Database Info

Is there any solution to the battery drain on ics

i lose around 40 precent overnight everyday
its really frustrating knowing that i have to work with it full day afterwards
so is there any fix for this?

No idea what youre talking about. Mine only drains 20% with wifi and wifi apps running overnight.
Maybe you should look over what you got running, and if you got a custom kernel, reduce the lowest frequency of the cpu. Im running mine at 450Mhz or something.
Ooooor maybe 'overnight' for you is like 26h ?

You could also............
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suspense!
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Leave it on the charger over nite! I know. Shocking.

Download "BetterBatteryStats" from here and check which app is causing it. If you need assistance, just head over to BBS thread. Remember to attach your log file so it's easier for them to help you.

Hearmeman said:
i lose around 40 precent overnight everyday
its really frustrating knowing that i have to work with it full day afterwards
so is there any fix for this?
Click to expand...
Click to collapse
First thing, you should get CPU Spy from the market. This will tell you if your TF is going into deep sleep or not.
If you were experiencing the same issue under HC then ICS most likely wouldn't fix the issue anyhow.
Prior to ICS I was loosing about 25% over night which just shouldn't happen. I was rooted but stock otherwise. I unrooted my TF & completely wiped before flashing ICS. One cool thing about ICS is there is an intergrated task manager widget. You can see what programs are running at any current time. There were three programs that were constantly running that I disabled. Those were PixWE, Netflicks, & My Uploads. Netflicks kept wanting me to update but I don't use it so why update it? I simply disabled it and there are a whole host of other programs that can be disabled too.
With all this being said I am only loosing 3-4 percent over night running ICS completely stock.

Try airplane mode
There's an app in the market that simulates airplane mode, but allows wifi still. After I installed it I stopped losing battery overnight. It's basically a wake-lock issue.

2easilyamused said:
There's an app in the market that simulates airplane mode, but allows wifi still. After I installed it I stopped losing battery overnight. It's basically a wake-lock issue.
Click to expand...
Click to collapse
+1 This worked for me too but for a different reason. My TF tends to leave wifi switched on, even when told to turn off when the screen does. It could also be a rogue app as described above. Once you sort it out, overnight drain should only be a few percent at the most.

2easilyamused said:
There's an app in the market that simulates airplane mode, but allows wifi still. After I installed it I stopped losing battery overnight. It's basically a wake-lock issue.
Click to expand...
Click to collapse
Could please tell me the name?

How to diagnose here
I lose ~20% overnight in flight mode.
If I go Settings > Battery I see it's a lot of Android OS. But widgets must be included in that. So then I go settings > apps > running and see a few apps running, but I can't tell which of these is killing the battery and I don't know which app would tell me ((can I run top on the the commandline?)). I will experiment more and report back. I suggest you do that same.
This should go in the first post of this thread:
To diagnose this charge before sleep, put into flight mode overnight and look in the morning to see if the Android OS has been the culprit.
Perhaps you don't need any 3rd party apps for diagnose but if you need to be available for early morning calls use a profile scheduler.

Get a new Kernel
The main problem is the kernel in ICS, a way to fix this is changing your kernel, I do recomend the Test kernel from Guevor, install from version 11 to up, test it and keep the one you like. My tf is lasting fully with keyboard, around 30hrs.

