Develop Bugs

[Q] Temperature

Hi Folks.
Does anyone have any idea what a safe operating temperature for the Samsung Epic Touch 4G is?
I most recently have been using the usb to hdmi converter to play shows to my TV and then running a VNC Server on the phone so I can control the Epic from my laptop to pause, play, etc. while the phone is setting by the TV.
This works great, but with the video and the server running the Epic gets up to 42 to 46 degrees C.
I have felt phones get hotter, but I don't want to damage my phone either. It cooled down to 32 degrees C pretty fast after using it as a media center.
Any opinions or technical knowledge? I ran it for a few hours, and am hoping I did not cause any permanent damage.

I know epic 1 shut down at like 110° f. might be too low, but mime got so hot on halloween after using as projection for our haunted house. Bricked the phone until I factory reset it...played movie fine, just boot lopped.
-jr

tubasteve said:
I know epic 1 shut down at like 110° f. might be too low, but mime got so hot on halloween after using as projection for our haunted house. Bricked the phone until I factory reset it...played movie fine, just boot lopped.
-jr
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Click to collapse
I think I took the Touch to like 114F. I did not notice the phone misbehaving at all, and it cooled down fast enough. (Well not entirely true. It kinda froze up, but that happens everytime I unhook it from the TV, seems my ADW Launcher gets glitchy when using with TV, don't think related to heat.) I think the reason it really heated up was due to using as vnc server, would not even gain charge. Yesterday when I just streamed the video to the TV without vnc, it stayed charged and seemed cooler.
The phone you used for a projection, was it the Epic or the Epic Touch? And after doing the factory reset, did you notice any issues? Slower, freezing, etc.?

Just Bumping this...
Hoping to get some more incite into the Epic Touch temperature specifications.
Thanks in advance

Bump one more time. Anyone?
Sent from my SPH-D710 using xda premium

pjjohn73 said:
Bump one more time. Anyone?
Sent from my SPH-D710 using xda premium
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I think that the phone shuts down beforehand but it would be nice to know what that number is.
Sent from my SPH-D710 using xda premium

JohnCorleone said:
I think that the phone shuts down beforehand but it would be nice to know what that number is.
Sent from my SPH-D710 using xda premium
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Click to collapse
Thanks for the reply John.
I would think so too. Just curious as doing the streaming etc to the TV is very convenient but not worth damaging the phone. I really think its ok to do so though, the phone has been at 40-42C with normal use. Running a bit above that has not seemed to harm it.
Sent from my SPH-D710 using xda premium

I think I had a run in with a rogue app the other day. My battery was draining unusually fast and I plugged it in to charge, but it was charging very slowly and the temp got up to 120F according to the widget I'm using. I rebooted and everything has been fine since.
Sent from my SPH-D710 using Tapatalk

Often times (I mean, very often) when I go to grab and use my phone I can tell by touch that it's hot and check the battery temp - those times it's usually 106° F and higher. I could tell you now that seeing my temp at 110° to 115° F doesn't surprise me at all. What kills me is that most of these times I'm not actively doing anything with the phone - I've just pulled it out of my pocket and think, damn, it's hot again.
A couple of weeks ago I updated the Widget Locker app to the latest version to try out the Honeycomb and Ice Cream lock screens, so after updating I played around with it for a while. My phone started getting hot - as in HOTTER than I'm used to. I checked the temp and it was screaming hot at 122°. What's worse is that it kept getting hotter and when I checked my battery monitor app it was definitely Widget Locker that was driving it up there. I powered off, let the battery cool a bit then rebooted. I plugged in the phone to regain some charge and checked it a little while later to see it was really, really hot again. Now at some point it was so hot it would NOT charge - stating this explicitly. I pulled the battery to let it cool and tried again later. This happened about 3-4 times before I said screw it and uninstalled Widget Locker all together. Hasn't done that again since.
So, if it helps you at all, temps around 110° - 115° have been fine for me. Over 120° would start to concern me and I think it stops charging and gives you a warning at 130°.
I've attached some photos of that particular instance. The last photo shows my temp distribution... I'm assuming all the time, and it surprised me at being an avg of 88°.

