My mother and I are going to do a buddy upgrade and I have a few questions. She has the basic phone plan and I have the 30$ smartphone plan. If I use her upgrade to change from my BlackBerry to an iPhone 4S. do I need to purchase the data plan too? She's probably keeping her basic phone so if that's the case how do I change the data plan back to how it was? Like instead of paying $30 each, I take her upgrade and end the data plan on her line and activate it to my line. How do I do this? And will Verizon help me through this if something goes wrong? Sorry if this doesn't make much sense!