Here's what I found: Pantech PG-C300 Here some codes:Code of unlocking Pantech *01763*737381* At the end may be # or * *01763*8371# SW version *01763*6371# Unlock phone? *01763*737381# unlock? *01763*3641# ENGINR. MODE BLANKET CODES: --------------------------------------- G500 G600 G700 G800 G900 --------------------------------------- *01763*476# --- Tests *01763*5640# (*01763*LOG0#) --- Disable LOG *01763*5641# (*01763*LOG1#) --- Enable LOG *01763*6370# (*01763*MEP0#) --- Disable MEP menu (unlock menu) *01763*6371# (*01763*MEP1#) --- Enable MEP menu (unlock menu) *01763*3640# (*01763*ENG0#) --- Disable Engineer Mode *01763*3641# (*01763*ENG1#) --- Enable Engineer Mode *01763*63866330# (*01763*NETMODE0#) --- Disable NetMode *01763*63866331# (*01763*NETMODE1#) --- Enable NetMode You might check these links as well: http://alfil.h14.ru/ http://forum.gsmhosting.com/vbb/archive/index.php/t-224169.html http://209.85.165.104/search?q=cach...p?t=8+"*01763*5640#"&hl=en&ct=clnk&cd=1&gl=us