Develop Bugs

Phone gets real warm

I'm not one of those that gets 26 hours on a battery. I use the phone a lot! It always gets quite warm. Hasn't really caused any problem that I know of, but anyone know of why?
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It's normal
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I think im the only one who doesnt have the overheat issue
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I read somewhere that one or both of the cores aren't managed efficiently and switch govenors from ondemand to performance which the phone isn't optimized for causing the heat issue. I actually put my phone on performance and it did get hot so I think this may be true, I heard that there was a script or something that fixes it called restore dual core or something like that but I think it was for the international S3 so I don't know if it will work with our devices.

My stock rom also used to make the phone heat up but it's always at the very bottom. Anyone know why that it?
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My phone use to be very warm and then I changed to FrostyICS Rom and now it only a little and none most of the time

Khmer123 said:
My phone use to be very warm and then I changed to FrostyICS Rom and now it only a little and none most of the time
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It's gotta be the name "Frosty"
I'm on stock and it heats up at the bottom only if I've been surfing the net on wifi for a long period of time or when it's charging...and I'm surfing the net
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I figured that the phone heats up due to processor usage.
My guess would be that the processor is located behind the home button, therefore when you're running an intensive task (or doing somethings in general) the processor has to increase the clock speed thus heating the device.
It's really annoying actually, makes my hands sweaty sometimes when holding the phone.

joshuasvt said:
It's gotta be the name "Frosty"
I'm on stock and it heats up at the bottom only if I've been surfing the net on wifi for a long period of time or when it's charging...and I'm surfing the net
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I think i might know what your problem most of the web browsing dolphin, Firefox.......etc still loading in the background or spending ( maybe just me ) on top of the page even doe you go to the home screen or used different app that why it killing your battery and heat up
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I had this phone heating up on me while I was on stock too, but ever since I switched to AOKP with Lean Kernel the heating has been dramatically reduced for me. And by dramatically reduced I mean it rarely heats up unless I'm doing something up that takes a lot of processing power like a 3D game.

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How to make two cores working?

How to make two cores working for better performance?
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jboy15 said:
How to make two cores working for better performance?
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You can use CPU Editor, It's a script that allows you to force dual core and allows a lot of customization. For instance you can run different frequencies on each core along with different govenors and so on, could be great for saving battery life too.

If you have a dual core processor in your Windows 7 computer and one of the processing cores is disabled, you have the ability to make both cores work again. Utilizing both processing cores instead of just one will substantially increase the processing performance of your computer, which will translate into faster operations.

jboy15 said:
How to make two cores working for better performance?
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Root your phone. Download system tuner pro from the app store got to Cpu and change the governor to performance instead of on demand... This will use a lot more battery tho.
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Crisisx1 said:
Root your phone. Download system tuner pro from the app store got to Cpu and change the governor to performance instead of on demand... This will use a lot more battery tho.
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I actually wouldn't recommend that, in some cases performance is the better govenor for performance but I heard the S3 or the S4 processor is actually optimized for the ondemand govenor. I did some tests and I noticed that they scored pretty close to the same in the benchmarks department, I noticed that the S3 gets hot when using the performance govenor and then it starts to lag here and there but I did not experience this with the ondemand govenor.
OnDemand:
Scales CPU according to the processing needs of the programs running which saves power and is still snappy as ever.
Performance:
Locks the CPU at the top frequency regardless of processing needs which drains battery and can make the S3 insanely hot.

theboss23 said:
I actually wouldn't recommend that, in some cases performance is the better govenor for performance but I heard the S3 or the S4 processor is actually optimized for the ondemand govenor. I did some tests and I noticed that they scored pretty close to the same in the benchmarks department, I noticed that the S3 gets hot when using the performance govenor and then it starts to lag here and there but I did not experience this with the ondemand govenor.
OnDemand:
Scales CPU according to the processing needs of the programs running which saves power and is still snappy as ever.
Performance:
Locks the CPU at the top frequency regardless of processing needs which drains battery and can make the S3 insanely hot.
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If you read ops request... He wants to know how to make both the cores work at the same time... And I gave him the right answer regardless of what it does to the phone he wanted to know how to do it and I answered.
Now would I recommend having both cores on at all times absolutely not... Phone drains the batter and gets pretty hot.
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Crisisx1 said:
If you read ops request... He wants to know how to make both the cores work at the same time... And I gave him the right answer regardless of what it does to the phone he wanted to know how to do it and I answered.
Now would I recommend having both cores on at all times absolutely not... Phone drains the batter and gets pretty hot.
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I never said you didn't give him the right answer I was just trying to give him a bit more info on the performance govenor.

