The Night Shift Mode, introduced with iOS 9.3 operating system not too long ago, makes your iPhone's or iPad's display alter its tone and emit blue light to reduce strain on your eyes while you're playing or reading in the dark. 'Many studies have shown that exposure to bright blue light in the evening can affect your circadian rhythms and make it harder to fall asleep. Night Shift will shift the colors in your display to the warmer end of the spectrum after sunset, making it easier on your eyes. In the morning, it returns the display to its regular settings,' says Apple.
Thanks to the new trademark filing, Apple will retain the name of the feature in every device where it will be introduced. These would include laptops, smartwatches, computers, television monitors, GPS devices, tablets and future smartphones. Apple has filed separate trademarks in the United States, China and Hong Kong with different wordings and scope.
Night Shift is currently available in iPhone 5s or later versions as well as in iPad Pro, iPad Air or later, iPad Mini 2 or later and in iPod Touch 6th Gen devices.