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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!

[Q] Android OS battery drain issue or battery is about to die??

It has been 2 years I bought this phone.
Nexus S i9023 world wide edition (code name crespo)
Generally it gave 24 hours battery backup. But now it gives only 12 hours backup hardly!!.
I tried all roms like cyanogenmod, slim rom, AOKP and original too.
Screens are attached.
let me know if you have any idea.
let me know if you want more information.
I am on wifi only in office, otherwise wifi and data plan is off.

U get high android os on all rom ?

If bought the phone two years ago, its the battery for sure. After 24 months and several hundred charges its not going to last anywhere near as long as when you first got it
Sent from my Nexus S 4G using Tapatalk 2

Android os is too high. Something is keeping your phone awake. I suggest greenify and hibernate all facebook, maps etc.. Also, some chat programs can be problematic if you dont use original hangout or google talk.

[SOLVED!!]
i have this problem with my galaxy grand phone ,the battery discharges in 20hr , default OS was 4.1.2 official samsung , i changed my rom into a slim custom rom based 4.2.2 , but the battery has same problem again , Android OS battery Usage Was 80% !!!! and screen usage just was 9% !
my installed software :
Viber
WeChat
MyKet {Like Android Market}
Weather Widget
i used wifi 1-2 hour in a day ,
=================================
[SOLVE]
first go to Settings -> Developer Options -> Apps Tab -> checked Don't keep activities
set brightness to auto
then go to location services -> off access my location
then go to wifi -> advanced Wi-Fi -> keep wi-fi on during sleep -> change to Never
now go to application manager -> Running Tab -> Force stop some apps with extra ram usage like settings
my phone just uses 5% battery in 13hr sleep mode ; ENJOY!

ohhacker said:
i have this problem with my galaxy grand phone ,the battery discharges in 20hr , default OS was 4.1.2 official samsung , i changed my rom into a slim custom rom based 4.2.2 , but the battery has same problem again , Android OS battery Usage Was 80% !!!! and screen usage just was 9% !
my installed software :
Viber
WeChat
MyKet {Like Android Market}
Weather Widget
i used wifi 1-2 hour in a day ,
=================================
[SOLVE]
first go to Settings -> Developer Options -> Apps Tab -> checked Don't keep activities
set brightness to auto
then go to location services -> off access my location
then go to wifi -> advanced Wi-Fi -> keep wi-fi on during sleep -> change to Never
now go to application manager -> Running Tab -> Force stop some apps with extra ram usage like settings
my phone just uses 5% battery in 13hr sleep mode ; ENJOY!
Click to expand...
Click to collapse
All I know is Android OS shouldn't consume 80% of battery when screen is off.
Wakelock detector app always giving me 80% awake and 20% deep sleep. and Phone was having kernel awake issue.
Two days ago I switched back to stock rom with no extra apps installed. and the issue was the same.
What I noticed that I turn of the CRT screen off option in Slimrom 4.2 build 8. and when I come back to stock rom, Obviously I did full format with bootloader, radio and recovery etc.. but CRT screen off was not working. What I guess is if we formatted /system /cache /data dalvik cache etc.. CRT off screen off should be reset and it should be turn on by default, as it was on when I purchased it!!!
So I guess there should be something like OEM unlock option which persist even you do full format. Some of the settings which is causing my kernel for keep awaking.
So I again planned to come back to Slim rom (As I noticed it is very active for my device). And the CRT screen option is working correctly now.
But my original problem of Android OS was still there. in 2 hours of screen off, kernel was awake for all the time, only 4 minutes of deep sleep.
I checked wakelock detector and saw mmc1_detect count as around >1800!!!!
I come back to XDA for solution and found that it could be for faulty SD card. Solution suggested is to go to setting -> storage -> unmount sd card and restart your phone or something (I don't remember actually). But since Nexus S has no external SD card, out of 16 GB, 1 GB is for phone internal and about 13 GB is for USB storage. But how can we unmount it??? Additionally even if I unmount, there is no use of smart phone, as photos and all important things are in SD card. I wasted 1 hour for finding an app that can toggle SD card mount/unmount but no success.
I noticed that my phone has some issue with charging point. It started after I used nexus 7 charger into it. On my laptop usb connection works good, but at my office I checked on 2 PCs but USB is not recognizing it. (Sometime works something don't). Another issue I faced a week ago was, when I removed charger, phone still showing charging!! My friend suggested me to mess with port. Use some small sharp stuff like knife to remove touching charging port with outer steel body, and it worked.
So I concluded there must be some issue with it. Today morning After fresh installation of slim rom with suggested step problem persist. But I didn't flashed gapps, just to test if there is an issue with any of the google apps. But then I installed gapps (only required and gmail and hangout)
all of sudden, issue resolved! 2% wake and 98% deep sleep in 7 hours!
Still I cannot determine what exactly caused an issue. If it is about charging point, all I know is I'll face this issue again, and as it is soldered to IC cheep, I definitely need to give it to professional repair.

