If you're fed up with using an iPhone on AT&T's network, you now can download software to unlock your Apple handset. One package, developed by iPhoneSimFree, is now available from resellers in the U.S., the Middle East, and Europe. It'll set you back $99. Once installed, though, the app allows you to use your iPhone with another carrier.

The world's hackers have been obsessed with unlocking the iPhone from the day it was released. In late August, teenager George Hotz and a team of hackers developed a hardware hack to unlock the phone. In contrast, the iPhoneSimFree product is a pure software solution, the group said on its Web site.

Tuesday night, however, the iPhone Dev Team announced it had developed a free alternative to iPhoneSimFree's product. But the procedure involves downloading several different software packages, executing commands from a shell, and following other instructions. "This unlock is not for everybody!" the team's Web page warned.

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