jboy15 said:
How to make two cores working for better performance?
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Naturally the second core will come on when it needs to based off the type of governor set. As said before performance governor locks at Max. SmartassV2 does not have smp so the second core never goes offline. Simply turning on the second core really won't give you a noticeable difference in performance.
But using root explorer or terminal emulator, setting
/sys/devices/system/CPU/CPU1/online to 1
Then change same files permission to read only will yield an always active second core.
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How much do you undervolt?

My S3 was getting really hot after rooting so I decided to try undervolting. I was able to under volt each clock speed by -100mv, and my device hasn't seen any performance issues, runs cool, and battery lasts way longer! What do you guys keep you voltage settings at?
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dima470 said:
My S3 was getting really hot after rooting so I decided to try undervolting. I was able to under volt each clock speed by -100mv, and my device hasn't seen any performance issues, runs cool, and battery lasts way longer! What do you guys keep you voltage settings at?
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It doesn't matter what other people UV since all devices are different. I can reach -125 all steps (haven't tried farther) but some others can barely do -25. It's just how their device is built.

BWolf56 said:
It doesn't matter what other people UV since all devices are different. I can reach -125 all steps (haven't tried farther) but some others can barely do -25. It's just how their device is built.
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I understand. I'm just wondering what people are running at
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The reason I personally don't do both under clocking and over clocking is that the phone itself isn't made for that. I personally don't know what this phone can handle. I have seen people under clock and over clock phones and have it work while some people have phones that can't handle much at all especially the refurbished ones. My S3 handles it well but I only tried it out once. That's my feeling on the subject. If you do do either undervolting, under clocking or over clocking just remember to do it responsibly and not put it to highest power and leave it there.
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Does force hw acceleration do you more good or bad?

How's battery consumption compared to not forcing it?
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Justinhopaolo said:
How's battery consumption compared to not forcing it?
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Usually forcing the use of GPU does cause a difference in battery life, but the difference is unnoticeable. Maybe half a millisecond less of battery life.
Edit: My info may be wrong. I just read this in ICS days in a similar thread.

bmg1001 said:
Usually forcing the use of GPU does cause a difference in battery life, but the difference is unnoticeable. Maybe half a millisecond less of battery life.
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It should increase battery life since hardware acceleration usually means less stuff for the CPU to process which equals power savings.

Justinhopaolo said:
How's battery consumption compared to not forcing it?
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I enable it on every ROM i use after ramping up GPU to 384 without really thinking about it. Always has been solid for me. And yeah, im gonna say that it doesnt do a 'whole' lot for battery. But hey, another 5% on a charge? I'll take it.

Acvice said:
I enable it on every ROM i use after ramping up GPU to 384 without really thinking about it. Always has been solid for me. And yeah, im gonna say that it doesnt do a 'whole' lot for battery. But hey, another 5% on a charge? I'll take it.
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You're becoming my favorite here acvice haha.
Thanks for your answers.
Here's one more:
Does over clocking gpu makes your android experience smoother by a lot?
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Not unless you use lots of themes that are heavy on visual effects
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Snapdragon 800

