Database Users

oc'd phone heating up during normal use and poor battery life

Well ill start off by saying I'm new here and this is my first post. I'm also very new to this stuff and have a lot to learn. A buddy of mine recently rooted and overclocked my phone using the sense 2.6.32.21 1.5ghz oc/uv kernel. I currently have it set to 1.19 max 768 min and am experiencing temps above 107 running emulators and just web browsing.. I am also seeing pretty poor batt life even using battery booster and advanced task killer.. any help is greatly appreciated!

Battery apps and task killers tend to have the opposite of their intended effect on battery. Android has a built in utility to watch battery usage, why do you need a 3rd party one? Also do some reading on task killers, you will see why they are unnecessary on Android. I've stopped using one and my phone runs faster and more stable than before.

768 min is VERY high. Might explain the heating and battery life drain quite a bit.
Try this for me, please. Set your governor to interactive and drop your min down to 245. Run that for a whole charge. You may be surprised.
Sent from my PG06100
Also, I second the post above me. Advanced Task Killer and anything like it ultimately cause more harm than good. Battery apps, such as Juice Defender, also shouldn't be necessary. Although, it is YOUR phone.

Thanks a lot for the replys. I set the min to 245 and am seeing serious changes in temps. I also uninstalled atk but installed appkik. I am also still running battery booster but may get rid of it soon.. I feel like this phone should have better batt life. Any suggestions?

bearsblack said:
Thanks a lot for the replys. I set the min to 245 and am seeing serious changes in temps. I also uninstalled atk but installed appkik. I am also still running battery booster but may get rid of it soon.. I feel like this phone should have better batt life. Any suggestions?
Click to expand...
Click to collapse
well they gave some suggestions. which it seems you dont want to listen to. you dont need task killers of any kind

Sorry I'm stubborn. Uninstalling now

No disrespect here, but seriously, if you don't know what and why you're overclocking, don't know the inherent risks, etc, why are you doing it?

Compusmurf said:
No disrespect here, but seriously, if you don't know what and why you're overclocking, don't know the inherent risks, etc, why are you doing it?
Click to expand...
Click to collapse
because all the cool kids are doing it smurf...duh.
But seriously, min. should not be set at anything greater then 245. Only use performance if you are benchmarking. Default at the moment should be interactive.

Just gonna add my 2 cents in from personal observation....after doing some reading on overlooking and stuff I've noticed when going into the different ## modes, the shift usually drops its processor cycles to pretty low numbers in the 200-300 mhz range when its just in standby or not doing anything...it only kicks it up when you need the power. So the heating up is probably caused by constantly running at what used to be its max territory...PLUS youre going above and beyond the original limits/specs at a constant so it never gets to relax even when the phone is idle...I hope that makes sense. So as one poster mentioned keep the min at the stock setting and if you really want to/need to then raise the max mhz to whatever your phone can handle reliably. Correct me if I'm wrong anyone who is more into the overlooked setups. Me personally, stock has been able to keep up with whatever I have thrown at it after 30 days and still getting 25+hrs on one charge.
Sent from my PG06100 using XDA App

I currently have it governed at 245 max screen off. Running 1.2ghz max interactive with no task killers or batt savers. Batt life seems to be somewhat better but temps still creep past 105. Thanks a lot for the info

alittle off of the beaten path, but i tried runing 245/1801 interactive on evervolv and noticed alot of random reboots. set it back at on demand and am having good luck with that. why is everyone leaning towards interactive??

Excuse me if I am wrong it's early and im too lazy to reread up on it but I believe the difference is with on demand there is a slight delay(second or two) and it gradually kicks up to where it needs to be where is interactive is a spike the second you need it...

JAREDR said:
alittle off of the beaten path, but i tried runing 245/1801 interactive on evervolv and noticed alot of random reboots. set it back at on demand and am having good luck with that. why is everyone leaning towards interactive??
Click to expand...
Click to collapse
Interactive is, usually, a lot better for battery life.
If you look at your cpu's scaling history when on the two, TYPICALLY, you'll see a whole lot more time in higher frequencies using ondemand.
That's not to say, however, that with some devices and some kernels they will act the same.
Sent from my HTC Speedy

Nexus 4 overheating issue

I know that overheating in nexus 4 is common problem, but today after installing custom ROM CyanogenMod 10.1 my phone has started overheating more quickly. Is anybody know any solution of it?

Pawan24 said:
I know that overheating in nexus 4 is common problem, but today after installing custom ROM CyanogenMod 10.1 my phone has started overheating more quickly. Is anybody know any solution of it?
Click to expand...
Click to collapse
overheating i doubt, what was the cpu and battery temperature? just because it feels warm, doesnt mean its overheated. when it actually overheats, first the cpu will lower in cpu speed(safety), then if that doesnt help itll shutdown. is the weather around you warm btw?

