T Mobile USA HTC G1 Unlock Instructions This will work on HTC G1 Google phone on other GSM carriers. 1. Switch ON the HTC G1 Google Phone with a sim card that is not accepted (does not matter if it is active or inactive). 2. The G1 will prompt you for a "SIM Network Unlock PIN" 3. Enter the unlock code and hit the unlock button. You will get a message that says "Network Unlock Successful", your phone is now unlocked. This will work on HTC G1 Google phone on other GSM carriers.
Get Unlock Code for T Mobile HTC G1 Unlock Codes