Database Users

Battery Temp/CPU Temp

I have a feeling that the battery temp reading we see on our phones is actually the cpu temp or motherboard temp
I ran setcpu stress-test for about 30 minutes (phone unplugged) and the temperature got to nearly 50 degrees Celcius
Feeling the top middle area on the back of the phone (and the same area on the screen on the opposite side) that area feels hot, the battery however is stone cold.
So... Battery Temp = cpu temp?

Anyone got an opinion on this? Its important for the overclocking crowd
Sent from my GT-I9000 using XDA App

I can tell for sure that battery and CPU temps is always the same but where is the sensor?? On the battery or the CPU?
If I was designing this phone I would put it on the CPU as it is more likely to produce heat if overused.
However I just experience a drastic temp raise from 33C to 41C in 1 min just after pluging in the phone. I was using it but noting eavy. I was only changing some startup setting with an app called Autorun Manager. So it might be related to battery but according to what you said it is more likely to be located on the CPU.

I currently have one of those extended batteries and tmeperature rises to 52 C after 10-15 min of playing gameloft hd games. I have measured phone temperature with an infra red thermometer and battery was 30-32 degree and upper part of the phone (between sim card and camera seemed to be as high as 49 degree) so the sensor must be on the cpu or motherboard, not anywhere close to the battery.
Unless battery gets hot inside and is cold outside for some reason. And sensor is simply inside the battery like in a laptop battery (google: 'How Lithium-ion Batteries Work' and open first result)
In my personal opinion manufacturers wouldn't waste space inside the battery for additional sensor that looks pretty big on the website above. Furthermore a hot battery would be hot throughout its casing too.

Which sensor you people are talking about?

buntoo said:
Which sensor you people are talking about?
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Click to collapse
Temperature sensor. Download temp+cpu from store and you'll know

Battery Temperature Norms

what are the normal battery temp levels for the galaxy tab? Mine goes from around 28 deg Celsius idle to 43 deg Celsius when charging or prolonged use. Are these safe operating levels or is it getting too hot? At 40 degrees i can already feel the back panel getting warm so im a bit worried about the processor. Im not overclocked and even undervolted by 100mV.
Sent from my undervolted Galaxy Tab running Overcome 1.3

http://forum.xda-developers.com/showthread.php?t=845458&page=2
http://forum.xda-developers.com/showthread.php?t=986067&page=2
Trust me, samsung is giving us all a total headache. For once, my battery temperature went to 53degrees Celsius. I laughed so badly when i saw that.

pawces said:
what are the normal battery temp levels for the galaxy tab? Mine goes from around 28 deg Celsius idle to 43 deg Celsius when charging or prolonged use. Are these safe operating levels or is it getting too hot? At 40 degrees i can already feel the back panel getting warm so im a bit worried about the processor. Im not overclocked and even undervolted by 100mV.
Sent from my undervolted Galaxy Tab running Overcome 1.3
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Click to collapse
Just curious, is your battery charging and discharging normally?

Mine's going from 14'C (outdoors) to 35'C max. (playing while pluged). Normal voltage.
Sent from my GT-P1000 Overcome 1.4.2 using XDA Premium App

The most mine ever goes to is about 36 C. both in use and in charging. Overclocked to 1.2ghz

It chatges and discharges normally, i get abot 26-30 hours out of it with average use. I do live in the Philippines though so that may be the normal temp for me. Just want to know what the danger zone is for his device when it cones to temperature.
Sent from my undervolted Galaxy Tab running Overcome 1.3

Mine goes to 37 38 @and 27 idle
Sent from my GT-P1000 using Tapatalk

Normally it is within range between 27-28 and 38 (C) on my overclocked up to 1.2GHz . When charging and running in the same time - temperature may be a bit higher, because the battery becomes warmer during charging. Important factor is software used for measuring, I use 2 different applications and always compare the readings.

Nexus 4 Heating?

Hello, I've had my nexus 4 for about a week and a halfish now and I've noticed that the phone is running pretty warm after even just light usage. I download a battery temperature reader and a CPU temperature measurer. At Idle the batter temperature is at about 33-36 degrees Celsuis. And the CPU temperature at Idle is usually in the lower 40's at idle. Are these Temperatures to high?
Also When I plays games or use any apps for a just a few minutes the battery Temperatures get at around 40 degress C and the CPU temp is usually around the 45-50 area. Again Are these temperature to high?
I would really appreciate if anyone could give me useful help on this issue I'm having with my phone.
Is this normal for a nexus 4?
Should I be concerned?
Should I get a new nexus 4?

