yashsingh1/xdaforums huggingface dataset:
[Nexus S General] gogol:
@poid,

Here what I have done:

At battery level 3%, I turned off wifi, enabled gps, enabled dev option usb debugging.

Reboot ...

Connected to charger ...

Let see tomorrow morning, I am about to sleep :)

At least, this is different compared to my prev situation where wifi always on, even at the office.

Now, it is using mobile data, 3g, with pretty good signal.

However, all others are off: bluetooth off, nfc off, wifi direct off, tether off, SYNC off, sound silent, brightness fixed at 10%, facebook sync off, google plus sync off, gtalk off,mlocation services off except gps.

Let see if it will make any difference.
[Nexus S General] il_pasqui:
after ICS upgrade:

Battery Percentage - 69%

Android OS - 42% (insane !)
[Nexus S General] stejc:
Battery Usage : 12%

Android OS Usage : 30%

(Screen 19, wifi 10)
[Nexus S General] drSTRIFE:
Have been running ICS 4 OTA for about 4 hours now.

This is my battery usage with brightness set to auto.

Screen = 28%

Android OS = 16%
[Nexus S General] desertflyer:
This is not good. 5 hours on battery, I'm at 35% with Android OS using 71%. I hope there is a fix soon.
[Nexus S General] rguz:
9h 21 mins on battery, left Wifi on overnight because I was downloading something and I slept on it.

Mobile standby - 86%

Android OS - 4%
[Nexus S General] poid:
Thank god someone else has normal usage!

hmmm so it might not be wifi thats the issue then.

rguz, did you just update over gingerbread or install fresh?
[Nexus S General] rguz:
I came from eugene373's Custom ICS so I had to do a full wipe, flashed the OTA 2.3.6. Then I flashed the OTA 4.0.3 from there.
[Nexus S General] gogol:
This does not make any difference.

The Android OS is still high and increasing all the time ....

Back to square one ....
[Nexus S General] poid:
balls

Is there any way to get a detailed breakdown of what processes/functions Android OS is actually using?
[Nexus S General] onthecouchagain:
Not sure what is considered "normal" yet, but here are my results after a day of my typical use. I unplugged around 8 AM, and this was taken at around 12:30 AM later that night.

Additional details: Basically my alarm goes off, snooze once or so. I browse the web a bit on my train ride (about 40 mins) to work, also chat via Kik messenger, and the occasional game. By the time I get into the office, it's usually anywhere from 80-85% batt life (after about 96% from unplugging). Then I only use it once in a while throughout my work day, to check emails and messages. By the time I'm out of work, it's anywhere near 50-60%. Then similar usage on the way home, and maybe a brief call or two, and a lot of messaging. I'd say this is moderate use?
[Nexus S General] praveenmarkandu:
Your life sounds freakishly similar to mine
[Nexus S General] onthecouchagain:
Want even more irony? I was born in Malaysia (JB).
[Nexus S General] gogol:
We tried that in the Galaxy Nexus General forum:

http://xdaforums.com/showthread.php?t=1387243

And the result were mixed. At one point, mine showed vbus-tuna_otg (as part of USB on the go, which I have no idea why shown up and we all know USB on the go does not work at 4.0.1), "mipi_link" also took big part on most if not all, PowerManager was obvious, etc.

We cannot draw any conclusion.

Now ...........

Ok, one of other difference with yours and user rugz that both of you did not use your phone, and showing high percentage of "cell standby" (rugz wrote mobile standby), also low screen battery usage.

Probably this is?

So, I would suggest you to start really using your phone :) And see if you will get high Android OS Keep awake time (play games, check emails, write emails, call someone, text someone, make photos, make videos, etc.).

While I will try to NOT use my phone until the power run down again to 3% ... This could easily take almost 2 days though.

