Database Users

Hardware Temperature Regulation on S2 and Related Concerns

This is weird. I know a lot of users were complaining of heating issues with their SG2's. I can't complain with the current S2 I have on me. The temps never exceed to that extent where it becomes unbearable to touch, and the temps are usually maintained between 29 and 34 degrees Celsius. I heard from a couple of sources that the Blue motherboard fitted into the S2 has a temperature regulation sensor whereas the Green motherboard does not and many complain. whats stranger is that my quadrant benchmark scores never exceed 3400 (on the 2.3.5 firmware) and its really starting to becoming puzzling. Do I have a hardware defect? or is it something coming in the way from preventing me seeing the full potential of my S2?

A quadrant score of 3400 is typical for a stock SGS2.

lol, I forgot I was running a stock version. i guess those users posting up scores greater than 3700 have rooted their devices with some napthalene kernel, thanks for clearing this up for me. I guess im still a noob. is 34 degrees celsius normal?

^^ "napthalene" ?
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isn't that the name of the kernel most folks are using? :confused
lol

It is just people aren't used to phones getting warm when they are using an app like a game. They then panic and think their phone is going to die and post about the phone over heating or getting too hot. If you can hold your fingers on it continuously that is warm not hot. Hot is like fresh cup of black coffee which is too hot to hold.

SAlmighty said:
lol, I forgot I was running a stock version. i guess those users posting up scores greater than 3700 have rooted their devices with some napthalene kernel, thanks for clearing this up for me. I guess im still a noob. is 34 degrees celsius normal?
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Yeah, and most users also overclock their SGS2. Mine for example does about 3400 when stock, but when overclocked (simple when you have root), will bring it to 3700 and above. I've hit close to 4000 in the past as well.
WIth regards to the temperature, that is the temperature of the battery. 34ºC is normal. It can go higher during charging (I've reached 44ºC), but I recommend not charging and playing a CPU/GPU intensive game at the same time as you would have two heat sources that the phone will have to deal with.

[Q] Nexus 4 GPU Frame Rates Drops

Hello Guys, i registered to XDA developers to ask this question so please reply. i heard many say GPU of Nexus 4 is very bad because after 20 mins of gameplay the phone gets heated and the GPU performance is Dramatically Reduced to cooldown. I am going to buy Nexus 4 thats y im asking, i didnt hear this from my neighbours..., i saw someone say this in youtube comments. Anyone Experiencing this Issue? or its a defective product?.

This is a good thread to read about Thermal Throttling: http://forum.xda-developers.com/showthread.php?t=2144652
I am not sure about the GPU actually reducing it's power when the nexus is getting hot. I know the CPU will clock lower when it has reached 70 degrees so it can cool down. Most kernel's have the ability to up this to about 100 degrees so you won't have the thermal throttling as fast. You are also able to remove the throttling completely with a commando.
I've played alot of Dungeon Hunter 4/GTA Vice City/Real Racing 3 and I have never experienced severe FPS drops because of it getting hotter. The only thing you will experience is a battery that will be empty within 2 hours.
PS: This is based on what i've read on the forums, I do not have my nexus 4 for that long and I am not a developer, someone might be able to give you more accurate information.

The thermald.conf sets the battery threshold to about 40-41C before it begins to underclock aggressively (hence why it feels sluggish). I forget the exact number. It starts reading "Overheating" status when it reaches about 46C. Max rated temperature for the battery is 60C.
At that battery temperature ~41C, the CPU is no more than about 50C, so it's not the CPU overheating.
If you feel so inclined, you can modify the thermald.conf with root to modify how aggressive the thermal throttling acts, within reason. Otherwise you'll cook your phone.

desynch- said:
The thermald.conf sets the battery threshold to about 40-41C before it begins to underclock aggressively (hence why it feels sluggish). I forget the exact number.
At that temperature, the CPU is no more than about 50C.
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or you can run a custom kernel(like trinity) that disables the battery thermal throttle and not worry about it.

simms22 said:
or you can run a custom kernel(like trinity) that disables the battery thermal throttle and not worry about it.
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YMMV with that. My nominal binned SoC overheats really easily. With the way I use my phone, it'd be overheating way too often.
I modified my thermald.conf so it's less aggressive. It's not that hard to figure out.

