Wirelessly posted (8820 on WiFi)
Please clarify your post? Is the model an 8330, 8830 or other variant etc? If it is CDMA (dosent have a SIM card) then there is a large possibility that other networks will not accept the device on their network. If it is GSM (more common and takes a SIM card) then all that needs to be done is for the device to be unlocked and another network's SIM card needs to be placed into the device.