Fix: unlocked 3GS iOS 6 Activation Problems
Like me, I've noticed that many others are experiencing the problem where when updating to iOS 6 or restoring it won't allow you to activate the phone even though it's unlocked. I was finally able to fix it by performing the restore while the sim is removed and then putting it in after it turns on. You should notice that instead of the big list of languages it has english and more. You should also notice that it automatically detects that you're in America. If you have quetions don't be afraid to ask. I don't know how well it will work for you guys but it worked for me.
iPhone 3GS, iOS 6