is it possible?

[appleboy21]

I charged my iphone 4 yesterday. but now usage and standby times are not logical

i am sure that i haven't used phone 15 hours since full charge. it might be a application still open in background?

 

[SleepingGhost]

I'm sure there's something thats been running in the background. Otherwise it is quite illogical. Maybe you should turn it off and back on to reset all apps. But if it's anything like an android, then there might be a listing of what applications are using the most battery life.