It is similar to the previous one. Same idea. The slim chip-and-circuit gizmo hugs the rear of your SIM and messes with the signals that go between it and the iPhone (or, indeed, a large number of other GSM and 3G phones) in a way that unlocks the device. Brando's product still requires you to cut your SIM to make room for the chip aboard it, but it looks a fairly simple operation. Costs just $21.