well the vibrate switch on my phone somehow came loose, and if i press on my screen it activates. so im going to replace my iphone tomorrow at the apple store. however, its jailbroken and im not quite sure how to go about backing everything up. theres so much i have done to it, and i dont want to loose anything. will i have to repay for paid cydia apps again? or is it stored in my account like itunes? is there a backup app i need to use? help please