I use test 13
but on .17 and not .23

I'm on ICS 4.0.3 with 3.0.8-NEO though
werewolferx said:
The main problem is the kernel in ICS, a way to fix this is changing your kernel, I do recomend the Test kernel from Guevor, install from version 11 to up, test it and keep the one you like. My tf is lasting fully with keyboard, around 30hrs.
Click to expand...
Click to collapse
My Nook got stolen and I'm waiting for a DroidPro to arrive so this would be on my main phone. When I've tried to flash just the kernel on it's own I've had problems before. This time I'll give it a go but am I missing something in terms of flashing a new kernel on?
I'm on ICS 4.0.3 with 3.0.8-NEO-3.0-TeamICSSGS-257174-g197c9a1-dirty (build *07)
Other than the possible battery problem it's been good. I just want to check to see if yo uhave anything more concrete to backup your decision... that a different kernel really might make any difference because that Test kernel from Guevor is very much in flux... I'd no idea which one to choose.Up to test15 now.
(thread for reference here: http://forum.xda-developers.com/showthread.php?t=1565519 )
For convienience it would be nice to backup the current kernel first as other than battery it's working well...
update, edit instead of bump:
ok, I lost 1% an hour last night in flight mode (6% over 5 hours) with all background apps and services killed. Does that seem about right? The interesting thing was that not all processes/services/backgrounded showed the same on different task killers...
I bet there's lots of people updating kernels when actually it's an app, or the left over effects of an app or something like that.

Hearmeman said:
Could please tell me the name?
Click to expand...
Click to collapse
Use Auto Airplane Mode by DON this fixed my problem with battery drain from the wifi staying on.After 4 days of use I still hade 35% battery left!

AOSP ROMs Battery drain (staying awake?)

Hello,
I've been flashing a bunch of AOSP roms and with all of them, i tend to get terrible battery life while idling. I've narrowed it down to my phone not sleeping while the screen is off. In the battery chart menu awake seems to be almost the same as the battery up time and the bar graph is almost a full solid blue. while i was searching i came across a post in cm forums blaming this on something to do with the gps and that disabling it and rebooting would fix it but this does not seem to work for me. Does anyone else have this and has anyone found a way to fix it?
I've also discovered a post whereby someone was running advanced task killer on an sgs2 to fix the same issue i'm having but i would rather not rely on a task killer if i don't need to. Any info, ideas, help, links etc are greatly appreciated!!
Your friendly neighbourhood Spiderman.

So, to narrow things down, I started off fresh
- Flashed stock 1.11 hboot from Telus RUU
- relocked then RUU
- unlocked, flashed TWRP 2.4.4
- Wiped SD, Cache, Dalvik, System, Factory Reset
- Flashed PA 2.54/Gapps (my fave ROM)
- Installed few apps. Friendcaster, Tunein Radio and Swiftkey
- Left it at 60% over night not charging
Low and behold, Awake time and screen on time were almost on par. However, I used it on the bus to listen to some tune in radio, browse the web etc and it seems as though one of the apps or maybe multiple are keeping the phone awake more than it has to be and it started draining again. not as bad as before, mind you. Most likely due to there being less apps. So at this point if I want to continue using AOSP ROMS it seems as though I will need to set up a task killer so nothing keeps my phone awake.
Tonight I will set it up and see what happens with my awake/screen on bars. I am fairly certain they will sync up afterwards. I tried to avoid a Task Killer but it seems as though I cannot! I will post my findings after for anyone else in this same boat though it seems very few are!

Get a program like better battery stats or Gsam battery monitor to tell you what your wake locks are
Sent from my VENOMized HoxL

[Q] Wifi issues and battery drain lollipop 5.01

Purchased the shield tablet with controller yesterday. It came with 4.4 and seemed to run fine (wifi speed very fast etc) Soon after upgraded to 5.01 and the problems started..
There seems to be the Miscellaneous entry under the battery settings which is using around 40% of the battery according to the info. Battery drain seems to be quite fast.
Since then, today I decided to unlock bootloader and root the device which was successful. Miscellaneous entry does not seem to appear anymore
However there is the wifi issue that has occurred since I updated to 5.01. When the tablet goes to sleep and when I wake it up, connection is lost (and rather annoying where a game needs to download 1gb+ of data). It does also occur while I am using the tablet. Wifi sometimes just disconnects (and the entry on the wifi list for my router is showing as "saved" - clicking on connect, starts it up again..
I have checked through the settings and disabled the wifi off when sleep option as well as gps only for location etc, but still to no avail.
Has anyone encountered and solved this issue on lollipop? Or is this also an issue with 4.4? I did not use it for long before updating to 5.01 hence not sure If that problem would occur then (but seemed blistering fast for the hour or so when I was testing it)

I'm having the same issue. I looked on the forums on their website and it seems this is still a problem for a good amount of people. Can't find any solutions though. Thought maybe a hard reset might do the trick but that didn't help. Pretty frustrating...

