Database Develop

[Q] Read battery log after restart

I have an issue I'd like to debug, but I need some information to help myself:
I charge my SGS (JM1) in the evening, when it's 100% full I disconnect the charger and go to bed (23:30), phone switches to airplane mode at 24:00. When I get up 8h after, my phone is off and has absolutely no battery left.
This happens every now and then, IMHO there's no app causing this (haven't installed anything lately). I can't reproduce the issue.
How would I best debug this and try to find out what's causing the battery drain?
Can I still read the battery log after a restart?

What apps Di you have and what Firmware?
Sent from GT-I9000 Jpm OS kernel with z4mod

DamianGto said:
What apps Di you have and what Firmware?
Click to expand...
Click to collapse
Firmware JM1 (rooted)
Apps:
aContacts
Alchemie
aLogcat
AnDream
Angry Birds
APNDroid
AppsOrganizer
Asphalt 5
c:geo
CallTrack
Coloroid
Explorer
GC Tools
geniewidget
GeoHunter
GPS Test
handyCalc
ICD Auskunft
Jorte
K-9 Mail
Kitchen Timer
Meraki Wifi
N-TV
OpenSudoku
RTM
SGS Tools
Snowstorm
Solitaire
Stats
Terminal Emulator
Timeriffic
wetter.info
Xing

Don't see Amy bad apps.
You can.use sgs toolbox to see the battery usage is.
Some make the phone almost never go in powersave mode.
Sent from GT-I9000 Jpm OS kernel with z4mod

Thank you so far.
I looked at the battery usage stats and saw that bluetooth was enabled for more than 7 hours (although it was disconnected). That IMHO shouldn't have completely drained the battery though...

I am seeing the same problem recently; the battery drains out really quickly in no time even when there are no major apps running. Even the battery usage menu shows nothing major. During this time I have noticed that the phone gets really hot and the battery indicator app shows that the battery temperature as b/w 40-50 C (its around 25-35 C when there is no issue). During this time I can't even make calls or send/receive SMS!!! Seems that it just cannot get a network signal.
There were no such issues for the last couple of months. I can't imagine an app directly or indirectly causing this.

If an app keep the phone awake all.the time and use wifi/Bluetooth/gps it will drain the phone fast.
The only solution is to find out where the flaw is.
Personal i would backup the phone and do a complete wipe/ reset of the phone so it will be clean and like new. Then i would test to se if it drain the battery.
If it does then it is broken and need a.repair. Else i would start to intake the apps i need, but looking close what they do.
Sent from GT-I9000 Jpm OS kernel with z4mod

SGSI said:
During this time I have noticed that the phone gets really hot
Click to expand...
Click to collapse
Ex-act-ly the same for me!
I will disable all self-installed apps via pm disable and see what happens.
I'll then report back...

Have you installed any lagfixes recently? When I had voodoo lagfix on jg4 I would get at best 8 hours of stand by time. As soon as I flashed jpm I get 1% drain per hour
Sent from my GT-I9000 using XDA App

I have not installed any lagfixes, my phone is on stock JG4 firmware. The battery life is otherwise very good, only at times (very random) the battery starts draining from 100% to 0% in a matter of few hours.I use System panel to check if there is any app that is causing this, but it does not indicate anything like that.
The only thing that I can think of is that the phone for some reason looses network (I can't make a call and send/receive sms during this time) and keeps trying to reconnect without success and hence drains out the battery. Once I reboot the phone everything becomes fine and the battery usage becomes normal. Is there any way to find out that the phone is trying to connect to the mobile network and this is causing the battery to drain out?

Neither do I, never used any lagfix so far, I'm on stock JM1.
The only thing that I can think of is that the phone for some reason looses network and keeps trying to reconnect
Click to expand...
Click to collapse
That's possible but I don't know how to log this...
Gnarf, it just happend again. Before going to work it was all normal, now it's frozen.
I connected it to my computer, but WinXP recognized it as an unknown device.
ADB doesn't work, else I had pulled the logfiles.

maybe u should consider upgrading to JM7 or JM9. and before installing apps do a full reset and cache wipe.

MagicOnline said:
maybe u should consider upgrading to JM7 or JM9.
Click to expand...
Click to collapse
I'm waiting for CM 6.1 to sort it all out, given that "FroYo by Samsung" still isn't what I expected it to be - at least judging from the betas.

[Q] [ASK] HElp to find out what causing this battery drain

hi all..
2 weeks ago I finally bought my very first android based HH, GNOTE...currently I'm running on ICS LPF Taiwan unroot, and very love it. one of my concern on this ICS, is the battery drain so much, considering it just sit on my pocket.
i have CPU Spy and BBS Installed, and found that it just Deep Sleep 48% and 200MHz 37 %. Kernel Wakelock is "multipdp" 25% Power Manager Services 21,2% and secril_fd-interface 19.25.
could you please tell me what causing this battery drain so much..?

