Does sleep mode make your N7 screen hot to touch ? - Nexus 7 Q&A, Help & Troubleshooting

When putting my N7 to sleep my screen would get so hot it would almost burn my hand. Is this normal ? Do alot of you guys use the sleep function on the N7? How hot does your screen get? After 10 minutes of standby I can feel the warmth of the unit through my case cover ..
-Should I be worried ?

No. That's not normal. Mine's usually ice cold when sleeping. Perhaps a wifi-hungry app is running in the background? WiFi and GPS tend to generate a lot of heat as well as the processor.
Sent from my Nexus 7 using xda app-developers app

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device heat

I've noticed that the device is pretty hot. I'm not sure, which is why I want to verify this with you.
I've used the "Battery Indicator" app which shows that the temp is 34-37 Celsius.
Does that seem about right?
Thank you
yep that's perfectly normal : )
drm111 said:
yep that's perfectly normal : )
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Really? Cause it always feels hot in my hand....
Could it be that I'm just hot (cause the weather here is hot as well)?
What would be too hot ( I mean what temperature ).
I've had the phone restart itself twice yesterday after getting too hot (don't know the temp it was at though)
matanc1 said:
Really? Cause it always feels hot in my hand....
Could it be that I'm just hot (cause the weather here is hot as well)?
What would be too hot ( I mean what temperature ).
I've had the phone restart itself twice yesterday after getting too hot (don't know the temp it was at though)
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34-37c is absolutely normal. Its quite cold where I am atm, and the battery is 37c.
You've also no idea that the phone restarted due to heat. I've gone through 5 replacements now for various reasons, and they all got pretty warm under use. However one of them got stupidly hot, so hot you couldn't even hold onto it without hurting your hand. Thats why I got that one replaced.
And yes, if the ambient temperature is hot, it'll make the phone feel hotter aswell.
None of my GSII's have ever restarted on their own though. Could've been due to an app/widget though.
There has been 2-3 threads on this, one of which I created myself.
It's normal for the device to get quite hot, especially around the camera at the back and the screen near the top of the phone when gaming or watching videos over wifi. It shouldn't get so hot it can't be held though. It also doesn't help if you have a case on the phone, especially a thick gel-type one. I'm currently looking for a thin perforated cover, like the official Samsung one, but unlike that one with protection for the top and the bottom of the device. I suspect these holes will help with heat dissipation.
The phone has inbuilt safety for overheating I believe, although mine has never gotten hot enough to activate it. The phone will shut down if it thinks any more heat will lead to damage.
Pagnell said:
There has been 2-3 threads on this, one of which I created myself.
It's normal for the device to get quite hot, especially around the camera at the back and the screen near the top of the phone when gaming or watching videos over wifi. It shouldn't get so hot it can't be held though. It also doesn't help if you have a case on the phone, especially a thick gel-type one. I'm currently looking for a thin perforated cover, like the official Samsung one, but unlike that one with protection for the top and the bottom of the device. I suspect these holes will help with heat dissipation.
The phone has inbuilt safety for overheating I believe, although mine has never gotten hot enough to activate it. The phone will shut down if it thinks any more heat will lead to damage.
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Thanks!
Was just about to ask about the case, since I bought a black gel one.
So do any of you know of a case that won't affect the heat ( a lot )?
I am honestly afraid to walk with the device without a case so that I don't break the screen (or scratch it) or break the phone in half (it looks so delicate!)
Like I said, the perforated covers look the best for preventing heat build up, although the official Samsung case doesn't protect the top or bottom corners, which perversely are the most likely parts to be damaged if the phone is dropped. I'd like to get hold of a cover that looks like that but with all round protection.
But, is it also "normal" that the phone gets incredibly hot when you play music with headphones on?
I seem to have experienced all the issues everybody went through (except for the shutdown) but nobody ever mentioned music (i am talking about 3 minutes playback not hours!)
Anybody with the same issue?
Take the back case off and smell near the top left of the phone..
When mine got hot a weird smell came from it.
It's probably worth checking with something like osmonitor that you haven't got a stuck task.
A few times mine has got really hot and it was a process using 96% cpu...
Most recently it was SocialHub which I don't even use! Had to reboot the phone to stop it as it wouldn't die.
I also had extremal heating in that area while playing angrybirds and after I move app from SDcard to internal memory - All comes OK. So I suppose it is because your apps ar data (music etc) located on SD and some of them due to speed limits heats during work. (it is in addition to WiFi and other network activity). Cause when I plug SD into comp by adapter and perform long file framsfer it also heats
So is this thing hotter than the original Galaxy S? I can live with the phone at that temp, but any higher is questionable.
It will shut down if it gets to hot. And I guess it takes quite a bit because a few months ago on engadget.com I saw some video of an iPhone a palm phone and I think a nexus one on a grill to see which one will either break or shut down first. And after like a minute on a grill it finally shut off. So I wouldn't worry about it unless its so hot u can't hold it. Once with my evo I was using 4g GPS Bluetooth. And charging the phone and it got up to around 115° (around 46° in celcius) and was fine. I shut it down tho when I noticed it got that high tho haha
Sent from my PC36100 using XDA Premium App
Mine (running XWKE7) went to 50 c when gaming "we rule" in game hub with charger plugged in. No external SD installed though.
Also keep in mind that fatter phones have more space to dissipate the heat. This phone is thin thin. That heat has to go somewhere! That's why I want a case that vents
Sent from my mobile phone using Tapatalk
Only charging... No more words to say...
Swyped from my overclocked GT-I9100 using XDA Premium App
I think my phone is sometimes very hot.But after I have ROM KE7 I think is better.
Sent from my GT-I9100 using XDA App
as soon as I start playing "real football 11" i can essentially cook an egg on the phone. Other games are fine though
Could it be due to the installation of overclocking apps? Didn't notice it was this hot during my first few days of usage.
In the first few days after I got my SGS II the phone went really very hot every time I charged it or when I played a game or even when I watched a movie.
Since I use Lite'ning Rom and banned some system apps the problem vanished.
So for me it seems to be a software-sided problem.

