i have this phone and for the most part i leave it on, and the battery drain down even after i use the shut app. but tell me this last night i just turned it off and this morning the battery is dead! when i left it on the battery would drain some but it never went dead unless it was real low to begin with but it was 100% when i turned it off and now 0% so how can that be? i also have a tracfone and i used to be able to just leave it on with the screen off but the phone on and it would hold a charge for weeks and in the last year something changed on that one to it goes dead in a day or two so on that one i just pull the battery because i use it maybe once a year. it is just for emergencies on the road. i wish i could just get days, i have like 5000 min and have to keep gatting days.