+1 @simms22
Also, if it's really getting to warm your phone would run unstable.

simms22 said:
overheating i doubt, what was the cpu and battery temperature? just because it feels warm, doesnt mean its overheated. when it actually overheats, first the cpu will lower in cpu speed(safety), then if that doesnt help itll shutdown. is the weather around you warm btw?
Click to expand...
Click to collapse
Thanks for your replay, I still don't understand why my mobile has started getting warmer more quickly ever since I've installed custom rom. I've hardly played any graphics intensive game on it so far.
I don't know from where to know cpu and battery temperature. Do I need to install any application from playstore? Weather around here is warm. On average 35-40 degree temperature.

My phone CPU reaches 70˚C and battery 50˚C when driving in my car, charing with gps on a this time of the year(hot as hell here as well).
Everything seems to be find, didn't even turn itself yet so I doubt theres anything to worry about.
My gf forgot her phone in the car stand in the sun for a few hours, when she came back it wouldn't turn on until it was cooler so you can be sure your phone can take care of itself.

Maybe your governor was changed when you flashed the ROM, depending on the governor (like performance) your cpu clock speed may be increased more often then with the original governor.
You can check your governor with apps like no-frills cpu or setcpu and check the temperatures with cpu z

Pawan24 said:
Thanks for your replay, I still don't understand why my mobile has started getting warmer more quickly ever since I've installed custom rom. I've hardly played any graphics intensive game on it so far.
I don't know from where to know cpu and battery temperature. Do I need to install any application from playstore? Weather around here is warm. On average 35-40 degree temperature.
Click to expand...
Click to collapse
its easier to use an app for battery and cpu temp. being 35-40C around you, id expect the phone to be warm most of the time. anyways, after installing a custom rom your device spends a lot of time syncing stuff. so itll be a little warmer than normal. after about a full battery cycle it should stop, and will be a little cooler. also, a reboot after several hours after a rom flash should help a little too.

Ok, thanks for your quick response.

will underclock provide realy more battery and reduce heat ?

hy there,
im on latest sokp rom on my g2 (d802)
i want to get more juice from my battery, so I setup my core setings at 1036 mhz max and minimum 300 mhz.
wil this provide me a lot off battery in real life and will it also reduce heat ? even if i watch hd movie or play graphical games

In theory yes it should but not as much as you think cause it will be offset because it will have to keep a higher frequency for a higher period of time. Temperature should be reduced a lot but keep in mind games will lag if they need the extra power

drivenby said:
In theory yes it should but not as much as you think cause it will be offset because it will have to keep a higher frequency for a higher period of time. Temperature should be reduced a lot but keep in mind games will lag if they need the extra power
Click to expand...
Click to collapse
hmm, well after i underclocked i played asphalt 8 for like 20 mins and game performance did not changed significantly. and i feel that the phone is now cooler then before when multitasking stuff.
is there also another way that can realy increase battery life besides underclocking.

abati said:
hmm, well after i underclocked i played asphalt 8 for like 20 mins and game performance did not changed significantly. and i feel that the phone is now cooler then before when multitasking stuff.
is there also another way that can realy increase battery life besides underclocking.
Click to expand...
Click to collapse
you also can try custom governors

Hey there, you may be suffering a placebo effect, it can give you a little extra juice, but in my opinion you get most of your battery with these 4:
1. Reduce timeout to 15sec.
2. Adjust screen brightness to be as low as possible (lux helps with this)
3. Eliminate vibrations of any kind (haptic feedback, notications that make your phone vibrate ex. whatsapp) and so on...
4. Data (Use Wifi if possible, 2g when you are not using your phone and airplane mode in some cases extend your battery for a lot too)
Don't expect to get more than 30 min of extra use changing your kernel configurations. ALTHOUGH if you are a heavy user (let us say, in this case, a heavy gamer) there are some kernel configurations you should check.
Also remember, if a task takes you 30min but only consumes 1 % per 30 min compared to doing the exact same task in 30seconds consuming the same 1% which one is worth it?
Phones hardware is way above the software we have available at this time, underclocking and undervolting is an option and you won't feel the difference but, as I've stated before, those are not the main issues of the battery drain.
I hope I've helped you out!

