If you are using AT&T's G2 (D800), however, you shouldn't feel left out of the equation anymore, as the update that brings Knock Code on your device has just started its rollout. After you receive it, the option to set a Knock Code unlocking pattern will appear in the lock screen settings of your G2. As usual, take into consideration that the update might not land on your beloved smartphone right away, but it will, eventually.
Are you a devoted Knock Code user? Do you think it's yet another useless gimmick? Feel free to tell us in the comments section below!
source: Android Central