Model : Samsung Z510, Z320i :

1- Switch ON your phone without SIM Card,
2- Compose : **CODE#

Model : Samsung 3G, Zxxx & Dxxx Series :

1- Switch ON your phone without SIM Card,
2 - Compose : #7465625*638*CODE#

Model : All others Samsung

1- Switch ON your phone without SIM Card,
2 - Phone will ask for "Password",
3 - You can now enter the Unlock Code we sent to you.

OR (if phone shows "Insert Correct SIM Card")

1- Switch ON your phone without SIM Card,
2 - Compose : #0111*CODE#

Note: CODE = The unlock code we sent you.