Enable Dark Mode on iPhone

  1. 1

    Settings → Display and Brightness → Dark

    Open Settings → Display and Brightness. Select Dark under Appearance. The system immediately switches to dark mode across all native apps and any third-party app that supports it.

  2. 2

    Set automatic dark mode

    Toggle Automatic on — this switches between light and dark mode based on the time of day (light during daytime, dark after sunset). Tap Options to customise the schedule.

Enable Dark Mode on Android

  1. 3

    Settings → Display → Dark Theme

    Open Settings → Display. Toggle Dark Theme (or Dark Mode, Night Mode depending on your Android version and manufacturer). Can also be toggled quickly from the notification shade — pull down and look for a Dark Mode tile.

Enable Dark Mode on Mac

  1. 4

    System Settings → Appearance → Dark

    Click the Apple menu → System Settings → Appearance (at the top of the sidebar). Click Dark. For automatic switching: click Auto — Mac switches based on sunrise and sunset times in your location.

Enable Dark Mode on Windows 10 and 11

  1. 5

    Settings → Personalisation → Colours → Dark

    Settings (Windows key + I) → Personalisation → Colours. Under Choose your mode, select Dark. Or choose Custom to set the Windows mode and app mode independently.

Enable Dark Mode in Chrome Browser

Chrome follows the system dark mode setting automatically on most platforms. To force it: chrome://flags → search "Auto Dark Mode for Web Contents" → enable. Or install the Dark Reader extension (free) which applies dark mode to all websites regardless of whether they natively support it.

Does dark mode save battery?On OLED screens (most modern iPhones and many Android phones), dark mode meaningfully extends battery life because black pixels are turned off entirely. On LCD screens (older phones, most laptops), dark mode saves minimal battery — OLED and AMOLED displays are where the battery saving is real.

Frequently Asked Questions

Not all apps support system dark mode. Apps must be specifically updated to respond to the system appearance setting. Older or less-maintained apps may stay light regardless of your system setting. Check the individual app's settings — many apps have their own dark mode toggle independent of the system setting.
In dark environments, dark mode reduces eye strain and glare significantly. In bright environments or daylight, light mode is often easier to read. The best setting depends on your environment — Auto mode (which switches based on time of day) is the most practical approach for most people.