With the released of the new leaked code, owners of the Samsung Galaxy Note 3 and Samsung Galaxy S4 will be able to unlock their phones on their own.
Of course, the easiest way to unlock your smartphone is to approach your carrier and get them to unlock it for you but they will only do it if you are leaving the country of if your contract has ended.
To unlock your Samsung Galaxy Note 3 or S4 with the code, you will first need to get a new SIM and insert it into your device. Next, restart the device and open up the dial pad. Key in the code, *#197328640#.
Next, select  UMTS >  Debug Screen >  Phone Control >  Network Lock > Options  Perso SHA256 OFF. Wait for 30 seconds and press back to enter the main menu. Now select  NW Lock NV Data INITIALLIZ.
It is believed that the code also works for the Samsung Galaxy Note 2 and the Samsung Galaxy S3.