But worth to try and see ...
[Nexus S General] poid:
In terms of usage, there is 2 hours of music through BT audio, 40mins of screen on time, 20mins of calls and in the background G+ syncing my photos to the cloud. I would have thought thats pretty typical usage if it was squeezed into a day, just that mine is spread over 2 days.

I doubt thats the cause, but i can try and use it for longer. I'll play games to/from work and use the BT audio for longer during the day.
[Nexus S General] praveenmarkandu:
Just so I'm clear. Is a factory reset a confirmed method to clear battery stats? Is there any other ways to clear battery stats?
[Nexus S General] grizz46:
You can clear battery stats in CWM recovery if i'm not wrong.
[Nexus S General] amir80:
My phone is dead after 5-6 hour (3g no wifi).

The Android OS is 40-50%
[Nexus S General] praveenmarkandu:
Im not rooted and my bootloader is still locked.
[Nexus S General] gogol:
Hi poid,

I meant, using it as to increase the screen time.

On all my tests, my screen time is about 4 up to 5 hours (yes, no typo here).

Yes, I used it a lot:

- XDA premium app to read this forums :)

- Stock web browser many times a day

- Official Facebook app

- Google+ app

- And clicking here and there on the home screen like mad!

That will make difference on your usage pattern, as you don't use the screen much.
[Nexus S General] dustookk:
Battery level: 35%（just 3 hours..）

Android OS: 26%
[Nexus S General] gentk:
Battery Level: 30%

Android OS: 39%

Sidenote: Exchange Services is also using WAY MORE than on 2.3.6, it shows it as 25% right now, while the screen is at 21%. :S

Really bad experience till now, hope something is done about it.
[Nexus S General] mELIANTE:
Ok, so my Android OS's percentage is also way high in battery stats and when I pressed the item the details show-me this:

Under the percentage bar states that it is battery used by Bluetooth, but I don't even have it on:confused:

Also, it's keeping the phone awake a lot, been off charger for about 2:30 hours and it was kept awake for 20 minutes just by that process...:(
[Nexus S General] amir80:
Battery: 24% after just 4 hours

Android OS: 62%

Only 3g, almost not in use

Do you think that one of my apps are the cause for this issue?

---------- Post added at 02:53 PM ---------- Previous post was at 02:29 PM ----------

I now remember that I had this problem when I first got my Nexus S. The sync option of the Facebook app killed my phone (but I saw that in the battery use graph)

I started to remove apps that run on the background to see if one of them is the fault. It should be something popular that we all use like the Facebook apps.
[Nexus S General] 3ernd:
I saw that the Market cause a lot of background data (35 of 55 MB total) when connected to wlan.
[Nexus S General] Symos:
My stats (with very minimal use):

Battery level: 70% after 6 hours

Android OS: 43%

One thing I noticed though is that the problem (almost completely) goes away when I turn wi-fi ON!

Look at the following screenshot, as soon as I turned wi-fi on, battery drain returns to normal!

Has anyone else noticed this?

//Hmm..I can't seem to attach the image as I get an internal server error, but take my word for it
[Nexus S General] Lordofminor:
Battery: 28% and goes quickly down right now

Android OS: 26%

Nexus was fully charged by night, used bit WiFi and stock browser, games for like 10 minutes.. Mostly idle.. Only 2G

Pretty laggy and not so smooth after few hours of using (I guess stock browser is the problem here)

http://imgur.com/a/wGFMj
[Nexus S General] khtaam:
I tried to disable most features and noticed that auto-rotate screen uses a lot of cpu. Load average goes down a lot after disabling auto-rotate.

Android OS still uses a lot of battery.

5h 33m on battery

73% battery

Android OS 40 %

Screen 28%

Android OS

CPU total 2m 13s

Keep awake 1h 54m

Screen Time On 50m 17s

It possible to test this pretty fast by enabling "Show CPU usage" in "Developer options" and check the load averages drop. Mine when from >2 to <0.3 in 20 min idle on my desk, wifi on, sync on but auto-rotate off.
[Nexus S General] Aequilibrium:
4h 13m battery

75% battery

SO Android 20%

screen 21%
[Nexus S General] Stefanauss:
Wifi and 3g on all the time, syncing with Gmail, Google +, Twitter, Facebook, Foursquare, auto brightness.

