Anyone who has a locked version of a Samsung handsets, for instance the Samsung Galaxy Note 2 or S3 can now unlock their device and then use it with any carrier.
Say for instance you bought the Samsung Galaxy S3 with Verizon. If the handset is locked then it can only be used with that carrier. But if you were to unlock it and you are not in contract then you could take it to any carrier.
You would even be able to send the handset overseas.
So take out your Verizon SIM card, or the SIM card of your carrier, and put in any other. Switch your handset off and then turn it back on again.
Go to the dial pad on your phone and type in *#197328640#. Head to your main menu >  UMTS >  Debug Screen >  Phone Control >  Network Lock > Options  Perso SHA256 OFF. You then need to wait for around 30 seconds before going back into your main menu and selecting back. You should see “Network Lock” now. Choose  NW Lock NV Data INITIALLIZ.
The sequence that you should have typed in is “Asterisk Pound One Nine Seven Three Two Eight Six Four Zero Pound”. Don’t forget that some people call the asterisk the star button, and call the pound button hash.
You should now be holding a Galaxy handset that you can use with any SIM card anywhere in the world. Bear in mind that as this code has been used for some time you may be able to use it with just about any Samsung device.