Develop Bugs

How hot does your S3 get?

When I'm on mobile data with GPS running, I noticed the bottom of half of my S3 getting pretty damn warm. Is this normal?

Just started using mine I'm feeling the same heat
Sent from my SPH-L710 using xda app-developers app

No heat here.. downloaded a 840mb file over 3g for A span of like 3 or 4 hours and didn't get any heat at all
Sent from my SPH-L710 using xda app-developers app

Mine also gets quite warm. I can't believe yours wasn't cooking after downloading that file
Sent from my SPH-L710 using xda app-developers app

Are you guys all running stock kernel and ROM or custom? I'm on stock.

Ha! Try hours with GPS, Bluetooth music and Tethering on... the heat seems to really hit while I'm charging and doing all that. Fact! I can't touch the ass end of the phone. It probably gets about 8 hours a week like that. Still working perfectly. Samsung tells me it's normal. It also has a lot of factors for me too. I use a 1 amp charger. After 96% it's not so bad. At night when brightness is down. Not as hot. I tried to get it to mess up but couldn't. GPS, Bluetooth, tethering, charging from 30% and 100% display, and I pushed out to a low coverage area. Didn't miss a beat or melt. Lol.
Sent from my SPH-L710 using Tapatalk 2

Navigation makes phones really hot, but with normal usage it should stay within 30-36°C.
I like this phone's heat management more than my old phone. My Evo 3d would get hot from 10 min usage.
On this, my screen has been on for 2 hours straight and I'm running at a cool 35.1 °C.
Sent from my Sprint SGS3

yousefak said:
Navigation makes phones really hot, but with normal usage it should stay within 30-36°C.
I like this phone's heat management more than my old phone. My Evo 3d would get hot from 10 min usage.
On this, my screen has been on for 2 hours straight and I'm running at a cool 35.1 °C.
Sent from my Sprint SGS3
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How do you check the temp?

clankfu said:
How do you check the temp?
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Download this app:
https://play.google.com/store/apps/details?id=com.darshancomputing.BatteryIndicator
In the notification it will tell you the battery temperature.
Sent from my Sprint SGS3

yousefak said:
Download this app:
https://play.google.com/store/apps/details?id=com.darshancomputing.BatteryIndicator
In the notification it will tell you the battery temperature.
Sent from my Sprint SGS3
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gracias

clankfu said:
When I'm on mobile data with GPS running, I noticed the bottom of half of my S3 getting pretty damn warm. Is this normal?
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When I was running CM10 for a day or two I thought my phone would melt but it was also 90+ degrees outside so it was hard to tell. My phone gets a little warm, but nothing too worrying.

greengoldmello said:
Mine also gets quite warm. I can't believe yours wasn't cooking after downloading that file
Sent from my SPH-L710 using xda app-developers app
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I downloaded teamsonic Rom while at work and no heat.. just murdered my battery. Went from almost 90% to dead by the time it downloaded
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tdwp16 said:
I downloaded teamsonic Rom while at work and no heat.. just murdered my battery. Went from almost 90% to dead by the time it downloaded
Sent from my SPH-L710 using xda app-developers app
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When you downloaded that, were you on stock ROM and kernel?

This is to be expected. It is pretty high clock rate too but seriously a huge improvement from the gs2
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clankfu said:
When you downloaded that, were you on stock ROM and kernel?
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No I was on the previous version of team sonic Rom.
Sent from my SPH-L710 using xda app-developers app

I get stupid heat when i play with my phone for abot 30 min.....its crazy.....guess every thing comes with a cost specially if this phone is this thin.
Sent from my sprint galaxy s 3, finally have lte

freecharlesmanson said:
This is to be expected. It is pretty high clock rate too but seriously a huge improvement from the gs2
Sent from my SPH-L710 using Tapatalk 2
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It actually shouldn't be expected. The Snapdragon S3's also ran at 1.5ghz and was pleasantly cool and the Exynos on the Galaxy Note was at 1.4ghz. Both are less power efficient and should run hotter than the S4. I've used the Evo LTE for a while with the same S4 and it barely got warm on a hot day. The issue is with the second core being weird. For those that hasn't already, make sure you flash Freeza's fix, http://forum.xda-developers.com/showthread.php?t=1790061 . This fix made my phone cool and got rid of my quickly draining battery life.

