yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] beppez82:
So it is for the sync? mmm so using an application like juice defender don't help that much
[Galaxy S II General] BoostedSR20:
After a reboot my Android OS is still 34%. Guess I'll charge to 100% and try this next.
[Galaxy S II General] DocRambone:
Yes, killing apps etc do not help.
[Galaxy S II General] jonrwg:
Mine with background data on and auto sync but my android os 7%. Do you still have those samsung apps?
[Galaxy S II General] DocRambone:
Don not matter, full or a slim rom have same problems.
[Galaxy S II General] RyanZA:
By default, when you link up your gmail account, the phone will download all of your apps which you had before. You get a little sync icon, but no other info that it's happening.

By the sound of it, you're resetting the device a lot, which means you must not be spending much time between resets. The high android system use may just be your apps and settings syncing from your gmail account, which will use a lot of battery for awhile if you have a lot of settings and apps.

Long shot, but have you considered that at all?

Alternatively, could you try use a different gmail account and see if the problem persists? Might be related to settings on your gmail account.
[Galaxy S II General] DocRambone:
Yes, could be an account issue, i have some apps installed according to market that is not installed. I got this bug after few days, and no flashes of new roms.

I will check tomorrow if the bug is gone, for now, no big deal for me without background data.

Edit: one more thing: Wake up lag is gone if i disable background data!,
[Galaxy S II General] RyanZA:
Not confirmed here.

Plugged in, background data enabled: ~0 sec

Plugged in, background data disabled: ~0 sec

NOT Plugged in, background data enabled: ~0.8 sec

NOT Plugged in, background data disabled: ~0.8 sec

EDIT: Test was done by putting phone to sleep with the power button while on the homescreen with many widgets enabled, then waiting ~20 seconds, and then pressing the home button+stopwatch at the same time, and timing until the display went on.
[Galaxy S II General] DocRambone:
For me: instant now after few min sleep. BIG difference, using widgetlocker
[Galaxy S II General] beppez82:
OK using battery widget is see that after freezed all all samsung Apps i got for the 1st time in 1h and half idle a close to 0mA battery consuption lol like when I charged the phone.

Need to test it better tomorrow
[Galaxy S II General] beppez82:
No lag with widget locker?
[Galaxy S II General] slyydrr:
Did you put the right numbers in your post?

Your numbers show that plugged in with background enabled gives you both ~0 sec and ~0.8sec. Same for background disabled. Can you recheck this?
[Galaxy S II General] RyanZA:
Hahah, sorry, my bad! Edited now. It's 0 sec while plugged in regardless of background data, and 0.8 sec when not plugged in.

Seems my 0.8 sec issue is different from DocRambone's delay issue...

DocRambone, if you turn on background sync and then plug your device into the charger, do you still get the delay?
[Galaxy S II General] DocRambone:
Yes, with data enabled i have 2-3 s delay, so there is something that start eating cpu when i enable background data. I make a new install tomorrow with a new google account. Edit, with usb cable or headphone, no delay.
[Galaxy S II General] RyanZA:
OK, so you have

not plugged in, background data enabled : 2-3 sec delay

not plugged in, background data disabled : 0 sec delay (are you sure it's 0 sec, and not ~0.5 sec or something? compare to plugged in speed)

plugged in (or headphone plugged in??), background data enabled : 0 sec

plugged in, background data disabled : 0 sec

I'm going to check the headphone thing now too.

EDIT: Can't confirm the headphone thing - same ~0.8 sec delay with or without headphones plugged in. Only thing that affects the delay for me is plugged in and charging.

EDIT2: And my 0 sec when plugged in is closer to about 0.05 sec or something, but it's close to instant.
[Galaxy S II General] beppez82:
+1 here plugged no delay
[Galaxy S II General] dryspuri:
sorry @ boosted, I am new to the handset, not new for android, but I still don't understand what do u mean by that.
[Galaxy S II General] cmd512:
Yep, your setup (1.5 OC, no led, everything useless frozen) is very similar to mine, as is your usage. My Android OS process uses very little battery, it's 60+% the display.

No battery issues here as well.
[Galaxy S II General] DocRambone:
Could you name the apps you have installed?, may be some app that gives errors.

And what system apps did you froze?.

