Warning: Do not enter any wrong unlock unlock codes on your LG CU405 mobile phones. If you enter over a certain amount of wrong unlock codes on your mobile phone, your phone may get hard locked and sometimes become unusable.1 - Switch ON your LG CU405 with a
NOT ACCEPTED SIM Card.
2 - LG CU405 will display "Invalid SmartChip".(IF THE PHONE DOES NOT DISPLAY INVALID SMARTCHIP, PLEASE POWER OFF AND ON AGAIN)
3 - In Idle screen, enter :
159753#*#.
4 - LG CU405 will display "
Enter NCK, Remaining 5".
5 - Enter the Unlock code.
6 - Select "OK".
7 - Your LG CU405 is now successfully unlocked.
NOT ACCEPTED: We mean, to use a sim card from a network other than the network your LG CU405 is locked to.
Each LG CU405 mobile phone has an unique unlock code. You can buy the unique unlock code for your LG CU405 mobile phone at www.mobileunlocksolutions.com.