Most of the time my phone will stay within "normal" (to me) range, but when I game heavily... it turns into an oven range! I've gotten so paranoid a few times, I took the battery out and let it cooled for 5-10min

Im having the same problem....it isnt the software thats causing this its the hardware
Sent from my SPH-L710 using xda premium

I hope you guys will repsond to this... What do you consider to be "normal" temperature for your phone to reach? Is 35 degrees realy normal? Ive heard people with s3 talk of theirs only reaching temperatures of 29 degrees max.
Thanks.

Undervolting

I am more into undervolting rather than overclocking. I do this in order to maximize battery usage. I was wondering how many of you are able to undervolt by -50mV and still have a stable phone? I have been undervolted by -25mV and everything is great.

50 should be no problems at all. Every phone varies, but normally you can get away with at least 100mv under volt with little issues.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

Undervolting? Wow this is news to me lol
Sent from my SGH-I317M using xda app-developers app

ElAguila said:
I am more into undervolting rather than overclocking. I do this in order to maximize battery usage. I was wondering how many of you are able to undervolt by -50mV and still have a stable phone? I have been undervolted by -25mV and everything is great.
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I undervolt 100 on pegesus Kern no problems!

I am on -50 right now on the perseus kernel. Trying to squeeze a little more out of this already great battery life. I couldn't make it a full day on the original note and ended up using one of the pregnant looking extended batteries. Now this phone combined with the undervolting I can easily last the whole day on the stock battery.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

Seems like -100mv is the stable max so far for this device. Battery life is amazing on the note 2!

rsalan said:
Seems like -100mv is the stable max so far for this device. Battery life is amazing on the note 2!
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The battery life on this is the best I have seen so far on smartphones. I am finally able to use my live wallpapers without the battery going dead before the day is out!

i posted my successes undervolting the galaxy note 2 here
http://forum.xda-developers.com/showthread.php?t=1997838
Sent from my SGH-I317M using xda app-developers app

Battery life on CM10

Hows your battery life? Mines is horrible tempted to go stock pre root wiped stats and cpu governed down to 400 mhz max and brightness low running wifj only plus my keys magically stopped working
Sent from my SPH-D700 using xda app-developers app

Battery life was never good for me either on CM10. CM10.1 is a lot better on battery IMO

I've had fairly decent battery on CM9+
Sent from my SPH-D700 using Tapatalk 2

I'd say my battery life is about 2/3rds of what I got with the last RandomRom.
I just carry a spare battery and keep it plugged in more.
Funny thing is that a friend of mine who has an iPhone 5 gets roughly the same battery life as me, on CM10. She used to always ask me why I did not switch. Now she gets aggravated when I swap batteries as her phone is about to shut down and says, "Don't rub it in!"

Silly180sx said:
Hows your battery life? Mines is horrible tempted to go stock pre root wiped stats and cpu governed down to 400 mhz max and brightness low running wifj only plus my keys magically stopped working
Sent from my SPH-D700 using xda app-developers app
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Did you get your keys working again?

Silly180sx said:
Hows your battery life? Mines is horrible tempted to go stock pre root wiped stats and cpu governed down to 400 mhz max and brightness low running wifj only plus my keys magically stopped working
Sent from my SPH-D700 using xda app-developers app
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My battery life is about 2/3rds as to what I got with stock, but it really depends on use. It seems to use less power and last longer in standby than it did in stock, but more power when I'm using the browser/gps/3g. I tried CM10.1, but am getting better battery life on the latest 2013-01-20 CM10 build.
If your hardware keys are broke, you can enable the software keys. Add the following line to your system/build.prop file and reboot:
qemu.hw.mainkeys=0
I also created a flashable zip that adds the NavBar and resizes it so it takes up less space here: http://forum.xda-developers.com/showthread.php?t=2113542

When I was using CM7, my friend took my phone and underclocked it to 200Mhz and it killed my battery faster due to Android trying to keep the processor speed down.
Sent from my SPH-D700 using Tapatalk 2

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?
Sent from my Galaxy Nexus using xda premium
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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?
Sent from my Galaxy Nexus using xda premium

Not unless you use lots of themes that are heavy on visual effects
Sent from my Galaxy Nexus using xda app-developers app

4-5 hours of battery life.

