How can I give my old iPhone to my sister so that she can use it without having to hack it?

Question

Ok I’m getting a new iPhone and I am going to give my old one to my sister. But I don’t think that she can use it because iPhones are weird, they only work with the sim card that they come with. I don’t want to jailbreak it because the 2.0 software update it coming out and I want her to be able to use that too. So how do I do so that she can use it?

Answer 1

My understanding is if her sim is from the same service provider the phone is associated with - there shouldn't be a problem