iphone 3gs

Is the iphone the only phone AT&T detects the sim card in and automatically adds the data plan,if not could someone please tell what phones are included ? thx

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› See More: iphone 3gs

Any phone that AT&T determines to be a smartphone will automatically add the data plan. Blackberrys and the like. There is no "list". If you check the AT&T website, the current phones will tell you if a data plan is required with their purchase.