The phone throttles its clock speed like a PC. It's not a big deal.

Hi guys please can you post antutu stability screens

Hi Guys
Basically had two S4's from phones4u, my first was the black mist, which had intermittent faults and in my opinion overheated. This was sent
to Samsung who said that in a nut shell it was fine and the S4's ran warm get over it or words to that affect. As I was unhappy and out of the 28 day return I decided to sell. I was still in love with the S4 so bought another again from phones4u from an ad as an upgrade but I was given the receipt.
This one is the arctic blue version which is really sexy hehe and I love the look, problem is this one seems to also run hot in fact even hotter than the black mist, I was hoping as the blue model was newer Samsung would have identified the heating issues and built the next batches with possibly better thermal compounds or some other way of reducing overheating. This version also occasionally lags and jutters from time to time, I find when on power saving mode they both ran smoother.
My problem is I only have a few days left on the 28 day return so I want to make sure that I havent been that unfortunate to have 2 brand new s4's that are faulty, I know that the s4's run hot and I know that a lot of people are complaining about smoothness, but how hot is the norm and how smooth should they be?? is the question.
I've had loads and loads of phones including, htc one, iphone 5, S3, various windows phones, so I know how smooth smooth should be.
I would like to root and put a custom rom on but I'm holding out to know if this phone is faulty or slightly faulty so to speak, or if everyones S4 is as hot and every so often jerky, I find internet very jerky especially when using chrome browser simple things like scrolling, its not my wifi as my wifes s3 and ipad mini run smooth or smoother.
On Antutu my benchmarks vary from as low as 21000 to as high as 26000?, I know that Samsung is involved in this benchmark rigging thing but surely thats not right?, sometimes I have wifi on dont know if that makes a difference both to benchmarks and heat?.
When I do a stability test, the top half of the screen gets very hot and normally temps start at 30 and rise to around 40 with a gradual increase, as for the stability it goes from 140 to sometimes 70 (3 or 4 times) it also takes around 15% out of my battery for around a 10 min test.
I have attached screens as luck happens the last stability test the phone went to under 40 as you can see, I charged the battery left it a while then ran the test fresh, please can you run the stability test on your s4's guys and put my mind at rest or help me prove to phones4u my phones running hot.
My firmware is UBMGA - i9505
Many thanks
Mav

Of course s4 is hot when you use processor a lot or when you recharge s4. Mine hasnt ever become uncomfortable hot but it is warm. Antutu score doesnt mean anything because everybody has different apps running and so on. You had two s4 and it is almost impossible that both of the phones has problems. Remember that s4 is very powerfull and it is very tight package so it is normal if its hot.
Sent from my GT-I9505 using XDA Premium 4 mobile app

My SGS4 is always hot during playing games. Sometimes extremly hot. I've sent it back for warranty repair but they said it's ok. So no luck.

S4 is hot
its hotter than S3 i used to have. It says 1.9Ghz but in games or benches its sometimes lower even than 1.5Ghz because of thermal throttling... when i used 1.5Ghz as max in setcpu i had better results in 3dmark! yep! and antutu score become stable - a bit lower but stable, with 1.9Ghz i had 24000-25600. with 1.5Ghz i had 24300 almost every time.
But now im using UV kernel and i UV -0,50V and i set thermal throttling temp to 90'C, now my antutu score became almost stable at ~26100
I think samsung overclocked this S600 to much... 1.5Ghz is almost stable but 1.9Ghz is definitly not.

Question about thermal throttling

Hi there people, I had just gotten my new note 3 recently and I had some things which are quite unclear about which is the thermal throttling part, may I know how to check for the settings for the thermal throttling and is there a way to disable it and what are the advantages and disadvantages of it? Greatly appreciated if anyone can help me out, thanks a lot
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the3nd4u said:
Hi there people, I had just gotten my new note 3 recently and I had some things which are quite unclear about which is the thermal throttling part, may I know how to check for the settings for the thermal throttling and is there a way to disable it and what are the advantages and disadvantages of it? Greatly appreciated if anyone can help me out, thanks a lot
Sent from my SM-N9005 using XDA Premium 4 mobile app
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If you root your phone and run a benchmark in one window with an app monitoring cpu temp on the other, you can watch for throttling. Throttling is generally good as it will save your phone processor from becoming too hot and damaging itself. I have seen kernels in the past that will raise the thermal limit with the assumption that it was put lower than necessary by the manufacturer. Personally, i wouldn't change the thermal throttling because the phone is damn fast AND there is associated hardware risk.