I don't understand why but my phone is dyeing way too quickly and it's not so responsive (feels sluggish) as I want it to be. I see my friend has his HTC one and it's substantially faster then mine, both of us running all stock (mine is stock Rom but I'm using leankernel 6.8). I downloaded Better Battery Stats and I don't really see anything jumping out yet my phone usually lasts 4-5 hours with about one hour of screen time, sometimes I'm able to squeeze more. I have 90 apps on my phone, everything legit. I feel like it used to be much better before ..
Please advise.
Sent from my Galaxy Nexus using Tapatalk 4 Beta

the HTC one is faster. more memory, better processor. so thats a terrible comparison.
4-5hrs of screen on time or just 4-5hrs total?

Is it _THAT_ faster then GNEX? I'm running leankernel, mine is slightly OC to 1.2GHz. It seems like sometimes I could be running one or two apps and my phone would be really slow.
4-5 hours to drain 100% battery completely with about an hour of screen time.
Sent from my Galaxy Nexus using Tapatalk 4 Beta

its a quad core vs dual core, 2GB of ram vs 1GB of ram, so yes, its that much faster.
are you in a bad signal area? low LTE area (i assume you have verizon). give me a screen shot of your battery usage.

I'm not using LTE, I switched to 3G to save battery, right now I'm getting 3 bars out of 4 (-83dbm 4 asu)
Sent from my Galaxy Nexus using Tapatalk 4 Beta

looks like you're playing music the whole time over 3g, correct?

That is horrible btw.
My Verizon is running on 47min screen on time with 7h 15m 14s on battery and I have 62% left.
I'm not doing anything special with my phone either regarding "saving battery". Just standard official AOKP. No special kernels, undervolting, no special apps, etc.

Zepius said:
looks like you're playing music the whole time over 3g, correct?
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I did play some music and no it wasn't entire time, but I was using my phone.
Sent from my Galaxy Nexus using Tapatalk 4 Beta

player911 said:
That is horrible btw.
My Verizon is running on 47min screen on time with 7h 15m 14s on battery and I have 62% left.
I'm not doing anything special with my phone either regarding "saving battery". Just standard official AOKP. No special kernels, undervolting, no special apps, etc.
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I'm trying to stay on stock rom.
Sent from my Galaxy Nexus using Tapatalk 4 Beta

you should use the stock kernel as well.

Zepius said:
you should use the stock kernel as well.
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So, You're saying that stock kernel is better then leanKernel??

a1exus said:
So, You're saying that stock kernel is better then leanKernel??
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its possible. you could have undervolting too low, kernel could just not like your phone, etc
try with stock kernel, if you have the same results, we can go from there.

Zepius said:
its possible. you could have undervolting too low, kernel could just not like your phone, etc
try with stock kernel, if you have the same results, we can go from there.
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I don't really "undervolting" or any other tweaks other then install leanKernel and change "Power Mode" to "BestBalance" (it sets following: MaxCPU: 1305MHz, MixCpu: 384MHz, Governor: interactive, IO Scheduler: deadline, MaxCPU (screen off): 537MHz.
that is it...

a1exus said:
MaxCPU (screen off): 537MHz.
that is it...
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Touche. Takes the device so damn long to execute tasks it drains the battery.
a manta wrote this.

beekay201 said:
Touche. Takes the device so damn long to execute tasks it drains the battery.
a manta wrote this.
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I changed it over 700MHz, let's see if that helps..
Sent from my Galaxy Nexus using Tapatalk 4 Beta

a1exus said:
I changed it over 700MHz, let's see if that helps..
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Screen off max cpu speed over here is 1.2ghz.
a maguro wrote this.

I don't really see any difference, but if you think it'll help me, I can try setting it to 1.2, although I'm pretty sure this isn't why I'm getting so little time on my battery..
Sent from my Galaxy Nexus using Tapatalk 4 Beta

3g does use less power than 4g,but it still drains pretty fast. Use wifi whenever possible. Turn on auto brightness for display. If u have the Facebook app, delete it and use the mobile site.
Sent from my Galaxy Nexus using xda app-developers app

cnoevl21 said:
3g does use less power than 4g,but it still drains pretty fast. Use wifi whenever possible. Turn on auto brightness for display. If u have the Facebook app, delete it and use the mobile site.
Sent from my Galaxy Nexus using xda app-developers app
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.. and that's why I use 3G or WiFi whenever available .. I'm official beta tester of Facebook beta, I can always submit a bug report to Facebook if app is misbehaving).
Sent from my Galaxy Nexus using Tapatalk 4 Beta

If I was beta testing an app, I would try to have a very small number of installed apps.
AFAIK, the longer the device has to keep a wake lock, the harder it is on the battery.
And 1.2 GHz is stock max speed, not an OC implementation.
a maguro wrote this.