yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] RMXO:
it's not a bug. An app is probably causing the services to run. There is a wifi sharing thread in this forum with various fixes to try out but here's how I fixed mine. I can't promise it will work for you but its worth a try.

Stupid me installed Kies Air from Samsung Apps & that was the cause of my issue.

I had to go into Settings > Apps > Managed Apps > All > Kies Air and un-installed the latest update. Then I turn off anonymous data via wifi (Settings > Location). I just turned that off to be on the safe side.

I rebooted & wifi sharing/wifi manager are not running anymore.
[Galaxy S II General] bendispo:
Will give this a try...

I'm just getting incredibly frustrated.

Unplugged fully charged about an hour ago. Absolutely no usage. Go to check battery level, already down to 94%. Android OS at 84%.
[Galaxy S II General] bendispo:
How did you uninstall kies air? Everything is grayed out for me under the settings for the kies air page.
[Galaxy S II General] bendispo:
Actually, I don't think my issue is with wireless sharing. My Android OS is out of control though. 50 minutes of every hour runtime, 84% total power usage. About 5-6% battery drain every hour without my using the phone at all. This is ridiculous.

Does anyone have an idea yet of what's going on? It seems like everyone has different hunches but nothing consistent or confirmed. :-/
[Galaxy S II General] linkin85:
after updating to ke7, android OS overtook display by a long shot, it is now over 50%, before updating it was less than 15%.
[Galaxy S II General] bendispo:
Same here. Hope the next firmware release comes quickly and fixes the issue...
[Galaxy S II General] RMXO:
I used Titanium Backup. I changed Kies Air to user app & then un-installed it.

Yeah, my fix is only if you have Wifi sharing/Manager running & installed Kies Air
[Galaxy S II General] dan13l:
That's completely meaningless. This thread seems to have dissolved into a mess of percentages and grumbles about battery life.

In order to accurately gauge how good or bad useage is you need to indicate:

Time on battery (ie when did you unplug it)

Percentage use of display, and android os

Time on stat for display

Display brightness setting

CPU time for android os

Wifi on, or off

rom version

Rooted?

Any apps frozen via root?

Using Samsung stock apps?

Any apps polling regularly?

Background data?

Without that, its all very, very meaningless.
[Galaxy S II General] robrob777:
on the HD2...

I'm just looking the SGS2 threat to check before buying.

In my HTC HD2 using CM7 here is my batt stats.

12%

2d 8H on battery (1230 mah battey)

I have

Display 52%

Phone Idle 11%

Cell Stnby 6%

Mediaserver 5%

Wi-Fi 4%

Android System 3%

No android OS or android core apps listed.

In case you don't know the HD2 it has a 4.3 IN display and a power hungry 1st Gen snap dragon.

I'm using a lot of wifi, mobile data sometimes it is usually off. auto brightness on

rooted, only 2G networks.

Edit background data On/ auto sync on, GPS/network location on and using it at least 5 min per day.

Phone is never turned off.
[Galaxy S II General] BarryH_GEG:
The HD2 is a totally irrelevant comparison. It's an old single-core Windows phone running a shoe-horned in copy of 2.2. The only comparison that's relevant is the Sensation. Even the Atrix and O2X/G2X aren't good comparisons until they're on 2.3. There's some speculation that the funkiness may have to do with 2.3.3 as some of what we're experiencing existed on the Nexus S until it went to 2.3.4.
[Galaxy S II General] robrob777:
HD2 is running CM7 android 2.3.4 GRJ22 at 1.2 GHz (single core but I believe more power hungry than those new 2 core cpus), all hardware works with 0 problems.

I didn't have any battery drain with 2.3.3 , 2.3.2 or 2.3.1.

I'll keep an eye on the tread before buying bc it really sucks to carry an extra battery or the charger.
[Galaxy S II General] bendispo:
Is there any easy way to roll back the firmware without having to root?
[Galaxy S II General] kaotickelly:
You don't need root to roll back.

Follow this:

http://xdaforums.com/showthread.php?t=1075278
[Galaxy S II General] bendispo:
Awesome. Thanks so much! Will try to see if earlier firmware was actually better than what I'm experiencing now.
[Galaxy S II General] kaotickelly:
No one have the exact same problem so go through the forum and apply some problem solving techniques.

To follow up on my post http://xdaforums.com/showpost.php?p=14024422&postcount=863

Here's my KE7 on it's second charge.

Display: 2h 52m

Android OS: 34m

Android system: < 1m

Voice Calls: 38m

Charge left: 31% after 19hours.

