Hey guys I have an iphone4 with unlimited data plan. I lost it somewhere so I got a new SIM card, activated it, and put it into an old Nokia n series, I wasn’t working till now. But this morning at&t sent me a text message saying that I needed a data plan for my smart phone so they forced me on the 2GB data plan. I don’t understand why at&t data plan change without my consent when I already had a data plan on my account?