Only 4 cores are used

Hello,
I have a peculiar problem with my OnePlus Two
The faster A57 cores don't get activated, I have tried using Antutu, played Asphalt 8 And NFS NL for hours.
But the cores just won't get triggered
I'm using A1 CPU tool to monitor the same.
Even CPU Z wouldn't show me any activity on the other 4 cores while Antutu was running.
Any ideas? It's brand new can be returned
Oxygen OS - 2.1.1
A2003_14_151011
Sent from my C6602 using XDA Free mobile app

Denhot said:
Hello,
I have a peculiar problem with my OnePlus Two
The faster A57 cores don't get activated, I have tried using Antutu, played Asphalt 8 And NFS NL for hours.
But the cores just won't get triggered
I'm using A1 CPU tool to monitor the same.
Even CPU Z wouldn't show me any activity on the other 4 cores while Antutu was running.
Any ideas? It's brand new can be returned
Oxygen OS - 2.1.1
A2003_14_151011
Sent from my C6602 using XDA Free mobile app
Click to expand...
Click to collapse
I just installed A1 CPU to verify your issue.
It shows cores 0,1,2,3,4 are used at 1344ghz for me as well.
When i check with synapse (i'm on AK kernel) it shows all cores are used.
I guess it's a limitation with A1 CPU tool. Try with other tool that supports such architecure.

I was sceptical on the same but, out of the box I remembered seeing 1777 MHz frequencies.
Thanks a lot
I shall try more tools and get back.
Though I think if you're on a different kernel and had the A1 CPU tool been correct it would be redundant, Because core allocation would be done on kernel level (in my knowledge).
Sent from my iPad using Tapatalk

I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?

jemcik said:
I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?
Click to expand...
Click to collapse
Hi Jemcik, hi Denhot!
I'm facing the same issues on my new device and it's definately not normal!
With a battery level of 19% I was not able to get the 4 A57 cores online, which results in lower system performance. Have you found a solution?
@Denhot!
Maybe we should rename the thread into: IS OPT PERFORMANCE REALLY DEPENDENT ON BATTERY STATUS AND IS IT A ROM FEATURE OR AN ISSUE!?
I think, one of the kernel devs should be able to answer this question.

ollimi1 said:
With a battery level of 19% I was not able to get the 4 A57 cores online...
Click to expand...
Click to collapse
It looks like some system configuration files with kernels activation policy have to be edited,
but I haven't found yet which files exactly.

jemcik said:
It looks like some system configuration files with kernels activation policy have to be edited,
but I haven't found yet which files exactly.
Click to expand...
Click to collapse
I've never experienced such a function!
CPU power depending on battery voltage!? 62k with full battery, 49k with 20% battery both with same CPU temps!
Hopefully not a general problem on our side with the motherboard Voltage Regulator or something.
Have you been to a kernel thread and asked this question? If not, I will ask this in AK's kernel thread. Maybe he knows more about it!

The 4 high performance cores will only be activated when needed. What app are you using to check the core usage? Every now and then you should see 2 of the high performance cores sometimes coming to life every now and then, with the other 4 power efficent cores being more busy. Use CPU-Z to check.
Due to the way Oxygen OS's stock kernel works, only 2 of the high performance cores will ever be active, alternating between the 4 cores in an attempt to keep the phone cool and not throttle as often. If you want all 4 high performance cores to be active as well as overclocking it back to its original speeds, you'll need to flash a custom kernel.

jemcik said:
I know that it was already discussed but maybe someone has found a solution.
The problem is that performance of device gradually decreases proportionally to the level of the battery.
For example:
- battery is 90%, Real Racing 3 runs perfectly,
- battery is 45%, some lags appear during gameplay
- battery is 10%, heavily FPS drop, almost impossible to play
Battery saver is turned off, device is cold in all tests.
If I would like to save my battery level - I will turn on battery saver manually,
but I WANT to have good game experience not depending on battery level
This is really crazy.
Tested on stock OOS 2.1.1, with stock kernel, with Boeffla an AK, tested on Exodus ROM - everywhere I can see this weird behaviour.
May be some system files must be edited to overcame this issue?
Click to expand...
Click to collapse
Hi,
would like to share I don't have a similar experience, with NFS NL or Asphalt, phone was consistent with no lags even when it got unbearable to hold.
I as playing and simultaneously screen mirroring over to a TV.
Going from 65 to 25% over a long course.
I normally won't let my battery fall below 20%.
So the thing about Li-ion/pro is that as you go lower voltage decreases so to provide same power draw current increases.
Basically it would heat up faster.
That can be a reason combined with that their might be inbuilt measures to save battery like you said, nor as an engineer I would recommend you to stress your phone at those levels.
I can't explain the lag at 45%, didn't find it might try real racing 3 later to check.
Sent from my iPad using Tapatalk