Andman012 said:
Hello, I've had my nexus 4 for about a week and a halfish now and I've noticed that the phone is running pretty warm after even just light usage. I download a battery temperature reader and a CPU temperature measurer. At Idle the batter temperature is at about 33-36 degrees Celsuis. And the CPU temperature at Idle is usually in the lower 40's at idle. Are these Temperatures to high?
Also When I plays games or use any apps for a just a few minutes the battery Temperatures get at around 40 degress C and the CPU temp is usually around the 45-50 area. Again Are these temperature to high?
I would really appreciate if anyone could give me useful help on this issue I'm having with my phone.
Is this normal for a nexus 4?
Should I be concerned?
Should I get a new nexus 4?
Click to expand...
Click to collapse
I'm assuming your Nexus 4 is a newer one (rev. 11). Nexus 4s have been known to run quite hot. My rev. 10 is at 42 C coming out of sleep without use, earlier when I played Need for Speed, it got to 60 C. It seems to be normal for mine, although it does get uncomfortably hot.

Andman012 said:
Hello, I've had my nexus 4 for about a week and a halfish now and I've noticed that the phone is running pretty warm after even just light usage. I download a battery temperature reader and a CPU temperature measurer. At Idle the batter temperature is at about 33-36 degrees Celsuis. And the CPU temperature at Idle is usually in the lower 40's at idle. Are these Temperatures to high?
Also When I plays games or use any apps for a just a few minutes the battery Temperatures get at around 40 degress C and the CPU temp is usually around the 45-50 area. Again Are these temperature to high?
I would really appreciate if anyone could give me useful help on this issue I'm having with my phone.
Is this normal for a nexus 4?
Should I be concerned?
Should I get a new nexus 4?
Click to expand...
Click to collapse
completely normal. right smack in the middle of the range of normal. remember, human body temperature average is 37C or 98.6F. when you use your device, the temp will go up when you use a cpu intensive game, the temperature will get even hotter. this all also depends on the surrounding air temperature. the warmer it is around, the warmer the device will get or idle.

Normal. Because the back is made of glass, it absorbs the heat and you feel it more than other phones.
Sent from my Nexus 4 using Tapatalk 4 Beta

Lol My Nexus S get's warm on idle because of the hot air around. haha my nexus 4 coming in 3 days let's see!

This btonons
Hmm, That seems weird, if the phone throttles you at 37 degrees shouldn't my phone not be idling at that temperature, and the my front screen seems to get warm after slight usage to. And looking on other forums people with a stock nexus 4 said that there phone idles around mid twenties, not the lower-mid thirties.

sidnoit22 said:
Lol My Nexus S get's warm on idle because of the hot air around. haha my nexus 4 coming in 3 days let's see!
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Click to collapse
I hope you like it man, besides the warmness of the phone it's pretty sweet!

Andman012 said:
Hello, I've had my nexus 4 for about a week and a halfish now and I've noticed that the phone is running pretty warm after even just light usage. I download a battery temperature reader and a CPU temperature measurer. At Idle the batter temperature is at about 33-36 degrees Celsuis. And the CPU temperature at Idle is usually in the lower 40's at idle. Are these Temperatures to high?
Also When I plays games or use any apps for a just a few minutes the battery Temperatures get at around 40 degress C and the CPU temp is usually around the 45-50 area. Again Are these temperature to high?
I would really appreciate if anyone could give me useful help on this issue I'm having with my phone.
Is this normal for a nexus 4?
Should I be concerned?
Should I get a new nexus 4?
Click to expand...
Click to collapse
for hard working with QuadCore it s normal to get ~40 C quickly
But after 40C i think it s not normal and it s better to ask official service

Andman012 said:
Hmm, That seems weird, if the phone throttles you at 37 degrees shouldn't my phone not be idling at that temperature, and thetfront screen seems to get warm after slight usage to. And looking on other forums people with a stock nexus 4 said that there phone idles around mid twenties, not the lower-mid thirties.
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look at the time they were posted. now its warmer eveeywhere. and again, human body temp is 37C. you have a quad core phone, it WILL get hot at times, that is normal. pushing the device, you might even see 70C or 75C.

simms22 said:
look at the time they were posted. now its warmer eveeywhere. and again, human body temp is 37C. you have a quad core phone, it WILL get hot at times, that is normal. pushing the device, you might even see 70C or 75C.
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Click to collapse
Hmm okay I have pushed the phone and the highest CPU temp I reached was about 60ish. I'm not exactly worried about how hot it gets, it's just how fast it gets hot, it seems a little odd that just running facebook and twitter for a few minutes can get the battery temperature up to 40 degrees celsius.

x102x96x said:
for hard working with QuadCore it s normal to get ~40 C quickly
But after 40C i think it s not normal and it s better to ask official service
Click to expand...
Click to collapse
That sounds similar to the results that I have found on the web, people said that to get there battery temperature up to 40 degress they have to push the phone, mine gets there just by opening a few apps.

