Develop Bugs

Overheating

So I was wondering what temps you guys are seeing when your phone overheats.
My phone reboots when it hits 37 C, which seems awful low. Anyone else seeing such low reboot temps?

gmichaelow said:
So I was wondering what temps you guys are seeing when your phone overheats.
My phone reboots when it hits 37 C, which seems awful low. Anyone else seeing such low reboot temps?
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Mine doesn't reboot that low, the highest I have seen it go was like 43.7 or something

I've never had my phone reboot due to overheating even at 42°C. Running CM6.01
Sent from my Incredible using XDA App

Hmm, this is getting frustrating. I've begun to reboot at around 37 C. Is there any way to change that number? Anything to reset?

Is that CPU or battery temperature? If battery then the CPU would be much hotter.
Sent from my Droid using XDA App

Battery... but it's weird. The battery temperature gets to 37 C, and then reboot. When I very distinctly remember it before going 45+ C without a problem.
And now I'm bootlooping. Seems to start up, and is still too hot, then reboots again. Anyone have this happen to them? Lower temp reboots?

Sounds like you may have permanently damaged your device, if your battery temp were 40+ degree celsius your CPU temp would be a sustained 15+ degrees hotter. Running your device this hot often certainly could damage it over time.
Sent from my Droid using XDA App

Try a standard or increasing voltage kernel if possible.
Sent from my Droid using XDA App

fivefour said:
Sounds like you may have permanently damaged your device, if your battery temp were 40+ degree celsius your CPU temp would be a sustained 15+ degrees hotter. Running your device this hot often certainly could damage it over time.
Sent from my Droid using XDA App
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No no, my battery isn't that hot for long amounts of time, just, like when I'm surfing for a long time or something. Trying an undervolted kernel now.

Do you have a backup battery that you can try - see if you get the same results? Batteries do occassionally stop working properly.

My phone would reboot when using GPS in the car if it was on the dashboard or mounted - I checked the temperature when it booted and didn't get stuck in a boot loop and it was around 45c.....
I returned the phone to stock and brought it back to vzw, they gave me a new battery, phone still runs somewhat hot even stock.

jp43 said:
My phone would reboot when using GPS in the car if it was on the dashboard or mounted - I checked the temperature when it booted and didn't get stuck in a boot loop and it was around 45c.....
I returned the phone to stock and brought it back to vzw, they gave me a new battery, phone still runs somewhat hot even stock.
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But mine is rebooting at 37-38 C. Which is awfully low. I'm RUU'd, S-oned, and factory-resetted and STILL it happens. So it's a hardware problem.
Gonna take it into a Verizon store and demand a replacement on the spot x]

I can advisr from personal experience on your symptoms that you have one choice ... Return to verizon for a refurb. This is what happens when you have an early incredible with a faulty hardware radio. It gets to the point where it starts trying to compensate and super heats. You must return.
Every other suggestion would be a mask to an existing well known hardware problem.

I once left my phone in a black bag on a hot summer day. It went up to 50 C with no problems. It didn't reboot or anything.

I have one of the original Incredible's from launch day, it is usually around 43-45. Sometimes it gets warmer than that playing games. Never actually had any problems. The hottest it ever gets is on Z rom's. Those things have gotten it to 50 .
I'm on CM7 W/Slayher's 2.6.37 kernel, and it's at 42 just on the home screen. Mind you this is all on stock speeds. My phone doesn't like to overclock. Regardless of kernel. It can go to 1.113 sometimes, but any more = reboot.

On the HTC Incredible site, there is a FAQ which states the maximum recommended operating temp is ~60C.
I'm relatively sure there is no problem with the battery or the CPU doing up to ~90 for awhile because that's a fairly common temp for CPUs and Batteries to withstand. I'm sure that like most batteries , at >~50C it is less efficient, but I doubt the CPU is presented with any problems in that range.
Phones present a unique set of high-temp problems. Cooling sucks in those little enclosed boxes, and manufacturers definitely don't want your hand or ear burned, and are terrified of having a battery burn up in your hand or pocket, so that is probably why 60 is said to be max. I don't like picking up my phone when it's at all hot (~40C or more) but while experimenting with my own kernels and voltages and overclocking, I've had it reboot somewhere around 60C. Was it the temp, or was it overclocked too far? I have no idea, but I lowered both and stopped taking stupid chances with it.
This thing of rebooting at 37C seems nuts, inappropriate, and most likely a defective part, or one of the many services or apps that perhaps does the wrong thing (accesses verbotten memory, bad ptr, etc..)
A bad example for sure, but at work, many of our HP or Dell Racked servers (DL380's etc), are too hot to touch while running. They have enough fans to power a 747, and it just makes it pretty clear that in some cases, processors and other components can run at amazing temps.
--

G3 bricked?