Wifi connectivity seems ok when I am near the access point, but seems that the sensitivity somewhat has been reduced since the update (as the connection was more stable and reliable further away from the router on 4.4)

Hows your battery after rooting? Does it still drain horribly?

I have the same problem
thealgorithm said:
Purchased the shield tablet with controller yesterday. It came with 4.4 and seemed to run fine (wifi speed very fast etc) Soon after upgraded to 5.01 and the problems started..
There seems to be the Miscellaneous entry under the battery settings which is using around 40% of the battery according to the info. Battery drain seems to be quite fast.
Since then, today I decided to unlock bootloader and root the device which was successful. Miscellaneous entry does not seem to appear anymore
However there is the wifi issue that has occurred since I updated to 5.01. When the tablet goes to sleep and when I wake it up, connection is lost (and rather annoying where a game needs to download 1gb+ of data). It does also occur while I am using the tablet. Wifi sometimes just disconnects (and the entry on the wifi list for my router is showing as "saved" - clicking on connect, starts it up again..
I have checked through the settings and disabled the wifi off when sleep option as well as gps only for location etc, but still to no avail.
Has anyone encountered and solved this issue on lollipop? Or is this also an issue with 4.4? I did not use it for long before updating to 5.01 hence not sure If that problem would occur then (but seemed blistering fast for the hour or so when I was testing it)
Click to expand...
Click to collapse
THAT DRIVE ME CRRAAZZZYYYY!!!! the same happens to me everyday and I can't find anything about it online.. somebody please solve our problem!

I think I have partially solved the problem. The below is what I have done (Will at some point activate some of these options one by one and see which one would be the main culprit)
Settings->Wifi->Advanced Wifi - Turn off Ethernet override and turn off "scanning always available"
Settings->Wifi->Advanced Wifi - Keep on "turn wifi on during sleep" - Can turn this option off for some additional battery life
Settings->Controller->Disable "enable gamepad mapper" - From other sources it seems that this may be one of the main culprits in battery power sucking
Settings->Location->Turn this off (If wanting to keep on, leave it on GPS only)
Using the above settings, and charging the tablet approximately 15 hours ago, the battery life of the tablet has decreased by only 6% (and currently there is no - miscellaneous showing on the battery option)
There is still the issue with weak wifi (It works perfectly well when the device is near the access point) perhaps a future update may increase the sensitivity somewhat

One other important thing.. I decided to hard reset the tablet after upgrading from 4.4 to 5.01. This may help. Once this is done, then follow the steps above

Did miscellaneous ever come back for you? I did reset and changed all the settings and miscellaneous wasn't there for about 2 hours and then came back. Down to 50% battery with miscellaneous taking up 17%. I'm now wondering if this is an issue with the software or my tablet in particular...

For me, once I disabled the gamepad mapper, I no longer experience the outrageous battery drain issue, and misc. no longer appears in the battery status page and has not returned.
Sent from my SHIELD Tablet using Tapatalk

I didn't experience this miscellaneous battery drain until the most recent 2.2 update. When I upgraded to lollipop I did a complete wipe, rooted and unlocked the boot loader. When I updated to 2.2 I just flashed via recovery and wiped dalvic/cache.
I'm wondering if I need to do a complete wipe. I haven't seen any solutions to this, but it's strange that it just now started to be a problem for me.

sky.walker said:
I didn't experience this miscellaneous battery drain until the most recent 2.2 update. When I upgraded to lollipop I did a complete wipe, rooted and unlocked the boot loader. When I updated to 2.2 I just flashed via recovery and wiped dalvic/cache.
I'm wondering if I need to do a complete wipe. I haven't seen any solutions to this, but it's strange that it just now started to be a problem for me.
Click to expand...
Click to collapse
The main culprit seems to be the "game mapper". - the system that maps the controller to touch screen controls. I guess perhaps updating to 2.2 turned it back on. Turn it off via settings and reboot and see if that makes any difference.

