Unlock your Samsung Galaxy S3, Note 2 and Ruby. Free. No Rooting. No Hacking.
Just dial the following keys *#197328640#
 Debug Screen
 Phone Control
 Network Lock
Options Perso SHA256 OFF
(after choosing this option, wait about 30 seconds, then go back one step by pressing the Menu button then select Back, now you are in
 Network Lock then choose
 NW Lock NV Data INITIALLIZ ..... wait for a minute then reboot your phone
Don't pay high unlocking fee's on eBay! Say no to them with a big smile
Is there a way to check if this works without another sim card??
Any codes to see if it's unlocked???