Old Postpaid SIM to be used as Prepaid?
I have an old postpaid SIM from iphone (ATT). I have since upgrade to a Galaxy and received a new SIM (same phone #).
Can I use/activate the old SIM with a prepaid service?
I know I shouldn't use prepaid with iPhone, so I also have an old Cingular Razor (unlocked b/c off contract) that I intend to use with the old iphone SIM as prepaid for family member.
Can this be done?
Can it be done online (activation site) or must I go to a store?