I have an upgrade available to me now. Currently I have a regular flip phone which I'm happy with. I'm considering buying a 4S to turn around and sell. The problem is I'll have to switch to a plan with a data package to get the phone. After I sell the phone, can I then remove the data package from my account and return to using my old phone?
Yes but you will have a contract with a cancellation fee of $350 no matter if you have a smart phone on there or not.