yashsingh1/xdaforums huggingface dataset:
[Galaxy S 4 Q&A, Help & Troubleshooting] MercuryStar:
From plastic 60C probably won't burn you because it won't conduct heat as quickly. From metal it may well do so.

It is normal for any CPU to heat up when under load. The thermal device profile of a CPU (TDP) rates how much power may be dissipated (eg as heat) under maximum load, and manufacturers usually design their devices such that passively cooled devices will never go above around 60C or 70C or so. The outside of the phone case of course won't reach the same temperature - it may be 40C or 50C maybe - this is a ball park.

If you subject these devices to heavy CPU load they will generate heat. All devices do, and the higher powered the CPU is, generally the more heat it will generate under maximum load.

You do understand that CPUs generate heat when under load, I assume?

Maybe. It's hard to say, and it's especially hard to tell how hot it's getting because the CPU is inside the device and all you can feel is the temperature of the outer case. I don't know specifics over whether these CPUs have a thermal cut-off, or throttle, etc. Being power-effecient battery operated devices, they will be designed for minimum *idle* power dissipation of course.

Note that there are two main causes of heat in a smartphone - heat caused by the battery fast-charging and heat caused by high CPU load. Charging the battery also naturally generates heat, due to the chemical reaction inside the battery. This should keep to a reasonable level. If the heat occurs while you are not charging the battery then you can rule out that as a cause.
[Galaxy S 4 Q&A, Help & Troubleshooting] rsndetre:
Tested with the new modem. After 20 mins of browsing on H+ the temp was 48C ... and this isnt the hottest I felt it.

Power saving on , screen on auto, everything that could generate trafic in background , disabled.

This is not normal !!!

I9505
[Galaxy S 4 Q&A, Help & Troubleshooting] Matte56:
Okay Buddy...

I see what you are saying.

So explain that when we are using the camera or do web browsing why does it get overheated? I think the camera wont use the CPU so high.. Also the Internet..

Another thing when you use Skype or Viber? I think you really would like to believe this thing is normal. Okay though... Pay almost 700$ for a phone and keep it under a fan or in a fridge to prevent the hot surface. I know these phones generate heat but that as much as this one. I was having an iPhone a month ago. No overheating during playing a game.. 3D game not Mario..

I had the Samsung Galaxy S3 which i was using a lot. I mean a lot. It was just generating heat when i was using internet tethering for long time.

Thats all.. I am sorry for arguing but i cant agree with you.
[Galaxy S 4 Q&A, Help & Troubleshooting] rsndetre:
Ok, I tested again at home, on wifi, playing flash content for some minutes. 41C

That was getting my S3 hot and S4 is comparable.

So, is not processor related since under a much heavier load it could not reach the same temperature as some light casual browsing on 2G/3G. (48C).

The hottest I got my S3 was while tethering to laptop while I was gaming online on it. Opening facebook (desktop version) for 5 minutes on 2G/3G is enough to get my S4 comparable hot.

I fail to see how is this ok.
[Galaxy S 4 Q&A, Help & Troubleshooting] tommason1968:
Thank you for the reply. Waiting might be tough as my kids are all about getting a phone that they see in ads and the media and for them their first choice is the iPhone. And I just can't let that happen. I think I'll take a leap of faith and get the S4. Thank you again
[Galaxy S 4 Q&A, Help & Troubleshooting] calum96:
Legend!
[Galaxy S 4 Q&A, Help & Troubleshooting] palash_6670:
is there anyway to slove OVERHEATING problem ?
[Galaxy S 4 Q&A, Help & Troubleshooting] rgshah3:
ota update available in india... somewhat fixes the overheating problem
[Galaxy S 4 Q&A, Help & Troubleshooting] kamranhaghighi:
got same phone after hours and hours of playing not even warm! and still no lag good fps just warm after a benchmark! 9warm not hot) i do ironman 3 and games like that dead trigger ultrahigh! talk to samsung support!

---------- Post added at 10:44 PM ---------- Previous post was at 10:43 PM ----------

oh also my wifi always on!
[Galaxy S 4 Q&A, Help & Troubleshooting] tush1114:
Which app is used to check the temperature? Because after update, *#0228# does not shows any temperature info.
[Galaxy S 4 Q&A, Help & Troubleshooting] calum96:
This is what I use, very good :)

https://play.google.com/store/apps/details?id=com.sensirion.ambientsensing
[Galaxy S 4 Q&A, Help & Troubleshooting] tush1114:
It shows ambient temperature and humidity, i was looking for cpu and system temperature.....

