One week ago I got out of Sprint, my dad's family plan, by bringing up the discount policy change argument. Now my dad has noticed my iPhone 4S is significantly faster than his for browsing and now my dad wants out. Here's the problem, my dad renewed HIS contract early this January with an iPhone 4. I'm thinking... how will he get out? I know my mom can, but will my dad be able to? Will he have to return the iPhone 4? Thank you for any help. BTW, he's going to AT&T as well.