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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.

If you're planning to travel overseas and want to use your iPhone for data transfer with AT&T's international data plan, don't count on canceling the add-on plan as soon as you get back. Readers report that canceling the plan before 90 days after the transfer has occurred will trigger charges for data at the full, non-international-plan rate.

A caller named Alberto told an incredible story to HLN money expert Clark Howard on CNN which emphasizes once again, the need to read fine print.