thealgorithm said:
The main culprit seems to be the "game mapper". - the system that maps the controller to touch screen controls. I guess perhaps updating to 2.2 turned it back on. Turn it off via settings and reboot and see if that makes any difference.
Click to expand...
Click to collapse
Thanks for the reply,
I turned the game mapper off via settings, and still got the misc. drain, so I froze the nvidia game mapper and a few other nvdia controller system apps via titanium back up and I'm still getting the misc. battery drain. I just wiped the cache, and dalvik cache 3 times, but I doubt that will do anything. It's looking like I will have to wipe and do a clean install, just seems so weird that something that didn't even change the android version number would give me this problem.
It's really annoying as the battery drains soo fast (like 20% just reading a book in my e-reader app)
before I wipe I just wanted to see if others had this problem with the latest update, as it doesn't appear too common I will do a full wipe later when I have time. I hope that fixes it.

sky.walker said:
Thanks for the reply,
I turned the game mapper off via settings, and still got the misc. drain, so I froze the nvidia game mapper and a few other nvdia controller system apps via titanium back up and I'm still getting the misc. battery drain. I just wiped the cache, and dalvik cache 3 times, but I doubt that will do anything. It's looking like I will have to wipe and do a clean install, just seems so weird that something that didn't even change the android version number would give me this problem.
It's really annoying as the battery drains soo fast (like 20% just reading a book in my e-reader app)
before I wipe I just wanted to see if others had this problem with the latest update, as it doesn't appear too common I will do a full wipe later when I have time. I hope that fixes it.
Click to expand...
Click to collapse
I have the exact same issues as you describe. WiFi is about 25% of what it should be even standing right next to my netgear nighthawk. All other wifi devices work fine in the house. Disabled game mapper and my misc is still running the battery down. Tried wiping to factory with no luck. System UI crashes sometimes and the tablet freezes up constantly (especially when using Chrome and Google search). I'm thinking it could be Google play services related but not definitely sure.

Sheild LoLi screen changes orientation, goes black then to homescren
So seems you peeps having same problems I have experienced and troubleshot as well, but here is one I can't figure out...
Playing game (TaiChi Panda mmorpg) which only runs in landscape mode. I will be playing and all of a sudden tablet tries to change orientation away from landscape, the screen goes black (or has game shrunk and stuck in middle of screen) then will go black and puts me at my homescreen which is non-responsive and most times I have to hard power down. I've turned off screen/device rotation and still does it. The problem also happens with other apps and stuff at times as well. I've even turned all notifications etc I could cause thought maybe something was trying to interfere.
I have the screen flicker as well at times, feel like watching old black and white movie way it flickers.
Battery lifes went up with some tweaks found here (ty vm!).

Sorry to bump such an old thread, but has anyone figured out what it causing these issues on Lollipop?

[Completed] My phone NEVER goes into deep sleep (Samsung Galaxy S6)

