Xiaomi: Schedule Dark Mode Automatically

Switching dark mode on and off every day by hand gets old fast, especially if you only want it active at night. MIUI includes a built-in scheduler for this, but it is easy to overlook because it sits in the same menu as the manual dark mode toggle.

To set it up, go to Settings ➔ Display and enable or disable Schedule Dark mode. Once the schedule is turned on, tap Turn on / off to define the start and end time for dark mode.

After saving, the phone switches the theme automatically at the times you picked, without any extra taps. This runs independently from other power-related automations, so it will not conflict with a separate battery saver schedule.

If you would rather tie dark mode to sunset and sunrise instead of fixed clock times, check the same menu for that option, since availability can differ between MIUI versions. If dark mode does not switch exactly at the scheduled time, confirm the phone is not in an aggressive power-saving mode, since strict battery optimization can occasionally delay the theme change by a few minutes.