Perfectly fine to say the least. You can tell from CPUspy that an high percentage for Android OS seems due to the new framework ICS brings.
[Nexus S General] Symos:
@Stefanauss:

As I said in my previous post when I turned wifi on, the problem went away for me as well. So it could be that you have wifi on all the time that causes you to see such good behaviour.

Can anybody else confirm if the problem is fixed when you turn wifi on? (preferably tested in a place with good wifi signal, otherwise we'll not draw any safe conclusions)
[Nexus S General] coolmaster121:
Battery got much better as I kept using the phone. I am at 7% now.

Kids played a bunch of games and I texted a bit. And then phone sat unplugged overnight.

Pretty good.
[Nexus S General] nauvho:
Ok guys, i think i find the problem. I turned off the Google Location services (all three of them) and Android OS from 34% went down to 12% and battery is much better, for 4 hours and 1,30 hours talking it went down only with 5%.
[Nexus S General] teuntje3:
How you turn that off?

And how you can set wifi in a mode, when screen turns off, wifi turn off all so?
[Nexus S General] nauvho:
Go to system settings - location services and uncheck all 3 marks. Ofc if you need the gps on you can leave it.
[Nexus S General] praveenmarkandu:
it totally baffles me that you guys are able to get so much out of the battery. I use to reach around 14-16 hours on GB. now I reach around 10-12 hours on ICS. I would say my phone usage is moderate.

Im just gonna leave my phone unplugged tonight and see how much of charge it holds in the morning after not playing with it
[Nexus S General] civicdrivr:
Hmmm, Android OS usage rose for me today since I took it off the charger. Its up to 29% and at the top of the list. For the past few days it was ~20% :confused:
[Nexus S General] pmpollet:
I encounter the same issue since the update.

I tried the tricks given in this thread:

Disable screen auto-rotate

Disable location services

Activate wifi

But nothing worked out for me yet :(

Whatever I do, use the phone or not, it seems to consume as much as energy. It drops by 10% each hour approximately.
[Nexus S General] poid:
yeah i got that :p

I've done a heavy usage 'test" this morning and at the moment i have screen 51%, mediaserver 16%, Android OS 12%

So it increased with heavy screen-on usage but still nothing like what you guys are seeing.

EDIT: the key thing to note is that Android OS is not keeping my phone awake during idle, which seems to be the problem for those with high battery drain.
[Nexus S General] zeiroe:
Battery level 6%

Android OS 22%
[Nexus S General] :
I disabled Location services and my battery is slowly getting better. Android OS is still high... Have to test some more.
[Nexus S General] fredjm31:
Battery level: 30%

Android OS: 80%

Battery level was 97% 3h40 ago.
[Nexus S General] SamuelDebruyn:
Battery level: 12%

Android OS: 32%

It kept the phone awake all the time.

it's more than the screen
[Nexus S General] Symos:
Here's the screenshot I couldn't attach before. You can see that in the first 3-4 hours (no wifi) battery drain was almost 25%. In the next 12 hours (with wifi) battery drain was 10%!

The "keep wifi on during sleep" setting is set to always, so the phone does NOT revert back to 3G when in sleep mode.

User pmpollet above says that keeping the wifi on didn't help him so I don't know what to think, but it makes a huge difference for me as you can see.
[Nexus S General] praveenmarkandu:
http://phandroid.com/2011/12/20/goo...e-due-to-high-cpu-usage-and-battery-life-bug/
[Nexus S General] tdtylert:
can someone tell me what media server is? Today that's at the top and screen second and android is third
[Nexus S General] amdpox:
Even though the Android OS usage is quite high, my battery life seems pretty good - 18 hours of light use with wifi and sync on, and it's only gone from 92% to 65%.

