Walt Mossberg takes an early look at add-on hardware and software for the iPhone. While the iPhone uses the same hardware ports as the iPod, most add-ons will require buying new gear or adapters to make the old iPod gear work.
Two of the most important wireless earpiece makers are bringing out new models that attempt to make their products more attractive and functional. Both work well, despite some drawbacks.
Edited by Walt and written by Katie Boehret, this is a guide to gadgets, web services and other consumer technologies.
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