It worked for me 4 months ago. Used my wife's original Iphone for a month, switched to the 3GS, this last week switched to the Inspire. went from unilimited for IPhone to unlimited 4g. My son is using the original Iphone now and I will be giving him the 3gs next week to do the same thing. Their flaw is our gain. The scales are already tipped in their faver.