I want to try exact the same set-up to see if it cures this bug.
[Galaxy S II General] beppez82:
All these roms are non wipe, theres a way to do a full wipe? cos i noticed that after a restore of the settings (under privacy or recovery) i still have the same ringtones or the volume level i left before the format...

maybe deleting folders inside dbdata can help?
[Galaxy S II General] walda:
@Sergeal: I think its not hardware related. So you can buy each device, in this case. its a - if its even is - a software problem. many users doesnt have it - me included. maybe the ones which drains fast have any app or its a samsung app draining battery. the others are only scared about AOS%. But if its not the display, it has to be another process which uses % of the battery.

dont mind, buy it. :)
[Galaxy S II General] JuWa:
I think I have this same issue, tho it hasn't been so rough yet. Maximum of 15% I have seen the process. Now it's like this in 40% battery left:

I'm not so worried yet, but I surely hope this will be fixed soon. But I'm afraid it's not going to happen before the new Android version update Samsung will give us...
[Galaxy S II General] dryspuri:
@ walda, u mean that some handset are having the problem others dont, i have the problem of andoid os using up cpu, do u reckon i should ask for refund/ exchange, i am quite happy with the handset, but i am seeing same problem which many of users here reporting similar to mine.
[Galaxy S II General] dryspuri:
everything useless frozen means what? which ones u have frozen?
[Galaxy S II General] dan13l:
Quick status update:

9 hours on battery. 60% left. Moderate use. Android OS 2 hrs 15 mins. 50% of total battery use according to settings.

1 hr 40 minutes of display accounting for 25% of battery.

This is with pretty much everything that's not stock frozen with titanium backup.

Tbh, if the phone manages greater than 20 hours like this, even with light/moderate use, I'll be happy. Think it can be optimised, but it's not exactly awful.
[Galaxy S II General] BoostedSR20:
Anything with Samsung, account, wifi, kies, software, update, or hub in the title.
[Galaxy S II General] dryspuri:
I will not at all be happy, why android os should be using 2 hrs of cpu?

sorry i did not ask you what is idle time, when screen was off!!
[Galaxy S II General] walda:
NO! i said - i think - its NOT hardware related! its some App/Widget people are useing which drains the battery on their device. when u get another one and use it 1:1 the same will happen.

so some users have the problem, some dont.

but its only my opinion! :)
[Galaxy S II General] dryspuri:
Thank you very much @boosted, i will try that tomorrow, as i am having handset for 3-4 days now, but as i remember, my battery life has gone down after update & after putting sdcard in so i trying with external sd card out & doing factory reset & flashing old firmware form o2 from xda lets see how it goes!!!
[Galaxy S II General] Burko:
Erm, maybe because the android os doesn't run on the tears of baby elephants? It's going to use some battery at least.....

Maybe we should create a list of widgets we are using, along with sync items?

I have no auto sync, and just the calendar and standard power widget.

Burko
[Galaxy S II General] earthdome:
i dont have anything frozen. so far really good.
[Galaxy S II General] BoostedSR20:
Brilliant.....
[Galaxy S II General] dryspuri:
:D:D LOL Burko, I did not mean that, u know, I got android os eating cpu for 2 hours when i was sleeping & phone screen off, i thaught same is with u, that is why i said what i said,
[Galaxy S II General] dryspuri:
can u please post detail screenshot showing battery usage!!
[Galaxy S II General] grey77:
shouldnt it be 200Mhz? (out of default stepping: 200-500-800-1200Mhz)
[Galaxy S II General] earthdome:
here it is
[Galaxy S II General] BoostedSR20:
I'm at 7hrs now, android os time is 24 minutes.
[Galaxy S II General] walda:
lol

i am 13h+ after unplug. 43% left.

but:

aos=34%=1h 23 min 38 s

display=33%=2 h 27 min 52 sec

cant be serious... ?!

edit;

watch the time. 1% cant be 1h+

sent from my SGSII via T*patalk
[Galaxy S II General] beppez82:
Btw did u flashed the CF unsecure root and then the ke2 stock kernel or not?
[Galaxy S II General] jonrwg:
My display is using more % than android os. It seems for me my display is draining my battery. lol..
[Galaxy S II General] walda:
im on ke1 but after cf ke1 kernel, so yes.

sent from my SGSII via T*patalk
[Galaxy S II General] slyydrr:
How much of the time has your screen been on?
[Galaxy S II General] BoostedSR20:
2hrs
[Galaxy S II General] Burko:
Haha, I'm glad you saw the funny side, I was just mucking about. I don't think I have an excessive android os drain, but it is higher when the phone has been sleeping. But if you think about it, that's to be expected as nothing else is being used. The people who are showing an idle loss of >10% per hour are the ones we need to investigate.

Burko
[Galaxy S II General] ccrows:
Has it really been that noticeable for the better?...
[Galaxy S II General] dryspuri:
I think you are right!!

