yes you do because so far only att only carries apple iphones and things like that
It's rumored Apple may come out with iPhone 5 sometime in 2011 that won't have SIM cards. Which means you may be able to use it with other service providers such as Sprint.
no
yes
According to Sprint customer service you can not use Boost phones with a Sprint service account.
Yes if you buy an iphone and use geohot's black snow and get an international sprint sim
It would depend if the iPhone had been unlocked by Sprint if it is then you would need to migrate over to verizon service for which you would need a MAC code.
iphone
Verizon, Sprint, and AT&T
At&t, sprint, and verizon but i would reccomend verizon because at&t and sprint have the worst service
Apple will sell you an iPhone but you need to have a service plan for the phone to work. People auction off old iPhones on EBay and Amazon has used phones as well. Basically, you can get the phone anywhere but get your cellular service from sprint.
Sprint doesn't use SIM cards...
Proably on launch day. The iPhone has been on Sprint since the launch of the iPhone 4S.