The company also stated that the availability of this feature will vary on different models from region to region. Number of devices that will be receiving this update was not revealed by the company.

"Knock is distinctively an LG UX and a great example of what happens when you marry the latest in mobile technology with consumer-centric insights. No one ever thought that a power button needed to be improved until our engineers wondered why they couldn't turn the entire screen into a power button,” said Dr Jong-seok Park, president and CEO of LG Electronics' Mobile Communications Company.

"Knock" made its debut non LG G2 and later extended its reach to the LG G Pad 8.3 tablet, and the LG G Flex. L G Optimus L1 II Dual, LG Optimus L7 II Dual, LG Optimus L5II Dual, LG Optimus L3II, and LG Optimus L3II Dual come under L series II smartphone banner.