Thanks Beans! That was very useful information. I feel mich better now. Thats to bad about Widget Locker. I have used that app on occasion. I have not had a problem yet with it getting to hot on its own. But if it does I will assume its a troublesome app. Thanks again!
Sent from my SPH-D710 using xda premium

pjjohn73 said:
Thanks Beans! That was very useful information. I feel mich better now. Thats to bad about Widget Locker. I have used that app on occasion. I have not had a problem yet with it getting to hot on its own. But if it does I will assume its a troublesome app. Thanks again!
Sent from my SPH-D710 using xda premium
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I used to have a problem with Widget Locker in earlier versions but the updated versions have been much more battery friendly and my phone doesn't seem to get hot from it. I am using a custom slider that someone from XDA made though but I don't think that should matter
Sent from my SPH-D710 using Tapatalk

[Q] CPU overheat and crash, help?

My wife's Epic 4G was working fine yesterday but today it crashed and overheated pretty severely. When it was still plugged in and crashing it showed the battery charging and then it turned yellow and show a yellow warning triangle with a thermometer beside it, is the phone going to stop working on us?
I would appreciate a quick response so I can take it to Sprint and see what they can do about it.
I just factory reset it to insure that it wasn't a rogue application or what not and the phone is still running slow, not as bad as when it was crashing, but it still works so I don't know what's going on with it.
Also the phone is stock and has always been stock without root or any other type of hacking, etc.
It just stooped working perfectly one minute.
She showed me that the screen was blinking rapidly in an up and down bar fashion on the home screen and during applications.

First of all how old is the phone. My phone runs games hot all the time and never crashes (well sometimes, but usually when im not even doing anything with it).
I would think that the video is going out on it and it is rebooting. Depending on the age I think your phone is dead dude.
Cheers
Burrito

Not a year yet, it'll be a year old in June or July. I'm hoping it was just a virus or something because its working now. Should I exchange it anyway?
Nabbu eats your face.

Try flashing it back to stock or wipe the data if it isn't already rooted. I've never heard of anything of this sort... need some screenshots or something.
Sent from my SPH-D700 using xda premium

It's already stock.
Big Goron said:
Try flashing it back to stock or wipe the data if it isn't already rooted. I've never heard of anything of this sort... need some screenshots or something.
Sent from my SPH-D700 using xda premium
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I already factory reset it and it's running right now as if it were just fine but what I'm wondering is if it's going to happen again and not work afterwards.
I'm thinking about taking it in to Sprint and exchanging it but I'm afraid there might be fees for exchanging or what not. The phone has been dropped multiple times but it never had any issues before.
The drop distance has been less then 2 feet every time.
No water damage to the phone itself but the Sprint tech said the battery's "water damage" indicator was activated and showing water damage.
The phone HAS been in the bathroom during multiple showers which might be the cause for the battery's damage indicator to go off but the phone, like I said, has never had any issues.
She downloads pretty much everything from the Market so I was suspecting viruses or malware and now it's "clean" it's running fine.
Any suggestions for where I should go from here?

The phone should be fine. This has happened to me a few times.... if your phone gets extremely hot it will refuse to charge as a safety feature and show that yellow triangle thing... open the back of the phone take the battery out and let it cool down.
Sent from a CM9 powered Epic.

That's the best advice i've gotten on here! Thanks a ton! ^^b
Nabbu eats your face.

Big Goron said:
Try flashing it back to stock or wipe the data if it isn't already rooted. I've never heard of anything of this sort... need some screenshots or something.
Sent from my SPH-D700 using xda premium
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Click to collapse
Happened to me my battery got near 118*F so I took it out and let it cool on some aluminum and put it back in was fine
BTW you can't take a screenie because phone shuts it self off
Sent from my SPH-D700 using xda premium

I'm guessing that the overheating problem had to do with a buggy app that was running on the phone and took lots of data or cpu time. This has also been know to happen when running wifi hotspot apps.
Regardless, like everyone else said the phone went into thermal protection mode. The battery got hot and it wouldn't charge the battery until it cooled down.

Could be the screen being on and maybe running a governor such as "performance"? Also, I've left my phone under a pillow charging, woke up it was 110F and I haven't had this problem it mustve been really hot
Sent from my SPH-D700 using xda premium

Fire n mage said:
Could be the screen being on and maybe running a governor such as "performance"? Also, I've left my phone under a pillow charging, woke up it was 110F and I haven't had this problem it mustve been really hot
Sent from my SPH-D700 using xda premium
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phone on the charger while doing things stir up more heat than normal as well.
plus i just had mine on the charger and for five minutes i was listening to tune in radio streaming over wifi and playing lets golf 3 and got off and phone was at 109.4*F Battery heat

poit said:
I'm guessing that the overheating problem had to do with a buggy app that was running on the phone and took lots of data or cpu time.
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Click to collapse
THIS! ^^^ Without looking at your phone, I'm guessing this was the culprit. She had a buggy/defunct app that was probably frozen in the background while still sucking CPU/RAM. I've had a few of those instances and it DEFINITELY increases the temperature of the phone.
Only other thing I can think of is if she runs her phone at the brightest setting and has a long timeout on the screen timeout. Either way, I think it's nothing a little spring cleaning of the apps and tweaking couldn't take care of. Good luck buddy