The best thing that you could do is do a Factory Reset, but with all the bricking problems it's highly discouraged. I don't recognise the processes, but you should make sure that you deleted all the apps you never use, since one of then could be causing the problems you have.
Sent from my Nokia 3310 4.0.3 via XDA

After upgrading to German ICS, also had problems with wakelocks (phone never sleeped)
Done this (posted on XDA somewhere) and it worked:
Turn Flight Mode ON
Turn Off the Phone
Take out the battery for 30 secs
Plug battery back
Turn on the phone
Wait until all is loaded and turn off Flight Mode.
Also, always disconnect from the charger with screen ON and unlocked.
After using this 2 metods, never had a wakelock again (multipdp etc)
Regards
NM

thanks a lot for both of you....
will try these steps.....and will comeback with the result....

nunosm said:
After upgrading to German ICS, also had problems with wakelocks (phone never sleeped)
Done this (posted on XDA somewhere) and it worked:
Turn Flight Mode ON
Turn Off the Phone
Take out the battery for 30 secs
Plug battery back
Turn on the phone
Wait until all is loaded and turn off Flight Mode.
Also, always disconnect from the charger with screen ON and unlocked.
After using this 2 metods, never had a wakelock again (multipdp etc)
Regards
NM
Click to expand...
Click to collapse
i've tried those two methods, and still got multipdp issue...
i also have disabled the fast dormancy with *#9900# command, but still no effect, ...could you please or someone give another way to solve this..

Stop syncing from your gmail account.
The big one is unplugging charger with screen on.
Sent from my GT-N7000 using Tapatalk 2

adv1sory said:
Stop syncing from your gmail account.
The big one is unplugging charger with screen on.
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
thanks for your answer for my question...
regarding that did you mean that i have to stop receiving email on my Galaxy Note..?? for me that's really important since i bought my note to support my daily job...
is it the main cause..? if yes, i think i should buy another battery as a way out.

I also have encountered the same problem with my galaxy note after the stock ics update in India.
I have checked out the earlier posts on the same issue..
Some users had the problems of deep sleep and some others had other problems..bt as far i have been able to understand this problem...it is associated with those apps which we often use..for eg i had been using apex launcher for so long...and it used to suck my phones battery like hell also coz of the widgets and the other things that it use.
So what i did was a simple factory reset and a data wipe and didn't install the apex launcher again.
I let my phones battery drain completely and charged it till 100% and simply rebooted it and removed the battery too. And its working good now.
Those things which suckedy battery included android system and display...i could do any thing about display but i force stopped may process of android system and results are good.
One more reason for battery drain could be that when we go backs from the apps on stock ics on galaxy note..the apps do not get closed comletely like stock web browser which works in the background too..so might be other reason for so.
Don not install those apps which u dont use often coz they might work in background add unnecessorily suck ur bettery.
Try the battery pull off trick it really works for majority of users.
Force close those apps and processes which u feel unnecessory.
Those whose claim ics doesnt work smooth on their note they pls go the develpers option in settings and enable the force GPU rendering option then it will work smooth like anything...
One more thing which u may already know about galaxy note ics is that now it runs all the tablet apps on ur note! Thats pretty amazing coz u need not root it or do anything...for me it worked with the apps like...adobe idea, adobe photoshop touch and all other adobe apps and some other tablet apps..download these apps directly from 4shared..so cheers!!!
Those who are not happy with their battery pls try factory reset and battery pull off trick...it worked for me and it might work for u too my friend...

if you are entering deep sleep at all then you aren't being affected by the bug where you have to make sure your screen is on and unlocked before pulling it off the charger.
i suffered from this bug after updating to ics lpy, but since following the guide above (flight mode, power down etc.) i've had no issues.
let your phone completely discharge, then turn it back ona dn make sure it turns off again. then fully charge it. i found this increased the accuracy of the battery a little, when i did it it dropped from 10% to 1% in around 20 mins, then i was able to use the phone for almost half an hour on 1% so obviously my battery stats weren't quite right.
if you've done a factory reset, and you're sure the phone is entering deep sleep ok, just go through a couple of complete charge/discharge cycles and see if that improves things

gayanaji said:
hi all..
2 weeks ago I finally bought my very first android based HH, GNOTE...currently I'm running on ICS LPF Taiwan unroot, and very love it. one of my concern on this ICS, is the battery drain so much, considering it just sit on my pocket.
i have CPU Spy and BBS Installed, and found that it just Deep Sleep 48% and 200MHz 37 %. Kernel Wakelock is "multipdp" 25% Power Manager Services 21,2% and secril_fd-interface 19.25.
could you please tell me what causing this battery drain so much..?
Click to expand...
Click to collapse
Analyzing is tought on android.
Printscreens of kernel wakelock and partial are better.
Partial is mostly what exactly is keeping awake
Try some of the suggestions from the numerious threads, state them here whicj didnt work and describe usage a little more detail, that way we arent shooting in the dark
Sent from my GT-N7000 using Tapatalk 2

i still got this issue regarding multipdp and secril_fd_interface....maybe it caused by unstable network or the fast dormancy stuff...
so i went to nearest samsung center and buy a spare battery... now i have no concern about this...but still keep on eye with l2_hsic...the flight mode on and restart will solve this issue..
Sent from my GT-N7000 using xda app-developers app

