None, mac is not supported by Sprint
Some are!!
I have yet to try it, but there is a good certainty that a sprint phone is compatible with Verizon and vice versa. This is because they are both on the CDMA network. Although, if you do try to...
Yes, but you can also have a Motorola phone but yes in order to have sprint service you need a sprint phone
yes
actually, i think that a sprint i phone is coming out the summer of 2010!