If you want to cool it down and you are happy with messing about with your phone, try undervolting the CPU. Although I tend not to check the temperature, my phone (UVd by around -150) feels far cooler; playing Real Racing it doesn't get as warm as simple browsing would on stock.
Sent from my Nexus 4

Tom540 said:
If you want to cool it down and you are happy with messing about with your phone, try undervolting the CPU. Although I tend not to check the temperature, my phone (UVd by around -150) feels far cooler; playing Real Racing it doesn't get as warm as simple browsing would on stock.
Sent from my Nexus 4
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Click to collapse
I have heard of this, but I'm more focused on how the temperature should be on this phone untampered. Rooting and tweaking kind of scares me a bit.

Andman012 said:
That sounds similar to the results that I have found on the web, people said that to get there battery temperature up to 40 degress they have to push the phone, mine gets there just by opening a few apps.
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Click to collapse
Try faux kernel and undervolt t by -125 my friend using that combo and its mostly 25degrees.
Sent from my Nexus S using Tapatalk 4 Beta

Andman012 said:
Hmm okay I have pushed the phone and the highest CPU temp I reached was about 60ish. I'm not exactly worried about how hot it gets, it's just how fast it gets hot, it seems a little odd that just running facebook and twitter for a few minutes can get the battery temperature up to 40 degrees celsius.
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Click to collapse
40C is not hot. get that out of your head. idle temp will depend on the air temperature around you. yesterday was 91 in nyc, my phone was idling between 39-42C. stick your hand in 40C water, itll barely feel warm.

simms22 said:
40C is not hot. get that out of your head. idle temp will depend on the air temperature around you. yesterday was 91 in nyc, my phone was idling between 39-42C. stick your hand in 40C water, itll barely feel warm.
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Click to collapse
40 C is 104 F degrees, That would feel more than just "barely warm"

Andman012 said:
40 C is 104 degrees, That would feel more than just a "barley warm"
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On a surface like metal it would, but not in water. That said, the back of the phone isn't water but I'm sure the temperature of the back of the phone is lower than the CPU
Sent from my Nexus 4

Tom540 said:
On a surface like metal it would, but not in water. That said, the back of the phone isn't water but I'm sure the temperature of the back of the phone is lower than the CPU
Sent from my Nexus 4
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Click to collapse
Couldn't agree more, The back of the phone I wouldn't say it HOT, but it is definitely very warm. But I'm not talking about how hot the phone feels. I'm trying to ask about the internal temperatures and if it's normal for it to heat up so fast.

Andman012 said:
Couldn't agree more, The back of the phone I wouldn't say it HOT, but it is definitely very warm. But I'm not talking about how hot the phone feels. I'm trying to ask about the internal temperatures and if it's normal for it to heat up so fast.
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Click to collapse
again. this is normal. 104F would not feel more than slightly warm water.
the glass in the back of the phone is there to draw out the heat from the phone. its glass, and will feel warm. if you have problems with 40C, then i would recommend that you buy a dumb phone. my nexus 7, galaxy nexus, and nexus 4 all idle a bit warmer now than in winter. 40C is very normal.

simms22 said:
40C is not hot. get that out of your head. idle temp will depend on the air temperature around you. yesterday was 91 in nyc, my phone was idling between 39-42C. stick your hand in 40C water, itll barely feel warm.
Click to expand...
Click to collapse
Its normal, have a look at the graph!
Sent from my Nexus 4 using xda premium

[Q] G2 Operating Temperature

Hello guys, well i've read every single post about the phone's working temperature on the forum but i just can't figure if my phone is working fine or not, because mostly everyone on the post refer to the temperature as "warm" "bit hot" etc, which is very subjective. I'm a bit worried because my phone (D806, running stock ROM) gets quite warm after like 20 mins of surfing the web through wifi, or after chatting a bit on whatsapp. By "a bit warm" i mean between 32-34 deg centigrade, refering to battery temperature of course. Now, after reading everything i can't figure out if this is a normal temp for this phone or not. I can also say that the min temperature i could measure (with just cell radio on, in idle state) was 25 degrees. The max temperature i could reach (running antutu for like 4 times one after another) was 45 degrees. Now, i'm confused because someone in a post said the max temperature he got was 34 degress, and his usual temp was 24 degrees. I couldn't even get 24 with the phone completely idle. So, i'd like to know your experience, since i can still exchange my phone for a new one if it's defective. Thanks in advance.