I was having battery drain issues myself. Got tired of checking CPU Spy and BBS etc. Worried about bricking and wiping so I...
I rooted the phone.
Installed SpeedMod Kernel 3-3 via mobile odin that didnt really solve it.
I installed Abyss kernel. Wiped everything because its supposed to be a safe wipe kernel.
Then installed Criskelo rom
Then installed SpeedMod Kernel 3-3 again and everything was great with battery life.
You have to reinstall apps and setup your phone basically but its well worth it in my opinion. Now my only battery drain is me always messing with my phone.

@jbeef 86
i am using my GNOTE to support my daily acts. i have so many heard that many of cusroms has issues with the especially s-note app....
is it true..???
Sent from my GT-N7000 using xda app-developers app

I upgrade with Kies
had Battery Issues & was slugish
I format my Internal 16gb card
& did a factory reset & have done it twice
people tell me i was lucky but i dont think so & it worked for me
workd great now but slugish when im in contacts edit
Battery Life is Great No Issues
If you want can start System Power Saving that helps alot

ilordvader said:
& did a factory reset & have done it twice
people tell me i was lucky but i dont think so & it worked for me
Click to expand...
Click to collapse
I would stay away from telling people this is a safe thing to do in ICS, it's been proven many times it is not.
Maybe you have been lucky - so be thankful you're not using a paperweight...

gayanaji said:
@jbeef 86
i am using my GNOTE to support my daily acts. i have so many heard that many of cusroms has issues with the especially s-note app....
is it true..???
Sent from my GT-N7000 using xda app-developers app
Click to expand...
Click to collapse
@gayanaji - I use Criskelo's ROM and all the Samsung apps work fine. No probs here. Many of the custom ROMS are based on other Kernels that the Samsung apps do not work with. I am a bit new to this but I believe that is correct. Just make sure to use a Samsung app compatible Kernel if you decide to do it. Also another piece of advice before doing anything read a bunch to make sure you fully understand everything with regards to rooting, flashing custom ROMS etc.

[Q] Samsung Galaxy Note critical battery life after 4.1.2 update

Hello!
I know that there were a lot said about battery problems in 4.1.2 android, but i still haven't found any solution on my problem. My Note was bought with GB 2.3.6 and had an awesome battery, but after i updated it to JB 4.1.2 (via Kies), suddenly battery life is catastrophic. I have everything off (bluetooth, wi-fi, gps), my screen brightness is on minimum, i use my phone on GSM band (not 4g), i also disabled some of unused apps, etc...everything said was also my practice on previous version 2.3.6 and phone battery lasts up to 4 days, but now, it drains off in 17hrs and I barely use my phone!
If I check battery stats, it shows that screen is the major consumer of battery and it seems like it is on all the time, although the phone screen is physically off most of the time. It means something causing my phone being awake all the time instead of being off.
Any ideas how to fix this??

ajvek8558 said:
Hello!
I know that there were a lot said about battery problems in 4.1.2 android, but i still haven't found any solution on my problem. My Note was bought with GB 2.3.6 and had an awesome battery, but after i updated it to JB 4.1.2 (via Kies), suddenly battery life is catastrophic. I have everything off (bluetooth, wi-fi, gps), my screen brightness is on minimum, i use my phone on GSM band (not 4g), i also disabled some of unused apps, etc...everything said was also my practice on previous version 2.3.6 and phone battery lasts up to 4 days, but now, it drains off in 17hrs and I barely use my phone!
If I check battery stats, it shows that screen is the major consumer of battery and it seems like it is on all the time, although the phone screen is physically off most of the time. It means something causing my phone being awake all the time instead of being off.
Any ideas how to fix this??
Click to expand...
Click to collapse
4 days? really? think that is unheard of. Either how, it should last longer than 17 hours.
Try going back to factory settings, perhaps theres something running thats divided by zero :silly: .
If you feel adventurous you can also choose to root & try a custom rom. Though thats your responsibility and choice entirely.

Anthropostar said:
4 days? really? think that is unheard of. Either how, it should last longer than 17 hours.
Try going back to factory settings, perhaps theres something running thats divided by zero :silly: .
If you feel adventurous you can also choose to root & try a custom rom. Though thats your responsibility and choice entirely.
Click to expand...
Click to collapse
Yup 4 days, not kiddin...4 days of average use.
I forgot to mention that i already did the factory reset and i also wipe the cache partition in recovery menu... I disabled practically everything, and i use things when i need, nothing is set on auto, sync or anything. Last night I didn't touch the phone for about 9 hrs and battery consumption was around 1% which is ok, but it's draining everytime i turn on the screen like 5% in 10mins. BBS shows that well known GTALK_ASYNC_CONN as a battery eater. Is it possible to kill this annoying thing on un-rooted phone???

