IPhone???????????????

How do phone cards work? You know the ones were you walk in the store and they have these cards on them saying 100 minutes or 1000 minutes, I have an iPhone without service so if I buy it how does it work?|||these do not work with iphones or any smart phone, these work with the basic phones or as one might call them, Pay-as-you-go phone, simply smartphones need data plans so pay-as-you-go cards only work for calling and some for texting.|||It won't. iPhone's don't work like that.