I just got off the phone with AT&T and bought a 4s under our 2nd line's eligibility (we have 2 lines but not a family plan). Now, that 2nd line does not currently have a data plan (Motorola Razor) and since I used its eligibility upgrade to get the iPhone 4s, It has a $25 monthly data plan with it (eff 12/29/2011). It does not need it because I will be the one using the iphone on my line. How can I go about removing this feature?