Sprint Galaxy Nexus Overheating

I'm hoping you all might be able to help me. I am having overheating problems with my new Nexus. I have found that any time I have my Nexus charging in my car and my navigation running such that the screen is on, within 10 minutes the battery starts to overheat and the phone stops charging. Through testing and trial & error, here is what I have found.
1. If the phone is charging while using navigation and the screen is on, it will overheat such that it stops charging.
2. If the phone is charging while using navigation and the screen is off, it will NOT overheat.
3. The first two are true whether other radios are turned on (wifi, bluetooth, etc) or not, doesn't matter.
4. If the phone is just charging it is fine.
5. Switching ROMs doesn't help.
6. Also happens with the stock battery and the Seidio extended battery.
7. Happens whether I have the screen brightness on the highest setting or the lowest.
Basically, what I it has come down to, I can't use navigation with the screen on.....which kind of defeats the purpose.
Has anyone else had similar issues?
I am currently running Are-You-Jellin-M1

Reported to be moved to Q&A where this should have been.
Onto the question. Seems like navigation is a really CPU and GPS intensive activity so I would say keep it off the charger.... just doing normal things this phone will heat up and I'm in WiFi. And being on 3G that thing will cook your hand. Only thing I would say is keep it off the charger... and change the timeout for the screen which usually navigation will keep the screen on.
Sent From My Toro+ via SkyBlue Tapatalk

ÜBER™ said:
Reported to be moved to Q&A where this should have been.
Onto the question. Seems like navigation is a really CPU and GPS intensive activity so I would say keep it off the charger.... just doing normal things this phone will heat up and I'm in WiFi. And being on 3G that thing will cook your hand. Only thing I would say is keep it off the charger... and change the timeout for the screen which usually navigation will keep the screen on.
Sent From My Toro+ via SkyBlue Tapatalk
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Sure, but the phone is such a battery hog that you go anywhere and then you are without a phone. Then, how do you navigate back.... Navigation is one of the biggest reasons I have a smart phone. I find it absurd that this phone can't use one of it's most important features while charging.

Take your phone back to stock and do the same thing you were doing to overheat your phone. If it still gets REALLY HOT you might need to take your phone in for an exchange. My first nexus had a heating issue and I had to exchange it. It will get warm when using GPS but not so hot your phone acts up. You might also try using a different kernal with hour ROM as well.
Sent from my Galaxy Nexus using xda app-developers app

tibman260 said:
Sure, but the phone is such a battery hog that you go anywhere and then you are without a phone. Then, how do you navigate back.... Navigation is one of the biggest reasons I have a smart phone. I find it absurd that this phone can't use one of it's most important features while charging.
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Click to collapse
You do realize these are dual cores... more cores... more heat. You could possibly have an issue ... and its not a battery hog... had to use Nav this last weekend and it did great. Only lost around ±20% which is not bad using 3G and listening to music with it as well. However I use custom kernels which are undervolted far more than the stock KERNEL.
Sent From My Toro+ via SkyBlue Tapatalk

Just do a warranty exchange in your carriers store. I use GPS all the time while charging and it doesn't heat up. Best advice I can give you. I'm on the same ROM as you also.
Sent from my Galaxy Nexus using xda premium

What was the temperature outside? Also is your phone in direct sunlight?
The Chicago region has been getting 95°F+ temps, and just from my drive home to work with the A/C on, I have to put my phone in my lunch cooler so it will charge.
You're phone, just sitting idle in direct sunlight on a 90°F day, will heat up your battery past it's 49°C overheat condition within 5 minutes.

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Thread moved

Relative temps outside have been cool. I tried on my way into work this morning with a different rom and the temp outside was 75 max and there wasn't any sunlight hitting the phone.
I even tried blasting the air by holding the phone up to the vent and it didn't help. The only way I have found it to cool back down is to turn off the screen.

tibman260 said:
Relative temps outside have been cool. I tried on my way into work this morning with a different rom and the temp outside was 75 max and there wasn't any sunlight hitting the phone.
I even tried blasting the air by holding the phone up to the vent and it didn't help. The only way I have found it to cool back down is to turn off the screen.
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Click to collapse
Exchange it.
Sent from my Galaxy Nexus using xda app-developers app

Boot Loader solving my over heating problem
I was getting some crazy over heating issues especially when I would try
to do a backup using TWRP recovery my screen would even turn odd colors.
I am running a JB CM10 rom and I have been using the ICS boot loader because it
didn't seem to be causing me much problems. I recently decided to change my
boot loader and all of my over heating issues have gone away.