[Q] Nexus 7 car install - heat issues

Hi all,
Not really sure if this thread belongs here, but I can't think of anywhere else to ask. So here goes anyway
I installed my Nexus 7 in my car a while back (thread here: http://forum.xda-developers.com/showthread.php?p=32029790).
Its been great, but I've had to return it twice due to random reboots when the car is hot. I've had the battery replaced twice (I assume due to swelling). The battery is only rated for around 40 degrees Celsius I believe, and in summer the interior of my car probably exceeds that.
So I'm trying to figure out a workaround. Some ideas:
- Would taking the battery out completely and just powering the tablet off the car solve the problem? Is it even possible?
- How about some kind of heat shielding?
- Someone suggested little fans that are commonly used to cool amplifiers - but I'm thinking that won't help when the car is turned off.
Any other suggestions? Has anyone else with tablet installs had this problem?
Thanks guys!
No thoughts?
If you can get some sort of air flow to the rear section that would help. Maybe keep the back off the case removed? Try putting a heat sync on the battery itself with the case kept off with a little area for air flow.
Sent from my One X using Tapatalk 2
I am completely against what you are doing. The device isn't designed for that environment. Understand you are exposing your device to 2 of electronics biggest enemies: heat and shock. The environment calls for a ruggedized device. But you're gonna do what you're gonna do...
I haven't opened my unit, but the power specs should be on the battery. If not, there is a schematic for the N7 available thru the rear camera thread. Removing the battery and providing alternate power is probably the safest choice and requires the least amount of detailed work.
Next alternative is fan cooling. Solar cell power will handle an idle car. Air flow engineering and design is gonna take some math rigor. You will need to exhaust the heat to keep the temp down, more work.
I need some sleep, I hit the thanks thinking I was hitting reply...
UnitedWeFall said:
Hi all,
Not really sure if this thread belongs here, but I can't think of anywhere else to ask. So here goes anyway
I installed my Nexus 7 in my car a while back (thread here: http://forum.xda-developers.com/showthread.php?p=32029790).
Its been great, but I've had to return it twice due to random reboots when the car is hot. I've had the battery replaced twice (I assume due to swelling). The battery is only rated for around 40 degrees Celsius I believe, and in summer the interior of my car probably exceeds that.
So I'm trying to figure out a workaround. Some ideas:
- Would taking the battery out completely and just powering the tablet off the car solve the problem? Is it even possible?
- How about some kind of heat shielding?
- Someone suggested little fans that are commonly used to cool amplifiers - but I'm thinking that won't help when the car is turned off.
Any other suggestions? Has anyone else with tablet installs had this problem?
Thanks guys!
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Is your tablet being charged even with the car off ?
Sent from my HTC One S using xda premium
maek_it_happen said:
Is your tablet being charged even with the car off ?
Sent from my HTC One S using xda premium
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No why?
I thought that might be your heat issue
Sent from my HTC One S using xda premium
---------- Post added at 12:29 PM ---------- Previous post was at 12:23 PM ----------
I have an a100 in dash and have not had any overheating whatsoever
Sent from my HTC One S using xda premium
What about remove the N7 from dash and take with you or hide it under seat ( not so hot i guess). Beside the the solar powered fan proposed i cant think anything else
Sent from my LG-P500h using xda premium

