This is how to Unlock your HTC XV6600 cell phone from any GSM carriers such as Rogers, Telus and AT&T.
When you turn on your device with a SIM card that is not from the original carrier, you will receive the "SIM Network Unlock PIN" message. Enter the 8 digit Network Unlock Code we email to you and this will permanently unlock your HTC XV6600 to be used with any GSM carrier.