A new type of T-Mobile cellphone can place calls over Wi-Fi for a flat monthly fee without using regular cellphone minutes and can switch seamlessly to regular cellular service, but has a few drawbacks.
Apple’s new iPhone 3G S and OS 3.0 offer plenty of new features. But the software may be enough of a boost to keep many users from buying the new model, Walt Mossberg writes.
Edited by Walt and written by Katie Boehret, this is a guide to gadgets, web services and other consumer technologies.
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