New iOS update is great news for late-night iPhone users

Most of us could barely get by without our smartphones, but there are some problems when you can't stand to have it out of your hand for more than a minute.

We've all gotten into bed and decided to check just one little thing on our phones, only to realise it was suddenly 5am. While that one last look at your Facebook or Twitter feed will probably cost you a valuable few minutes' shut-eye, the glare from the screen doesn't help either. A feature of the new iOS 9.3 update - which has just been released to developers in beta form - won't be able to force you to put your phone down at night, but will help as far as the glare from the screen is concerned. The new 'Night Shift' feature will, according to Apple, use your device's clock and geolocation to determine when it's sunset in your location. Then, it automatically shifts the colours in your display to the warmer end of the spectrum, making it easier on your eyes. In the morning, it returns the display to its regular settings. In developing Night Shift, Apple cited research showing that exposure to bright blue light in the evening can affect your circadian rhythms and make it harder to fall asleep. It is one of a number of features on the iOS 9.3 update, more information on which is provided here.