Insane heat and battery drain when screen on

Hello, I've been looking for solutions to this problem for a while now. Basically when my screen is on and system is awake the top part of my screen and backside will heat up to about 50C, it burns on the touch. Betterbatterystats gave a temperature of 52C and avg of 50. Needless to say, my battery also runs out very quickly like this, also dropping about 5% an hour when the screen is off.
Another thing I've noticed is that SDcard takes 25% of my battery usage, and when I go to storage settings, it will infinitely calculate. I mounted my storages and chkdsked them, fixed some corrupted files but the problem still persists. The only storage I haven't mounted is the internal storage, which I'm unable to do. I can't seem to connect to adb from recovery and mounting /data alone does nothing. After about 10 mins of using the phone, it becomes too hot(burns my hand) and it will shut down.
I've replaced 2 batteries so it's very unlikely that it's a battery issue. Also tried other chargers and wiping everything.
Phone OS: 4.1.2 stock LT5 before.
Did factory wipe/dalvik wipe + flash to CM11 4.4.4 and the problem is still present.
Betterbatterystats doesn't indicate a draining app, just high temperature.
Removing the external SD card and sim card had no impact.
I'm getting deep sleep when I turn off the screen, so it's not media scan being stuck. Mediascan disabled and problem still persists.
Pretty much out of ideas here, and hoping that you guys could help me out.
Any help is very much appreciated.

Poopfeast said:
Hello, I've been looking for solutions to this problem for a while now. Basically when my screen is on and system is awake the top part of my screen and backside will heat up to about 50C, it burns on the touch.....
Pretty much out of ideas here, and hoping that you guys could help me out.
Any help is very much appreciated.
Click to expand...
Click to collapse
It's not just you. I experienced the same, as have others, for example see http://forum.xda-developers.com/galaxy-note/help/process-bug-kitkat-roms-t2834819.
If you really need Kitkat I suggest Omnirom as it didn't have the heat issues when I most recently tried it out again, about a week or two ago. The other Kitkat ROMs I tried all turned my GT-N7000 into a hand warmer/hot plate, as did some older ROMs. There are good reasons why GT-N7000 is no longer officially supported in CM - really serious bugs with very few people still willing to try to fix them. Otherwise stock Samsung + root works great with no killer bugs and huge battery life Anyone still remember when this device first appeared and it was famous for having longest battery life of any smart phone? Run stock Samsung, rooted or not, and disable all the stuff you don't use, enable the power saving mode and it still is one of the best. Not kewl tho.....:laugh:

julian67 said:
It's not just you. I experienced the same, as have others, for example see http://forum.xda-developers.com/galaxy-note/help/process-bug-kitkat-roms-t2834819.
If you really need Kitkat I suggest Omnirom as it didn't have the heat issues when I most recently tried it out again, about a week or two ago. The other Kitkat ROMs I tried all turned my GT-N7000 into a hand warmer/hot plate, as did some older ROMs. There are good reasons why GT-N7000 is no longer officially supported in CM - really serious bugs with very few people still willing to try to fix them. Otherwise stock Samsung + root works great with no killer bugs and huge battery life Anyone still remember when this device first appeared and it was famous for having longest battery life of any smart phone? Run stock Samsung, rooted or not, and disable all the stuff you don't use, enable the power saving mode and it still is one of the best. Not kewl tho.....:laugh:
Click to expand...
Click to collapse
Thanks for your response. I wasn't aware of this situation. But I was having this heating problem on Samsung stock firmware 4.1.2 too?
edit: just flashed to omnirom and it's still burning my hand.
In the team win recovery repairing internal storage gives me the error: unable to repair /emmc, so I just wiped it, problem is still there.

