The system-wide appearance setting available on Apple’s mobile operating system inverts the typical light-on-dark user interface. Instead of white or light backgrounds with black text, it presents a dark background with light-colored text and interface elements. This is accessible through the Settings app and Control Center.
This feature offers potential advantages, including reduced eye strain, especially in low-light environments. It may also contribute to improved battery life on devices with OLED displays, as fewer pixels are illuminated. The introduction of this display setting marked a significant update, aligning the mobile operating system with established preferences for darker interfaces on desktop platforms and in professional applications.