Btw I found new way to check those temperatures as *#0228# is not working.... just type *#0*#. A menu will open with lots of options, there select sensors and from there the last option thermister, It shows three temperatures.. cpu, pam, batt.....
[Galaxy S 4 Q&A, Help & Troubleshooting] gibralter24:
Galaxy s4 i9500 (Exynos 5) overheat problem

My Samsung Galaxy S4, a one month old smartphone. Since the beginning I have been experiencing heating problem on this phone even on simple browsing the web. The situation become worse one day while I was watching a video on youtube while on charge. In between I received a call from my friend and when I take the phone to my ears I felt a sudden unbearable burst of heat from the phone around the ear peace where I nearly dropped the phone. The overheating was also tremendous from the top to the middle part of the front screen and back around the camera. I have no idea whether this is a software or hardware problem and if Samsung aware of this issue. If yes is a solution on the way. I sold my Galaxy Note II for this new phone, and now I felt I have committed a grim mistake.
[Galaxy S 4 Q&A, Help & Troubleshooting] renosj:
Ok,update to new FW which solves this problem. xdaforums.com/showthread.php?t=2319120
[Galaxy S 4 Q&A, Help & Troubleshooting] rsndetre:
I9505

For me is clear that my problems come from modem. Today I was streaming radio over HSPA+, display off, light cpu load, got to 47C.

So, if beside the modem something else is producing heat, like cpu, camera, etc, things get worse.

I guess the Snapdragon 600 variant was made tailored for US market where the integrated LTE is king. The CDMA chip must be something cheap.
[Galaxy S 4 Q&A, Help & Troubleshooting] haloimplant:
Snapdragon 600 doesn't have integrated modem. http://www.qualcomm.com/snapdragon/processors/800-600-400-200/specs
[Galaxy S 4 Q&A, Help & Troubleshooting] rsndetre:
I know there are some contradictions.

Click on Snapdragon 600 and look at the picture of the processor. It's says LTE but is missing in the written detailed explanation.

Also, according to wiki it does not have any modem integrated.
[Galaxy S 4 Q&A, Help & Troubleshooting] calum96:
Ah my mistake :)
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
My carrier has replaced my handset twice and all the 3 SG4s were overheating!!

Even with simple tasks like emails, sms...it gets very warm, when I browse It overheats to 43-45C...I may sell it and get a S3lte or change brand (I had enough), any advice on what should I get?

Shame on Samsung, otherwise a good phone...:(

PS I have put the latest I9505XXUBMEA but no change in regard to heat and I am coming to the conclusions that it is an HW issue that cannot be solved by SW updates, only by heavy underclocking maybe down to 1.2GHz...
[Galaxy S 4 Q&A, Help & Troubleshooting] renosj:
Its interesting, there 9505 mostly hasnt problem with overheating, its 9500 which overheats...Maybe its because of using LTE, when you are on Wifi its OK?
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
In my case 3 out of 3 9505s had overheating problems, it overheats even without 3g/2g/wifi....
[Galaxy S 4 Q&A, Help & Troubleshooting] pulkitsachdeva:
battery drain too :eek:

okay so i accidentally left my GPS running 2 days back and my S4 battery drained from 60% to 5% in 2 hours. Today, I was using bluetooth to transfer some files, around 30 minutes.. and the battery drained from around 50% to 5% in just half an hour!! I switched off the bluetooth and now the battery is back at 13%. I switched off the phone and pulled the battery out and put it back in after 5 minutes.. battery is again at 50% now.. WTF!! Is this normal behavior? I doubt.
[Galaxy S 4 Q&A, Help & Troubleshooting] Matte56:
same "o" thing

Hi Buddy,

Same has happened to me. Actually the opposite when i was charging the phone.. It was staying on 12% for hours.. i did everything nothing has happened. I had to take out the battery then put it back. After that the phone realized it was charged. Jumped up to 50%.. Its a piece of crap i have to say. After the third replacement i'm just going to get a refund for it then buy stg else.. Pretty much disappointed
[Galaxy S 4 Q&A, Help & Troubleshooting] pulkitsachdeva:
I've observed that the battery drain is not because of the bluetooth..