Action B said:
If you root your phone and run a benchmark in one window with an app monitoring cpu temp on the other, you can watch for throttling. Throttling is generally good as it will save your phone processor from becoming too hot and damaging itself. I have seen kernels in the past that will raise the thermal limit with the assumption that it was put lower than necessary by the manufacturer. Personally, i wouldn't change the thermal throttling because the phone is damn fast AND there is associated hardware risk.
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OK thanks alot, now that clears up some of my doubts
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The best way I have found to get around throttling when over clocking is to undervolt safely. It reduces heat and saves battery but still leaves the protective thermal throttling.
Sent from my SM-N900P using Tapatalk

When I am running antutu, I'm almost guaranteed a throttle halfway through the test. Anyone of you have similar issues?
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the3nd4u said:
Hi there people, I had just gotten my new note 3 recently and I had some things which are quite unclear about which is the thermal throttling part, may I know how to check for the settings for the thermal throttling and is there a way to disable it and what are the advantages and disadvantages of it? Greatly appreciated if anyone can help me out, thanks a lot
Sent from my SM-N9005 using XDA Premium 4 mobile app
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You can't damage the cpu since it auto shuts down when it's going to a value similar at the Tj
High temperature increases the current leakage of the transistor, it means more power dissipated, it means more degradation of the chip
But.. you could damage it in about 10years or more.. so.. thermal ID is only for limitate the battery explosion!

all ready have thermal throttling on my note 3 lte
iam sorry for cutting ur discussion but my note 3 lte read max frequency 1958 mhz insteed of 2.3 mhz ,is that means that device's cpu dameged due to over heating and thermal throttling and if no how can i recover the full 2.3 speed because its some laggy now

G3 Temperature Throttling

Stuck my phone in the freezer for a few minutes, took it out, and ran the stability test in AnTuTu which plots the temperature and a benchmark score. Looks like it starts right around 34 degrees (93 Fahrenheit), which really isn't that warm at all. You could get that just browsing around and holding it in your hand.

My cpu temp is normally in the 40's and 50's while browsing.

Have you tried turning the thermal daemon mitigation and high temperature property off in the hidden menu and see if this throttling happen? Will be interesting to know if the hidden menu selection works.

ddeath said:
Have you tried turning the thermal daemon mitigation and high temperature property off in the hidden menu and see if this throttling happen? Will be interesting to know if the hidden menu selection works.
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It does work. you can just open an app like setcpu and you'll see that it rarely peaks without disabling throttling. Just be careful as it does open you up to potential hardware failures and shorter life of the device. I only keep phones for around 6 months so I don't care but I'm not a normal usage case.

arcanexvi said:
It does work. you can just open an app like setcpu and you'll see that it rarely peaks without disabling throttling. Just be careful as it does open you up to potential hardware failures and shorter life of the device. I only keep phones for around 6 months so I don't care but I'm not a normal usage case.
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Wouldn't the hardware still have a thermal cut off point where it will just shut down the phone if it gets too hot? It's to my understanding that this hardware shut off point is different than the software thermal throttling. If anything, I think it will just make your device get too hot for comfort than do any real hardware damage to it.
I'm just throwing an educated guess out there though, I honestly have no real proof one way or the other.

Enddo said:
Wouldn't the hardware still have a thermal cut off point where it will just shut down the phone if it gets too hot? It's to my understanding that this hardware shut off point is different than the software thermal throttling. If anything, I think it will just make your device get too hot for comfort than do any real hardware damage to it.
I'm just throwing an educated guess out there though, I honestly have no real proof one way or the other.
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Yes eventually it'll hit tjunction and shut down. This isn't even a safe shut down though. It is basically an emergency kill switch. It's like yanking the cord out of the wall on a desktop. Running at higher temps also shortens the life of the silicone. Much the same effect that overclocking has on a normal PC.

