The keyboard on my current cellphone just fell off and i need to get a new phone, i've always wanted to get an iphone, but my family uses Alltel, is there any way if i do get an Iphone, i could use it with the Alltel service? I've heard of people that have said they have done things related to the SIM card, or something like that, that allows them to use it on different services, can anyone tell me if this is possible, and if it is, how i could do it?