As I guessed, Issue again comes, this time I see that 'vbus_present' holds kernel wakelock even after unplugged.
USB working fine, but sometime it keep showing charging after unplugged.
Temporary I am keep plugging and unplugging till charging icon disappear. and then reboot the phone (Rebooting is required otherwise lock will not release).
Soon I will have to repair charging point.

Ha haha, Alli need is to do not let charging point touch outer surface
Sent from my Nexus 7 using xda app-developers app

lollipop and wont sleep

The wife's moto g (running stock OTA Lollipop 5.0.2) and it wont sleep
Ive set the timeout settings to 15s , 2 minutes etc but the screen remains on when there is no activity and its draining the battery pretty quickly (obviously)
Ive rebooted numerous times.
Anyone had this and fixed it? My next step is to hard reset if there is no fix in the hope that this works.
Also with the new lollipop lockscreen can you customize it to get rid of the phone and camera icons at the bottom?

Few Sony Xz problems [ need help]

Hello, members!
I updated my sony about month ago to new android version Oreo (Android 8.0) and at first i was happy that Sony made an update, but when i started to work more with this version day to day i found that there are things that i dont like!
First thing with apps and folders
Apps like Facebook and Massenger all the time show @ app that i have notification (number on the app) and when i open it there is not any notification for me! Apps all the time showing me the same number of notifications on app but there is nothing in it.
Started to search it, maybe somewhere it is - but there is nothing! I deleted apps and install it again - but it show me all the time the same!
I am tired with this thing - i know it is small problem but in my day to day work it is seriously.
Second thing - Guys what we can do with high phone temperature ? Phone is overheating sometimes when i using it and i am not playing games! It getting uncomfortable hot!
Third thing - When phone getting low energy (about 30%) it is automaticly turn on battery saver! Of course phone start to go slow. In setting i can turn off battery saver but it still are slow because i am more than sure that battery saver is still on, but in settings it is off! when i plug charger to phone it starts to work Great!
Can we do something with these things?
P.s. I think it is to many problems for Sony mobile - i was using a lot of Sony phones but about now starting to think change Sony to something else...better!

Hi, I have updated to Oreo as well. Not experiencing the overheating issue. I upgraded to this handset from Galaxy S4 i9507 and that one used to get hot. Maybe try disabling some apps after checking what is using the battery. Maybe you have a sneaky app which is using a lot of CPU.
Generally, this version (second version of Oreo) is a bit slower than Nougat, particularly camera operation. I am seriously considering rooting if I can be sure that DRM and camera will be preserved.

Try factory resetting the device, that tends to solve most of the issues after a big update. Also if your Play services version is 11.7.46 make sure to update to 11.9.51 via apkmirror as the former is confirmed to drain battery.

