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My Nexus 7 overheating

Recently, twice in the same week, my Nexus 7 has been over heating to almost a burning heat. Now, every night I plug my nexus in and its usually around 30%. Then I put it under my pillow while I listen to a podcast and fall asleep. Then I wake up and usually it fine but today I got my temp gun and it read 138° F on the front glass. I looked at my battery status and it showed that it charged to about 80% and then the screen turned on and the battery was draining very fast while on the charger. I think that is when it overheated and the nexus couldn't vent air cause it was under a pillow. Would this screen turning on be a result of a bug in JB or could it be a rouge app? Or could it be that daydreamer thing that is like a screensaver.
Sent from my Nexus 7 using xda app-developers app

What kernel do you use? Do you OC your CPU and GPU?

Oh, I'm sorry I didn't post those details. I am stock with android 4.2.1 with kernel 3.1.10-g22b4fcd. I am unlocked though
Sent from my Nexus 7 using xda app-developers app

I looked at my battery usage history and my screen turned on around 3 in the morning and its draining the battery while its charging. So something is going rouge.
Sent from my Nexus 7 using xda app-developers app

Download trinity kernel toolbox. This app will show you the cpu`s temp. The normal temp for the CPU on 1.3Ghz is about 60-75 °C...

dont keep your seven under a pillow while its charging,. thats the only way that you will get the battery temperature that hot. for a cpu temperature, 138F isnt hot. but for a battery temperature, 138F is very hot.

simms22 said:
dont keep your seven under a pillow while its charging,. thats the only way that you will get the battery temperature that hot. for a cpu temperature, 138F isnt hot. but for a battery temperature, 138F is very hot.
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NEVER put these devices under a pillow while charging! You are asking for it to get fried. I did this with my phone once, and it was too hot to touch once I took it out in the morning.
Sent from my Nexus 7 using Tapatalk HD

OK, that solves the heat issue but how can I find what's drain the battery so fast.
Sent from my Nexus 7 using xda app-developers app

Overheating

Okay, my phone easily overheats if I am charging and using facebook or browser with 3G same time. Also overheats when I am playing Pocket Legends when not charging. If I am charging my phone and Playing Pocket legends, it becomes really hot and just frozes and then reboot after i just unplug charger and leave it alone. This happens in less than 40 minutes. I have a battery app that shows battery temperature and sometimes it goes up to 78 degrees (celsius).
I use cm10 on my phone and never run over 3 apps same time because it causes overheat.
Is this normal for older phones? I have been thinking if I buy that Nexus 4 phone but that is soo expensive in Finland. I haven't overclocked or anything. Can you tell me how to fix this or do i need new phone?
Thanks
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Bump, was too far away down
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Try different kernel.

I get same problem with original kernel, cm9 and cm10 too
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Is overheating problem normal on Xperia z?

Hiiii,
Sorry again questioning because I haven't got reply yet.. And my DOA period is going end
Mine getting hot while browsing and at doing some gpu jobs,
Is that normal,
M not saying that my hands starts burn,
Just feel the camera area hot, seems like 45degrees Celsius, our city temp is more than 43degrees Celsius...
How to check my device temperature?
What is the normal temperature?
Thanx
Sent from my C6602 using xda app-developers app

I think yes its normal..my too gets hot while browsing..
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Mandeep148 said:
Hiiii,
Sorry again questioning because I haven't got reply yet.. And my DOA period is going end
Mine getting hot while browsing and at doing some gpu jobs,
Is that normal,
M not saying that my hands starts burn,
Just feel the camera area hot, seems like 45degrees Celsius, our city temp is more than 43degrees Celsius...
How to check my device temperature?
What is the normal temperature?
Thanx
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
Yep quad core 1.5GHz is going to get pretty warm

Thanx guys....
M very thankful to u all
Sent from my C6602 using xda app-developers app

Mandeep148 said:
Hiiii,
How to check my device temperature?
What is the normal temperature?
Thanx
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
You can check with Bat Stat. It's a widget and work very well.
From my experience a mobile completely in idle should stay at 25/30°C, messaging and do some other light things up to 35°C and gaming 45°
Sent from my C6603 using xda app-developers app

