forgive me if this has been asked, i did a quick search and everything i found on google leading to this site was different from my situation. my phones battery drains very quickly when i hit the end call button to put it to sleep. i actually get better battery life using the phone nonstop than i do when i put it to sleep, and by a significant amount. for instance i spent a half hour texting and playing solitaire and used 1% battery according to the htc battery widget, then i put the phone to sleep for less than 5 minutes and lost another 1%. if i leave it sleeping for 20 minutes i can expect to lose 5% or more, the battery will only last about 5 hours with little use. i even went as far as a hard reset (did not format the sd card) and the problem persists. sometimes the battery monitor shows the camera using a lot of power, but not always, right now android system is using 96%. putting it in airplane mode with gps, bt, and wifi off seems to stop it, right now i'm just trying to narrow things down more. it's extremely aggravating that i just got this phone and sleep mode causes the battery to drain faster than heavy use! other than the battery issue and some other minor things i miss about my bb i really really love the phone, but this is getting to be a deal breaker.