trapistasajt said:
The 4 high performance cores will only be activated when needed. What app are you using to check the core usage? Every now and then you should see 2 of the high performance cores sometimes coming to life every now and then, with the other 4 power efficent cores being more busy. Use CPU-Z to check.
Due to the way Oxygen OS's stock kernel works, only 2 of the high performance cores will ever be active, alternating between the 4 cores in an attempt to keep the phone cool and not throttle as often. If you want all 4 high performance cores to be active as well as overclocking it back to its original speeds, you'll need to flash a custom kernel.
Click to expand...
Click to collapse
This is consistent with what I've noticed. The time It didn't, a simple reboot helped solve it and it hasn't occurred since.
Also these tools can't monitor the other cores, if you're rooted why not try synapse as helkat suggested
Sent from my iPad using Tapatalk

Denhot said:
This is consistent with what I've noticed. The time It didn't, a simple reboot helped solve it and it hasn't occurred since.
Also these tools can't monitor the other cores, if you're rooted why not try synapse as helkat suggested
Sent from my iPad using Tapatalk[/QUOTE
Thanks man!
I know how the S810 should work!
But I thought the performance issues have only to do with the temps. But now it seems it have also to do with the battery level.
It would be good if someone tries to reproduce the following to verify it:
1. One run Antutu benchmark with fully charged battery and room cool temps.
To be sure the conditions are the same, shut the display off for one or two minutes, than start display again, kill all recent apps and run Antutu test and note the results.
2. Than wait or do something until your battery is down to 20%, shut the display off for the same time, kill recent apps and start Antutu test run again and compare the results.
I've also tried the same after a reboot, with always the same results.
With 100% I get scores between 60 and 66k and with lower capacity (20%) I get only 48 till 50k!
I am not interested about the benchmark results, but I need to know if this only occurs on my side.
Click to expand...
Click to collapse

So, guys!
I have tested it the last few weeks and it is a fact that the performance in benchmarks is dependent by the battery level.
We have tested it with 3 devices and it is always the same.
But thank God, it seems on the devices perfomance themselves (in apps/ui) this has no effect!
But each one can replicate this behavior very easy!

ollimi1 said:
Hi Jemcik, hi Denhot!
I'm facing the same issues on my new device and it's definately not normal!
With a battery level of 19% I was not able to get the 4 A57 cores online, which results in lower system performance. Have you found a solution?
@Denhot!
Maybe we should rename the thread into: IS OPT PERFORMANCE REALLY DEPENDENT ON BATTERY STATUS AND IS IT A ROM FEATURE OR AN ISSUE!?
I think, one of the kernel devs should be able to answer this question.
Click to expand...
Click to collapse
I have the same issue! When battery level goes lower than 20%, my A57 kernels become offline. I checked this with CPU-Z and PerfMon. And this is the same on stock or custom kernel. Now I am using Boeffla kernel. The most frustrating is that my UI suffer from this. I have lot of lags in simple apps, such as calculator or some messengers.

Same issue here, there are threads in one plus forums.
I think the threashold level is at 40 % ?? They made this to keep the battery up. You can also see faster battery drop till the 40-30% mark then it is harder to kill the battery.
I am also dissapointed in this, maybe we can search the kernel sources ? Or is there a daemon app that triggers this?
I received the phone with 20%-30% battery, started an antutu knowing how powerfull 810 chip is, then boom 45k same as the previos phone i had with 801 chipset...i was like what the fxck....runing antutu again with full battery - 66k.

well i have run benchmark in back ground with few game and apps .. and checked with cpuz max that i have notice was around 50-60% cpu load still 2 off those a57 cores were off using this device for 2-3 days it always turns off 2 cores for me rest 6 is working most of the time :/ Even in battery saver mode .. i am not sure if this is a cpuz issue as i have not rooted my device yet so cant say properly ..
Also i face some freq. benchmark issue like in benchmark it scores around single core - 690 multicore - 2.6K .. and if i restarts device it scores normal - 1.1K and 4.5K .. i have no idea whats wrong with this :/

20% Battery Mark
The drop in performance at 20% Battery is standard behavior of the Rom and Stock Kernel. The Big Cluster (A57) is completly shut down to save Battery. If you dont want this you have to use a custom Kernel which is able to switch this Battery saving strategy off. Boeffla Kernel for example can do that.

