The Night Shift toggle has been removed from Control Center in iOS 11 (Public Beta 1). There is also no option to add a Night Shift toggle in the Control Center customization settings. To manually enable or disable Night Shift you now have to navigate to Settings > Display & Brightness > Night Shift. From here tap the "Manually Enable Until Tomorrow" to enable Night Shift on your device.
Night Shift makes it possible for iPhone owners to warm the color of their displays at night. Some iOS users prefer to manually switch on this feature, which is designed to help improve sleep and match warm evening hues after the sun has set. Night Shift can also be invoked automatically, either on a timed schedule or based on the local sunset time. But what happens if the Sunset to Sunrise schedule option is missing from Night Shift settings?
Great news for Twitter fans who enjoy reading the latest tweets after dark. The official Twitter app has received a built-in night mode. When enabled, this mode reverses text and background colors to enhance reading in low-light situations. While the feature is simple, it does the trick efficiently. Images are not altered, and night mode cannot be invoked automatically or on a schedule.
Night Shift, first introduced with iOS 9.3 is limited to devices with 64-bit processors. This means that on some older Apple hardware Night Shift is not supported.
Long time users of f.lux may be wondering how Apple's Night Shift, introduced with iOS 9.3 compares when it comes to displaying warmer tones at night.