The slick ads for Apple's "revolutionary" new iPhone promise to "put the Internet in your pocket." But the only way to get one of these gadgets is to sign on with AT&T -- which limits what you can do and where you can go on the wireless Web.
You don't have to own an iPhone to know why this problem persists: The big mobile phone companies lock their devices so they won't work on other networks, cripple innovative new applications, stifle...
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