Poopfeast said:
Thanks for your response. I wasn't aware of this situation. But I was having this heating problem on Samsung stock firmware 4.1.2 too?
Click to expand...
Click to collapse
The heat comes when the CPU is working at max. This should be quite rare but can occasionally go on for a long time, for example if there is a lot of media content to be indexed. This would usually happen for just a few minutes after booting. Example: I use Archos video player and it indexes 1000s of movies on my home LAN via smb or upnp - this adds some overhead at startup but then settles to zero impact. It can also happen on connection changes as these are a trigger for lots of apps/services to activate/phone home/update profiles or content and so on. You could also experience heavy load on CPU if your 3G connection and/or wifi signals are poor and the device is constantly seeking better signal.
Some stuff you can do:
in stock Samsung enable power save mode - this limits the max CPU state to 1000MHz.
in a rooted custom ROM you can use any of several utilities to do the same.
This makes near enough no difference to normal use but will just throttle back the CPU when it is trying to max out.
You can disable notifications for open wifi networks.
In stock Samsung you can safely disable any of the apps that you don't use.
In rooted custom ROM you can do the same but you also have the ability to disable stuff which you need just to boot to a working environment so be careful.
Disable GPS when you don't need it. Disable bluetooth if you don't need it.
and so on....
If you use an external microSDHC card try it formatted as exfat instead of fat32/vfat. There is a horrible bug with spontaneous unmounting of the extra cards but it works better if they are formatted exfat.
On rooted stock Samsung my Note runs nice and cool and just warms up a bit if I spend hours playing games. It never gets hot like it did with custom ROMS. If I get into a mega brain dead bug eyed game session with sound high and screen on and very bright I get about 6 hours battery life. If I use it a bit more normally I get anything from 10 to 17 hours between battery changes, with screen time between 3 and 6 hours, and that includes using batteries that are a couple of years old. I never even got close to this kind of performance with custom ROMs. YMMV etc.

julian67 said:
The heat comes when the CPU is working at max. This should be quite rare but can occasionally go on for a long time, for example if there is a lot of media content to be indexed. This would usually happen for just a few minutes after booting. Example: I use Archos video player and it indexes 1000s of movies on my home LAN via smb or upnp - this adds some overhead at startup but then settles to zero impact. It can also happen on connection changes as these are a trigger for lots of apps/services to activate/phone home/update profiles or content and so on. You could also experience heavy load on CPU if your 3G connection and/or wifi signals are poor and the device is constantly seeking better signal.
Some stuff you can do:
in stock Samsung enable power save mode - this limits the max CPU state to 1000MHz.
in a rooted custom ROM you can use any of several utilities to do the same.
This makes near enough no difference to normal use but will just throttle back the CPU when it is trying to max out.
You can disable notifications for open wifi networks.
In stock Samsung you can safely disable any of the apps that you don't use.
In rooted custom ROM you can do the same but you also have the ability to disable stuff which you need just to boot to a working environment so be careful.
Disable GPS when you don't need it. Disable bluetooth if you don't need it.
and so on....
If you use an external microSDHC card try it formatted as exfat instead of fat32/vfat. There is a horrible bug with spontaneous unmounting of the extra cards but it works better if they are formatted exfat.
On rooted stock Samsung my Note runs nice and cool and just warms up a bit if I spend hours playing games. It never gets hot like it did with custom ROMS. If I get into a mega brain dead bug eyed game session with sound high and screen on and very bright I get about 6 hours battery life. If I use it a bit more normally I get anything from 10 to 17 hours between battery changes, with screen time between 3 and 6 hours, and that includes using batteries that are a couple of years old. I never even got close to this kind of performance with custom ROMs. YMMV etc.
Click to expand...
Click to collapse
Thanks for taking your time to write this. I've already disabled GPS/sync and turned on power saving. Clearing the storage now lets android calculate properly, and the Media/sdcard is gone from battery usage. But it's still running very hot and draining. CPUspy says 20% on 1400 and the rest on 800mhz when I'm using it. The system is freezing often and generally really slow.
EDIT: just used eMMC check and it says I'm brickbugged :'(
type VYL00M
Ran the test but it says passed.
Temperature seems to drop to a reasonable 35C when I'm in airplane mode.
With everything on and sync off it's not going above 40C even when watching videos or something, so I guess it's all good now.
So basically what I've done to fix it:
Wipe internal storage and repair all partitions
Flash to OmniROM
Turn off Sync/GPS
Problem seemed to be mainly on the internal storage corruption, maybe related to my bugged chip.

Poopfeast said:
.....
EDIT: just used eMMC check and it says I'm brickbugged :'(
type VYL00M
Ran the test but it says passed.......maybe related to my bugged chip.
Click to expand...
Click to collapse
According to eMMC Brickbug Check my Note is exactly the same as yours - supposedly "Insane chip" but Memory check passed with no problems, and guess what? It works 100% perfectly running 4.1.2 rooted. I have the full capacity of storage available to me, apps do not freeze, everything works as good as new. It is absolutely stable and reliable and terribly boring (just how I like it). It never surprises me or does any weird stuff at boot or crashes or freezes. All the hardware features work, all the supported video and audio codecs and formats work, the networking is rock solid, I can rely on my VPN when away from home, GPS gets a fix in no time, battery life is excellent, video playback is great etc. etc..
I bought my 16GB GT-N7000 a few months ago, a used item on ebay. It is an unlocked retail UK item (boxed with all manuals, paperwork, accessories etc) so no network/vendor bloatware but it was supplied by the seller with Supernexus ROM installed and was obviously suffering from the usual problems often described by users of custom ROMs on exynos. After various frustrating episodes and trials of different ROMs I used ODIN 3.09 to flash an official Samsung ICS 4.04 firmware and 16GB pit file to restore the partition table and stock firmware. Then I ran Kies on Windows XP on the "virgin" restoration. It recognised the hardware and the firmware and notified me of the update to 4.1.2. I went ahead and updated over ethernet and also captured the official 4.1.2 firmware for purpose of backup.
Since then I have tried out various ROMs and have always been able to revert to stock Samsung 4.1.2 via ODIN and without going back to the scary brickbug "insane" ICS versions. As far as I can tell the brick bug is irrelevant if you aren't stuck on ICS. After trying numerous ROMs of various android versions I am in no doubt at all that if you spend half the time setting up a rooted stock Samsung firmware as most people spend setting up ROM X/Y/Z you actually get a much more reliable and useful device.
If you need a known-good pit file for a 16GB GT-N7000 you can use this: ftp://takla.linuxd.org/Q1_20110914_16GB.pit