My wifi is set to sleep when not plugged in, but looks like it only turned off after many hours of inactivity. 1h24m of screen time, 2h33m of Android OS keepawake.
[Nexus S General] praveenmarkandu:
media server is the process responsible for music and video. you must have used it.
[Nexus S General] j1po:
My Nexus S idle on that time period, I didn't using it,only first hour then I left it on my desk :D

So, about the ICS battery drain issue, what the conclusion here ?

I never use Gingerbread on NS, after I bought it, I upgrade to official 4.0.3, so I don't know the comparison on battery draining..

thanks
[Nexus S General] tomasi02:
same issue here.

i see two issues

- high cpu usage of OS android and Android system (install OS monitor)

- unable to go to the deep sleep

see attachment

Nexus S I9023
[Nexus S General] Petarsson:
i also have problems with battery drain, but actually its not a problem with android os, but with android system? it keeps my ns active nearly all the time (~17,5 hrs without loading, more than 17 hours kept active, just minutes idle), any ideas why?
[Nexus S General] khtaam:
I still think its the auto-rotate thing, and that the awake time of Android OS is just calculated or reported incorrectly.

Install OS monitor and watch cpu usage with auto-rotate on, disable auto-rotate and check cpu usage in os monitor again

for me total cpu usage

on ~20%

off ~7%

Os monitor using ~5%
[Nexus S General] tomasi02:
hmmm... you are right...CPU usage is now OK on nexus s.
[Nexus S General] khtaam:
Submitted an issue, 23346 on code.google.com/p/android/issues/list
[Nexus S General] gogol:
Same USB on the go feature, one reported it is using quite high CPU. Like constantly checking or so.

We definitely need an option to TURN OFF USB On The Go if not needed.
[Nexus S General] aic719:
Battery level: 58%

Android OS: 18%

Sent from my ice creamed Nexus S sandwich
[Nexus S General] zonesan:
Battery level: 84%

Android OS: 32%
[Nexus S General] b1337:
android os is high but fine by me ;)
[Nexus S General] marcelnn:
Wait... What?

How did you get that battery life? Only stand-by?
[Nexus S General] ali_asgar:
Battery level: 90%

Android OS: 26%
[Nexus S General] Mobil3:
Today I am getting a wonderful battery duration on ICS for the first time: 7h:30 and I'm now at 65% of battery, connected on 3G network, wifi is off. A lot of phone calls today >1h:30.

Android system is at 8% - compared to the near 30% since the ICS update.

The only 'little' difference is that today my internet connection is broken - i don't know the reason.
[Nexus S General] b1337:
wifi, 3g on most the day, screen on for an hour, listened to music at work, couple calls and about 100 texts or so far, ics loves me :) but really just moderate usage
[Nexus S General] okishead:
Battery level: 7%

Android OS ICS 4.0.3

Usage: 3g, WiFi on all day

3300mah Mugen battery. They have a new one 3900mah
[Nexus S General] grifforama:
No way in hell that's right. Do you have an extended battery ?
[Nexus S General] ThomasDK:
I'm not 100% sure about this, but try disabling Photo and Browser Syncronization in Settings under your google account. Since I did this, battery life has returned to normal on my phone.
[Nexus S General] desertflyer:
So the first 24 hours after I got the OTA to 4.0.3 I had terrible battery life, seen here:

I used my phone very similarly yesterday here was my battery life:

I'm not sure what happened, but I'm glad it has seemed to resolve itself (for now).
[Nexus S General] undeniablynerdy:
Battery level: 55%

Android OS: 33%
[Nexus S General] m.sabra:
The results are updated again,and they have stilled the same when you consume 10% of your battery android os use 3% of them.

Thanks for everyone contributing in this thread,and does anyone know how we can send or show these results to Google as it could help them by giving them an idea on the android os consumption on various battery levels,since they have pulled the update and they are working on a fix now.

