I do not have a contract with AT&T, just month-to-month for the cell phone service. If I purchase a newer iPhone (I've been using the one I have for years), am I able to stay month-to-month or have they done away with those ? I haven't been inside an AT&T store in quite a while. If it is possible, where is the best place to buy an older (i.e. iPhone 5) phone ?