Enddo said:
Wouldn't the hardware still have a thermal cut off point where it will just shut down the phone if it gets too hot? It's to my understanding that this hardware shut off point is different than the software thermal throttling. If anything, I think it will just make your device get too hot for comfort than do any real hardware damage to it.
I'm just throwing an educated guess out there though, I honestly have no real proof one way or the other.
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If it gets hot, it will do damage. It can fry the GPU before it even gets to shutdown point. The XBOX 360 for example had the RROD where the constant heat made the solder joints fail (I know the 360 is different but the heat point stands)

scy1192 said:
Stuck my phone in the freezer for a few minutes, took it out, and ran the stability test in AnTuTu which plots the temperature and a benchmark score. Looks like it starts right around 34 degrees (93 Fahrenheit), which really isn't that warm at all. You could get that just browsing around and holding it in your hand.
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The 34 in this case is temp or battery, not SoC. The SoC is probably hit 75 Celcius and that's why CPU throttles. Try HWBot bench instead, it shows not battery but CPU temp. You will see that CPU immediately hits 75°
---------- Post added at 07:53 PM ---------- Previous post was at 07:49 PM ----------
Enddo said:
Wouldn't the hardware still have a thermal cut off point where it will just shut down the phone if it gets too hot? It's to my understanding that this hardware shut off point is different than the software thermal throttling. If anything, I think it will just make your device get too hot for comfort than do any real hardware damage to it.
I'm just throwing an educated guess out there though, I honestly have no real proof one way or the other.
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Afaik they shut down itself if battery hits 60°C or CPU burns to smthn like 105C

HWBot runs parallel... If you want to see your CPU get really hot press the button multiple times. Phone melted!

Why does the snapdragon get so hot. I don't understand what's the point of a fast chip in these phones if they can't run on there maximum lol.... Maybe that's why Intel is gonna take over qualcom one day.
Sent from LG Gangster 3

helikido said:
Why does the snapdragon get so hot. I don't understand what's the point of a fast chip in these phones if they can't run on there maximum lol.... Maybe that's why Intel is gonna take over qualcom one day.
Sent from LG Gangster 3
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It runs hotter because its having to produce all the pixels for the QHD. The same chip in other 1080 phones doesn't run as hot. At times doing normal things like browsing and Facebook etc my phone has throttled down to 1.4Ghz max and the CPU temp is up at 65-70deg C. That's pretty hot.

androiduser991 said:
It runs hotter because its having to produce all the pixels for the QHD. The same chip in other 1080 phones doesn't run as hot. At times doing normal things like browsing and Facebook etc my phone has throttled down to 1.4Ghz max and the CPU temp is up at 65-70deg C. That's pretty hot.
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Its not the only phone. And mine never throttles that low doing normal tasks. It doesn't even throttle at all. However, when playing games or running demanding apps it does throttle.
Also, its not the only phone that runs this hot. All other phones will get hot and throttle just as much when running equally demanding stuff.
So the question was, what's the point of super fast chips when they are going to throttle themselves so fast?
Sent from LG Gangster 3

helikido said:
Its not the only phone. And mine never throttles that low doing normal tasks. It doesn't even throttle at all. However, when playing games or running demanding apps it does throttle.
Also, its not the only phone that runs this hot. All other phones will get hot and throttle just as much when running equally demanding stuff.
So the question was, what's the point of super fast chips when they are going to throttle themselves so fast?
Sent from LG Gangster 3
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I'd recommend that you do a bit of testing,run some apps for 5-10 min then open up a CPU frequency app. The frequency will be be at a low maximum and the temp high. The GPU also throttles, open an app like Faux clock after running some apps and the max GPU value has decreased. Without a doubt the extra pixels are causing this as the SOC is having to work harder to produce them. Its simple physics.B
But anyway, its a specs game. People want faster and better so that's why the SOCs get faster and faster even if they're throttling.