[Q]Heat at upper right corner?

Hello,
I played a bit on my Nexus with wifi and was chatting on facebook for about an hour and after that my phone got really hot.
I sent it back to service, came back with changed mainboard but the same thing happens. Sometimes if I push my playtime it keeps slowing down, and getting hot really.
Can't fry a chicken on it, but it's around 60°C as I am assuming.
Is this thing normal?

What's ur ROM and Kernel?
mihaly_n said:
Hello,
I played a bit on my Nexus with wifi and was chatting on facebook for about an hour and after that my phone got really hot.
I sent it back to service, came back with changed mainboard but the same thing happens. Sometimes if I push my playtime it keeps slowing down, and getting hot really.
Can't fry a chicken on it, but it's around 60°C as I am assuming.
Is this thing normal?
Click to expand...
Click to collapse
Hello Bro,
Just keep ur calm buddy, firstly give sum details of ur rom and kernel.

Well no matter... i used stock when it got slower and got sent back...
Now I'm on cyanogenmod 10.1 nightly and yes it heats up even browsing gallery with high brightness but doesn't slow down... its just hot
Sent from my Galaxy Nexus using Tapatalk 2

[deleted]

I know that there is the CPU... but this is a bit strange...
I think it's unusual this warmth

I think is normal. CPU can reach 80ºC

Oh ok than... thank you
Sent from my Galaxy Nexus using Tapatalk 2

Bloated touchwiz or defective phone causing bottom to heat up, will rooting help?

On friday I got a brand new Galaxy S3 from sprint, everything seemed to be well until I got home and actually started using my phone.
After I let all my apps download and everything synced up I started using my phone (texting my friends)
I have the phone completely
What I have noticed between then and now (and there have been plenty of restarts along the way) is that the bottom part of the phone, where the capacitive and home buttons are (I turned off the lights btw) get really warm, borderline hot by just merely unlocking the phone and sending a few texts.
The only apps I can think of that sync in the background are gmail and facebook, but that was never a problem on my evo LTE.
EDIT: The phone is completely stock and it doesnt get warm once the screen is off

Uninstall those apps for a day and see if it runs fine. But it does sound like something is constantly running heating up the processor and that will cause the reboots. Also you can Get an app called cpu spy and install it then let the phone sit for 10 minutes then wake it up and go to CPU spy and see if it's going into deep sleep.
Sent from the future via Tapatalk 4

edfunkycold said:
Uninstall those apps for a day and see if it runs fine. But it does sound like something is constantly running heating up the processor and that will cause the reboots. Also you can Get an app called cpu spy and install it then let the phone sit for 10 minutes then wake it up and go to CPU spy and see if it's going into deep sleep.
Sent from the future via Tapatalk 4
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Sorry, I meant to say I rebooted the phone a couple of times to see if that would help. Should've been clearer.
The heating up only happens when the phone has the screen on, but I'm installing the app right now. Thanks.
Initial install gave me this
http://i43.tinypic.com/2m29ijn.png

I just noticed that the battery doesn't heat up when my screen is on. I don't know if that helps
Sent from my SPH-L710 using Tapatalk 4

Well your getting deep sleep which is good. Let me ask does it get warm or hot to the touch, which worries you? If it's just a slight warmth i wouldn't worry to much. How do you have screen brightness set at? Don't use auto brightness and set the level lowest you can live with.
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edfunkycold said:
Well your getting deep sleep which is good. Let me ask does it get warm or hot to the touch, which worries you? If it's just a slight warmth i wouldn't worry to much. How do you have screen brightness set at? Don't use auto brightness and set the level lowest you can live with.
Sent from the future via Tapatalk 4
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It gets pretty warm, bordering on hot imo, and I have set the brightness to lowest level.
I'm going to root and install a rom on and play with the cpu settings to see if that helps.
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jesuscash said:
It gets pretty warm, bordering on hot imo, and I have set the brightness to lowest level.
I'm going to root and install a rom on and play with the cpu settings to see if that helps.
Sent from my SPH-L710 using Tapatalk 4
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Good luck, keep us updated.
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edfunkycold said:
Good luck, keep us updated.
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Phone runs MUCH cooler on cm. I guess my phone didn't like touchwiz
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