requires new two-year at&t wireless service contract, sold separately to qualified customers; credit check required; must be 18 or older. Existing at&t customers who want to upgrade from another phone or replace an iphone 3g or iphone 3gs should check with at&t or use
www.apple.com/iphone/buy.
for those who are not eligible for an early upgrade or who wish to buy iphone as a gift, the prices are $499 (8gb), $599 (16gb), or $699 (32gb). In ca, ma, and ri, sales tax is collected on the unbundled price of iphone.