My battery life has taken the plunge as well after jail breaking it. It was already mediocre to begin with but now its draining faster than before. Im new to ios ive always had blackberrys or androids. So this jail break was very new to me i only did it so i can tether and do minor cosmetic interface themes and lock screens. I havent downloaded much but ive done all tips and tricks for the setting and turning features off to try and help but havent helped much on battery life. Ive restored and rejailbroken. Same thing crappy battery life anyone help!!! So new to this jail breaking and ios!