] E_Keeper:
My SGS2 (4.0.3) is really hot in heavy games (NOVA, Asphalt 6, Avatar) and while browsing. It's summer soon and I'm affraid of that - how my device can be healthy if outside temp about +30C? Overheating? :mad:

---------- Post added at 04:56 PM ---------- Previous post was at 04:53 PM ----------

It's no good, try another charging device less that 1Amp. More time, but less temperature :)
[Galaxy S II General] nrd\:
im a new owner to the s2, last night i was using the phone on 2% with the charger connected and the phone got warm, 48'c, wheres my water froze, had to battery pull.

strange my dhd never got warm, but that is a alu/metal case.

can someone confirm the amp rating on the factory charger? im using a 1a nexus one currently.

ta.
[Galaxy S II General] pHraiL^:
I had same problem, but now I always under clock the CPU to GHz because I think I don't need whole 1.2 CPU. It also helps in battery saving and doesn't get hot as it used to do. Though I haven't played games for like few months yet I've tried Samurai 2 for like an hour and the phone wasn't hot at all. Yeah getting warm is something normal. Everything packing GHz of processor working in will get warm.

On Hydra ROM by NeoPhyte.
[Galaxy S II General] riovte:
absolutely normal, its because when you charge the battery the voltage frequency increase. you can solve it by changing your kernel and ROM..
[Galaxy S II General] al_madd:
Maybe undervolt can solve this problem..
[Galaxy S II General] alc027:
Undervolt your CPU. Seriously. Our devices get very hot but they don't like it. If nothing else your battery capacity will diminish over time.
[Galaxy S II General] letscheckitout:
I am also facing the same issue only when the some app is processing data for a long time. other than its normal. as said will check if undervolting would help.

thanks.
[Galaxy S II General] hirenpatel42:
i am also facing the same problem so i have to take out the battery and wait for couple of minutes then start again
[Galaxy S II General] Mcjim113:
The hot one for me was stock clock on the CPU, overvolted and overclocked GPU to 400 MHz. Had six-axis running to use the PS3 controller and had the MHL connected to plug it into the TV play while playing N64oid. To say it was warm would be an understatement after 30mins or so it even had that smell that plastic has when it gets hot.

Won't be trying it again lol :D
[Galaxy S II General] PureLogic:
avoiding the loudspeaker when playing games helps in reducing the heat. just use an earphone. ;)
[Galaxy S II General] thunderbald:
i recommend you to use the latest version of resurrection remix ics aokp version by wescript. the rom is very much battery friendly and also my galaxy s ii have no overheat anymore
[Galaxy S II General] paulmonckton:
Galaxy SII reaches 59 degrees C while plugged in - does not charge

Hi,

My Galaxy SII has been working fine for ages. It's rooted, but not overclocked and running ICS.

Today, I noticed it was very hot. I checked the battery temp and it's being reported as about 59 degrees C. It's never run this hot before.

When I plug the phone into the charger, it says the battery is charging but it never actually charges up. I have two batteries and the situation is the same with both.

If I try to use the phone with no battery installed, but plugged in, the phone doesn't work. I have a vague recollection that the phone used to work like this and allow me to swap batteries without rebooting, but I could be wrong.

Any ideas?

Thanks,

Paul
[Galaxy S II General] erwichii:
same here

well, the most often is when playing games and surfing in web with dolphin browser, the rest of the day it stands cool
[Galaxy S II General] Zerostress:
I think you should install an app or try this code: *#*#4636#*#* - Battery Information. Now you should see which temp and how the status of your battery is ;)
[Galaxy S II General] NoNameNPC:
Some of google play apps provide ability to get full system information about battery.
[Galaxy S II General] undersc0re:
mine gets hot too cuz of playing mc3
[Galaxy S II General] stierney:
Phone won't boot without battery for starters. Mine gets pretty warm when browsing or gaming but 59 is getting too hot and you don't want the device getting any hotter than that. Try another battery is my suggestion.... mine only hits 50+ when browsing/gaming when the device is charging at the same time
[Galaxy S II General] nuraniharun:
Yes, My sgs2 was very hot until flashing AOKP or CM9 rom. Now it is normal.
[Galaxy S II General] Zerostress:
Yes thats the meaning of use an App ;) but thx for the translation ;)

Gesendet von meinem GT-I9100 mit Tapatalk 2
[Galaxy S II General] Zerostress:
hmm you use the original rom of ics or a custom?

have you used more intensiv as before? sometimes the mobile have battery draining and hotness problems i know but if you have it constantly i would send it to samsung or to your carrier. they test it or send you a new one ;)

Gesendet von meinem GT-I9100 mit Tapatalk 2
[Galaxy S II General] newbZz:
I think its very normal although I'd wish it wouldn't be.. I mean it's a mobile phone.. anyway no need to be concerned about it.. You wouldn't be if it was a normal PC, would you? Ain't no diffenrence :D
[Galaxy S II General] Rockin_Zombie:
+1, have switched to CM9 two days ago, much cooler relative to samsung stock.
[Galaxy S II General] z_lancer:
its a known issue for SGS2 to heats up

but i've been using remix resurrection rom with siyah kernel

seems the problem has minimized
[Galaxy S II General] leeto:
Fréquenté bresfe

Do you really see a difference ? Especially while playing games ?
[Galaxy S II General] z_lancer:
i think not when playing games,games usually use full capacity of processor..

but i had an issue 1 time

was using stock firmware and my phone got so hot and drained the battery like hell even without doing nothing

i charged it but battery still drains away

now i havent see the problem anymore

if u play game alot,try not to charge and play at the same time

it will cause overheat:)
[Galaxy S II General] twilight-Zone14:
I've tested many roms and flashing various kernels, my sgs2 warms up spcialy when playing games, i think its normal, heat of screen by using it for a while and the processor's heat warms up the phone. it is a

phone

not a playstation :rolleyes:
[Galaxy S II General] manubar:
noob problem

hi guys. I've seen the video, I've read the thread and i don't think i can find a similar situation with this overheating I'm experiencing.

I'll explain it shortly: phone was perfect last night, battery almost out. I put it to charge, same charger, same place, still on like always. I went to sleep and woke up about 5 hours later. The phone was burning, even hard to touch, and the charger too. And it hadn't charged more than some 30%.

I disconnected it all, opened it up, let it get some air and took it to college with me. All the battery ran out in a couple of hours.

I put it back to charging now and with 20 minutes of charge it's up to 50ºc (122 F). I turned it off and it's cooling a bit but i'd say it's still around 40 after another 20 minutes.

I started using the phone in march.

2.3.4 gingerbread.

Possible important fact: It was locked to an operator and I followed a tutorial i found in the internet to unlock it to all sims, so i had to replace kernels even though i dont really know what that means.

There's one thing I've been reading and i can't agree with: "turn the light brightness down, play less games, listen to less music, turn off the wi fi" ... bah to that, I bought a 400 euros smartphone not a gameboy.

thanks in advance, sorry if there's something quite like this already.