I jailbroke my iPhone 4s about 4 days ago and my phone died last night, so I charged it this morning and it turned on, and pops up like it's a new phone and I need to activate it again. 'It may take a few minutes to activate your iPhone. But at the top of the screen you can still see my jailbroken carrier name? so all the stuff is still their but it wants me to activate it? any idea what is going on? 