Argg!
I was playing a game on my G3 (UK 16GB) and it got SUPER hot!
It turned off and now will not turn back on. It's stuck on the LG initial splash screen.
I've done all the usual (remove battery, power + volume down, recharge battery etc) but I'm stuck.
Any suggestions before I return it today?
I'm sad ?
Sent from my Nexus 5 using XDA Free mobile app

ShiroEd said:
Argg!
I was playing a game on my G3 (UK 16GB) and it got SUPER hot!
It turned off and now will not turn back on. It's stuck on the LG initial splash screen.
I've done all the usual (remove battery, power + volume down, recharge battery etc) but I'm stuck.
Any suggestions before I return it today?
I'm sad ?
Sent from my Nexus 5 using XDA Free mobile app
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I would say return it man.

Has the phone called back down yet?
Don't try to turn it on until its cooled down.
Take the battery out and leave the back door off for half hour then try again.
Just so we know, did you turn Thermal Throttling off in the hidden menu? If so, this is a prime example of why I have been telling people not to do this.

Lennyuk said:
Has the phone called back down yet?
Don't try to turn it on until its cooled down.
Take the battery out and leave the back door off for half hour then try again.
Just so we know, did you turn Thermal Throttling off in the hidden menu? If so, this is a prime example of why I have been telling people not to do this.
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This thought did cross my mind as well.

Lennyuk said:
Has the phone called back down yet?
Don't try to turn it on until its cooled down.
Take the battery out and leave the back door off for half hour then try again.
Just so we know, did you turn Thermal Throttling off in the hidden menu? If so, this is a prime example of why I have been telling people not to do this.
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Hey Lenny,
I didn't turn Thermal Throttling off. And I would also advise people to not do that.
I've just returned from CPW with a brand new handset! FYI the 28 day replacement policy starts from the day you receive the phone so I was still covered. Just!
I did all the things you suggest. It was stone cold and it still wouldn't get past the LG boot screen. Also the little sparkly animation on the LG letters wasn't playing which suggests it borks out very early on in the boot sequence.
I really hope we don't start to see this more.
Fingers crossed!

ShiroEd said:
Hey Lenny,
I didn't turn Thermal Throttling off. And I would also advise people to not do that.
I've just returned from CPW with a brand new handset! FYI the 28 day replacement policy starts from the day you receive the phone so I was still covered. Just!
I did all the things you suggest. It was stone cold and it still wouldn't get past the LG boot screen. Also the little sparkly animation on the LG letters wasn't playing which suggests it borks out very early on in the boot sequence.
I really hope we don't start to see this more.
Fingers crossed!
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Click to collapse
Good luck with the new phone then.

alright now im starting to worry frying my device. Last time i ran antutu battery test it runs hot. The highest temp that i got is 41.8c on battery temp. It normally runs at 34 to 36 if im playing with it but wont go over 40.. Do you think my device is also running too hot?

SpEaKeRb0xXx said:
alright now im starting to worry frying my device. Last time i ran antutu battery test it runs hot. The highest temp that i got is 41.8c on battery temp. It normally runs at 34 to 36 if im playing with it but wont go over 40.. Do you think my device is also running too hot?
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anything below 50 degrees is not really anything to worry about.

SpEaKeRb0xXx said:
alright now im starting to worry frying my device. Last time i ran antutu battery test it runs hot. The highest temp that i got is 41.8c on battery temp. It normally runs at 34 to 36 if im playing with it but wont go over 40.. Do you think my device is also running too hot?
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Click to collapse
Thats cool,my G3s ran Antutu at 60+deg C and idled at 45-58. Your temps make me wonder if i had faulty units (i had 2 as the first one had a fault).
Edit, just read you said battery temp? You need to measure CPU temp not battery.