Hi,
There is nothing wrong with your battery temp. You can also check you CPU temp (nope, maybe you will have scared )... Fortunately you didn't saw your CPU temp during your 4 Antutu runs...
The temperature (CPU or battery) depends of your room temperature and your current use. You said yourself with 4 Antutu runs the temperature increase, nothing abnormal even for the battery..., same thing after browsing for 20 minutes even in wifi.
A guy had 24°C battery temp in idle and 34°C max, well, what was the room temperature? Nothing running in background? What he was doing?
I mean even in idle, screen off, your phone can do a lot of things especially if you have a rogue app keeping the CPU busy so there could be a little more heat.
In any case there is a thermal protection (thermal throttling) to prevent damages in case of "overheating" for both CPU and battery the CPU freq decrease according to the temp. Even the screen brightness can be automatically lowered. In last case the phone shutdown if a high temperature is reached (about 100 °C for the CPU). The max battery temp should be about 50°C, I don't remember exactly.
Don't worry, as you reported there is nothing wrong with your tempetatures... Same thing if you take a look at your CPU temp, can be arround 70°C in heavy use, even a bit more in really heavy use.
We have a quadcore device running at 2.26 Ghz, all is enclosed without thermal cooling... it's normal to have "heat" with all the components.
Use your phone and profit, no need to monitoring each minutes your temperatures. You confused yourself by only reading the °C, not how or why it is compared to the other posts you read. Each user have different room temperature, use, settings, etc... you can't have the same temperature as xx user. An average yes, I agree and here you are in the good average...
Sent from my LG-D802 using xda premium

Viking said it all. Nothing abnormal there, but anything over 30 degrees is elevated temperature and should be avoided
Sent from my LG-D802 using XDA Premium 4 mobile app

vPro97 said:
Viking said it all. Nothing abnormal there, but anything over 30 degrees is elevated temperature and should be avoided
Sent from my LG-D802 using XDA Premium 4 mobile app
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Click to collapse
Guys,thanks for your responses. I still don't get something tho because one of you said that my temp is normal (about 32 deg. while browsing), but then you say that anything over 30 deg should be avoided, then i don't quite understand. My phone gets between 30 and 35 deg while regular browsing, it's mostly a bit over 30 all the time i'm actually using it, SO, that's wrong or not? That's the part i don't quite understand.

I guess vPro97 made a typo or he was sarcastic?
Over 30°C for the battery temp is not dangerous at all, about 45°C also. Imagine people living in a really warm country when they use their phones...
Don't worry, already said, there is absolutely nothing abnormal with your temperatures, nothing... all is fine regarding your use...
Don't panic
Sent from my LG-D802 using xda premium

viking37 said:
I guess vPro97 made a typo or he was sarcastic?
Don't worry, already said, there is absolutely nothing abnormal with your temperatures, nothing... all is fine regarding your use...
Don't panic
Sent from my LG-D802 using xda premium
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Click to collapse
Right, thanks a lot again guys!:good:

just make a grilled cheese or scrambled eggs on it. Let it vibrate while cooking for extra pasazz
the slick back then not that bad right

[Q] heat issues

my s5 gets hot very quickly.. when i use it for 10-15mins (very light use checking mail and browsing).. it gets warm... when on moderate use (transfering lots of stuff on sdcard) it gets hot .... and when using a lot of apps (not even gaming).. it gets really really hot.
I installed cpu temp and I get temperatures like 60 degrees... sometimes i even get warning it's over 70 degrees.
I am on kitkat neatrom. will lollipop help with the heat? Is it actually normal? My friend has galaxy s4 mini and it does not get hot.. only warm under similar heavy load