I had a similar issue lately. Go to developer settings and activate the cpu load display. Processes and their cpu load along with a bar graph will appear on the screen. I found out that google's music app was hanging on my phone. This did not show up in BetterBatteryStats!!!

I9295 becomes very hot and huge battery drain

Hey guys
I already posted my problem in the thread related to LineageOS, but since the issue couldn't be solved I want to try it this way.
So what is my problem?
While using my phone it gets very hot. According to Powerful Monitor the CPU gets up to 65 °C and battery up to 35 °C, while under load. Besides this my battery goes down rapidly. So watching 10 minutes of YouTube sucks up 8-9 % battery. Just a plain normal video.
What is my setup?
I9295, running LineageOS 14.1-2017-06-06-UNOFFICIAL-jactivelte, OpenGApps 06-07-17 nano, only apps installed manually are GeekBench, Powerful Monitor and YouTube. Baseband is I9295XXUDOB4 (German unbranded DBT). I bought a new original Samsung battery and currently using it. So it's basically stock LineageOS.
What have I already tried?
- flashed stock firmware (all available for Germany that are unbranded). With and without erasing NAND, with different Odin versions. Last time I flashed I used Odin 3.07
- different batteries: the old ones the phone came with (bought it used), the new one I bought separately, a new one from PowerCell with higher capacity (2900 mAh)
- different phones. I have a second I9295 from a friend, that worked definitely without any issues. Same problem.
- different custom ROMs: now I'm running LineageOS, but I also tried CM13 (20161228), CM12.1, MIUI and Super WizCyan (everything from xda)
Is it possible break something ciritcal when disassembling the phone? Both phones came with broken covers for the USB port, so I opened it, but only removed the screws and the mid-frame (?) and replaced the cover. Nothing was damaged, at least I was very carefully and didn't see anything that looked suspicious.
Another very strange thing I noticed:
If I use the phone a lot (lets say 30 minutes, so almost 25 % battery!) and after that the phone is not in use for an hour or so, the battery goes up for up to 7-8 %. How it that possible?
I really have no idea what else to do.
Any help is appreciated.

dotnano said:
Hey guys
While using my phone it gets very hot.
I bought a new original Samsung battery and currently using it. So it's basically stock LineageOS.
Any help is appreciated.
Click to expand...
Click to collapse
Hey there. Well, there are tons of possible reasons why your phone acts like that. My modest opinion is that you have some sort of wakelock active in background. Install both Wakelock Detector and Gsam Battery Monitor, grant all the permissions and let it obtain data for some minutes. Than look at the results, and check if there's any Wakelock active. If instead Gsam shows an excessive consume by the kernel, try in terminal the following commands:
Code:
su
setenforce 1
setenforce 0
Then see if there's still the drain (you have to wait some minutes).
If it still doesn't work, I'd advice you to update to the latest stock firmware (doesn't matter which Country, just select a non-branded one), reinstall LOS again and verify if with nothing installed you still get the battery drain.
Anyway, IMHO it's not an hardware related problem, even messing up with the components this shouldn't happen. The only hardware fault could be the battery short-life, but 1st you said you just replaced it, 2nd it would not justify the thermal overload. Let us know

Thank you very much for your answer. I'm quite short on time next days but maybe I have a few minutes on sunday.
On the matter latest stock firmware: already tried that on monday, still too much battery drain, but I didn't install LOS till now. Maybe sunday.
But still thank you

Finally I found some time to try your suggestions
I skipped the part of trying it on the old setup, so I flashed everything new with latest stock(UDOB4-DBT, not the last one but still Android 5.0.1), then TWRP 3.1.0, after that LOS 14.1-20170606 and OpenGApps 7.1 nano from 17-06-06. Only apps I installed beside that are GSam Battery and Wakelock Detector. Root activated and granted where asked and needed.
Here I uploaded the pictures I took from GSam Battery.
So what seems strange to me:
- why is Phone Radio used at all? I don't have a SIM card inserted...?! It's on a very high level, even if the screen isn't on.
- The battery gets hot quite fast. If it's not in use, everything is fine. But as soon as I use the phone it gets hot.
- As you said: kernel usage seems quite high, tried to install "Terminal Emulator" and executed the commands - no difference.
According wakelock: where do I check that?

dotnano said:
- Why is Phone Radio used at all? I don't have a SIM card inserted...?! It's on a very high level, even if the screen isn't on.
- The battery gets hot quite fast. If it's not in use, everything is fine. But as soon as I use the phone it gets hot.
- As you said: kernel usage seems quite high, tried to install "Terminal Emulator" and executed the commands - no difference.
According wakelock: where do I check that?
Click to expand...
Click to collapse
Sorry for the delay, but if you do not quote/reply me I cannot see the message cause I'm not extremely active on XDA. Anyway...
- Phone Radio is used even without SIM, at least in TouchWiz, dunno in LOS, but it looks like so. The only way to disable it is Airplane Mode.
- It gets hot due to kernel usage, what I still do not understand is why it does so.
- Those commands where the only commands I think could be useful in this case (they set SELinux Permissive/Enforcing)
But if you say you get the Drain on TouchWiz too, the problem is serious and there's a (little?) chanche it would be HW related.

IvanCristina said:
Sorry for the delay, but if you do not quote/reply me I cannot see the message cause I'm not extremely active on XDA. Anyway...
- Phone Radio is used even without SIM, at least in TouchWiz, dunno in LOS, but it looks like so. The only way to disable it is Airplane Mode.
- It gets hot due to kernel usage, what I still do not understand is why it does so.
- Those commands where the only commands I think could be useful in this case (they set SELinux Permissive/Enforcing)
But if you say you get the Drain on TouchWiz too, the problem is serious and there's a (little?) chanche it would be HW related.
Click to expand...
Click to collapse
No need to apologise, you're doing this in your free time...
Besides that, I wasn't at home all week, so I couldn't try anything even if you had answered.
So, how do I get the kernel to calm down and stop draining my battery? I mean, I didn't install anything besides clean LOS and GApps. So what could lead to so much kernel usage? Are there any further information that could help you?

dotnano said:
Thank you very much for your answer. On the matter latest stock firmware: already tried that on monday, still too much battery drain, but I didn't install LOS till now.
Click to expand...
Click to collapse
I didn't read this post before, the points are two:
- No need to write Thanks, there's a button for it. It's free and very grateful
- If it drains even on stock it's a serious problem.
dotnano said:
So, how do I get the kernel to calm down and stop draining my battery? I mean, I didn't install anything besides clean LOS and GApps. So what could lead to so much kernel usage? Are there any further information that could help you?
Click to expand...
Click to collapse
The situation is very weird. Let's analyze.
1) TW/LOS doesn't matter. Battery drain in both
2) No apps installed which could cause wakelocks
3) Battery SHOULDN'T be the problem
4) The drain is recognised as kernel "usage", though it couldn't be real 'cause of point 1
5) Neither Permissive nor Enforcing SELinux mods helped
At this point it doesn't look so much a SW problem, but more an HW one. About:
dotnano said:
If I use the phone a lot (lets say 30 minutes, so almost 25 % battery!) and after that the phone is not in use for an hour or so, the battery goes up for up to 7-8 %. How it that possible?
Click to expand...
Click to collapse
Well, sometimes the discharge happens so fast the battery doesn't calculate the remaining capacity so well, and after some minutes the real charged cells are more than the "estimated" ones. It would explain the "goes up" of the percentage, but still not the drain.
It's very strange and very rare, but there's an infinitesimal possibility that the thermal paste went to the hell. And in this case there's not that much to do.
That's pretty pessimist though. I'd advice you to format everything, reinstall the latest stock TW and stick with it, and if it still doesn't work, try with some apps like Greenify and ForceDoze (this one works just with 6.0+) in order to at least TRY to reduce the drain.
I'm sorry I cannot help you more, if anyone has some suggestion, please let us know.

IvanCristina said:
I didn't read this post before, the points are two:
- No need to write Thanks, there's a button for it. It's free and very grateful
- If it drains even on stock it's a serious problem.
The situation is very weird. Let's analyze.
1) TW/LOS doesn't matter. Battery drain in both
2) No apps installed which could cause wakelocks
3) Battery SHOULDN'T be the problem
4) The drain is recognised as kernel "usage", though it couldn't be real 'cause of point 1
5) Neither Permissive nor Enforcing SELinux mods helped
At this point it doesn't look so much a SW problem, but more an HW one. About: Well, sometimes the discharge happens so fast the battery doesn't calculate the remaining capacity so well, and after some minutes the real charged cells are more than the "estimated" ones. It would explain the "goes up" of the percentage, but still not the drain.
It's very strange and very rare, but there's an infinitesimal possibility that the thermal paste went to the hell. And in this case there's not that much to do.
That's pretty pessimist though. I'd advice you to format everything, reinstall the latest stock TW and stick with it, and if it still doesn't work, try with some apps like Greenify and ForceDoze (this one works just with 6.0+) in order to at least TRY to reduce the drain.
I'm sorry I cannot help you more, if anyone has some suggestion, please let us know.
Click to expand...
Click to collapse
Next strange thing is, I have two S4 Active devices, both have the same problems. Am I just unlucky enough to get two broken phones?
Still, the device I got from I friend was ok the moment he gave it to me. He said battery lasted for only one day, but that would be ok. So it has to be something I did with the phone.