Nexus 4 running hot!

The Nexus 4 I have now is running hot. Just browsing internet for 30 mins and the part next to the lens is burning my hand! Anyone feel uncomfortable using it?
Mine gets warm, but that's pretty much it.
Sent from my Nexus 4 using xda premium
Its burning your hand , ya that's a issue , mine gets warm just like my Gn and both gs3's warm is normal hot not normal
frypan said:
The Nexus 4 I have now is running hot. Just browsing internet for 30 mins and the part next to the lens is burning my hand! Anyone feel uncomfortable using it?
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When you say burning, do you mean just uncomfortably warm, like a really warm hot pad? Do you mean so warm it will actually give you a burn and blisters?
Mine gets uncomfortably warm at times when the CPU is really chugging, but not hot enough to burn or hurt me.
frypan said:
The Nexus 4 I have now is running hot. Just browsing internet for 30 mins and the part next to the lens is burning my hand! Anyone feel uncomfortable using it?
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Get a free cpu temp checker app, what's it say?
Sent from my HTC ONE X using Tapatalk 2
yes the device gets pretty warm, when the mobile data on. with wifi its oky though
Mine get unusually hot when using the Music app and I use it alot. In anycase I'm exchanging mine.
sherwin892 said:
Mine get unusually hot when using the Music app and I use it alot. In anycase I'm exchanging mine.
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Exchanging it for what ? N4 is always going to run warm .
Sent from my Nexus 4 using Tapatalk 2
Try undervolting
As suggested above, download free market application such as battery monitor widget which will display phone temp.
As warm and hot are very subjective terms....where as Degrees C aren't!
Sywepd form my DsereiS
sherwin892 said:
Mine get unusually hot when using the Music app and I use it alot. In anycase I'm exchanging mine.
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I am exchanging mine as well, not case it gets warm lol. cause it has a hairline cracked close to camera. everything else was fine, even though some buzz clicking noise etc

[Q] Do TPU cases get hot?

Hey guys,
I just received my new black TPU case. It fits next to perfectly and makes my phone feel way more sturdy, so I'm very happy so far . Now I have one question: will TPU cases become hot easily? Of course too much heat will not be good for my phone and when it turns summer here again, I want to know if it might get my phone to become too hot, especially since it's black.
I don't know if it is a stupid question, but then I will know that at least too
Sent from my Nexus 4 using xda app-developers app
That's a strange question.
It sounds like your trying to say if the tpu case will emit heat on its own. LOL
1. You should not leave your phone out in the sun. That's how it gets hot during the hot summer. (That's why you have pockets.)
2. The environment you're in will affect the temperature of the phone but not too much. For example, a outside temperature of 25 degrees Fahrenheit will decrease the temperature to about maybe about 4-5+ degrees lower. But the phone is still operable.
3. I have been using tpu cases for years and it has never been a problem. I never thought about it either. You bought the case you use it. Otherwise, you can leave it naked and free.
(Please don't leave your phone out in the hot sumer hot.) Keep it in your pocket or backpack with the case on and away from hard objects that can damage the screen.
Sent from my Nexus 4 using Tapatalk 2
scream4cheese said:
That's a strange question.
It sounds like your trying to say if the tpu case will emit heat on its own. LOL
1. You should not leave your phone out in the sun. That's how it gets hot during the hot summer. (That's why you have pockets.)
2. The environment you're in will affect the temperature of the phone but not too much. For example, a outside temperature of 25 degrees Fahrenheit will decrease the temperature to about maybe about 4-5+ degrees lower. But the phone is still operable.
3. I have been using tpu cases for years and it has never been a problem. I never thought about it either. You bought the case you use it. Otherwise, you can leave it naked and free.
(Please don't leave your phone out in the hot sumer hot.) Keep it in your pocket or backpack with the case on and away from hard objects that can damage the screen.
Sent from my Nexus 4 using Tapatalk 2
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Thanks for your reaction. I didn't mean that it would emit heat, but more that it would trap it. The thing I was concerned about would in be in summer in my room whilst the phone would be charging. Especially when I'm playing the PS3 there in summer temperature would rise quite a bit and the battery of my old ace went up to 40°C
Sent from my Nexus 4 using xda app-developers app

