So my battery hardly lasts 8 hours under moderate use. I always kill my apps after I use them so this seems kinda weird. I check my battery usage in settings and it shows as follows:
Display - 31%
Android OS - 29%
Android System - 14%
Voice Calls - 7%
Cell Standby - 6%
etc....
Why is Android OS & system using so much juice? My co-workers Moto Photon 4g OS only uses like 2%?
What should I honestly expect from the gs2's battery? I would like it to last me from 9am-9pm...but if that is not possible with this phone I may have to consider alternatives which is a shame because I love this phone.
it is easy to cut your display battery drain!
i learned from my captivate and other posts here:
*turn off gps,
*turn off haptic feedback (under sounds) - the vibration when pressing keys uses the battery with a vibrating, off center ossilating motor,
*reduce or eliminate news and/or live feed screen widgets like news or weather,
*turn down the display brightness (in display) when not needed manually, and/or use the automatic brightness setting (i am experimenting with both settings)
*use the built in, stock samsung task manager, it is a white pie chart, with green and yellow slices. set by touching "ram". it is under applications, task manager. when you open it, it remembers what you last looked at. just open it up, choose ram, and "clear memory". this also closed open apps, and often 20 tasks close. this should help.
*if you use twitter, facebook, bla, bla, bla, forget about saving battery. don't use live wallpapers. reduce stupid apps from running unless they are life or death to you.
*always charge at your desk or in your car. if you use gps in your car, use a charger. otherwise, keep gps off. keep wifi, bluetooth, etc., etc., etc. off unless you are using them.
my ideas, above, should help. the galaxy s 2 is a battery hog, has 2 processors and a lot of bloatware. the above should really help.
when seidio, a respected aftermarket battery manufacturer, offers a new extended battery, get one, like i am going to. since the galaxy s 2 is so new, seidio does not have one yet. i had a seidio on my captivate, and it trippled my battery life, no joke!
these stock batteries, since most all android phones are so thin, have not had their batteries, or new battery technology keep up with the app and program demands on the battery. and if phones get thinner and thinner, so do the batteries. how can a big battery be utilized? it can't.
my friend has a thicker new iphone 4s, and has a much bigger built in battery. the iphones never have battery issues like the paper thin androids.
please remember, these new androids are not phones - they are portable computers that also make calls.
in settings, in the "power saving mode" section, at the bottom is a "power saving tips" tab.
good luck.