Which feature allows users to adjust screen brightness automatically on their device?

Auto-Brightness is the feature that enables users to automatically adjust the screen brightness of their device based on ambient light conditions. When activated, this setting uses the device's built-in light sensor to detect the surrounding light levels and changes the display's brightness accordingly, ensuring optimal visibility in various environments. For example, when a user enters a darker environment, Auto-Brightness will decrease the screen brightness to reduce eye strain, while increasing it in brighter surroundings to maintain readability.

Other options like Night Shift and True Tone offer different functionalities related to color temperature and display comfort, while Display Zoom affects the size of the content on the screen but does not modify brightness. Hence, the automatic adjustment of screen brightness is specifically facilitated by the Auto-Brightness feature.