I just got my Nokia 6151 back. And guess what? Instead of fooling around with the security code, I had to fuck around with the PIN code.
And you know what happens if you screw up too many times, it turns to the PUK code.
When that happens, you have a chance to figure out the PUK code, then you'll end up with the same PIN code nonsense again.
But once you try too many times, it'll lock your SIM Card down, and now..
.... My 016 number is down.
But my phone is back online.