if i press *#0228# and press "quick start" it suddenly drops my battery % after starting after 2-3 secs. Taking the battery out and putting it back again shows me the original charge percentage.. Can anyone else try this and let me know if it's happening for you as well?
[Galaxy S 4 Q&A, Help & Troubleshooting] cmcole101:
Mine gets hot whether it's on WiFi or GPRS. I agree that this has to be a HW problem. - I just completed installing the Omega v5.0 ROM for I9500 along with the Perseus kernel, and for awhile it was somewhat hotter than usual. Now that it's been in sleep mode for the past 10 minutes it's cooled down. I'm going to tweak the Stweaks through different settings to see if I can find an optimal setting that lets the I9500 run smoothly, with speed when needed, and keeps its cool. :cyclops:
[Galaxy S 4 Q&A, Help & Troubleshooting] renosj:
Try to uderclock to 1,4 or 1,2 Ghz a tell us if its better.It should!
[Galaxy S 4 Q&A, Help & Troubleshooting] jcolak:
Underclocking dont have effect. Still overheating. I think that is not problem in procesor. Can someone confirm what chip on motherboard is overhating...
[Galaxy S 4 Q&A, Help & Troubleshooting] cmcole101:
Wonderfully enough, without making any tweaks to the Perseus kernel my I9500 with Omega v5.0 is running smoothly, and cool, and my battery life is looking good, too. YEA!! :highfive:
[Galaxy S 4 Q&A, Help & Troubleshooting] renosj:
Did you underclock?To how much Ghz?
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
Overheating almost SOLVED ! :)

Update to the newest firmware with moving apps to sd card your overheat will dissapear only in games u can feel warm but even in games is much better ! :)
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
When mine overheats it screw up the battery (i.e. with drops of 30% and back up 15% - battery self charging itself!).

I have tried under clocking to 1 and 1.2GHz and I am on the latest offcial ROM but no improvement it still overheats.

I think Samsung has screw up this time but failed to acknowledge, when I called the repair center they said it is perfectly normal as it is a powerful smartphone! I replied saying that one thing is that warming up while on heavy tasks would be normal but overheating is different even with simple tasks like taking pictures (not videos), CPU goes to 48C and within 5 mins the screen top and back near camera is very hot - cant even make phone calls without cooking my ear! What is the purpose of a phone if it gets so hot you can't use it?

My carrier would not replace or refund it so I am stuck with an unsuable phone - lesson learned never buy Samsung again.

Samsung is even looking at the Snapdragon 800 for the SG4, it will either sort the overheating or it will be sold as a oven with S-Cook feature!

Contacted Samsung top management but obviously no reply.

---------- Post added at 11:49 AM ---------- Previous post was at 11:47 AM ----------

I did (I9505XXUBMEA - 29/05), it still overheats.
[Galaxy S 4 Q&A, Help & Troubleshooting] kamranhaghighi:
after too long of gaming and hardaming i jsut realized a little bit near hot

mine is always cold and sometimes warm wile playing games like dead trigger ultra high and ironman 3
[Galaxy S 4 Q&A, Help & Troubleshooting] renosj:
cool!Which version do you have,9500 or 9505?Please everybody, dont forget mention you version as well...
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
Why Samsung removed the temp reading when dialing *#0228* on the new firmware?

So we don't read the temp and dont think it is hot???

Now have to dial *#0*# and then sensors....now while charging it says 47C and it is undercloked to 1.2GHz...

---------- Post added at 12:33 PM ---------- Previous post was at 12:31 PM ----------

9505
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
I9505 and overheating fixed as I had overheated even in short browsing the web

---------- Post added at 12:40 PM ---------- Previous post was at 12:37 PM ----------

I can browsing and using different apos with internet and is cool games much better as well I used to play dungeon hunter 4

---------- Post added at 12:42 PM ---------- Previous post was at 12:40 PM ----------

Cool I can have animated wallpaper now and not getting warm

---------- Post added at 12:44 PM ---------- Previous post was at 12:42 PM ----------

Even while downloading big app with high speed it not getting warm

---------- Post added at 12:48 PM ---------- Previous post was at 12:44 PM ----------

Long hd movies from youtube it can get only bit warm like my old iphone

---------- Post added at 12:58 PM ---------- Previous post was at 12:48 PM ----------

No even not warm full hd movies and this still cold :) you dont feel nearly watmity while u will put phone to your face after 25 mins hd movie from youtube so overheat almost FIXED :)
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
Which ROM? Official?

