[ramLlama]

Well, I did say "yes, you can" so technically I did answer his question.

However, the implication is that by buying a SIM (which can also be postpaid. It is not strictly prepaid only) and a phone, you get the choice of phone and service. This may be true in Europe. It is certainly true in India, where people routinely swap SIM's.

It is not true in the U.S. There is largely no benefit to buying service and a SIM separately. Yes, prepaid is cheaper, and I forgot about that. But if you look at an apples to apples comparison of plans, there is absolutely no reason to buy postpaid off-contract when you pay the same amount regardless.