So i was contemplating a switch from android to apple so i've been playing with an iphone to get the hang of it. Except now i'm stuck on a black screen with a cable telling me to plug into itunes. which I did and it told me there was a problem I should restore. So i went through the process and it seemed sucessful and yet i'm still stuck on this screen. I've tried the power/volume down button trick and i get nothing.. help?!