Batfink33 said:
Thats cool,my G3s ran Antutu at 60+deg C and idled at 45-58. Your temps make me wonder if i had faulty units (i had 2 as the first one had a fault).
Edit, just read you said battery temp? You need to measure CPU temp not battery.
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That is what i wanted to know... Is there any apps out there that can measure cpu temp accurately? Does our cpu have built in sensor? Batt is heating upto 40c,,, what more in cpu... I wanted to run a full test again after fully charge.

SpEaKeRb0xXx said:
That is what i wanted to know... Is there any apps out there that can measure cpu temp accurately? Does our cpu have built in sensor? Batt is heating upto 40c,,, what more in cpu... I wanted to run a full test again after fully charge.
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Try the app made by Mooncakes on the play store. Just search for CPU temperature its free and graphs temps v cpu usage and speed.

Batfink33 said:
Try the app made by Mooncakes on the play store. Just search for CPU temperature its free and graphs temps v cpu usage and speed.
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Thanks man. Ill try that one

[Q] Way too hot, always

Im having huge problems with cpu heat,regardless of what im running. Here's a screenshot of the worst temp i've seen. (87c during TWRP backup) even right out of the box, i frequently saw temps of 60c and up after 20minutes of gaming (thats even with power saving cpu throttling turned on)
Anyone else run into heat problems? View attachment 3211470[/ATTACH]

Wow.. that's way too hot!
You have stock kernel?
First turn off, wait for cooling down, then startup again to check if still gets hot?
If it does, return it for repair?

kim lab said:
Im having huge problems with cpu heat,regardless of what im running. Here's a screenshot of the worst temp i've seen. (87c during TWRP backup) even right out of the box, i frequently saw temps of 60c and up after 20minutes of gaming (thats even with power saving cpu throttling turned on)
Anyone else run into heat problems? View attachment 3211470[/ATTACH]
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Click to collapse
Presuming you've not rooted (tripping Knox) I'd RMA that sucker. Messing with possible power/heat issues seldom ends well.
Assume you have checked what's running underneath your ROM? Certain apps seem to "hijack" CPU resources until you close them off.

kim lab said:
Im having huge problems with cpu heat,regardless of what im running. Here's a screenshot of the worst temp i've seen. (87c during TWRP backup) even right out of the box, i frequently saw temps of 60c and up after 20minutes of gaming (thats even with power saving cpu throttling turned on)
Anyone else run into heat problems? View attachment 3211470[/ATTACH]
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Click to collapse
Twrp gets hot backing up and installing ROMs. Pretty typical as well as for games also. Custom kernels with CPU multi core savingnhelp with that a tad

more information
I am rooted (stock rom) but the heat issue has bèen going on since b4 root. My kernel ver is 3.4.39 3702705 [email protected] #1 after ejecting the sd card, the temps have noticeably fallen. Weird. Thanks in advance for the replies!!!

And dont do having game youll end up with a frying pan also dont turn off and charge while its hot

[Q] Normal/Excessive CPU temperature for S4 ?

