I just had to get a new phone thru my Best Buy insurance because of a burnt out pixel and while I was there the geek squad guy said something about how you should redo your battery profile or something if you jailbreak your phone because it reads it one way on an un-jailbroken phone, and another way on a jailbroken phone. Forget exactly how he worded it but was he right? If so does anyone have a link on the process?