Ok so I have three lines on family plan. 1 is unlimited data 4g phone 1 is unlimited data with basic phone and 1 is 2gb iPhone 5. In order to keep unlimited on the 4g phone line would it be possible to transfer upgraded to the 2gb data iPhone 5 who just got an upgrade last month and have that line get a galaxy s4 then swap it to the unlimited 4g phone line. Once that's done could the same be done with the other unlimited data phone line.