Read http://www.anandtech.com/show/9828/the-oneplus-2-review/2.
They "optimized" the soc.....
No they just turned off some cores so there is no heat problem.
So I think this is my first and latest oneplus.

they've hit the mark! What the hell, i think they must be sued for false marketing. Its just like buying a car with 400 hp and those hp are only there when i'm parked or listen to music, if i'm on the highway or on the ridge the car has 100 hp...wtf :|

Killer2k8 said:
they've hit the mark! What the hell, i think they must be sued for false marketing. Its just like buying a car with 400 hp and those hp are only there when i'm parked or listen to music, if i'm on the highway or on the ridge the car has 100 hp...wtf :|
Click to expand...
Click to collapse
Calm down lol it's actually good on their part. Shutting down A57 cores on low battery is a good thing because the A53 cores use much lesser battery. If you're out on a trip and have 10% battery, with the A57 cores this will probably drain off within an hour of intermittent usage. When only the A53 cores are active, the battery life will increase greatly.
Companies design phones for average users, not just gamers. If you don't want this feature, root your phone, flash boeffla's kernel and disable the BCL Battery Driver. It's as simple as that

Speed and Battery tweaks.

So I've been following this section for months and just got my a2017u 2 weeks ago. I'm rooted with tenfars tool still locked on b20. I've noticed in the last few weeks a tapering off of new and useful info for this phone and would really like to see what and where everyone is with it? LSpeed? Kernel Auditor? Or any tweaks that have helped either performance or battery life!!! Looking for anything to make this already great phone better!!! TIA

I have been using EX Kernel manager to tweak the settings as kernel auditor was not working properly with the big.LITTLE arrangement. I have upped the readahead value and underclocked the cpu to 1036mhz on the little cores and 1401 mhz on the big cores. working still as snappy and getting +2h SOT. I'm a heavy gamer and Asphalt 8 still plays as fluid as before, even better tbh due to less heating.
If you don't like to underclock, you could try these:
http://forum.xda-developers.com/htc-10/development/pnp-tweak-custom-butterfly-ghostpepper-t3431307

+2h? That's really good! I know overclocking can/could/might damage the CPU. Does underclocking have any of the same risks? I'm rooted and unlocked atm. So no warrenty anyway

aPexalpha said:
+2h? That's really good! I know overclocking can/could/might damage the CPU. Does underclocking have any of the same risks? I'm rooted and unlocked atm. So no warrenty anyway
Click to expand...
Click to collapse
Overclocking can't really harm anything. The excess heat might but it would take a long time and really high temps (you couldn't keep the device in your hands). The only thing you risk by overclocking is a system crash. Just reboot, lower the clock values and voilà ! So no, underclocking can't hurt anything. Overvolting however poses a real threat to the integrity of the components. It's quite the same thing as in computers (except for the heat, you don't always realize it's too hot in a computer).
That being said, is overclocking still even possible on smartphones nowadays ? Just for the fun of it because it's not needed in the least on the Axon 7 .
That's impressive results ! Not sure those hours are needed since the battery is doing well with the software power saver but still a good thing to know.

Still any extra sot is welcome. I'm not a gamer, don't really have any apps that truly need the full power of the sd820 so might give it a shot. Greenify does wonders for standby time.
Not sure if the built in 'intelligent country control' does anything tbh

I'm on my phone most of the day whether it be YouTube play music, texts,calls,etc.. I'm just hoping to find a balance between battery and my multitasking ADHD LOL

Nik2424 said:
I have been using EX Kernel manager to tweak the settings as kernel auditor was not working properly with the big.LITTLE arrangement. I have upped the readahead value and underclocked the cpu to 1036mhz on the little cores and 1401 mhz on the big cores. working still as snappy and getting +2h SOT. I'm a heavy gamer and Asphalt 8 still plays as fluid as before, even better tbh due to less heating.
If you don't like to underclock, you could try these:
http://forum.xda-developers.com/htc-10/development/pnp-tweak-custom-butterfly-ghostpepper-t3431307
Click to expand...
Click to collapse
Mine keeps switching back to 'normal' modes with CPU full on. Any idea how to fix that?

aPexalpha said:
Mine keeps switching back to 'normal' modes with CPU full on. Any idea how to fix that?
Click to expand...
Click to collapse
Yup, I had that problem too initially.
First, I made system changes persistent upon reboot by running this command in Terminal emulator(you can also use adb shell):
reboot disemmcwp
Secondly, you have to disable smart power in the quick toggles.
Once this is done, set your new max values, select the arrow next to it to make it applied on every boot and then reboot your device. It should work.
Note: Everytime you open the EX Kernel manager you will see the speeds jump to max for like 1 sec but if you actually check the cpu statistics you'll see that your settings are sticking and the max clock speed was just for everytime you open the app.

The smart power! I forgot that thing controls the CPU.
So that round arrow thing means apply on boot? I selected that, figured it meant something like that.
Cheers!