LG bringing Knock Code feature to G2 and G Flex in April LG Electronics on Tuesday announced that it will make its Knock Code feature available to more of its smartphones, via firmware update starting April. The feature will soon be available on ‘key March 25, 2014 Channel/Game Online/industrial Power/IT Magazine/LCD TV/LED TV/Magazine Advertisement india/Mobile Launch/Motherboard/Networking/News/Security/Social Media/Tablet/Technology News/Telecom News/TV/Youtube Video