how to hard reset T-Mobile G1 Android

just sharing to you who have not understood, may be useful, please follow the instructions below if you want to know how hardreset T-Mobile G1 Android:Resetting the T-Mobile Google G1 Android PhoneResetting the Google phone deletes all data, including downloaded applications, and resets the phone backto its initial state—the state before you turned on the phone for the first time. Important Make