My Gs2 uses more power overnight when not in use. Funny as it sounds its better on battery during normal use through the day. I checked the battery stats which are giving me high readings for the andriod os, 90% +. Im fully updated through kies, android 2.3.6. My phone is not rooted. Overnight :- All connections swithched off. No updates and just total sleep. All apps under control. 8hrs = 40% battery drain. Battery stat shows, Android os 90% + Daytime :- Connections manually controlled by me when i need them. Plenty of texts and some calls. A bit of browsing and use of android market, some photos and a few games. 12hrs = 40% battery drain. Battery stat show, Android os 35% I would like to figure this out! Im sure other people have experienced similar issues.?