androiduser991 said:
I'd recommend that you do a bit of testing,run some apps for 5-10 min then open up a CPU frequency app. The frequency will be be at a low maximum and the temp high. The GPU also throttles, open an app like Faux clock after running some apps and the max GPU value has decreased. Without a doubt the extra pixels are causing this as the SOC is having to work harder to produce them. Its simple physics.B
But anyway, its a specs game. People want faster and better so that's why the SOCs get faster and faster even if they're throttling.
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The soc is working harder, but like I just said the how soc is still hot even on other phones man.
Run the dead trigger on the s5 and the g3. They both most likely throttle down to the same limit while the fps on the G3 might be a little lower due to the resolution.
But like I just said, what's the point when the damn thing will burn. There is no point in 2.5ghz when your phone can't run at that frequency more than 5 seconds lol.
I remember when I used to run my Galaxy S One full speed. Not one but of throttling. These CPUs have not gotten any more efficient thermal wise.
Sent from LG Gangster 3

helikido said:
The soc is working harder, but like I just said the how soc is still hot even on other phones man.
Run the dead trigger on the s5 and the g3. They both most likely throttle down to the same limit while the fps on the G3 might be a little lower due to the resolution.
But like I just said, what's the point when the damn thing will burn. There is no point in 2.5ghz when your phone can't run at that frequency more than 5 seconds lol.
I remember when I used to run my Galaxy S One full speed. Not one but of throttling. These CPUs have not gotten any more efficient thermal wise.
Sent from LG Gangster 3
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Yeah, I agree there's not much point in having a super fast chip when it throttles so much. Again, people want bigger faster and better and most users wont even know about thermal throtlling.It does seem to be bad on the G3 though. I think I saw another thread that said LG don't use a proper thermal pad also. Don't know about that but to run a 1080 phone with the same chip as a 2k phone then you'll have thermal and performance issues on the 2k Vs the 1080.

androiduser991 said:
Yeah, I agree there's not much point in having a super fast chip when it throttles so much. Again, people want bigger faster and better and most users wont even know about thermal throtlling.It does seem to be bad on the G3 though. I think I saw another thread that said LG don't use a proper thermal pad also. Don't know about that but to run a 1080 phone with the same chip as a 2k phone then you'll have thermal and performance issues on the 2k Vs the 1080.
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The 801 is more than capable of driving a QHD phone. The 800 series are basically created to support up to 4k. And how will give the same performance as a 800 while on QHD. Its not even close to being a big deal. And yeah I saw that same thread. I wonder if it's true.
Sent from LG Gangster 3

androiduser991 said:
It runs hotter because its having to produce all the pixels for the QHD. The same chip in other 1080 phones doesn't run as hot. At times doing normal things like browsing and Facebook etc my phone has throttled down to 1.4Ghz max and the CPU temp is up at 65-70deg C. That's pretty hot.
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That's not totally true, every Note 3 and S5 I tried ran hotter than this G3.
Sent from my LG-D851 using Tapatalk

I see that the layered CPU/memory unit has a metal cover to it, im wondering if a thin thermal pad could be placed between them to conduct heat to the metal cover. Its not much of a heatsink, but it might help a little bit. It may even be possible to put a thin copper sheet on the metal cover to move heat away. It all depends how much room there is under the plastic cover. The only teardown ive seen doesnt make it very clear.

ChrisM75 said:
I see that the layered CPU/memory unit has a metal cover to it, im wondering if a thin thermal pad could be placed between them to conduct heat to the metal cover. Its not much of a heatsink, but it might help a little bit. It may even be possible to put a thin copper sheet on the metal cover to move heat away. It all depends how much room there is under the plastic cover. The only teardown ive seen doesnt make it very clear.
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It could possibly cause other issues with other components due to heat transfer?

ChrisM75 said:
I see that the layered CPU/memory unit has a metal cover to it, im wondering if a thin thermal pad could be placed between them to conduct heat to the metal cover. Its not much of a heatsink, but it might help a little bit. It may even be possible to put a thin copper sheet on the metal cover to move heat away. It all depends how much room there is under the plastic cover. The only teardown ive seen doesnt make it very clear.
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Suggest you to read this http://forum.xda-developers.com/showthread.php?t=2730641
---------- Post added at 06:13 PM ---------- Previous post was at 06:11 PM ----------
Skizzy034 said:
That's not totally true, every Note 3 and S5 I tried ran hotter than this G3.
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