You can do a lot with the iPhone—make a phone call, surf the Web, watch a movie—just with the touch of a virtual button. But dig a little deeper, and you’ll find you can do a lot more. After putting the iPhone—which hit market shelves June 29—through its paces, here are 21 tips for getting the most out of the its advertised features—or using features you might not know were part of the repertoire.

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