I think I am bit extra cautious as I was hasty to buy lg 2x & got burnt in that deal as it was defective handset, that i had to send it back, i got refund, but i am being cautious about sammy as i had this battery drain, when i charged it one day, & without using it much battery died within 8 hours & i had random reboot on that day, nothing after that, so I just wanted to make sure it is not hardware issue....
[Galaxy S II General] BoostedSR20:
Heck yeah. If you go back to the begining-ish of this thread you will see me whining about 7hr battery life and almost 80% android OS.

Right now I'm at 67% and 8hrs on battery. OS is 14%.
[Galaxy S II General] beppez82:
Can be really helpfully to us in u post a list of the Apps you frozen... cos for me is these the situation i have.. the suspend that start eat juice when I turn off the phone in idle so a solution will be not making it to go in idle.. i think is better than these lol)
[Galaxy S II General] BoostedSR20:
I'll put together the list tonight when I get home from work.
[Galaxy S II General] beppez82:
Got it disabling wifi helped it like on nexus one that got wifi issue triggering the suspend event/0... usinhg 3g put it low in idle
[Galaxy S II General] kaassema:
I just flashed to the new firmware earlier today... (and also rooted it again, afterwards flashing back the original new kernel), And I'm almost certain that it fixed the drain issue! I used to get a fair battery usagegraph for several hours, then suddenly taking a more steep approach towards 0%, meanwhile seeing android-os taking up an ever increasing percentage of the powerconsumption, usually triggered by some general usage (turning wifi/gps on/off, etc).

Since the new firmware: Already for 7 hours pretty intensive usage (wifi, gps, apps), without the batterygraph taking the oh so familiar steep-creep line downwards! Just a steady line to 83% :)

...fingers still crossed...
[Galaxy S II General] dryspuri:
could u please explain, the part of flashing back original new kernel, which firmware u r on, & was u using samsung apps?
[Galaxy S II General] kaassema:
I am on KE2 now... Did this: upgraded to KE2 using KIES, flashed to the insecure KDD with ODIN and rooted, then immediately rebooted, then flashed back to the original KE2 kernel with ODIN.

I use the Social hub, if that's what you mean by samsung apps?
[Galaxy S II General] tameracingdriver:
Well after behaving itself for 2 days since flashing the firmware and doing a factory reset, mine seemed to be starting to show signs of the process creeping up again and the battery starting to drain more quickly. I've not installed anything to my knowledge so I have no idea what could be causing it :confused:
[Galaxy S II General] tameracingdriver:
KE1.........
[Galaxy S II General] Burko:
By the way, wifi sleep policy doesn't seem to work. Turn off manually using widget/wifi settings.

Burko
[Galaxy S II General] dryspuri:
yup u r correct, wifi does not sleep at all? sammy r u listening?

PS: Just add this i was searching for the same issue, seems like nexus s users were having same issue with 2.3.3, google have acknowledged this issue, and said someting being wrong in wifi & 3 G transition, and that they have fixed bug in 2.3.4, i suppose we also have to wait till 2.3.4

http://www.google.com/support/forum/p/Google+Mobile/thread?tid=62b9e23a049f4ef0&hl=en&start=80

this is the url, pls have a look
[Galaxy S II General] DocRambone:
Sammy made a sloppy job ... These bugs should be found pretty easily
[Galaxy S II General] mosd:
has someone tried to contact samsung and ask them about this bug?! I mean they should fix it and let us update the phone!?
[Galaxy S II General] DocRambone:
One more test:

Clean install on the XEKE1 with pit and reformat

Factory reset and install the XWKE2

Nothing installed, pure stock, no log in to accounts etc, nothing changed from 1 st boot

After 5 hours, lost 30 % battery in idle, 80% android os....
[Galaxy S II General] mosd:
thats just ****ing crazy?!?! do samsung know about this?!
[Galaxy S II General] BoostedSR20:
Ok, here is the list of processes I have frozen that I promised earlier:

BBC iPLayer

buddies now

game hub

home screen tips

kies air

kies via wifi

kobo

mini diary

music hub

readers hub

samsung account

samsung apps

social hub 2.0

social hub 7.52

software update

suggests

twlauncher

wifi sharing

wifi sharing manager

yahoo finance

zinio reader

Right now after some much heavier usage I'm at 36% battery, 13hrs. Display is 69% and then Android OS at 13%. OS CPU total is 44min. Screen on time is 4hrs. Wifi is always on, all background data on. Overclocked to 1.5ghz scaling w/ondemand. SetCPU profile setup for 200mhz when screen is off. Running KE2.
[Galaxy S II General] Arthur Hucksake:
After doing a charge to 100%, playing for a short while so it was at 99% I left the phone for hours while I had a nap.

