To find out if your phone is locked, simply place a different SIM card in the phone and turn the phone on. Ensure you use a different SIM and not the SIM that the phone was supplied with. If the phone does not allow you to view the menu and displays an error message such as "SIM not valid", "Phone Restricted", "SIM not accepted" then your phone is most likely to be locked. If the phone does allow you to view the menu then the phone in unlocked