I just stumbled upon this discussion. I know it’s been a while, but I just thought I’d share a site that provides codes to unlock phones that I found recently since there seems to still be a lot of people looking for them. I used http://www.unlockyoursim.com a couple of days ago and it worked a wonder! Nokia phone owners might be interested in checking it out, but since there are codes available for other phones as well, so would other phone owners. It provides the instructions and code for your phone after selecting the carrier and model. It will also ask you to fill out a short survey, but I didn’t mind as something good actually came out of it. So I’d recommend. I hope it works for you as it did for me!

UnlockCodes:
Give this website a try: http://www.freemobileunlockcodes.com/brands/ they have lots of phone brands available to unlock for free... i used it on my nokia lumia 630, samsung galaxy note 3 and my company phone (htc one m9) and it worked great on all of them!

I would also highly recommend using http://www.unlockyoursim.com I used it just recently and it worked like a breeze! They usually cover all kinds of phones. Hope this helps.