yeahman45 said:
my s5 gets hot very quickly.. when i use it for 10-15mins (very light use checking mail and browsing).. it gets warm... when on moderate use (transfering lots of stuff on sdcard) it gets hot .... and when using a lot of apps (not even gaming).. it gets really really hot.
I installed cpu temp and I get temperatures like 60 degrees... sometimes i even get warning it's over 70 degrees.
I am on kitkat neatrom. will lollipop help with the heat? Is it actually normal? My friend has galaxy s4 mini and it does not get hot.. only warm under similar heavy load
Click to expand...
Click to collapse
No is not normal.Not even in games. When i was on kit kat hw accelerate h265 1080p movies only played in sw mod and then my cpu never got over 70 (and this is a ****ing cpu intensive **** for 1-2 h) and after finish the movie temp got lower immediately.
Don't use kernel others than stock!

I am on stock... I will try a stock rooted lollipop rom... I get 70 degrees at times (some peak..it's not continous i think ).. average max temp is 61 degrees celcius... is this dangerous? It's quite hot to touch the screen. Meanwhile I underclocked my max cpu freq to see how it performs.

can someone install stabilitytest and do the classic test for 5-10mins and tell me what battery temp they get? I get 36.1 - 37.5 degrees but i underclocked my cpu to 1190mhz. I feel the device being warm... top of the phone is warmest
edit: done same test on my old htc desire and the temp gets max at 33.6 to 34.6 but the device does not feel warm at all.. wdf is wrong with the galaxy s5?

It's actually the top part of the screen that is very hot to touch

yeahman45 said:
It's actually the top part of the screen that is very hot to touch
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Click to collapse
I'll do the tests for you. Tell what apps to use (more tests is accurate). give me their google play link and i'll post screenshots

olaruionutadrian said:
I'll do the tests for you. Tell what apps to use (more tests is accurate). give me their google play link and i'll post screenshots
Click to expand...
Click to collapse
Thx man
App to monitor temperature overall
https://play.google.com/store/apps/details?id=com.yanyan.cputemp&hl=en
App to do stress test of the cpu: (try the first test for 10mins)
https://play.google.com/store/apps/details?id=com.into.stability&hl=en

yeahman45 said:
Thx man
App to monitor temperature overall
https://play.google.com/store/apps/details?id=com.yanyan.cputemp&hl=en
App to do stress test of the cpu: (try the first test for 10mins)
https://play.google.com/store/apps/details?id=com.into.stability&hl=en
Click to expand...
Click to collapse
in cputemp, go to changing curve to see the cpu temp monitor.

in cputemp --> settings --> you can enable cpu temp overlay.. it will show you the temp in status bar... can you tell me what do you get when idle and what do you get while doing the stabilitytest. thx

yeahman45 said:
It's actually the top part of the screen that is very hot to touch
Click to expand...
Click to collapse
first (idle with screen open)
http://s7.postimg.org/y2zgi8oa3/Screenshot_2015_01_06_21_44_18.png

Thx! I am interested to know what temperature do you get when doing the stabilitytest ... I get like 70 - 72 degrees when doing the stability test!!!

9 mins
http://s9.postimg.org/5wbx4gsrj/Screenshot_2015_01_06_22_30_45.png
7 mins
http://s9.postimg.org/5wbx4gsrj/Screenshot_2015_01_06_22_30_45.png
2 min
http://s10.postimg.org/eiqralm1l/Screenshot_2015_01_06_22_28_41.png
In my room temp is 24 C. Maybe maters
ok i'll do classic in few mins

Thx can you try the stabilitytest classic test(the first one) plz?

https://docs.google.com/file/d/0B02W5Y8lz9kONFJ5b0VoR2ZVOVE/edit?usp=docslist_api
I ve got some high temps up to 74

olaruionutadrian said:
https://docs.google.com/file/d/0B02W5Y8lz9kONFJ5b0VoR2ZVOVE/edit?usp=docslist_api
I ve got some high temps up to 74
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Click to collapse
Thx for tests! So it does get pretty hot for you too on load but your battery temp is much lower than me. It is 36 to 38 for me undet load maybe thats because i am using a case? Do you feel the touchscreen very hot when doing the tests?
But normal temp is still high for me. It is 46 to 56 degrees doing just light tasks like browsing and gmail. Will try to factory reset. Maybe a nasty app causing it.
Thx again

anyone else having heat issues?are all snapdragon 801 phones that hot? I am considering selling my s5... I only had it for a few months... It's the first flagship device I bought and I am amazed that it has that kind of issues. (I also get a can't wake up issue).. unbelievable...