I've bought a S3 mini on amazon.com which should be an unlocked international version. Unfortunately, the phone turned out to be locked and when I put a sim card in it, it asks for a network unlock code. Normally I would send it back but I have bought it while in US and now I will be pain in the ass to send it back. As the phone came as unlocked and without any service provider info. Therefore i don't know what network it belong to. I know that it is possible to identify the phone origin by the numbers in the about screen but that is all I know.
So I'm asking if anyone of you guys know how to unlock this phone? Your assistance will be highly appreciated.