Originally Posted by
NetBrowser07
Anyone here have success unlocking a Nokia Lumia 900 from ATT? I have an unlock code (from ATT) but not sure how to use it.
I don't know specifically for the Lumia 900, but normally it's just a matter of putting in a non-AT&T SIM card, at which point it will prompt you for the unlock code. Enter that, and you're away.
The SIM you use doesn't even need to be active - an old T-Mobile SIM or the like will work fine.