Whether or not you give a hoot about the new 4in iPhone or cheaper Apple Watch, if you
have an iPhone you should be pumped about the latest version of iOS 9 that just rolled out with them. It's packed with lots of tiny tweaks and new features for iPhones and iPads, but the coolest addition is something Apple's calling Night Shift mode. It's a game-changer for low-light situations, and it will even help you sleep better.It's no secret that the iPhone's glowing screen can mess with your eyes and throw off your circadian rhythms, resulting in a screwy sleep schedule. Enter Night Shift mode, which is basically a baked-in version of the f.lux iPhone app. It gradually and automatically changes the color temperature of your phone display based on the time of day, thus reducing the amount of blue light emitted from the screen for happier eyes and better sleep. https://www.thrillist.com/tech/nation/new-iphone-update-ios-93-features-night-shift/tech
