Battery use; Android OS / Android System

[francismi]

Hi,

I have a big problem with my nexus one phone. The battery life of my phone is very bad (only 12 hours, with NO (app) USE! (only text messaging!))
I think the problem is that when I check "Battery Use", the "Android OS" is getting 70% (and more, up to 93%!) of my battery use...
What can I do? I've seen other topics with this problem, but there always is a special app that's the problem. I've reseted my phone several times, so no new apps installed, and I still have the problem...

But sometimes, "Android OS" isn't running in the Battery Use, only the "Android System"... But once Android OS has started, it climbs up to 70-80-90%...

Thanks!

 

[Deleted User]

Are you running your N1 stock or do you have a custom ROM?

 

[shttw]

Weird, mine is always the screen which hits around 75% (making photons is expensive) OS seems to use about 3% (which is slightly less than the live wallpaper).

 

[macprv]

theres definitely something wrong... screen should always be the highest... android os and systems should always be low... check this link for a possible solution: battery life is short because "Android OS" is 80% of the usage - Android Help

 

[francismi]

The weird thing is that I've done already 2 resets, and the problem stays, so with no new apps installed...
I have the normal 2.2.1 version.

 

[macprv]

The weird thing is that I've done already 2 resets, and the problem stays, so with no new apps installed...
I have the normal 2.2.1 version.

did u do it the way he mentions? or just the factory reset from the menu's settings?

 

[francismi]

I've did it the way mentioned, power+vol down+home, and again; the problem stays...

 

[Rusty]

Thing is, it's a %age of use, so if you are doing nothing with the phone, then the OS (which is always running, of course) will always have a high number.

Anyways, onto the more advanced stuff, dial *#*#4636#*#* and goto Battery history.

Have a look at the 'Running' % figure. It shouldn't be all that high (mine is currently at 12% for instance), if it is high, change the top drop down box from 'Other usage' to 'Partial wake usage' and see what's stopping the phone from sleeping.

Ps. The default setting in there is 'since last unplugged' so if it's just come off charge/usb you might want to pick one of the other options.

 

[locus]

Do the *#*#4636#*#* go into phone information scrol down to Set preferred Network type and select GSM Auto (PRL). It improved my battery

 

[francismi]

The only special thing I can see is that in the CPU usage "init" is very very much more than others...
But what is "init"?