Dear all,
I am writing this post to hopefully get some help or directions regarding my issue, because I have already spent hours and hours looking on the internet trying fixes on my phone without anything working for me so far.. So I am getting a bit hopeless....
I recently got a Samsung Galaxy S6 (SM-920I model), and since the beginning i have been shocked by how CRAPPY the battery life was. To give you some ideas, my phone loses around 3-5% of battery per hour when idling and screen off, meaning I am not doing anything at all with my phone. Overnight, I lose about 15-20% battery with my phone on airplane mode, power saving, or whatever else you want, when it is not doing anything at all..
I know that my problem is a deep sleep problem, quite easy to identify i guess, so I have spent a lot of time reading and trying to fix it by myself but so far nothing worked.
To give you some background, after unpacking the phone I quickly upgraded Android from 5.0 to 5.1.1, so I cannot tell how it was working at 5.0. It is only after that I saw that a lot of people have issues on 5.1, but it is strange because just before having my S6, I was having a OnePlus One on 5.1 and I didn't have such battery problems and everything worked fine except turning off the "keep awake" setting option for GooglePlayServices.
What I can say though, is that since I upgraded I never had so much difficulties trying to fix a problem on any Android phone than before. Basically, since day 1, my phone never went a single time into deep sleep mode.
So far, to fix this, I tried all the following:
- Reflash the stock firmware (Samsung 5.1.1) --> many times, with full Cache/davik wipe and factory resets
- Root my phone using UniKernel
- Install custom ROM (I am running XtreStoLite version 2.2) + all kinds of wipe/factory reset
- Flash different kernel that are shipped with the ROM (there are 5 different ones if I remember)
- Use my phone with only stock apps (to see if the problem comes from one of my apps)
- Cold reboots
- The "DeepSleepFix" using the Android terminal as described on some forums (cannot post the link for now since I'm new..)
- And desperately, try to use my phone normally for now
Overall, I would say that my battery would last roughly 15 -20h in total with normal usage, not even heavy, which quite sucks..
I can show the no deep sleep issue easily to you with some screenshots (will put a link to the screenshots here when I have 10 posts... for now I can't..) , I have tried many applications to try to find the root cause such as:
- WLD
- 3C CPU
- BetterBatteryStats
- GSAM
etc.
I am monitoring my phone closely for the past 1-2 weeks and so far I have never seen it being in deep sleep at all (ah yes... 0.2s in total max all the time..). Also, when I check on the default Battery menu of Android, after a full day I would usually see "Android OS" on top and using 20-30% of the battery at least.
The problem seems to boil down to a process called "LHD" in the kernel wakelock. This is keeping my phone awake 100% of the time, whether I am using the phone or if I am not. However, even with this info I tried to search online and I cannot find anything about "LHD", so I am really stuck right now.. Do anybody knows what it is and why it is a problem for me?
If any of you have a solution or can give me some guidelines to help me fix this issue, I would really appreciate any help. If you need more information from me also let me know.
Thank you for taking the time to read me,
Best regards.

ImPain said:
Dear all,
I am writing this post to hopefully get some help or directions regarding my issue, because I have already spent hours and hours looking on the internet trying fixes on my phone without anything working for me so far.. So I am getting a bit hopeless....
I recently got a Samsung Galaxy S6 (SM-920I model), and since the beginning i have been shocked by how CRAPPY the battery life was. To give you some ideas, my phone loses around 3-5% of battery per hour when idling and screen off, meaning I am not doing anything at all with my phone. Overnight, I lose about 15-20% battery with my phone on airplane mode, power saving, or whatever else you want, when it is not doing anything at all..
I know that my problem is a deep sleep problem, quite easy to identify i guess, so I have spent a lot of time reading and trying to fix it by myself but so far nothing worked.
To give you some background, after unpacking the phone I quickly upgraded Android from 5.0 to 5.1.1, so I cannot tell how it was working at 5.0. It is only after that I saw that a lot of people have issues on 5.1, but it is strange because just before having my S6, I was having a OnePlus One on 5.1 and I didn't have such battery problems and everything worked fine except turning off the "keep awake" setting option for GooglePlayServices.
What I can say though, is that since I upgraded I never had so much difficulties trying to fix a problem on any Android phone than before. Basically, since day 1, my phone never went a single time into deep sleep mode.
So far, to fix this, I tried all the following:
- Reflash the stock firmware (Samsung 5.1.1) --> many times, with full Cache/davik wipe and factory resets
- Root my phone using UniKernel
- Install custom ROM (I am running XtreStoLite version 2.2) + all kinds of wipe/factory reset
- Flash different kernel that are shipped with the ROM (there are 5 different ones if I remember)
- Use my phone with only stock apps (to see if the problem comes from one of my apps)
- Cold reboots
- The "DeepSleepFix" using the Android terminal as described on some forums (cannot post the link for now since I'm new..)
- And desperately, try to use my phone normally for now
Overall, I would say that my battery would last roughly 15 -20h in total with normal usage, not even heavy, which quite sucks..
I can show the no deep sleep issue easily to you with some screenshots (will put a link to the screenshots here when I have 10 posts... for now I can't..) , I have tried many applications to try to find the root cause such as:
- WLD
- 3C CPU
- BetterBatteryStats
- GSAM
etc.
I am monitoring my phone closely for the past 1-2 weeks and so far I have never seen it being in deep sleep at all (ah yes... 0.2s in total max all the time..). Also, when I check on the default Battery menu of Android, after a full day I would usually see "Android OS" on top and using 20-30% of the battery at least.
The problem seems to boil down to a process called "LHD" in the kernel wakelock. This is keeping my phone awake 100% of the time, whether I am using the phone or if I am not. However, even with this info I tried to search online and I cannot find anything about "LHD", so I am really stuck right now.. Do anybody knows what it is and why it is a problem for me?
If any of you have a solution or can give me some guidelines to help me fix this issue, I would really appreciate any help. If you need more information from me also let me know.
Thank you for taking the time to read me,
Best regards.
Click to expand...
Click to collapse
Hello and thank you for using XDA Assist.
Sorry to hear about your trouble but we cannot provide technical support nor can other members reply to your posts here on XDA Assist. Fortunately there is an XDA area dedicated to the Samsung Galaxy S6 at http://forum.xda-developers.com/galaxy-s6 which would be a good starting place. I suggest you post your question with all relevant details in the friendly Q&A forum there at http://forum.xda-developers.com/galaxy-s6/help where the experts familiar with your device will be best able to guide you.
Good luck!
This thread is closed.