Come back and this is what I see.

Surely phone idle should be alot higher? or Cell standby or something? I've pretty much turned off all updates, notifications etc

The amount of Samsung bloat on this phone is ridiculous and I wouldn't be suprised if that was the culprit.

Really tempted to take this phone back.

Uploaded with ImageShack.us
[Galaxy S II General] SBS_:
Arthur Hucksake: Considering that you haven't lost any battery do you really care (looking at your picture)
[Galaxy S II General] rocketpaul:
Thsts shocking, are you sure that your battery/phone isnt faulty. You seem to have the worst battery life on this thread.
[Galaxy S II General] dryspuri:
wow, incredible, just to update i am also on ke2, nonrooted, stock, have done factory reset, after that only added my google account details havent touched any samsung crap----- battery is still holding strong 74> 66% gives me idea that these processes may be culprit!!
[Galaxy S II General] jjs87:
haha my S2 is goeing crazy now its still loosing 2-3% charge every hour in idle but it also sometimes REcharges itself now, atleast i see my graph sometimes goeing up :D
[Galaxy S II General] airwater9:
That's exactly what people should be doing. At the moment we already have 44 pages of more or less useless circumstantial information which has been repeated over and over.

Get in contact with Samsung or your favourite tech blog and make some noise.

Any of you who had a Samsung Omnia i8910 HD will remember that Anphase started a petition that got Samsung to update the firmware. This is Samsung's flagship phone for 2011 so I think they'll react.

For now you should report this to Samsung so that they release a fix as well as contributing to the investigating here on XDA. It's not like you have to do one or the other but not everyone wants to root phones or feels comfortable dealing with system processes and why should they have to?!
[Galaxy S II General] yrizan:
I found the solution. Its pure stupid but its not samsung, but google settings. Ill let you all know tomorrow as im to drunk atm.
[Galaxy S II General] yrizan:
**** it, here is the solution.

When you set up the phone after reset, do NOT send private data to google and do NOT backup and restore phone settings. After that the battery is uber goood.
[Galaxy S II General] Arthur Hucksake:
That'll keep us all in suspense then. lol

Disabling some of the Google sync settings? One of them?

Nooooooo
[Galaxy S II General] Arthur Hucksake:
Cool.

Could you just disable the option under Privacy instead of a full restore?
[Galaxy S II General] Nuhvok:
I really hope someone is going to confirm this!
[Galaxy S II General] yrizan:
Try a full reset first. If thats the solution. Lets find out to disable this without a reset.
[Galaxy S II General] Arthur Hucksake:
I've basically told Google they cannot do anything. Got sync for contacts, mail etc turned on tho.

See what happens.
[Galaxy S II General] slyydrr:
If this were the case, wouldn't this bug be existent on all 2.3.3 phones, barring the possibility that Samsung is piggybacking on one of these options?

I'm not saying that this isn't possibly a solution, but the question is worth being asked.
[Galaxy S II General] yrizan:
Im sure ppl are not ansewring the same on every question. Thats the reason for rsndom error.
[Galaxy S II General] Arthur Hucksake:
Think we have a winner.

Setting up my phone again, reinstalling apps, facebook etc Android OS is towards the bottom of usage now.

Android System 17%, Cell standby 10% and Android OS is a lowly 5%. Market is 4% and I was on there ages downloading apps.
[Galaxy S II General] slyydrr:
See how it looks over a little time, as the bug seems to show up when the screen is off.
[Galaxy S II General] ignign0kt:
Where is that option?

Is it on the phone?

Or is it in odin when you reflash

Must be someway to disable it on there phone. Is it the backup data to google servers option in privacy?
[Galaxy S II General] Arthur Hucksake:
Lost 13% battery while downloading, installing, customising the phone with the phone screen on the whole time, for an hour.

Can't fault that. Phone is sat idle now, lets see what happens.
[Galaxy S II General] BoostedSR20:
After a full day of use (based on what I did today) I would have to guess I would end up with about 20-22hrs of battery time.
[Galaxy S II General] slyydrr:
Sorry, I meant the bug seems to show up when the screen is off - my bad for poor wording! :)
[Galaxy S II General] DocRambone:
A pure XWKE2 install:
[Galaxy S II General] sohanlon07:
Ive been using mine moderately now for fifteen or so hours and still have 31% battery left. Thats probably good I think.
[Galaxy S II General] airwater9:
Well if you're drunk then this sounds really promising :-P
[Galaxy S II General] Mr.Kakarot:
I just plugged in my phone, at 1 day and 3 hours.... not light use, but nothing special, angry birds, internet, zynga, calls, facebook, xda, email, sms etc.... I charge every other day, overall... i am impressed with the device, but the only thing I can agree on... is the android % is always high?