So you are saying that the new ROM and moving apps to SD card resolves completely the overheating on your 9505?
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
Not completely with games only they must put some more work but even gaming is much nicer now much less heat

---------- Post added at 01:10 PM ---------- Previous post was at 01:07 PM ----------

Yes official rom as I waiting for next updates so dont mess wirh root or custom rom
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
So which ROM did you upgrade to? Did the overheating stop because of the new ROM or because you moved the apps to the sd card?
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
I have italy version on uk phone with csc to italy

---------- Post added at 01:15 PM ---------- Previous post was at 01:12 PM ----------

I have everything fresh did hard reset before and after flash overheating gone cause new official rom

---------- Post added at 01:18 PM ---------- Previous post was at 01:15 PM ----------

XXUBMEA for italy
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
That''s what I have too!

Didn't move apps to sd card as I don't have one yet...so it is because of the new rom or moving apps to sd card? I will re install the rom just in case and revert back
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
I didnt have even any apps to move fresh install and before flash I taken out sd card 3 time iverheat gone cause fresh new official rom
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
ok, thanks, did you use Odin_v3.04 or Odin_v3.07? I want to replicate exactly what you did..
[Galaxy S 4 Q&A, Help & Troubleshooting] echenze:
It's an issue with almost all S4s. There's an update coming out to fix this. It's already rolling out for the GT-I9505 variant but we're still waiting for the one for the GT-I9500. So be patient. Still deactivating some services like Samsung Link and Samsung Push will go a long way in helping.
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
Well after a month and 3 handset changed I want to resolve the matter....I am re flashing just in case, if still doesn't work I will sell it and get something that works out of the box.

---------- Post added at 01:47 PM ---------- Previous post was at 01:39 PM ----------

BTW it has nothing to do with manufacturer date as the last one I got last Tues....i.e. several millions SG4 built by then...
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
Just to fix myself 30 mins HD movie from youtube and it still freezen cold :) I am so happy with this firmware :)

---------- Post added at 02:14 PM ---------- Previous post was at 02:05 PM ----------

So in almost everything phone is cold now like in the bottom part of the phone only gaming getting warmer but is much much much better than before like not same phone

---------- Post added at 02:16 PM ---------- Previous post was at 02:14 PM ----------

Odin 3.07

---------- Post added at 02:34 PM ---------- Previous post was at 02:16 PM ----------

After flash do factory reset and after reset wipe cache partition as I did it all
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
Thanks,

I reflashed... and now installing apps while charging - 55C

Will let cool it down and test over the weekend.
[Galaxy S 4 Q&A, Help & Troubleshooting] tharghan:
Anyone got a clue about why a lot of s4 overheat more than others?

I just did a test... I got an s3 and s4 myself, same apps installed, both on same wifi.

I watched an hd video on youtube, 4 minutes long. S4 started at 30c battery temperature, at the end it wa 37 and the screen was kind of hot (i could feel it hot in the back as well, on the top, right under camera and flash).

I watched the same video on the S3... at the end temperature was 35, and screen was still cold.

So... why does this happen? Im using the german fw (UBMEA) flashed over the italian no brand i had before. I havent tried a wipe yet but i doubt it will change anything.
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
I didnt check with charger yet but without is no heating for me

---------- Post added at 03:15 PM ---------- Previous post was at 03:11 PM ----------

U messing sonething as on newest firmware u cant check external thermistor temp I checking always just putting phone to my face than I can feel properly and is cold no matter what I doing maybe sometime only bit warm a little bit except gaming is bit warmer but still much better than before
[Galaxy S 4 Q&A, Help & Troubleshooting] tharghan:
Mmm not sure I follow you...?

Im talking about the battery temp. I could feel the s4 was hot because, as i wrote, the screen was kind of hot, and on the back it was hot as well (right under camera).
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
And I know what you mean hot as I had on xxuamdd hot even while browse internet about hd movies I could dream than but now is cold mate

---------- Post added at 03:21 PM ---------- Previous post was at 03:19 PM ----------

So I dont know why u have like that for me new firmware solved almost all
[Galaxy S 4 Q&A, Help & Troubleshooting] tharghan:
I'm not sure what you mean but if you mean the UBMEA fw, it didn't solve my problems... i havent wiped after flashing it but i don't think that would change anything really.
[Galaxy S 4 Q&A, Help & Troubleshooting] unandroidemas:
differences of temperature between S4 and S3 at idle.

The S3 it's rooted with Omega ROM 42.2 siyah kernel 1.9.1 and the S4 it's stock with the first firmware BUAMDE, I think with BUAMDK it could be the same.
[Galaxy S 4 Q&A, Help & Troubleshooting] rsndetre:
I just tested both S3 and S4, by browsing with H+. I opened the same pages at the same time.

