Officially Unlock Your iPhone
This how-to is for iPhone customers of T-Mobile in Germany. After two years on a contract you can finally get rid of the annoying SIM-Lock and use any SIM card with your iPhone. Just look up your IMEI number (iPhone System Settings/General/About) and surf to this site. Enter the IMEI of your iPhone and the page will either tell you when the two years are up to unlock your device or send the appropriate request to Apple right away. Thanks T-Mobile!