Hi,
I'm using a Canadian Galaxy S4, SGH-I337M.
Rooted, running on Liquidsmooth 4.4.4 ROM. Also has Ktoonsez kernel. It is currently undervolted+underclock a bit, and is stable (I could overclock it, but I don't. No need).
Been wondering for a long time about the operating CPU temperatures of the Galaxy S4... Never had the possibility to do testing with CPU temperatures before. I do have a LG P500 that I have overclocked a ton in the past, still work just fine, but the LG P500 is old and do not support viewing CPU temperature, so it's my first time experimenting with that.
How hot would be too hot for this phone? There are several opinions, but never figured out if I... "minimize" the risks of my actual temperatures, for some reason. My laptop CPU throttle at 85 celcius for instance. While it's a phone, it's completely different.
At night, while connected to charger, it would be pretty cool, at 25-30 degrees when I wake up;
I would say that most of the time, my CPU is running at 50 celsius, and rarely ever exceed 65-70 under normal use, or even gaming. Plus, the CPU is undervolted and a bit underclock, so I do feel like it run cooler than usual.
Quoting Meowmix from Rogers forums:
It varies on the usage of everyone else & how you handle the phone ( cases & such). Also if you are in extreme heat or having the device in direct sunlight.
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So, the case does matter? I do have that Otterbox case which is pretty tight and enclose the phone pretty well, I would believe that the phone would get less.. air.. but I mean, it's just a case, didn't thought it would affect much..?
Quoting Ahmed from AndroidCentral Forums, I would say that I have a quite similar situation.
No, just when i ran AnTutu when it runs the 4 cores at the maximum frequency the temperature is between 80-91c, and at normal use while surfing the internet the temp. 45-55c and the battery reaches 38c after an hour of continuous using.
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I CAN reach 80-90 celsius, but only if I really want it to happen. 38 celsius for the battery is also correct, I never exceeded 41 degrees yet, on any Android phone (I don't know the dangerous battery temps.. But when I reach 40 degrees I try to put it down as fast as possible). With benchmarks, usually at the max frequency, or testing my undervolt with Stability Test, I CAN reach 80-90 celsius, which look really high. Additionally, I would remind that I don't overclock, and the CPU is undervolted so seems a bit cooler.
So on AndroidCentral, this is the reply Ahmed got, from "CR6" user:
I had to use my temp converter to look up & convert them to Fahrenheit. 80-91c equates to 176-195 Fahrenheit and that's extremely dangerous. These temps will not only physically burn you, but will fry your phone if you continue using it at these temperatures. 45-55c equates to 113-131 degrees Fahrenheit, and that is normal under really heavy usage. Optimally, you'd like to keep it at 38-45c. You may have a defective device if you regularly see temps over 80c and I would advise checking on a replacement.
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THAT dangerous? Well, I don't phisically feel the heat - I do feel it, but since I have that phone case, that doesn't hurt at all. But like I mentionned, I never reach 80 celcius or more unless doing benchmarks. Usually I never exceed 65-70. But still it left me wondering - Why does Android allow such high temperatures in first place? Isn't the system suppose to shut down at some point in case of danger, and when?
I've also experimented with thermal throttling in the Ktoonsez kernel, and the throttling values of the ROMs. Touchwiz Stock ROM with DVFS disabled, seems to throttle at 80 celsius, look decent. Liquidsmooth AOSP ROM, stock kernel, does not seem to throttle at all (Huh)! Once, and that was exceptionnal, I've reached 100 CELSIUS using Wifi, connect to a charger after like 2 hours, room temperature was very warm, was not surprised, but when I noticed I reached 100 CELSISUS, I was WOAW, I should shut down. I did reached 100 degrees again, using Stability Test at max frequency after a few minutes. Needless to say I manually stopped the test, because I had no idea how much heat the phone could handle...
So been aware of this, "Ktweaker" app, for the Ktoonsez kernel I use now, does have a thermal throttling option, but I wondering which thermal value should I enter for best "performance"? Default was 70 degrees, I set mine at 80, I've heard of people even putting 90 for the same kernel. Besides, maybe I worry about it too much, because in no way the phone should exceed 70 degrees celcius under normal use anyway, or even gaming. Only way to reach insane temperatures would be benchmarking/stress testing...
Still, first time seeing these CPU temperatures also. I've overclocked my LG P500 several times in the past, dealing sometimes with random reboot, so make stability/overheating questionnable, but the device did not supported seeing the actual CPU temp. So I don't know which temperatures would be considered normal - probably, nothing above 75-80, correct (For the Galaxy S4, actually)?
(Jason) said:
(From another thread)
I do know it can run up to about 180 before hitting critical and shutting down
Edit: its about a 75 degree ambient temp where im at.
Tapped² from my I5³5
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At which point is the device supposed to shut down? Is that in the kernel or a hardware CPU trigger? Because heck, I've reached 100 degrees 2 times, I mean, how far/close was I from a shut down? I'm quite surprised.
I've also read of people complaining of S4 overheating, especially maybe after it was released - It's possible that it heats up more than other phones, but honnestly I have no idea.
Thanks for your answer =)

Going thru this exact same thing. Same temps. This is not normal. Mines just started happening one day. Idk how or exactly when