I'm a huge gaming nut, I game on my pc, xbox360, ps3 and on my android phones. I've noticed that it doesn't take much time for the note 3 and it's gpu/cpu to heat up to the point where it's almost to hot to hold. This wasn't a problem on the note2 and it's exnyos cpu, I'm loving the slimness of the phone but thinking that's also why it gets hot soo fast.
I generally don't play too long, mostly 15-20 minute sessions of dead trigger 2, Asphalt 8 or Riptide 2. Anyone else notice this? I'm thinking maybe when the ZL battery comes thru and the extra bulkiness it will take a bit longer to heat up. That or maybe it's time for companies like Seidio,Otterbox etc to make some liquid cooled phone cases lol
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Found this out playing candy crush of all things. Phone got pretty hot in a short period of time.
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I suppose it depends on the game but my GN3 doesnt't get too hot playing the two games you mentioned and it's over clocked. I'm on Darthstalker 3.0 with leankernal if that makes any difference.
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How long are you playing the games? I'm not even overclocking, I'm on Omega rom with compulsion kernel. It's not a huge deal to me and don't think it happens all the time, could be the amount of apps installed on my phone too..
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Try the SaberN3 Kernel.... OC to 2.6 & all good...
Rogers GN3 SM-N900W8 Jedi Elite V3.1 OC-2.6gHz & Buttery Smooooth

Don't charge your phone while playing and it will run much cooler
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I'm not playing with the phone charging, matter of fact I just played about 4 missions on dead trigger 2 and it's already starting to get too hot. It's gotta be the snapdragon chip, none of my other phones have ever gotten this hot in soo little time.
Again I haven't overclocked or play while charging ever. This phone needs a water cooling case for reals lol
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Remove mpdecision from /system/bin (but just rename it.. Add "00" to the beginning or something) and run with all 4 cores online. You will find you get better battery life and your device will not ramp as much.
This is what I do personally...
Ondemand
Deadline
io_is_busy - 1
up_threshold - 95
sampling_rate - 20000
Stock has up_threshold at 85 or 90 if I'm not mistaken, way too aggressive for a processor of this caliber.
And mpdecision is way too aggressive. I don't need all 4 CPUs spinning up to max when I open my messages app.
Also, edit your /system/etc/init.qcom.post_boot.sh file to have this line it (see picture)
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Now that's a reply that looks helpful, I'll do all that test out some games and report back!
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Here is my battery life in a typical day with that setup I just described...
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Wow!
Did everything you said in your earlier post and I'm noticing it running way cooler now. Normally after 3-4 missions on dead trigger 2 it's getting pretty hot near the camera when holding it in landscape mode, now it just seems to idle normally.
So before I tweaked my system root and set cpu settings was it only utilizing 1 or 2 cores thus stressing more and making the snapdragon soc run hotter? These games are very graphic intensive and could use extra cores running to keep everything running more smoothly and cooler (which you have now achieved developmrntbro!!)
I advise anyone experiencing what I was dealing with to do the same and be amazed how much better it runs now, thanks again for the knowledge :good:
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Trying this out as well. I don't game, but I do a lot of downloading & streaming, and the phone does tend to get very hot during. I did this about an hour ago, I'm torrenting and so far it's still not hot and the battery isn't flying out the window like it usually would be. Nice!

wow this sounds a really good idea. did anyone just include this mod directly in their rom?

So if we have 4 cores why not take advantage of all 4 from the get go instead of having to do this mod?
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toneedo said:
So if we have 4 cores why not take advantage of all 4 from the get go instead of having to do this mod?
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I'm sure they all do run at some point, but this little tweak/mod seems to make them perform and work together better. The edits take less than 2 minutes honestly, it just took me a sec to find the part to add that additional line is all lol
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toneedo said:
So if we have 4 cores why not take advantage of all 4 from the get go instead of having to do this mod?
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Thanks for clarification... Will try this out!
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Yes very useful mod!
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My init.qcom.post _ boot.sh file looks different from the screenshot earlier in this thread. Where would I add that line? Why is it different?
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My Note 3 doesn't get hot like yours, unless I play a game such as Madden 25 over a 40 minute period, then it's moderately hot, nothing compared to my previous phones, and that list includes the Note 2. I love everything about this Note 3 except the camera, it has a hard time focusing on some things close up, and sometimes at a distance too, I resent the camera, I did see in another thread that I am not the only one with this problem, only problem is I did not wait for the root de la vega or else I would've ordered a replacement already.........

shorty87 said:
My init.qcom.post _ boot.sh file looks different from the screenshot earlier in this thread. Where would I add that line? Why is it different?
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Press enter at the end of the line and add the text posted. Mine looked like that too. Also you have to edit the mpdecision text as mentioned.
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