I think I still have about 6 hours left on this given my usage.

The flat line in the middle was when I went to sleep, and no I didn't charge it, it somehow went up first, then went slowly down. What I did differently here was I turned OFF auto sync, but left background on. That seems to have stopped the blocks of "Awake" time (and high OS usage) in my previous post. So over 7 hours it only used 3%.

My advice to anyone who are having battery issues:

- Freeze wifi sharing/manager (might have to root, then use Bloat Freeze)

- Freeze other non essential and used apps like hubs, and im and use dedicated apps.

- Stop using auto sync if you don't have to, and just refresh when you open the apps. (Or install a scheduler to turn on sync at 1 hour intervals).

Granted certain things can be fixed by the developers, but while they are working on it, we can do our own bits.

Hope that helps.
[Galaxy S II General] RMXO:
If you see Wifi sharing/Manager running & have installed Kies Air. Just un-install Kies Air lastest update & you shouldn't see it anymore. If you want to go further & remove Kies Air. Use Titanium Backup and change Kies Air into an user app, then un-install it.
[Galaxy S II General] robstunner:
I've noticed my android system usage go up when freezing more than the hubs and wifi sharing.
[Galaxy S II General] svortevik:
For 6h26m without using the phone, wifi and data off my phone used 2% battery, Android Os had 5m56s cpu time.

Turned on wifi for the next 15 minutes, but still not using the phone.

Android OS went up to 20m14s cpu time.

Then I disabled wifi and used only data for the next 45 minutes, still not using the phone.

Android OS went up to 23m43s cpu time.

So wifi is the cause of problem on my phone. I have no ide why, and will test it against another router than dlink 655 today to see if that makes any difference.

I have freezed wifi sharing and bbc player.
[Galaxy S II General] fishton:
That s really weird !

On my side, I left Wifi connected for the whole night. I have lost only few percents (10%) after more than 10 hours.

But as soon as I switch 3G on, my battery starts draining much faster.
[Galaxy S II General] JuWa:
Eldar Murtazin tweets today:

http://twitter.com/#!/eldarmurtazin/status/72930533776175104

http://twitter.com/#!/eldarmurtazin/status/72931713973628928

http://twitter.com/#!/eldarmurtazin/status/72932473750822912
[Galaxy S II General] simonk83:
Finally, some recognition!
[Galaxy S II General] troed:
Just an idea:

Basically most "old" routers transmit in the 2,4GhZ band, "modern" ones in 5 GhZ depending on regs in diff countries.

Lately I was in Colombia and in one hotel I had WiFi on 2,4 AND 5 GhZ, full 5 stripes and very little drain.

In another hotel 2,4GhZ, only 2 stripes, high drain

How does android/SGS II basically connect to WiFi ? Can´t see a switch for different bands in settings (while my VAIO has settings to switch to a certain band or both)

At home with 2,4 GhZ Alcatel router from Telekom Austria I have the most little drain .....................
[Galaxy S II General] robstunner:
That's going to be it!
[Galaxy S II General] NIK516:
thank god now when do we get the update,didn't google say from now on we will all get it same time?
[Galaxy S II General] vro25:
There's something running that's using up your battery - look at that steady Awake time on the far right while the screen is not on.

You must have something running in the background.
[Galaxy S II General] DopyG:
So this is a software problem that can be fixed?

Is it safe to buy the SGS 2 then?
[Galaxy S II General] Arthur Hucksake:
Definately. Just disable WIFI and your good to go. I have packet data off when at home too anyways.
[Galaxy S II General] ASKnASK:
Its not just about Wifi.

70% of my battery drained in like 6 hours today. Android OS took up 25%.

After I got home, I restarted my phone and the CPU time of Android OS stoppped increasing (it was at 2 hours before. Yes! 2 out of almost 8 hours).
[Galaxy S II General] $omator:
same whining about draining 2.3.3 happens on SGS forums ;) funny to read ;d

anyone can link to some

googler

/

samsung

empleyee taking about this issue?
[Galaxy S II General] jezza333:
When Samsung release 2.3.4 for both the SGS 1+2, I'll be flashing immediately. The battery use of this process is nuts :/
[Galaxy S II General] simonk83:
I wonder when this is likely to happen? I'm totally new to Android so have no idea how long it takes Google to roll out updates. I see that the Nexus phones have already received 2.3.4, so (from prior experience), does that suggest that a full release is close? Or not really :)
[Galaxy S II General] svortevik:
I now know what is eating away battery on my S2.

