iPhone 3.0: Apple’s New Device Has Competition

When Apple Inc. launched an updated iPhone at its annual gathering of software developers last June, its biggest competitor was the iPhone that Apple had introduced the year before.

That won’t be the case at this year’s conference, which opens Monday. Now the next version of Apple’s touch-screen phone has to outdo a slew of rival gadgets — including one that comes out this weekend — that emulate or improve on some of the iPhone’s best features.

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