From what I’ve been able to gather, Italy and Greece use GSM cell phone networks, although at a different frequency than here in the US. I unlocked my Cingular Motorola V551 cell phone so that it can work on networks other than Cingular. That was a pain. It took several attempts and most of a morning. The newer Motorolas seem to be especially problematic to unlock. I purchased a SIM card on eBay that allegedly will allow me to use the phone in Italy without roaming. It will also give me a local number there.