To day I had wifi on connected to a router at a friend of mine. As you can se the battery usage is normal:-)

When I got home I still had wifi on, but now it was connected to D-link Dir-655 and Android OS went nuts eating battery and stealing cpu time.

One little funny detail:

As you can see from the pictures it is taken 31 minutes apart, but in those 31 minutes Android OS went from 11 minutes of cpu time to 49 minutes. A total of 38 minutes in a period of 31 minutes. How is that even possible?

BTW:

Is there any configuration I can do in the Dir-655 to make it work together with my phone without Android OS going nuts?
[Galaxy S II General] viva.fidel:
Realised my battery use was due to the stock email app (not the gmail one), had two exchange activesync (hotmail/live) accounts on push and was creating a constant wake drain

android os still takes a high percent with and without the email sync and wifi on/off but battery usage is much much better with the email app off
[Galaxy S II General] NIK516:
The thing i did was change routers, gave the old one to my brother in law.

The dir 655 was a good router but it did seem to effect the gs2 more then other routers.

But wifi in general seems to effect the gs2, i had my ip4 on wifi bluetooth 3g gps all the time and would looks 1%in 3 hours. going to 1% in 3 hours with none of that turned on is a little disappointing.

But ill hang in there, and wait for the update.
[Galaxy S II General] D4rK.F0rcE:
What do you mean with email app off? Did you just turned off auto sync?
[Galaxy S II General] r_a_c:
That last, almost straight drop is from 50% to 28% with just playing 22 minutes of medievel castle. Isn't that TOO much??? jeezes, that is really fast. Does everyone encounters this with playing games or does everyone have these drops in this short time?

There is also this black space between some medievel castle and other programmes in the battery status oversight. Strange... no?
[Galaxy S II General] Tsapper:
How did you change the battery and clock icons?

At the monet I have about 3% drain in 8 hours when idle. I don't have any syncing on the background and I keep WiFi disabled when not using my NAS. S o battery drain is ok when the phone is idle but battery goes down pretty fast if I do anyting with the phone.

It is like 5 minutes surfing via HSDPA and the battery goes down by 3%! is this really normal? :confused:

At the moment my phone has been on battery for 17 hours and I have 59% left. and Android OS has used 15 minutes and 36 second of CPU time and only 9%. On the other hand Android system is in 21% while it has used just 1 minute and 32 seconds orf cpu time.

I use the wathcdog app to kill certain apps like the default e-mail app and all the hubs.
[Galaxy S II General] gsusx:
has anyone noticed that when wifi is on and connected that a lot of their calls don't come through

im on t-mobile uk and have tested this today in my office, basically with wifi on i cannot receieve calls :S
[Galaxy S II General] janldl:
updates from me

Wifi doesn't seem to affect my battery's performance

what i can't understand is according to watchdog when my phone is screen off and idle i am getting random spike to 30 or 40% cpu for suspend and event/0. while wifi is off

have tried numerous combinations of freezing apps with titanium, but no joy. don't understand why when phone is idle there are these random surges

it seems to be an ongoing thing because with phone idle or light use battery drains about 10percent per hour.

today I've turned off any location tracking which seems to help slightly.

on the subject of games draining battery. angry birds seems ok to me. but playing words with friends my phone gets really hot near the earpiece and drains approx 1% per minute! screen being the main culprit.
[Galaxy S II General] DanCZer:
I have similar problem, but I can't identify the process, which would be abnormal increased. Today, in the mornig (7:40) I disconected telephone from the charger - battery dropped 3 % in 15 minutes. Then I went to office by tube and tram = time by time out of signal. Till the 11:50 was WiFi OFF, I received 3 phonecalls, sent 5 SMS. In less then 5 hours my telephone consumed near to half of the battery before I switched on WiFi.

Twice I found telephone hot in the pocket of my shirt today - all data transfer were switched off that moment. No special process increased... :confused:
[Galaxy S II General] $omator:
one thing is battery - why the % drops after disconect form charger - you can find an 'article' about this in my signature 'yellow section' - read it - thats not an issue thats a feture ;)

other thing phone getting hot and droping percents like crazy while idle

can you download from market cpu spy and post a screen of it after such 'drain' ?

maybe look at os monitor if any app have significant Load all the time wo reason ...
[Galaxy S II General] DanCZer:
Sure. I know about battery drop, after disconnecting from charger. I had wrote it to document all the "process" of discharging. I'm new here, so I have not the skill to writte the posts the way it's ussua l here :).

