I'm in the process of selling my iPad Mini + Cellular and currently have it listed on Craigslist. I've been using it on the 200MB T-mobile free plan (It's actually a VZ iPad) that I enrolled in once they started offering it. I know I can't take the SIM and put it in a different iPad if I buy one, but I was wondering if I can transfer the plan to the person I sell the iPad to? I'm pretty sure I could just give them the iPad with the SIM in it and it would work for them, but the service would still be technically registered to me. Even though I don't have a credit card or other info associated with the account, I'd rather make sure it was in the new person's name. Is that possible? Has anyone else done it? Do you just go into the account settings at http://mim.t-mobile.com and update the user profile? It looks like it can be changed, but it also looks like it might want a credit card to be entered as well. I don't want to mess with it for fear of screwing up my plan, but was wondering if anyone has changed account ownership this way and passed the plan on to a new owner?