Right now I am a student in college under my family's share plan with Verizon. It is upgrade time for my phone, and my family's requested that I start paying for a plan on my own. So what is the process that I should follow? Do I cancel my service with Verizon and then buy an iPhone or vice versa? Should I do it from an Apple Store, ATT store, or online Apple.com? I would like to keep my old number as well. Thanks!