You can turn off blue light on your iPhone by activating "Night Shift," which changes the color of your iPhone's display.

You’re winding down before bed and decide to check Instagram one more time. The happy vacation snaps and photos of silly cats are just the things to lull you into pleasant dreams, right? Not so fast.

You can turn off the flashlight on an iPhone in two different ways, by swiping to the Control Center or (partially) swiping ...