Yet another tool to unlock those pesky carrier locked phones. This one involves a little sim cutting but they claim that it makes it work better.

Technical Details:
Does not do any changes to your SIM card or phone (you only have to make a cut in the SIM card) Does not influence any communication between the phone and the network and vice versa Real time on the fly communication modifications, does not reroute SIM card traffic (It’s transparent to the phone) Work with 1.8V, 3V and 5V SIM cards Works with normal and inverted protocol SIM cards It’s slim enough to fit together with your SIM card into most phone’s SIM socket.

via USB Fever