Unlocking the T-Mobile G1 is cheap and easy.

For $22.99 USD, you could unlocked your T-Mobile G1. All you need to do is place an order with providing your IMEI phone number at Unlock-TMobileG1.com. You will then receive the eight digit unlock code. Turn on your T-Mobile G1 with non T-Mobile sim, and enter the unlock code. Upon successful, the phone will display a “Network Unlock Successful” message.

This video shows you how easy to unlock T-Mobile G1