Turn on Dark Mode with Siri

Quick answer

"Turn on Dark Mode" and Siri switches the system appearance to dark across apps that support it. Say "turn on Light Mode" to switch back. Easier on the eyes in low light, and quicker than the toggle buried in Display settings or Control Center.

Say this

“Turn on Dark Mode”

How it works

01Wake Siri
02Say "turn on Dark Mode" or "turn on Light Mode"
03Siri switches the appearance instantly

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If Siri doesn't get it

If appearance is set to change automatically by schedule, a manual Siri switch may be overridden at sunrise or sunset. Adjust in Settings > Display & Brightness.

Notes from people who tried this

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Last updated June 12, 2026