Need help on battery life and CPU usage

I have a Samsung Galaxy S7 and the battery was doing fine. A few weeks ago the phone started getting quite slow and the battery life went way down. I had installed a few apps around then, so I removed them and still battery life was bad. I tried restarting the phone and that didn't help. At the time I was running Marshmellow and I was using OSMonitor to watch the system. I was finding that Android OS was taking most of my battery and 30% of the CPU all of the time. Not long after that Nougat became available and I upgraded thinking that might help. It didn't help and OSMonitor no longer worked. I switched to GSam Battery Monitor and used adb to give it the permissions to see all app information. I'm still finding that the Kernel is taking 28% of my battery and Android System is taking 37% of my battery and I can't figure out why. I would rather not need to do a full reset and install all of my apps and settings again, so I'm asking if anyone out there has ideas on things to try and fix this. This is a non-rooted phone running the stock image from Samsung/Verizon.
Thanks for any help.

try activate the Battery Saving option and use it for a day and see if helps

I've had this happen to me before. The phone was getting seriously hot while it was happening too. I decided to do all I can without doing a factory reset (I was on vacation at the time, so no access to something to backup my data).
I cleared the cache of all apps. Then I disabled all of the stock apps I didn't need (like Gear VR). I also shuttered apps running in the background to about a max of 3 apps open at any given time. That stopped the insane heat issue, but Android System was still sucking 30% of the battery. I turned off Always On Display, that got me down to about 25%. A factory reset got the phone down to around 10%, and I never saw the issue again.
Before you do that I would recommend checking out this thread below as there does appear to be a bunch of other possible solutions provided by others.
https://forum.xda-developers.com/s7-edge/help/how-experiencing-android-battery-drain-t3327730/page51

Djuganight said:
try activate the Battery Saving option and use it for a day and see if helps
Click to expand...
Click to collapse
But then my background syncing is turned off too...
I didn't need this before, so wondering why I should need it now.

I had same issues and was able to fix it. See the following thread for details.
https://forum.xda-developers.com/showthread.php?p=71558514

Try this , it helped me a lot .
Download from the XDA forums the Kernel named : "Apollo Kernel" v7
Just flash it , and when you install it , if you dont use your phone for high end games or hard work,that requires high end specs , then you can underclock the cpu/gpu .
It s a battery life saver, plus , your components will be much better in terms of thermals/life