(i have the whole data used in the statistic in a Microsoft Excel document)
[Nexus S General] MersauX:
I'm rather satisfied with the battery usage, I use the phone moderately, phone calls, sms, emails, browsing (wifi and mobile data), games, but it's been over a day since I charged it.

Although the Android OS usage is high it's not consuming my battery when the phone is locked, I lost 3 or 4% while I was sleeping last night, so not shabby at all. I have auto sync on, auto rotate off, gpu rendering off (doesn't work well with QuickPic).

P. S. I don't have enough posts to link to outside image hosts, so I had to attach the image.

EDIT: It's been a few hours more than the screenshot shows, because I rebooted the phone yesterday.
[Nexus S General] marcelnn:
Well, if you're not using an extended batter then I think I should flash again. Are you using 4.0.3 stock or one of the custom ROMs?
[Nexus S General] smanfly:
Battery 38%

Android os 18%

Display 46%

I can't take screenshots. Can u help here?
[Nexus S General] ThomasDK:
Maybe here: http://code.google.com/p/android/issues/list ?
[Nexus S General] fredjm31:
"Receive SIP calls" has checked itself during ICS upgrade.

Unchecking it gives (finally) good battery performance : after 6h30 :

Battery remaining : 85%

Android Platform : 21%

Android System : 11%

I'm (now) happy.
[Nexus S General] amdpox:
Disabled autorotate, android OS still at 40% after 20 mins off power.
[Nexus S General] bjlefebvre:
Battery life: 53%.

Android OS : 20%.

Had ICS on here for two days now and battery life is greatly improved from the day before.
[Nexus S General] khtaam:
I know, its not a complete solution, but cpu time for android os should be reduced. People have posted stats where cpu time is about a third of the keep awake time. with disabled auto-rotate cpu-time is about 1 minute for every hour awake time.

And according to cpu spy it goes to deep idle alot more with auto-rotate off. I don't think auto-rotate should not use all the cpu it does. But its seems not to be the main problem, there must be something other than the cpu causing the awake time and using all the power.
[Nexus S General] evil_fish:
I got very good battery life.

I have my NS a better battery life with ICS than with GB. Both are on stock. Running 8hours, screen on for 3h 48min there are still 44% battery left. ;)

I keep 3G, wifi, GPS, auto rotation, sync on. And I have one Gmail account, one Hotmail push account, one g+ account and one twitter account at the same time. I made some phone calls. And browsing with XDA and chrome for a bit(about 3 hours) mostly on Wi-Fi. Oh, I kept NFC off all the time.
[Nexus S General] mick5au:
Battery Level: 62% (13h 50m)

Android OS: 19%

This is after installing ICS four days ago and recharging 3 times.

i9023 - Australian model. One week old.
[Nexus S General] nauvho:
I managed good battery levels with the following disabled:

1. Google Location Services - disabled.

2. Display Auto-rotate - disabled.

3. Google maps - disabled.

4. Live Wallpapers - all of them - disabled.

My Wi-Fi is always on.

Display brightness at 30%
[Nexus S General] BullHorn7:
The battery doesn't last me a day at work with less than 15 minutes talking and less than 3 hours with screen on. :(
[Nexus S General] a3Dman:
Here's my battery usage:

- WIFI on almost all the time.

- No forced GPU acceleration.

- Data is disabled.

- Auto brightness.

- NFC always off.

I'm not sure if this is a good battery life, since my phone is new and I didn't use GB at all.

At least it's better than my S II with stock battery :)
[Nexus S General] amer19:
Battery level: 68%

Android OS: 28%

true the screen now have lower consumption but I've noticed the MAX brightness is less now comparing to GB

Did any one notice that ??

i mean maybe it's feels so because of the dark UI
[Nexus S General] pmpollet:
After you post this, I did give another try to this trick and it happened that with the wifi setting on "always on" it gives much more autonomy than without wifi.