S3 went from 31C to 33C

S4 went from 33C to 40C

This is just to see the difference. I will test with a heavier site next time.

The update does nothing. I disabled a lot of apps. I disabled Samsung link and push, as someone suggested here. Still no use. My S4 will get to 50C in just 5 mins of browsing facebook. That if you trust what it is reporting, because I have doubts it is accurate. It is always reporting about the same temperature, 1-2 degrees difference at different times, but I can tell the difference is much bigger. There were times when I had to stop using the phone as I was worried by how hot it got in my hand.

I would return the phone if I knew I had a chance of doing so. I very much regret buying the S4 now. My first android phone was a Samsung Gio. Fair phone. I was satisfied so I bought S3 which was/is a great phone. I would still use it if not for the grayish white of the display. The S4 is heating as much as my old Gio while on 3G, if not more. But that was a dirty cheap phone and miles away from what S3 had to offer.

I9505
[Galaxy S 4 Q&A, Help & Troubleshooting] experia1234:
I agree the new update does not fix the overheating on my 9505, even with simple tasks like reading sms, emails or phone calls the CPU reaches easly 39C. I am not sure how Samsung has managed to fail on the thermal design as well as overclocking it to 1.9GHz.

I don't really know what to do as it seems there is no solution and even samsung has not managed to resolve the issue even on the latest production (mine is 5 days old) or sw wise. If you know some top management email....
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
For me after last update no heating. Only while playing games long time it overheating sometime but skype, internet browsing hd movies calling etc it is cold

---------- Post added at 11:20 AM ---------- Previous post was at 11:18 AM ----------

But when u playing on battery saver mode it not heating at all and games working same fast like on normal mode
[Galaxy S 4 Q&A, Help & Troubleshooting] plasmastate:
Are you talking about i9500 or i9505?
[Galaxy S 4 Q&A, Help & Troubleshooting] renosj:
please everybody mention version 9500 or 9505!
[Galaxy S 4 Q&A, Help & Troubleshooting] zabranjeniples:
So, if I understood correctly, there is no solution for overheat problem on S4 ??
[Galaxy S 4 Q&A, Help & Troubleshooting] windozeanti:
Sent from my GT-I9505

39 degrees is normal. It's warm but not overheating.
[Galaxy S 4 Q&A, Help & Troubleshooting] shubhs77:
June 11 OTA update - did it solve heating anyway?

Hi everyone,

Just wanted to check has felt any improvement in heating issue after OTA update for Octacore version in India. The update came on June 11.

Thanks
[Galaxy S 4 Q&A, Help & Troubleshooting] Gillion:
Phone stays cool.

I no longer use low power mode.

Sent from my GT-I9500
[Galaxy S 4 Q&A, Help & Troubleshooting] kris7679:
Me too only while playing a game using it sometime as still heating to much while gaming
[Galaxy S 4 Q&A, Help & Troubleshooting] plasmastate:
I can confirm that the phone heats up considerably less after the mea update. I am coming from me1. I used to think that people who report that the overheat issue has been solved just make their s**** up. But it really heats a lot less now. Even while charging after 30 mins. The battery temp is now at 38C and I have not turned on my air condition of my room.
[Galaxy S 4 Q&A, Help & Troubleshooting] mateenf:
This is the firmware update version that solved heating issues for me...
[Galaxy S 4 Q&A, Help & Troubleshooting] mateenf:
This thread belongs to I9500!! For I9505 please open a new thread!!!
[Galaxy S 4 Q&A, Help & Troubleshooting] renosj:
Yes, I know, but not so do everybody, so thats why the request...
[Galaxy S 4 Q&A, Help & Troubleshooting] Mordeaur:
I've solved media server problem at first day by wiping data/cache and it worked. About heat issue, it's a little bit better but still need to get that update samsung released. It's still not released in Turkey.
[Galaxy S 4 Q&A, Help & Troubleshooting] Riki277:
Solving heat issue with App called System Tuner

I solved my heat issue with this app called System Tuner, it's free and very useful, I find myself using this more than Titanium backup. So what i did was open the app and went to cpu menu and raised the cpu speed from 1.6 (max) ghz to 800 (max) mhz. Now even playing games like GTA vice city, other 3D games I find my phone not heating up as fast as I used to and I didn't have any lag even with 800 (mhz). I also assume this save a lot more battery since using less cpu power will obviously be less power consuming. Good luck and have fun guys!