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iPhone users are happier. Their phones are smarter. And BlackBerry users have a serious case of iPhone envy.

Thanks to improvements in the iPhone OS 3.0 software update released Wednesday, connecting to a Wi-Fi hotspot with your iPhone or iPod touch should become almost as easy as roaming on the cellular network. Two new features radically improve the process of logging in (when you've already got an account with the Wi-Fi hotspot provider) and filling out information when it's required for free access. However, there are some catches, and-wouldn't you know it?-an incompatibility or two.