Thank u guys for helping me..
Our city temperature is 45 degree Celsius, and noticed one thing that browsing with y tabs open from chrome and its about 44.7 degree Celsius.. is that normal?
Feeling so laggy
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Yes..when the phone gets heated up the cpu throttles to coontrol the temperature...
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Thanx again all guys...
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There is an app in the system that monitor the temperature.
The phone will shutdown if there is an overheating.
Sent from my C6603 using xda premium

mine is like 35 when charging and browsing XDA apply like right now. and with light browsing and stuff it goes up to 37
doesn't seem normal to me as my girlfriends phone only gets to like 30 degrees when browsing and charging
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Mine also feel hot sometimes so I think it should be normal lol

I think its also depends on room temperature,
Our area is very hot... Mine is getting sometime 47 in sunlight while browsing with watching website video...
Now at using xda app and chatting,is 38
Sent from my C6602 using xda app-developers app

hmm, it seems I'm not the only one but ATM mine is off charger and it is 20 after a phonecall for 5mins and now xda so it is very strange as I noticed this happening since like a week...
and the temperature change seems to affect my batt life... i used to get like atleast 24hours.. now it is far from that
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SaGaR_ said:
hmm, it seems I'm not the only one but ATM mine is off charger and it is 20 after a phonecall for 5mins and now xda so it is very strange as I noticed this happening since like a week...
and the temperature change seems to affect my batt life... i used to get like atleast 24hours.. now it is far from that
Sent from my C6603 using xda premium
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Click to collapse
Temperature change means that your CPU is working. That's why you use more battery. If you want to preserve your battery on a rooted phone you can use apps like "SetCPU" and set as max cpu speed 1016 MHz. This will not reduce drastically you phone speed but will help you to preserve more battery. When you want to play some game set the max value back to 1500 Mhz

Dymor said:
Temperature change means that your CPU is working. That's why you use more battery. If you want to preserve your battery on a rooted phone you can use apps like "SetCPU" and set as max cpu speed 1016 MHz. This will not reduce drastically you phone speed but will help you to preserve more battery. When you want to play some game set the max value back to 1500 Mhz
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i know that, i had profiles set up from 384 when screen was off and 810 when screen was unlocked, but even then it's average temp was like 25... atm i'm doing nothing but xda no music no charger no nothing and it is 27
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Originally Posted by Dymor
Temperature change means that your CPU is working. That's why you use more battery. If you want to preserve your battery on a rooted phone you can use apps like "SetCPU" and set as max cpu speed 1016 MHz. This will not reduce drastically you phone speed but will help you to preserve more battery. When you want to play some game set the max value back to 1500 Mhz
Click to expand...
Click to collapse
i know that, i had profileert set up from 384 when screen was off and 810 when screen was unlocked, but even then it's average temp was like 25... atm i'm doing nothing but xda no music no charger no nothing and it is 27
Sent from my C6603 using xda premium
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Atm I was reading a book from Play Books and temp is 29. With my Note I had similar values.
The thing that is different between XZ and Note it's that XZ can't exchange hot cause it's waterproof and Note can do more effectively.
XZ has a front and back "glass" so it's more sensible about external temp.
Here in Italy summer it's coming and I'll expect about 30° CPU temp as normal
Sent from my C6603 using xda premium

CPU???? xD I was talking about batt temp, around the camera gets very hot sometimes... how can I see cpu temp?
but like i said my battery is draining fast, I used to be able to get like above 24hrs on 1charge
and now I'm on 3% in 9hrs... it bothers me...
Sent from my C6603 using xda premium

SaGaR_ said:
CPU???? xD I was talking about batt temp, around the camera gets very hot sometimes... how can I see cpu temp?
but like i said my battery is draining fast, I used to be able to get like above 24hrs on 1charge
and now I'm on 3% in 9hrs... it bothers me...
Sent from my C6603 using xda premium
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Click to collapse
My fault, i was talking about battery temp. Cpu temp can't be monitored, but i think that is directly propotional with battery temp

