iPhone 101: Phone Support
When it comes to Phone support, Apple isn't exactly known for its generous terms. iPod owners can call once within the first 90 days of ownership, for example. So isn't it nice to know that Apple offers two years of complimentary technical support for your iPhone? Of course, it comes with restrictions. You have an active AT&T wireless plan subscription to qualify for support–although Apple doesn't specify which wireless plans qualify. To receive support during those two years, just call 1-800-MY-IPHONE. (That's 1-800-694-7466 if the translate-from-letters-to-numbers thing doesn't appeal to you.)
Update: The following graph comes straight from the Apple iPhone Applecare page