The revolutionary phones before the iPhone

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Apple’s iPhone 3G goes on sale this morning. This iPod, GPS mapping system and wireless Internet telephone is generating some serious buzz. But is it worth all the hype?Guest: Daniel Henderson, inventor of 1993’s “Intellect,” which was designed to receive pictures and video data from a message center for display on a portable device. Two of his prototypes are at the Smithsonian’s National Museum of American History.