Its a 2 year old Japanese android phone, nothing especially fancy. On a number of occasions now I have noticed a strong warmth coming from my pocket, my phone heats up from time to time. It will reach a temperature of about 50 degrees C. It has a 1200 mAh battery (possibly the source of the heat). Is it safe for me to carry around and hold near my face?
no, take the battery out and go take it to a phone repair shop and tell them of the problem.
^this.
There is probably a problem with your phone, especially if it gets hot when it's supposed to be idling. I've had my phone do this but that was because of some bugs in my custom rom that caused my phone to randomly max the cpu out at certain times.
So yes, take it to the repair shop (I believe it's called?)
I installed a non-stock android rom on mine, that could very well be what is causing it. Maybe I will install a different version of android and see if that fixes it. But I don't want to go back to android 2.3
Yea don't gingerbread is horrible and a pain in the arse to root. Have you tried any nightly builds for your phone or are u using a stable version ?
Custom rom? ...well...that could be it... Next time it gets warm. take out the battery and see if that is whats warm or the phone itself.
2.3 isn't that great...but it ISN'T that hard to root- My mother got a cheap android phone running 2.3 and I simply rooted it so I could i uninstall all the bloat (that thing is like 2x faster)
Forgive me for not knowing, what is a nightly build? The build I am using is usable but not terribly stable - crashes maybe 2 or 3 times a week and Bluetooth, front facing camera and video don't work. I still find it preferable to gingerbread with all the crap my carrier put on it though. The phone is pretty obscure, its a ZTE Crescent so not many people have been making roms for it. I am currently running an 8 month old android 4.0.4 CyanogenMod on it.
Its not super warm at the moment but the battery is certainly the coolest part on the phone.
Then it isnt your battery and you're fine using the phone.
Your CPU is just getting warm. Most likely due to your ROM.
You dont need to take it to any repair shop. You dont need to stop using it. You're fine.
Just try a different ROM. should increase your battery life, as well.
Can you recommend a good rom?
If you say the battery isn't the source of the heat, then it's the CPU or sometimes the antennae can get quite hot when used for long intensive periods. I would say check all the settings, if those are fine then your'e fine to use the phone. Don't worry about it.
what model phone do you have?
What apps do you have installed? I've heard of some popular apps that do bitcoin mining on smart phone and heat the phones up.
some phones just get hot.
the HTC Sensation is one of them.
just browsing the web heats it up like hell.
its a good winter phone :D
Its a ZTE Crescent although I live in the UK so the carrier (Orange) re-branded it the San Fransico ii
I don't actually use many apps. Just Gmail, Youtube and other standard google apps.
Add LG Optimus G to the list. I owned that device for a while. The device would get very hot after 10 minutes of video watching to the point it felt uncomfortable to touch the screen. I think it was the display panel they used because it would forcible dim the light to a certain percentage and would only allow you to dim it more.
http://www.modaco.com/topic/360305-jb-422-cyanogenmod-101-rom-last-updated-2002/
My HTC OneX+ heats up a lot, and when it does that I usually restart it, because it will suck batteries if I don't. It seems to be a combination of 4G access, and some other app causing the issue. However you shouldn't worry too much about it. I find that if you get something like the One M8 that it will handle heat a lot better. It may not last as long running super hot, but I doubt you will be using it for more than three-five years.
My Galaxy Note II does get hot but only when gaming something heavy like Vice City or San Andreas. For mW it is the processors heating up.
But recently I have over clocked the CPU and GPU slightly and at the same time UnderVolted them so it runs faster and for longer than before. The temps are ever so slightly lower than before but chiefly when heavy gaming it is not as hot as before and smoother.
It is the Devil Kernel for this interested with scripts by Mat9v.
So yeah likely what is happening is the ccyanogenmod CPU governor is probably a little quick to ramp up the speed and not bring it back down. Check your batter stat in system settings and see it is is also being kept awake.