Database Users

Overheating?!

Im not sure if this is normal but the cpu temperature after like 5 mins of use always goes up to 30 degrees is this normal? I'm not overclocking and not doign much but you can feel that the battery gets real warm...
Do you guys experience the same?

CPU temperature of what device?
30C is low or normal for most PCs, and though I am not sure about mobile devices in some parts of the world it is room temperature this time of year.
For a better (more specific) answer please write what device you are measuring the temperature for and what software you are using to do it.
P.S.
The feel of the battery has nothing to do with CPU temperature. They often get warm specially while charging.

On my prophet, if I charge it, OC it and use all the radios (Bluetooth,wifi) and do processor intensive stuff like watching a video, battery status tells me it's at about 40... I haven't noticed any damage, but I only do things like this very occasionally. I don't think it should be a problem although if the battery gets too hot it will degrade.

allright im using htc p4350 Herald and I'm measuring with battery status pro...
But it might just be fine if l3v5y says somethin about 40 degrees...

I would try and keep the temp down as it will last longer running cooler, but I don't think it will impact too heavily.

Nexus 6p Cold bug

Seems the Nexus 6p has a cold bug. First phone i seen this in.
So i been doing some overclocking and bench marking on a few devices. The Nexus 6p has shown some strange behavior. When i had the phone chilled and ran some benchmarks the battery would drop drastically. Restart and all that did nothing. The batt. stayed at 39% for about 2 hours with some heavy use. Charged it back up no issues. Did it again and it did the same thing. Took my turbo 2 to an even lower temp and that was fine it did not have this.
Something you have to worry about? Nope not unless you are out in Alaska or taking a trip to the artic circle. However if you do this could cause you some issues.
Tested on a stock room and kernel. As well as a purenexus and elemental x combo. Same outcome.
Again not really an issue. And the Nexus camera visor and display survived the -40c freeze and back to room temp test. Attached is a pic of the massive drop

Not sure why the Droid Turbo didn't demonstrate this same behavior, but extreme cold temperatures definitely have an impact on lithium ion batteries. Perhaps the material of the Droid Turbo insulates the battery a bit better than the aluminum on the 6P?(pure speculation there - science geeks, feel free to rip that one apart)
I've experienced the same thing with my DSLR (Nikon D80) when shooting in the cold.
Sent from my Nexus 6P using Tapatalk

Devhux said:
Not sure why the Droid Turbo didn't demonstrate this same behavior, but extreme cold temperatures definitely have an impact on lithium ion batteries. Perhaps the material of the Droid Turbo insulates the battery a bit better than the aluminum on the 6P?(pure speculation there - science geeks, feel free to rip that one apart)
I've experienced the same thing with my DSLR (Nikon D80) when shooting in the cold.
Sent from my Nexus 6P using Tapatalk
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Yeah the turbo 2 was even exposed to cooler temps longer. And its not that the capacity was lost. After the bench it would stay at that + for a few hours before it started going back down. So when i started at about 74% after it still had 74% less just android was saying that it was lower. I still managed to get a full charge out of it. Not an issues just a omg my batt is almost dead. Fallowed by omg my battery has been at this % for a few hours.

-40°C isn't really common weather and is definitely out of normal range of temperatures. I live in a area where it gets cold (-30°C) during wintertime, I don't really use phone in a such coldness (my fingers would freeze pretty fast anyway.)
I once answered phone in -25°C (current phone at the moment was Sony Ericsson W910i) I talked for 15 minutes and my battery went from 100% to 21% and shut down moment after the call ended.

Don't all batteries exhibit fluctuations in total output in extreme situations high or low? I use an iphone in a work truck that is left outside in 20f to 30f temps and that thing is crazy swinging from 100% charged when I leave it in truck to dead in one night in cold temps.
Sent from my Nexus 9 using Tapatalk

is there a particular reason you guys do this stuff?

Soulfly3 said:
is there a particular reason you guys do this stuff?
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So we don't have to.

As an aside, the phones operating temp range.
http://imgur.com/aR9JMk7

JoshuaMh said:
So we don't have to.
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Why would we 'have to'?

Stbrightman said:
Why would we 'have to'?
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Perhaps gives an endurance threshold for those of us hiking in Alaska, or climbing an icy peak, ect.

Stbrightman said:
Why would we 'have to'?
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I think it was a funny
Sent from my Nexus 6P using Tapatalk

My nexus 6P sorta died on me today, it was stored in my GF's bag, we were outside, 0F, for like an hour. When I go to take my phone, won't turn on, tried plugging it in, nothing.. could the cold weather (not so cold) have killed my nexus 6P ? Anyone has had this problem ?

I live in northern Finland and I have experienced this kind of behavior with my 6P lately. The battery dies suddenly under -10 C degrees if I keep it in my pants pocket. This is daily problem so have to wear my phone in wool mitten and then pocket it.
I think this started right after 7.1 update. My phone is 12 months old so it might be the battery losing its best edge or simply software feature/bug.

The battery model uses inputs from current flowing in/out in the battery, outter voltage and battery temperature sensors and calculates Open Circuit Voltage leading to the estimated State Of Charge (by use of a 3 degrees polynom)
As any resistor, the internal battery resistance will vary depending on temperature. So will the OCV calculation.
All these parameters are linked non linearly and the models are done within temperature ranges (different coefficients for say different temperatures). If temperature exceeds thresholds ( /sys/class/power_supply/bms shows a nominal range of [10 degC, 45 degC] ), the SoC will not be computed.
If temperature exceeds thresholds or SoC varies too widely, the battery current will be downlimited, meaning it won't charge as expected or could shutdown for safety reasons.
If battery temperature goes under 5 degC, the SoC is considered invalid.
As such when starting again the device within this range the SoC will be calculated again correctly and the device will stay on.
There are also high/low safety thresholds which will instantaneously shut off the device (I think they are stored in the Qualcomm IC so I can't see these values).
So while the battery can probably work fine under 5 degres C, the SoC won't be calculated properly. You can also get some feedback from the known battery health in /sys/class/power_supply/battery/health (Good, Dead, Warm, Cool, Cold, Overheat, ...)
I've gathered this information from the Qualcomm IC driver source

Sound like a Overclocking CPU with Liquid nitrogen haha.

This just happened to me today. I was out skiing and temps were -10 f. Phone shut off in less than an hour after starting from 100%. Went back inside, warmed up the phone and the battery was stuck at 39%. I moved my phone to an interior pocket closer to my body and didn't have a problem for the rest of the day.
As a avid skier, I can say I've always had extreme cold weather issues with phones, but the Nexus 6p is definitely the most severe.
FYI I'm on 7.1.1

This happened to my Nexus 6 today. I was in the garage (non heated) working on my car and had my phone sitting on a box next to me. It was about 30°F and I grabbed my phone to send a picture of something to my friend. As soon as I launched the camera it shut down. It booted instantly after pressing the power button, but after being on for about 15 seconds the battery percentage displayed in the status bar suddenly went from 51% to 0% and it shut down again. After bringing it inside to warm up my battery was back to 50%.
I've also taken my phone snowboarding in much colder temperatures and never had this issue. Even while using it on the chair lift where it's directly exposed to the cold and wind it's never shut down.
The only thing that has changed between past usage in cold weather and today is the version of Android I'm using. Unfortunately I'm too lazy to revert to 6.0.1 to see if that solves the issue since I just did a clean install of 7.1.1 about 2 days ago...

What count is the battery temperature not the ambiant one. You can use "cool tool" or wharever app to display that. If you're rooted you can even check the health file I mentionned (to see if it's Cool or even Cold from the model perspective).
The are linked by discharge rate.
The theorical unusable capacity will increase at low and high temperature but also with discharge rate. So if you are at these extreme temperatures, you could try to lower the discharge rate as much as you can by disabling all what you don't need (sync, lte).
Anyway at -23 degres ambiant your battery was maybe at -10 which is outside of its theorical range. We don't know the practical performance at these temps. I'll have to check again to confirm the low temp threshold at which the SOC is not calculated (think 5 degres that is ambiant 0 or -5). Could be that the battery is ok but the software lacks a lookup table at these ranges. There could be a reason. Anyway, I would try to preserve the battery from these temp if you can.

I have the same issue - but in +3 or +4C degrees. The battery went from 60% to zero in 15 min.

NotEnoughTECH said:
I have the same issue - but in +3 or +4C degrees. The battery went from 60% to zero in 15 min.
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Ambiant or battery temperature? If the former, you'll need to know what the battery temperature was. That's the only thing that matters here. I guess you were talking about ambiant so the device once switched on could be at like 8 degrees so I'm surprised about your results.
I use Cool Tool but you can also use any other app like... Battery. What's relevant is battery temp AND battery health (Good, Cool, Cold ).
I've just put my phone in the fridge for some testing. Should be around 4 degrees also

Normal temperature?

Hello, what is the normal temperature for s8 when not using and when actively using it? Mine is around 30 degrees when I unlock it after not using for 10-15 minutes, and 35-37 when actively using (music, browser, etc). Is that ok?

First of all what is your ambient temperature? Secondly is this your CPU temp or batt. temp? Under heavy load CPU can go up to 70-90C before it starts throttling, battery shouldn't go much above 40-45C, but if you live in Las Vegas or Phoenix, this is how hot it gets outside, so phone will reach those temp even when shutdown, if you leave it outside.

pete4k said:
First of all what is your ambient temperature? Secondly is this your CPU temp or batt. temp? Under heavy load CPU can go up to 70-90C before it starts throttling, battery shouldn't go much above 40-45C, but if you live in Las Vegas or Phoenix, this is how hot it gets outside, so phone will reach those temp even when shutdown, if you leave it outside.
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Thank you foe explaining, Battery temperature is 37 when I amactively using phone. I live in Moscow, right now we have around 5 degrees Celsius. Don't know how to get cpu temperature.

I would imagine you're using your phone inside a house, with temp. probably around 20-25C. Now I looked at battery statistics on my phone and it seems my phone's battery never went above 40C in the past 2 weeks. I don't think 37C you got is something to worry about yet, but if your battery is 30 even at idle inside of 20-25C room??, you may want to look into why your phone is running, when you're not using it. Another possibility is that your temp. sensor is miscalibrated and it shows little high. In other words, when your phone is not being used, it should be in deep sleep mode and battery should be withing couple degrees your room/ outside temperature, depending where you are.

pete4k said:
I would imagine you're using your phone inside a house, with temp. probably around 20-25C. Now I looked at battery statistics on my phone and it seems my phone's battery never went above 40C in the past 2 weeks. I don't think 37C you got is something to worry about yet, but if your battery is 30 even at idle inside of 20-25C room??, you may want to look into why your phone is running, when you're not using it. Another possibility is that your temp. sensor is miscalibrated and it shows little high. In other words, when your phone is not being used, it should be in deep sleep mode and battery should be withing couple degrees your room/ outside temperature, depending where you are.
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Can you please advice any app to see what's running when phone is in deep sleep? I have a custom Rom, and I noticed increase of temperature after last update (or maybe I installed some root software that causes it)

Mine does not seem to heat up much at all, it is about room temp while playing games and what not. S8+ ATT

Do you have root? if yes, wakelock detector should show you what is keeping your phone waking up.
If not, 3C tools has whole suite of applications including nice battery manager, it keeps log of your battery charge/ temp etc every 10min, there is apps manager etc.

Have 2 days s8, same settings usage than my s7edge, and it's getting hot, I don't know the previous update, because i update and reset before use the phone.
But with Bluetooth on link to the car, and reading already went to 41 degrees its to much compared to s7.
Maybe I need to change it.

Overheating problem on one plus 5 ?

So, I noticed that When gaming (especialy with game offering 60 Fps mode) the phone will freeze and then goes into reboot even when played on cold room
from CPU temp apps, it seems when the temperature hit 40 centigrade. the phone shut down
Anyone else have this kind of problem ?
is bellow 40 centigrade is the safe limit for this phone ?
for all its awesome spec it kind restrictive for use gaming

This is by far the coolest device I've ever owned, no heat no matter what I throw at it. What does your setup look like? (ROM, kernel, etc.)

