The combination cell phone, media player and wireless Web-surfing device will retail for $499 and $599, depending on configuration. It will be offered exclusively in the U.S. by AT&T Inc.'s wireless division, formerly known as Cingular.
The iPhone, which sports no keypad but instead a touch-sensitive screen, was unveiled with great fanfare in early January by Apple CEO Steve Jobs.
He said it would appear in stores in June but gave no specific date.
Sunday night's ads showed off several of the gadget's features and ended with the pronouncement that the phone will be available "Only on the new AT&T" and "Coming June 29."
Tom Neumayr, an Apple spokesman, confirmed the June 29 sale date. An AT&T spokesperson did not immediately return a phone call.