Alex Heath / Tech InsiderYour iPhone's bright blue display doesn't have to hurt your eyes at night anymore.
Apple has introduced a new feature called Night Shift for the iPhone and iPad that automatically makes the display's color palette warmer once the sun sets. It's available for developers and public beta testers of iOS 9.3, an update that will be released for everyone to use in the coming weeks.
Plenty of scientific research has shown that it can be harmful to look at your smartphone's screen at night — doing so can negatively affect your sleep quality and cause even more serious health problems.
Night Shift mode is a set-it-and-forget-it kind of feature that could make using your device in the dark a lot easier on your eyes. Here's how to set it up.
To use Night Shift mode, you have to be running the iOS 9.3 beta.
App developers automatically have access to the beta, and so do members of Apple's public beta software program, which anyone can join.
If you'd like to get access to betas on your iPhone or iPad, visit Apple's website and follow the simple steps to get your device registered. Then you'll be able to download iOS 9.3 from the Settings app.
Once you have iOS 9.3 installed, go to your display settings.
You'll see the new Blue Light Reduction option. This is Night Shift mode.
You can adjust the color temperature of your display with the slider and see how it affects your display in real time. The darker of an environment you're in, the more warm you'll want your display to be.
The feature can be scheduled to turn on and off automatically with the sunset and sunrise every day.
You can also create a custom schedule for enabling the display color change at a certain time every day if you'd rather not time it to the sun's movement.
You can always manually turn it on too.
If you're interested in the implications of your display's color temperature on your eyes, check out our graphic breakdown.