Okay so I am currently with a family plan that has five lines on it that has limited talk and unlimited text. What I want to do is buy an Iphone 4s, which requires a 25 dollar data plan. Can my line (that I will use for the iphone) still connect to the family plan and the new data plan(that will only work on my iphone not the other four lines)? Also, would adding this INDIVIDUAL data plan count as an upgrade so I can get the iphone 4s for 200 dollars instead of full price? If I need to be more specific, say so below and check back for additional answers. Please answer only if you are sure, but any help is appreciated, as I do not have to actually go in store yet.