Was trying to reply to a similar thread here http://forum.xda-developers.com/showthread.php?t=2014982 but as I'm a "Noob" I can't. Anyway they were asking if anyone can confirm the Galaxasim Unlock app (2.99) works. Well the answer is yes for the following anyway.

3 Ireland GS3 tested with Vodafone Ireland Sim. Everything works fine.
Vodafone Ireland G Note 2 tested with 3 Ireland Sim. Everything works fine
Vodafone Ireland G Note 2 tested with Vodafone Spain Sim. Everything works fine.

Best spent 2.99 ever. Took 5 seconds and a re-boot. Apparantly stays locked after reset, flashing new roms etc ....but not tested that yet. Heading to Spain next week so will report back if anyone interested

Paul.