CPU spy installed - I will wait till next "hot moment" of my SGS2...
[Galaxy S II General] bentez2003:
I had the com.android.vending process kick in at alomost full CPU load. It drained 10% of my battery before I noticed. I restarted but the process was still running, so using seepu I killed it and everything was fine. I googled it but it wasn't too clear, is it something todo with the market??
[Galaxy S II General] $omator:
vending is android market :)
[Galaxy S II General] ignign0kt:
Mine has been staying awake sst my screen turns of and I can't figure out whats causing it
[Galaxy S II General] robstunner:
Freeze Wifi Sharing and Wifi Sharing Manager via Titanium Backup. No Ill effects and that will free up that 19% battery that the application stole from you.
[Galaxy S II General] viva.fidel:
No, i changed the sync schedule to manual (longpress on account name > account settings > sync schedule), it stops it running as a service in the background.

Attached a screenshot of a regular day's usage after email sync is stopped

On my htc, i could dial *#*#4636#*#* and look at battery history including partial wake usage.. is there any way I can get access to this info on the SGS2? Spare parts FCs when I access that option through it.
[Galaxy S II General] jkrestes:
Hi all. I just upgraded from ke2 to ke7,rooted and flashed again with ke7 kernel. Phones started eating battery more than before (android os) so I have done following to get it back to 10%.

1)Delete fast dormancy file as described in this threat

2)Freeze what you can and is save (wifi sharing,social hub,apn, yahoo news etc.)

3)Disable position sharing for google

4)install juice defender ultimate and custom config (can tell u exact config if u want...)

5) Full discharge,full charge and calibration (deleting batt stats)

Combination of those gave me after 15 hours(3 hours playing, some calls, sms, browsing on wifi, 3g, 1.5h watching movie and other quite hard use...definitely no stand by whole day...) still 25% batt left and Android Os 11%.
[Galaxy S II General] svortevik:
What is cpu time for android OS after all the steps you have done?
[Galaxy S II General] dryspuri:
My phone does not have nwk file
[Galaxy S II General] ignign0kt:
I checked my processes after seeing that my device refuses to sleep

the process "system" is like constantly using my CPU

How the hell do I stop this from keeping my phone awake

Edit: This is a recent thing because my phone used to take a second to turn the screen on.. now it's instant
[Galaxy S II General] jkrestes:
32m 5s is cpu time for Android os
[Galaxy S II General] troed:
Still on KE2. After unplugging reading newspapers with screen brightness on 0.

Methinks screen consumption is the biggest prob
[Galaxy S II General] troed:
This is what android booster tells me (btw: newsreading over wifi)
[Galaxy S II General] Tsapper:
Yep.

I have started to wonder that maybe Samsung couldn't produce enough High quality Super AMOLED screens and were forced to use some poorer screens to get enough phones to the market. Now if you were lucky you got a phone with a good quality screen --> screen power consumption is low but if you were unlucky...

For example I have a very good idle consumption maybe 2-3 % in 8 hours, but if I do anything with the phone the battery just drains very very fast. :confused:

I have my screen brightness level set to 20%
[Galaxy S II General] DanCZer:
Has anyone idea, what means colour of the telephone signal in the battery history/battery consumption? I know red - telephone is out of signal, but what does mean yellow? I have this colour all the time, including my office stay, where we have micro cell of the mobile network operator. 3G network is switched off on my mobile phone...

Thanks for hints.
[Galaxy S II General] CandyAndy:
Also have yellow all the time. No matter what.

I remember that once I saw some green and red also. So strange.
[Galaxy S II General] schrickm5:
Screen Filter + Juice Defender

Hello All

Just a few comments on my battery life....

I had KE2 (NEE), and have gone to KE7, rooted also.

On KE2 it was really bad, I was getting around 12-15 hours of normal use.

Updated to KE7 to see if it would make a difference, it did - unfortunately I cannot say how much independantly by just changing firmware, as I put on Juice Defender (free Version - on Agressive setting) and use Screen Filter.

This morning after 1day and 3hrs I had 20%, I sed it for an hour and had 14%.

Two hours later its at 12% so I plugged in the charger, as I want to have some juice before I leave work.

Anyway my useage was:-

Youtube 25m

Downloading & listening to music from Music Hub 30m

Surfing 2hrs

Gmail 30m

I had sync off for about half the time.