Yeah is normal it is a special feature Sony build in. That's foe the winter time to keep Ur hands warm when u use the phone. To bad they do not included a turn off switch for it.
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dante501 said:
Yeah is normal it is a special feature Sony build in. That's foe the winter time to keep Ur hands warm when u use the phone. To bad they do not included a turn off switch for it.
Sent from my C6603 using xda app-developers app
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LOL
SaGaR_ said:
CPU???? xD I was talking about batt temp, around the camera gets very hot sometimes... how can I see cpu temp?
but like i said my battery is draining fast, I used to be able to get like above 24hrs on 1charge
and now I'm on 3% in 9hrs... it bothers me...
Sent from my C6603 using xda premium
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Click to collapse
Today I wanted to test how is the battery of this phone. I had unplugged from charger at 6.30 AM and connected to PC for 10 mins during the day. Now I have 33% remain and I went on YouTube, listened songs with Spotify (offline), SMS, FB, Twitter, Viber, Play Book: a normal daily use for me.
I have .253 fw and Doom Kernel with wheatley governor and cfq scheduler. 1026 MHz max - 192 MHz min. Juice Defender Ultimate for mobile data and WiFi always active when I am at home or at work.
About 18h without charge. For me it's an exceptional battery life. (when i hade Note I used to go with 3 more battery in the bag!)

Post Your CPU Temps!

Tegra 3 is one of the hottest processors out, we all have experienced it heating up and the notorious heat lag, however how hot in Degrees C has your cpu got?
I have had around 90C whilst heavy gaming and torch..
Post your experiences of the heat

Just play shadowgun for a while and u can burn up
Sent from my LG-P880 using xda app-developers app

Woah 90c? I get paranoid and start to panic when i hit >40c.

Hey, here I have over 70 celsius on bad piggies... (A simple 2d game i think)
But not so hot to hurt my finger on the screen...
Sent from my LG-P880 using xda app-developers app

What are you people using to monitor the CPU temps? Could you also post which kernel and rom you are using, and if over/underclocked? I'm very interested in these.

How hot is too hot???

What is considered too hot for battery? My phone gets 107 after playing a certain game skyforce... Usually after 15 minutes game has a lot of detail 144 MB file... Soon as I stop playing it comes down so I know game is culprit..
Sent from my Nexus 6 using XDA Free mobile app

Robert7107 said:
What is considered too hot for battery? My phone gets 107 after playing a certain game skyforce... Usually after 15 minutes game has a lot of detail 144 MB file... Soon as I stop playing it comes down so I know game is culprit..
Sent from my Nexus 6 using XDA Free mobile app
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Are you sure that is the battery and not the CPU / GPU? How are you monitoring temperature?

rootSU said:
Are you sure that is the battery and not the CPU / GPU? How are you monitoring temperature?
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Gsam app...
Sent from my Nexus 6 using XDA Free mobile app

Robert7107 said:
Gsam app...
Sent from my Nexus 6 using XDA Free mobile app
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OK.
Well it's not good to charge it over 122

OK.. So 107 isn't bad?
Sent from my Nexus 6 using XDA Free mobile app

your battery can hit 60C, 140F, before shutdown starts, to cool off the battery. itll automatically shut down at that temp.
---------- Post added at 10:58 AM ---------- Previous post was at 10:58 AM ----------
Robert7107 said:
OK.. So 107 isn't bad?
Sent from my Nexus 6 using XDA Free mobile app
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no, its not.

Running my google music player , surfing web and I am
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Robert7107 said:
Running my google music player , surfing web and I am
Sent from my Nexus 6 using XDA Free mobile app
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your at 91F, which is below human body temp of 98.6F.

simms22 said:
your at 91F, which is below human body temp of 98.6F.
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Right.... I used that as example showing difference between music player and game.. I am assuming cause game has screen on all time and heavily saturated with graphics the reason for high temp....
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Robert7107 said:
Right.... I used that as example showing difference between music player and game.. I am assuming cause game has screen on all time and heavily saturated with graphics the reason for high temp....
Sent from my Nexus 6 using XDA Free mobile app
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yup. games do use the cpu and gpu intensively, which will raise cpu temps, which will warm up the battery. itll rise even more if plugged in and playing as well

Robert7107 said:
What is considered too hot for battery? My phone gets 107 after playing a certain game skyforce... Usually after 15 minutes game has a lot of detail 144 MB file... Soon as I stop playing it comes down so I know game is culprit..
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
A bit of insider information, in a repair facility, devices are regularly put in a dehydration oven that reaches 150 degrees. While the device is inoperable at that temperature, no damage is caused. Also, while repairing screens, the device is sometimes heated to higher temperatures. Batteries are removed for that process but the only thing really at risk is the digitizer.