ok now that i have my iphone 4..i gave my lil sis my iphone 3GS she in a family plan im solo on mine shes on att.. i put her sim card in everything works just the cell data pops up saying needs data plan but she already has a data plan on her phone is a samsung impression has internet...do i need to call AT&T to have them configure the network?
also she has unlimited data...will she fall on the data pro/new data plan? can she keep her unlimited data?
thanks

also she has unlimited data...will she fall on the data pro/new data plan? can she keep her unlimited data?
thanks