Huberts12 said:
Hello, members!
I updated my sony about month ago to new android version Oreo (Android 8.0) and at first i was happy that Sony made an update, but when i started to work more with this version day to day i found that there are things that i dont like!
First thing with apps and folders
Apps like Facebook and Massenger all the time show @ app that i have notification (number on the app) and when i open it there is not any notification for me! Apps all the time showing me the same number of notifications on app but there is nothing in it.
Started to search it, maybe somewhere it is - but there is nothing! I deleted apps and install it again - but it show me all the time the same!
I am tired with this thing - i know it is small problem but in my day to day work it is seriously.
Second thing - Guys what we can do with high phone temperature ? Phone is overheating sometimes when i using it and i am not playing games! It getting uncomfortable hot!
Third thing - When phone getting low energy (about 30%) it is automaticly turn on battery saver! Of course phone start to go slow. In setting i can turn off battery saver but it still are slow because i am more than sure that battery saver is still on, but in settings it is off! when i plug charger to phone it starts to work Great!
Can we do something with these things?
P.s. I think it is to many problems for Sony mobile - i was using a lot of Sony phones but about now starting to think change Sony to something else...better!
Click to expand...
Click to collapse
1. I don't suffer from this issue perhaps try updating your Xperia home launcher
2. The phone does heat up from time to time , all electronics follow the same principle
Electronics will heat up
3. Stamina mode is actually disabled just as it says on the settings, the reason the phone is slow because there is not enough power to be supplied as the demand for performance increases
When power is low your phone struggles to deliver optimal power to performance ratio
To make sure that the phone able to last throughout the day so that you don't miss any calls ,
Performance is decreased in favor for battery runtime

Alarmclock works while Android is shutdown?

Hello Forum,
why does my alarm clock work while the phone is turned out? What is the name of this function and how can I turn it off?
I think it uses battery, because I charged my old phone (switched off, emergency phone) a week ago and now its empty.
Thanks
Peter

peterfarge said:
Hello Forum,
why does my alarm clock work while the phone is turned out? What is the name of this function and how can I turn it off?
I think it uses battery, because I charged my old phone (switched off, emergency phone) a week ago and now its empty.
Thanks
Peter
Click to expand...
Click to collapse
Hi, what phone do you have ?
I remember this was an issue for certain phones (but that was 6 years ago lol). Your phone must be really old !
And about the battery life when shut down, how long does it last usually?
Now for the upfront solutions:
Delete the alarm you sat up.
And if you have a removable battery on this phone, removing it would have a very good effect on battery life.
Have a good one

Its an Elephone P7000. I want to charge it and use it as a secondary phone. I turn it only on when my main phone has no battery. Last month I bought a new battery for this phone, on the battery is written "production date 2015". The battery last a whole day when the phone is turned on.
I'm really interested what is running the whole time in the background when Android is turned off. Is it some kind of BIOS? Is it the bootloader? Can you give me the name of this "program"?
PS: When my Xiaomi phone if turned of, the alarm does not work.

peterfarge said:
Its an Elephone P7000. I want to charge it and use it as a secondary phone. I turn it only on when my main phone has no battery. Last month I bought a new battery for this phone, on the battery is written "production date 2015". The battery last a whole day when the phone is turned on.
I'm really interested what is running the whole time in the background when Android is turned off. Is it some kind of BIOS? Is it the bootloader? Can you give me the name of this "program"?
PS: When my Xiaomi phone if turned of, the alarm does not work.
Click to expand...
Click to collapse
A battery life thread which may help is:
https://forum.xda-developers.com/showthread.php?t=1179809
PS: I have never heard of an android phone that respects alarms when the phone is off, as android is not running But I always wondered why not, since my previous non-smart phones all did.

This App analyses the energy consumption of Android and the Apps, but that is not my problem. My problem is that the charged phone loses energy while it is turned off.
And secondly I'm really interested what is running in the background while the phone is turned off. Is is a firmeware from Elephone? I removed the original Elephone rom and switched to Cyagenomod and then to Rublix. But original Bootloader and other Elephone stuff my still be there.
I asked in a german Android forum and they said it is the fastboot function. But I think this is only a possibility of Android to boot fast when is is wakened from the watchdog I'm searching. (That the alarm clock starts immediately and not minutes after the targeted wakeup time.)