Youre are not alone. My Phone was/is also getting hot.
Then I did a full wipe ( format also internal memory partition!)
I'm current running cm13 (CM13 (20161228)). Batterie works now / normal ok / 1 / 2 Day s ( no great usage ). But when i telephone with someone it's getting hot in 15 min. Modem Version is I2995XXUDPB3.

dotnano said:
Next strange thing is, I have two S4 Active devices, both have the same problems. Am I just unlucky enough to get two broken phones?
Still, the device I got from I friend was ok the moment he gave it to me. He said battery lasted for only one day, but that would be ok. So it has to be something I did with the phone.
Click to expand...
Click to collapse
Have you flashed any custom ROM? Try downloading an entire stock firmware for your country / carrier from sammobile and flash through odin 3.09 and check. The S4 active generally gets hot on usage but should not get very hot. You can also try using powersave mode that limits cpu max freq and prevents heating. Battery on normal usage shoukd last for little under a day to a day with normal usage unless you are using data (otherwise set mobile networks to GSM only which saves battery and reduces heat)

JASONRR said:
Have you flashed any custom ROM? Try downloading an entire stock firmware for your country / carrier from sammobile and flash through odin 3.09 and check. The S4 active generally gets hot on usage but should not get very hot. You can also try using powersave mode that limits cpu max freq and prevents heating. Battery on normal usage shoukd last for little under a day to a day with normal usage unless you are using data (otherwise set mobile networks to GSM only which saves battery and reduces heat)
Click to expand...
Click to collapse
I have flashed the latest DBT (unbranded German) and I have the same problems. Does the version of Odin make a significant difference? I used 3.10.6.

dotnano said:
I have flashed the latest DBT (unbranded German) and I have the same problems. Does the version of Odin make a significant difference? I used 3.10.6.
Click to expand...
Click to collapse
Normally i have seen issues flashing through odin 3.10 and prefer 3.07 or 3.09. If the firmware flashed correctly and you do not have any issues then it should be fine.
CPU temp of 65% without powersave mode is fine and watching youtube videos does consume battery. Try a different charger / cable combination as that too can have issues. If the battery gets charged quickly (on stock kernel under 2 - 2.5 hours from 0 to 100) then there is definitely an issue with the charger and it will drain quickly too.

JASONRR said:
Normally i have seen issues flashing through odin 3.10 and prefer 3.07 or 3.09. If the firmware flashed correctly and you do not have any issues then it should be fine.
CPU temp of 65% without powersave mode is fine and watching youtube videos does consume battery. Try a different charger / cable combination as that too can have issues. If the battery gets charged quickly (on stock kernel under 2 - 2.5 hours from 0 to 100) then there is definitely an issue with the charger and it will drain quickly too.
Click to expand...
Click to collapse
I tried 3.10, 3.12 and 3.07 so far. Not successfully. Tried 3.09 now, we'll see.
I have a Sony Xperia Z1C as comparison, YouTube needs maybe 1% for 5 Minutes.
Cables/Chargers shouldn't be the problem. I have the original Samsung, also cable. Charged to 0 to 75 % in 90 Minutes. Same with cable and charger from Anker. So should be fine?

So no new ideas?

dotnano said:
So no new ideas?
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Click to collapse
I have no idea too but i have the same Trouble with mine BUT I'm still using the original Rom and didn't flash it. So maybe it is an Hardware issue.
My Battery is getting old, yes, but it is the third one. The Phone gets hotter than in its first years.
I hope you'll find a reason!

My i9295 always has been like this: 1 minute on-screen time = 1% battery loss. So this basically is a 2 hour phone... Stock or custom rom didn't matter. A friends i9505 used a lot less power, therefore I assume that the LCD (instead of the S4's AMOLED) is the problem.

Vardion said:
My i9295 always has been like this: 1 minute on-screen time = 1% battery loss. So this basically is a 2 hour phone... Stock or custom rom didn't matter. A friends i9505 used a lot less power, therefore I assume that the LCD (instead of the S4's AMOLED) is the problem.
Click to expand...
Click to collapse
Nah, why should it? There are a lot of i9295 users that don't have any problems.