I currently have a Samsung Propel, but want an iPhone. I got one off eBay for cheap (my sister was going to give me hers, but my mom decided she wanted it
) So I read all I have to do is pop my SIM in and plug it into iTunes and follow the instructions on the screen, but I'm currently on a FamilyPlan with unlimited text and all that. So when I plug it into iTunes and click on the "replace current cellphone with this iPhone" will I still be on my family plan or will they make me chose a new plan?