This looks identical to my LGC-330W phone, this is a dual mode AMPS & CDMA model. I cannot re- program the NAM settings in mine, the six digit security code has been changed from the default setting, no idea what it is now. Real bummer ! There are two hidden menus in the phone. Press Menu, 4, 0 to access the NAM program settings. The default security code is 000000 Press Menu 8, 0 to access the service test mode.