but again, this is the best lasting android device I have had! I have not uninstalled anything, or disabled anything... just good old fashion use.
[Galaxy S II General] simonk83:
I've had Watchdog alert me to Suspend and Events/0 hogging CPU about 10 times so far today. Booo.
[Galaxy S II General] ronj1986:
I obtained this result by killing running apps with the in-built task manger & disabling data. Now that I have data back on, have browsed the web, facebook, and text a few times look @ my results
[Galaxy S II General] dan13l:
Left my phone overnight as an experiment. Battery dropped 4% in 6-6.5 hours. Android OS CPU time went up by half an hour in that time (total time 5 hours 3 minutes). I'd consider that to be pretty normal, so maybe the android os thing is a red herring.

Currently on 22 hours 10 minutes with 10% left.
[Galaxy S II General] dryspuri:
wow, that is pretty impressive!! which firmware you are on, that makes me wonder should i ask for exchange!!!:confused:

@ boosted: i tried to replicate your settings, except setcpu, my battery is not as good, it lost 30% over last 5 hrs when i have been sleeping, something is definitely wrong? i think setcpu is doing the trick for you!!
[Galaxy S II General] earthdome:
yes. There must be something that trigger a bug which causes the display to be active (eventhough it's off) when idling. I lost 15% per hour due to that.
[Galaxy S II General] Burko:
Have you all manually turned wifi off. The sleep policy settings don't work.

The below snaps show that on idle without wifi on there is next to zero battery drain. It was still showing as 100%

Burko
[Galaxy S II General] Miracle1980:
Im not expert but let's see if this could be related. I went to sleep yesterday with the phone at 80% of battery. I left aereo mode and everything was off (wi-fi,data,bluethoot...). This morning i had the phone shutted off (first problem). I switched on and the battery was at 36%!!!

What is this? It's this problem?
[Galaxy S II General] ssarl:
I disabled yesterday Google Latitude (sign off) and now I have 1% drop every hour with push exchange, gmail, gtalk. Give it a shot.
[Galaxy S II General] tankcmy:
I have the same problem too. 15% battery loss after 8 hours without doing anything (but I have automatic updates set at every hour for email, twitter.) android os is 30%, but I find it ridiculous that I can loose 15% of battery by not doing anything.
[Galaxy S II General] crypticc:
10 characters
[Galaxy S II General] crypticc:
Ok had a magic with same issue on 2.6... Kernel. cause had been identified and patched, originally by farmatito and then ezterry; was found to be adb service and debugging mode and linux had patches to fix. . Anyone try turning off adb debugging and fresh boot not plugged into usb? Anyone check if those patches are in SGSII kernels?

Also it is well known to not flash kernels on anything less than 100% : screws up battery calibration otherwise

Sent from my GT-I9100
[Galaxy S II General] FPRobber:
Did you leave WiFi on?
[Galaxy S II General] dryspuri:
hmmmm, how do u recalibrate battery
[Galaxy S II General] tankcmy:
nope I don't use wifi at all
[Galaxy S II General] tankcmy:
I have the Battery Indicator App and Lookout Mobile Security. Could any of these be the cause of the problem?
[Galaxy S II General] ronj1986:
I'm still going like the Energizer bunny:-)
[Galaxy S II General] DocRambone:
The cell standby shows : time without a signal : 100 %

What does your status say and do you have high android os drain?
[Galaxy S II General] DocRambone:
Could be, i try to wipe both sd cards.
[Galaxy S II General] earthdome:
weird

10 char
[Galaxy S II General] AndyCr15:
Wow, I think that's pretty great battery life!

Personally I think you're just being unrealistic. If I left my pc on for 8 hours, I would be expecting it to still be using power...
[Galaxy S II General] Shocky2:
Android OS usage is higher than Display here ater updating firmware. :(
[Galaxy S II General] LarcusMywood:
I'm lucky if I can get 9 hours of battery on idle, something is seriously wrong with mine, but Android OS is lower than most people have here.

I really don't get why mine is so bad, I'd be over the moon if I had 24hours which some of you guys claim is awful. :(
[Galaxy S II General] ignign0kt:
Mine too..ugh. I thought it would have helped
[Galaxy S II General] chukkie:
which firmware are you on?
[Galaxy S II General] jjs87:
no its not normal. I had android phones before and they didnt use 2-3% in idle thats just not normal behavior mind you thats 96% per 48 hours! You should be able to get 2 days of use out of your phone with moderate use not by just leaving it in idle.