I try to disable wifi after some time and the power consumption goes up. I still encounter more power consumption than before but I'm now able to almost make a day with wifi.

The problem is, I'm rarely able to connect to a wifi AP on a daily basis (except home almost) :(
[Nexus S General] FlameBoy02:
Battery level: 26% (uptime - 23h 31m)

Android OS: 24%

Stock ROM, GPS and Wi-Fi switched off, Network Location Service stopped, no live wallpaper
[Nexus S General] rodem77:
Battery level: 84%

Android OS: 15%

I've a stable situation after ICS upgrade (from day 1).
[Nexus S General] Stefanauss:
What do you mean by "disabled" for such things as Google Maps and Live Wallpapers?

Uninstalling them? or what else?
[Nexus S General] amdpox:
You can disable built-in apps like Google Maps in settings->apps->all.
[Nexus S General] MersauX:
The standby performance isn't bad, my phone has been off the charger for 7 and a half hours and I lost only 5% of battery during that time, however, I didn't really use it much, just briefly checked my emails and that's about it.
[Nexus S General] mtbgus:
I disabled some apps the other day in this way. The next day Google maps and earth +Google videos all decided to enable themselves again.
[Nexus S General] zhumingvictor:
Battery level: 65%

Mediaserver: 21%

Android System:17%

Screen: 16%

Android OS: 13%

Strange to me is that Mediaserver always on top.:confused:
[Nexus S General] pastikk:
I have not encountered the problem of excessive consumption of battery. I used the application "Battery Calibration" and I used my phone for a day and a half before recharge it (with ICS 4.0.3, NexusBeam mod)
[Nexus S General] kalinusa:
Battery Power Consumption App

Hey guys speaking of battery

What is the best "POWER CONSUMPTION/BATTERY MONITOR/APPLICATION USAGE" app out there???

I am not talking about a stupid power widget, I want a battery monitor app as good as the MIUI BUILT IN one. That one was awesome. It shows detailed each app when it was active, how many times etc etc. Kind of like the built-in ICS battery monitor but more detailed. I want to know when different apps are ON with a graphical representation like the MIUI.

For example I kept *****ing about battery life on the Nexus S too but once I had the battery monitor from the MIUI I discovered how much battery drain happens from the stupid apps like the Beautiful Widget or the other Fancy weather stuff. I mean I love them but they constantly drain the battery no matter how I set it up. For example I put "No notifications, update once every 3 hours" and then with the MIUI monitor you simply realize that those apps are active more than every 3hours.

So, what is the best battery monitor/app power consumption??? Preferable with graphical representation when they are on.

(I do have the SystemPanel App, anything else)
[Nexus S General] amir80:
Does the battery problem also happen with the custom ROMs?
[Nexus S General] snoopy1e11:
Yea
[Nexus S General] MFire:
My battery life. :D

Stock OTA IC upgrade, 3G disabled, live wallpaper on, lots of music, on-line gaming (Jelly Wars addict :D) , auto-rotation on.
[Nexus S General] praveenmarkandu:
My battery problems have been somewhat subdued.

Battery: 49% (9h 38m)

Android OS: 28%

Screen: 27% (Screen on 1h 48m)

What I did the day before.

Drain my battery to 0% (until the phone dies. I know this is bad for lithium ions but I thought this would help) before a full charge

Switched to 2G. Was on 3G before

Switched Auto-Rotate off

I'm gonna switch Auto-Rotate on, and the later switch 3G on to find out the cause. Im guessing it's 3G
[Nexus S General] mELIANTE:
These are my battery stats. On gingerbread I might still have more than 50% but I'm still hoping it will get better. Almost one hour of phone calls, that's why it is up there.

3G on all the time, some sms, very light web/wifi.
[Nexus S General] evcz:
tried disabling:

auto rotation

google backup

google/wifi/gps positioning

setting security lock as "immediate"...

not solved... android OS keeps abusing wakelocks :(