Its basicly stock one. since I just got it 2-3 days ago
Im testing it to run some CPU intensive games (60fps)
when the temperature reach 40 centigrade. it shut down
on normal usage it is quite cold.
but it seems the thermal threshold were quite low, my old HTC might also throttled down at 40 centrigade
but it dont shut down until 50 or 51 centrigade.
1+ 5 dont thorrtled but instead goes straight into shutdown
my country ambient temperature were quite high due to located near equator (30 centigrade avg, with 35 centrigade being common on daylight)
so without air conditioned room, I found it can become overheated - rather quickly

only had overheat problems using camera related chat apps (kik) and in 110 Fahrenheit degrees in CA USA

humustz said:
Its basicly stock one. since I just got it 2-3 days ago
Im testing it to run some CPU intensive games (60fps)
when the temperature reach 40 centigrade. it shut down
on normal usage it is quite cold.
but it seems the thermal threshold were quite low, my old HTC might also throttled down at 40 centrigade
but it dont shut down until 50 or 51 centrigade.
1+ 5 dont thorrtled but instead goes straight into shutdown
my country ambient temperature were quite high due to located near equator (30 centigrade avg, with 35 centrigade being common on daylight)
so without air conditioned room, I found it can become overheated - rather quickly
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Might be a bit of an extreme solution but try doing a factory reset and see if that helps. If not, contact OnePlus support and see if you can get an RMA started. I say that because my device stays cool even on the hottest days of where I am.

rickysidhu_ said:
Might be a bit of an extreme solution but try doing a factory reset and see if that helps. If not, contact OnePlus support and see if you can get an RMA started. I say that because my device stays cool even on the hottest days of where I am.
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I agree with the RMA solution, something isn't right because I can do anything on this phone and it never gets hot. Even when it's 99 degrees Fahrenheit with 70% humidity here in Ohio.
I've done some seriously intensive gaming and crap on this phone, and I cannot get it to overheat.

The snapdragon 835 is the coolest phone processor, you don't have any overheating issue, it must be something else. When you say 49° are you talking about the cpu, battery, skin temp?

Naprzod said:
The snapdragon 835 is the coolest phone processor, you don't have any overheating issue, it must be something else. When you say 49° are you talking about the cpu, battery, skin temp?
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CPU temp record its 40 centrigade when device shut down
both battery and CPU were at similiar temperature (+- 2 degree)
rickysidhu_ said:
Might be a bit of an extreme solution but try doing a factory reset and see if that helps. If not, contact OnePlus support and see if you can get an RMA started. I say that because my device stays cool even on the hottest days of where I am.
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Ill try both, maybe the unit I got somewhat defective

humustz said:
CPU temp record its 40 centrigade when device shut down
both battery and CPU were at similiar temperature (+- 2 degree)
Ill try both, maybe the unit I got somewhat defective
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Cpu at 40° while gaming is really low, some phones hit 85°, of course they will throttle after that.

Naprzod said:
Cpu at 40° while gaming is really low, some phones hit 85°, of course they will throttle after that.
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yeah. Thats why when the phone shut down after reach 40 centigrade.
its confusing since the thermal threshold should not be that low

same problem here
freez then reboot in heavy games
temperature around 40-50
factory reset doesnt help

Heating problem

My phone gets warm when charging (Only wifi was connected, I was not using the phone) or when I watch a movie for a long period of time. I'm using the charger given with the phone. It's the 3-32 (48MP) variant. I'm also using the plastic back cover given with phone. Is this normal? If not what's the solution?

don't panic it's totally normal

chazy chaz said:
don't panic it's totally normal
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Also, I used the Stress test on Antutu Benchmark. At that time Battery temp was 42 degree Celsius and CPU temp sometimes spiked upto 71 degree for a second or two then dropping back to somewhere around 50 degree. Is this also normal?

you have to check which app is using that much CPU .. benchmark apps do stress the phone, but daily apps usually don't .. i found this afternoon that 2 apps (xiaomi framework and another one) use so much cpu so i removed them .. it improved my battery considerably