Ensure a SIM Card is inserted
Go to 'Manage Connections'.
Click on 'Turn All Connections Off'.
Go to 'Options'.
Click on 'Advanced Options'.
Click on 'SIM Card'.
Type 'MEPPD'. Letters will not appear on-screen but a menu will pop up.
Type 'MEPP2'. You will be prompted to enter MEP code.
Note: For Telus, use 'MEPP4'.
Enter the unlock code (CONFIRM you get "Code Accepted" message)
Reboot device.
Go to 'Manage Connections'.
Click on 'Restore Connections'.
Device is now unlocked.