This wesbite is provided by the SamsungGeeks as a free way for people who can not hack/root their device to factory unlock their phone.
This is similar to the way you would traditionally unlock a phone with an unlock code and entering an incorrect sim card into the device and entering that code. This is now very similar but it is done over the air a carrier update.
All you need to do to unlock your Samsung phone is follow the steps below by entering your device & your IMEI number and thats it !
It will take our website about 20 minuets to sync with the carrier's servers at which point you will be offerd an "update". This is a carrier update. Just accept this and your phone will be unlocked on the next reboot.
Enter your IMEI number: