I’ve been on the beta version of iOS 9.3 for about a week now and the most evident upgrade to iOS 9 and my eyes is, without a doubt, Night Shift.
What is Night Shift?
It’s a new feature in iOS 9.3 that shifts your display’s colours from the cooler spectrum to the warmer end. Under Settings, you’ll notice a new Display & Brightness tab. When you tap on it, you’ll find a neat new section devoted to Blue Light Reduction.
What it does upon us enabling it is it shifts the whites in the display towards the warmer spectrum. Why? Simply because blue light strains your eyes and can mess with your natural sleep cycle. It’s not obvious in daytime since you should be working (and not dozing off) and you need it to better view your iPhone’s display. But when night falls, it gets glaring, really glaring.
Speaking from experience...
I never realised how much of a difference light temperature makes until I downloaded the beta version of iOS 9.3. Since I use two phones, an iPhone and an ever-changing Android phone (to keep my Android senses as sharpened as my iOS ones), I immediately noticed its impact.
Before falling asleep, I have the habit of checking my phones one last time, and I found myself reaching for my iPhone to carry out most of my social media duties in the dark. I honestly don’t know if it helps me fall asleep easier (since I typically don’t have much trouble on that end) but the relief on my eyeballs was evident, going from stark blue light to a warmer glow.
You won’t realise how it feels like blue light has been sticking pins into your eyeballs until you experience the comforting hue of a warmer light temperature. It might look like a ghastly jaundiced display right now, but experience it in darkness and it will feel like eyeball salve. Once you go Night Shift, you probably won’t be able to go back.
Under Schedule, I have it on From Sunset to Sunrise so it automatically makes the change from a cooler light temperature to a warmer one when night falls based on my geolocation. I don’t have to mess with it anymore, and it automatically shifts back when day breaks and my eyes don’t feel as fatigued by blue light.
You can also choose to switch it off completely or have it kick in at the timing of your choice. Enable it, your eyes will definitely thank you for it, after a hard day of staring at your computer screen. In fact, you're probably wishing you're reading this with Night Shift enabled on your iPhone right about now.