Increasing productivity - Since Instagram feed no longer appealing to your eyes, chances are you will take less and less time staring at your phone and helping you to be more focused on your work.Great way to combat phone addiction - Former Design Ethicist at Google Tristan Harris suggests black-white screen would make apps like Instagram and Snapchat less appealing since they are in technicolor.There are a lot of advantages of turning Android screen into grayscale, for example: Advertisement Why you should enable black and white mode