It seems WirelessAdvisor is the proper forum to discuss about it. My case is as follows. I was in a family plan until July, 2006. The account holder decided to cancel the family plan on July. At that time, my line's contract didn't expire until Oct, 2006, since I upgraded the cell phone. So I called T-mobile, one representative told me I can continue my contract with other plan in T-mobile until my contract ends in Oct, 2006. While, when I got out of the family plan, I had an individual plan in T-mobile. Just several days ago, I called T-mobile to ask about the contract. I got answer that it will expire in July, 2007! It means they extended my contract for one more year! So I called to argue about that, they said it's Change of Responsibility, and a new contract is required. This is different from what I heard before I left the family plan. Does anyone can tell whether I need to be extended the contract for one more year in this case? Is it always required to have a new contract after you get out of a family plan with your contract not expired at that time? Thanks for your input.