Kennii said:
Going thru this exact same thing. Same temps. This is not normal. Mines just started happening one day. Idk how or exactly when
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Thank you for your answer;
Used to think some temps look normal to me - Besides, since I've undervolted last week, it's stable and run cooler, maybe better battery as well. I never can exceed 70 degrees even when gaming I supose..
I can reach 80 degrees, but only when benchmarking or stability testing, so I'm not worried, but I do wonder;
I've reached 100 degrees 2 times, once while doing a stability test at 1,89 GHz for like 5 minutes (or more), I had to manually stop. And last time was long ago, watched YouTube videos in bed, like under covers ha, maybe as well connected to charger. Not even surprised I've reach such temps after a while in such conditions, under covers, just no air (Used to do it with my LG P500 too. While I never was able to see the CPU temps on this device. Even then, LG P500 still works, but guessing build quality was much better). Needless to say I was like WOAW when I've noticed 100 degrees, and just put the phone down. Probably went from 80 to 100 quickly, didn't noticed that fast. But yeah, that 100 degrees was.. almost expected under such conditions.
I just really wonder about thermal throttling. Like I've mentionned, stock Touchwiz with DVSF disabled seems to throttle at 80, while KTweaker app for a different AOSP kernel have the default temp limit set to 70. Liquidsmooth ROM, AOSP, does not seem to have a throttling point, since I've reached 100 degrees 2 times with it (Don't intend to test 100 degrees again, huh). What would be the maximum ideal temp for throttling? Maybe I think about it too much, since under normal circumstances, I never exceed 70 degrees, besides benchmarks.
Also wondered at which temp is the phone supposed to shut down... 120 degrees?! XD Because 100 seems ridiculous to me, probably is, but yeah, my laptop throttle at 85, and it's a laptop (Intel Core i3) - Can't imagine a phone going any higher without any risk.
Thanks for the feedback

Screen brightness decreases

Hi all. Recently days my G4 H815 601xxxxx decreases brightness(about 10%) itself while i play games or run many apps. Also i have a problem which when i play high demanding games, cpu reaches about 50-55 degree and it restarts itself. It is my second G4 (first died) and hadn't have these 2 problems. Are these alarm of ILAPO?

Brightness decreases to cool the phone and the CPU throttles to do the same. Keep in mind that the 2 big cores are always throttled to 960Mhz to avoid ILAPO which is not legal ?. Unfortunately the phone is not good at all on handling heat!

pavlosargyris said:
Brightness decreases to cool the phone and the CPU throttles to do the same. Keep in mind that the 2 big cores are always throttled to 960Mhz to avoid ILAPO which is not legal ?. Unfortunately the phone is not good at all on handling heat!
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I dind't know that it decreases brightness to cool phone. Where you know that i reduces Mhz of big cores? If so, why still many g4s dies?

xdaorxan said:
I dind't know that it decreases brightness to cool phone. Where you know that i reduces Mhz of big cores? If so, why still many g4s dies?
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If you download Aida64 you will see ?
I think they do that even on "fixed" G4s to prevent it. Not that it's efficient enough

pavlosargyris said:
If you download Aida64 you will see ?
I think they do that even on "fixed" G4s to prevent it. Not that it's efficient enough
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Thanks! Hope i will not get ilapo

xdaorxan said:
Thanks! Hope i will not get ilapo
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if u can find in the hidden menus thermal mitigation u can shut it off or turn it on which ever it is now u can do the oppisate
i believe turn it on actually unthrottles the device

xdaorxan said:
Hi all. Recently days my G4 H815 601xxxxx decreases brightness(about 10%) itself while i play games or run many apps. Also i have a problem which when i play high demanding games, cpu reaches about 50-55 degree and it restarts itself. It is my second G4 (first died) and hadn't have these 2 problems. Are these alarm of ILAPO?
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Click to collapse
Send it to warranty as soon as is starts to restart, that is all. They will replace the motherboard and you are safe and sound for some time. Best to do it before the warranty time runs out for you.
Moreover, I also suffer from the display brightness decrease, but my problem is not due to heat - it happens even at night with phone completely cooled down. Anyone with the same issue?

kakaovnik said:
Send it to warranty as soon as is starts to restart, that is all. They will replace the motherboard and you are safe and sound for some time. Best to do it before the warranty time runs out for you.
Moreover, I also suffer from the display brightness decrease, but my problem is not due to heat - it happens even at night with phone completely cooled down. Anyone with the same issue?
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My warranty is end. Also i have root