Non-standard unlock method applied in the new smartphone LG 2 G Pro. New from LG to specify special knock, when playing a smart phone will be unlocked. If you stuknete the screen is not as expected, the unlock will be denied. This feature was called the Knock Code and followed a KnockON unlock Smartphone double thud across the screen. In addition to unlocking innovation, LG 2 G Pro has a 5.9-inch full HD screen, Snapdragon processor 800, 3 GB of RAM and battery capacity 3200 mah.