peterfarge said:
This App analyses the energy consumption of Android and the Apps, but that is not my problem. My problem is that the charged phone loses energy while it is turned off.
And secondly I'm really interested what is running in the background while the phone is turned off. Is is a firmeware from Elephone? I removed the original Elephone rom and switched to Cyagenomod and then to Rublix. But original Bootloader and other Elephone stuff my still be there.
I asked in a german Android forum and they said it is the fastboot function. But I think this is only a possibility of Android to boot fast when is is wakened from the watchdog I'm searching. (That the alarm clock starts immediately and not minutes after the targeted wakeup time.)
Click to expand...
Click to collapse
Yes, when you flash a custom ROM, all you are really changing is the system partition itself and maybe the kernel, everything else from your original firmware is still there: e.g. bootloader, modem, etc, etc..
Fastboot has nothing to do with how quickly the device boots, fastboot is a bootable function/mode used to flash/manage the device using the adb/fastboot software while booted into fastboot mode. Some devices have a feature that allows for fast booting, but that is a different animal than fastboot.
Your device has an internal clock the same as a PC does, that is how a PC keeps correct time even when the system is powered off and still shows the correct time when you boot the system. As for what is causing the battery to die even turned off, that may be a different issue than the power used by the internal clock.
All of my old devices lose charge after sitting in a draw for some time without being used, it isn't really an "issue" or problem, it is just the nature of the beast. Batteries do not store power indefinitely.
You can find out more about lithium-ion instability and the particulars of their construction and how they actually work if you do some google searches on the subject.
Sent from my SM-S767VL using Tapatalk

peterfarge said:
And secondly I'm really interested what is running in the background while the phone is turned off.
Click to expand...
Click to collapse
Are you rooted? running Magisk?

The smartphone is rooted with SuperSU.
This watchdog is more than a Bios clock. It wakes the smartphone at a given time. So the android system configures this background watchdog somehow. Maybe there are more things that it can do?
My Motorola Moto E (LineageOS) starts always with a wrong time. (WhatsApp is complaining about it at the start) So there seems to be no watchdog.

peterfarge said:
I'm really interested what is running the whole time in the background when Android is turned off. Is it some kind of BIOS? Is it the bootloader? Can you give me the name of this "program"?
Click to expand...
Click to collapse
peterfarge said:
The smartphone is rooted with SuperSU.
Click to expand...
Click to collapse
OK, if you are rooted, I would try running a boot-script that logs what is running on your phone every X minutes. If your lucky, the boot-script will log while the phone is "OFF".
something like the following maybe:
Code:
#!/system/bin/sh
top >> /sdcard/runnig_processes.log;
You may need to find a path that is actually mounted in your "OFF" state.
Also, I wouldn't keep this as a permanent thing, simply a test.

I dont think that this works. The uptime shows that the smartphone is running since 6 hours. I think if I put the script somewhere in the android system it wont be executed while android is turned off.
I have done some search. It seems that the P7000 has a Real Time Clock (RTC) in the MT6752 SOC. This chip can be configured to wakeup Android. I can see it at "cat /sys/class/rtc/rtc0/name".
There is also the charging screen despite the phone is turned off. The SOC can do a lot of things when android is not running.

peterfarge said:
I dont think that this works. The uptime shows that the smartphone is running since 6 hours. I think if I put the script somewhere in the android system it wont be executed while android is turned off.
I have done some search. It seems that the P7000 has a Real Time Clock (RTC) in the MT6752 SOC. This chip can be configured to wakeup Android. I can see it at "cat /sys/class/rtc/rtc0/name".
There is also the charging screen despite the phone is turned off. The SOC can do a lot of things when android is not running.
Click to expand...
Click to collapse
It does sound like android is not running on your phone for the phone-off-alarms, since it has a real time clock (I didnt read it, sorry).
As for the charging animation, all my phones have that too, but I think that is only the bootloader and ONLY while charging. ie connected to power, so discharging isn't an issue.
I suggested the above, as waaaay back when I modified my first phone, when I added a bunch of boot scripts that logged heavily, I *think* i was surprised when I noticed once (its back in gingerbread days) that I had logs from the start up of when I turned it off. But that was now many moons ago. It was just an idea, that shouldn't be too hard to test, even though all you have said points to it failing. And now that I think of it, the charging animation on that first phone I had, was actually PNG images (as animation frames) sitting on the android file system path; but again, that was during charging, not completely off.