Overheating Solution?

Hey guys so basically we everytime I play a game the temperature of the Nexus 4 increases greatly, and we can feel the heat radiating from the back.
So what I do now is place the Nexus 4 in the fridge for about 3/4 minutes and the temperature then reduces from 40°C to around 30°C which is around normal.
I'm not sure if this is good for the phone it self, so I ask your opinion. Please contribute.
Thanks.
TheUnknownCopy said:
...I'm not sure if this is good for the phone it self, so I ask your opinion. Please contribute.
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It likely isn't. I believe it'll cause some condensation, and cause liquid to build-up inside and/or on the device, and liquid isn't too kind to electronics.
40C is nothing lol, my phone gets like that when am on browser, when am on chrome its closer to 50-60C.
you have a quad core phone, itll get hot when you push the cpu(gaming). this is normal. you feel the heat through the back glass because they used glass to help transfer the heat out of the phone faster. one thing you can do that will keep the phone cool is to not use the phone.
Just flash a custom kernel and UV..simple as that!!
You shouldn`t cool your phone in fridge. There is too high humidity
Sent from my LG-P700 using xda app-developers app
TheUnknownCopy said:
Hey guys so basically we everytime I play a game the temperature of the Nexus 4 increases greatly, and we can feel the heat radiating from the back.
So what I do now is place the Nexus 4 in the fridge for about 3/4 minutes and the temperature then reduces from 40°C to around 30°C which is around normal.
I'm not sure if this is good for the phone it self, so I ask your opinion. Please contribute.
Thanks.
Click to expand...
Click to collapse
OMG! Just throw a bucket of water on it
Sent from my Nexus 4 using Tapatalk 2
TheUnknownCopy said:
Hey guys so basically we everytime I play a game the temperature of the Nexus 4 increases greatly, and we can feel the heat radiating from the back.
So what I do now is place the Nexus 4 in the fridge for about 3/4 minutes and the temperature then reduces from 40°C to around 30°C which is around normal.
I'm not sure if this is good for the phone it self, so I ask your opinion. Please contribute.
Thanks.
Click to expand...
Click to collapse
Its expected... 4 cores on all the time.... Its like saying you get hot and sweaty when you exert yourself during a strenuous physical activity.
DO NOT PUT YOUR PHONE IN THE FRIDGE!!!
Sent from my Nexus 4 using xda premium
Quote: So what I do now is place the Nexus 4 in the fridge for about 3/4 minutes and the temperature then reduces from 40°C to around 30°C which is around normal.
How do they come up with it :laugh::laugh::laugh::laugh::laugh::laugh:.
Maybe you better cool your own brain
place the phone on a sheet of metal or glass to conduct the heat, you shouldn't put it in the fridge depending how wet it is inside,
TheUnknownCopy said:
So what I do now is place the Nexus 4 in the fridge for about 3/4 minutes and the temperature then reduces from 40°C to around 30°C which is around normal..
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This came to mind when I read your post.
You know how to break glass right? And you're putting a hot glass front and back phone in the fridge? I wouldn't make a habit of it and expect anything good to result.
My advice, besides finding a different ROM and/or kernel combo that suits your needs better; use a console/desktop for gaming.
Thanks to all those who answered my question. Luckily I only did it once phew!
I had a feeling that there would be something wrong with putting it in the fridge.

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