Step1: Insert the card Step2: Switch on your Samsung SGH-A107 normally
Step3: Then press #7465625*638*99435020# or, Dial #7465625*638*CODE# After pressing this code your phone will restart automatically, Please wait until your phone come back in normal mode.Step4: After come back your phone in normal mode, press this code again *7465625*638*00000000*00000000#
(your network lock incorrect) Step4: Your device is unlock now, and it's password has set as default password.