Calls for 20m

Gtalk video 2m

Changing Wallpapers/downloading pics (can never decide what to have!) 30m

Wifi was on sleep when screen off

Data is disabled when wifi is on and screen is off (I think)

I havent tried the Fix Fast Dormancy - as it is beyond my capabilities. I am just a humble Finance guy ;)

Hope this info helps someone.
[Galaxy S II General] boer:
One tip -> let's see results but looks good so far.

Hello,

new to Android, previously on Win mobile than 4 year iPhone so excuse me if something well known but didn't find it here.

- If i am guessing correctly some peoples are like me and when new "toy" arrives they are not able to keep it sitting for 3 hours to fully charge before turning on.

- I did same yesterday with GS2 and battery life is +- 9 hours when saving as much as possible. (two charging cycles so far).

Now what's interesting:

- I started to look for battery recalibration and looked if there is some service menu etc.

- Find out most probably well known Volume Down+Home+Sleep hold it and went to Custom ROM loader (BTW surprised that there is only warning about custom ROM but not word about waranty)

- Than i restarted phone from this Flashing menu with holding of power button.

!!! When phone booted i went to battery management and i sow instant drop of battery capacity for approx 30% of capacity !!! to be honnest looks like my missing 4,5 hours of power !!!

My current plan if anyone have other tip:

1, I will now dry battery out completelly (once phone die i will try turn on over and over till nothing ;)

2, Remove battery from phone

3, plug it again fully charge

4, Do not turn on during that time

5, Once fully charged first boot to service menu

6, Restart

7, Will let Phone running some time and again service menu if there will be any other drop

Can anyone with battery problem try to go to that service menu boot again and check if there will be same drop?

!!! Update !!!

So after I started everything - 3G,Wi-fi, GPS, BT, Turn on radio streaming via web, started youtube videos with highest brightnes -> my battery in graph start growing :).

This looks good really good. Samsung/Google looking for nobel price for energy issues :)

Best regards

Ondrej
[Galaxy S II General] Tsapper:
Is it normal that after rooting there is this yellow triangle on the boot up screen
[Galaxy S II General] robertkeenan:
On a similar topic, my SII will drain the battery while using the Sat Nav. My problem is that I have it on the charger all the time while this happens. If I was to go on a journey lasting more than 1hr the battery will be dead when I get there. The charger is working and will charge the phone to 100% if not using Sat Nav. Tried it in the house with the supplied mains charger and the power going to the battery is less than the power coming out.
[Galaxy S II General] RogerPodacter:
i believe:

red - no signal

yellow - moderate signal

green - full signal
[Galaxy S II General] RogerPodacter:
yes because the charger only suppplies 650 mA, and the phone can easily use more than that when running google navigation. i've pulled 850-900 mA on my nexus one using navigation and recorded the current readings as proof. this is old news though, but i guess for SGS2 users its all brand new again;)
[Galaxy S II General] ranwej:
Yellow - 3G

Green - 2G

Red - no data?
[Galaxy S II General] RogerPodacter:
is that true? i see green a lot on my device, bit i've never switched to 2G so i always assumed it was full signal.
[Galaxy S II General] FRLinux:
Updated to KE7 last night. Battery is as usual. Low usage in my case... http://t.co/IktUzZk
[Galaxy S II General] bendispo:
Just getting incredibly frustrated.

I've been following this and other similar threads religiously, and even after pages and pages of posts, it still doesn't seem like there's any general consensus about what the issue is and what can be done to rectify it.

I've tried a lot of the recommendations here (wifi on and off, different firmware versions, trying to shut off wifi sharing, turning off autosync, factory reset, etc.) and nothing has seemed to work. I'm barely getting 12 hours with very moderate use (an hour or two of web browsing, half an hour on the phone, etc.). It seems outrageous that over the past week, Android OS has averaged each day anywhere between 40% to 75% usage. That number is often 3 times as high as the next closest power drain (usually the screen).

I'm coming from an EVO, and I thought the battery life there was bad, but this is ridiculous. And I still can't believe that Samsung hasn't made any kind of official statement or update. I love this phone but... Arghhh!

Here's my usage just for today:

Android OS 3h 6m

Display 1h 57 m

Android System 27m

Voice Calls 30m

I'm at about 20% left... It doesn't even look like I'll be making it to 12 hours today.
[Galaxy S II General] ludow:
This thread is about battery.

Anyway, you have custom kernel installed? It's normal.

If you only root (no custom ROM, kernel) and install stock kernel after rooting, it's not normal. :cool: