Can someone explain what happens during activation over the phone? I've never done it this way before and my wife is going to be home on Friday and probably will be anxious to try and use her phone. That being said, I don't want something she does unintentionally to botch our grandfathered plans with unlimited data and 200 messages for 5$. Her line is the secondary on our family plan. Does activation have the chance of altering our plan settings? Can an iPhone be used for non phone usage without activation until I get home? Even better, is it a straightforward process where she can call me on the phone if she has any questions?