How to Turn On Dark Mode on Android and in Your Social Apps

Dark mode switches the bright white backgrounds of Android and your apps to dark colours. Many people prefer it in the evening or in dim rooms, and some find it easier on the eyes. It is also one of the simplest customisations you can make, because Android and most social apps support it without any extra tools.

This guide covers the system setting, scheduling, per-app options and the most common reasons an app refuses to follow your choice. Menu names vary by phone brand and Android version, so use the search bar in Settings if a path below does not match your phone.

Turn on dark mode for the whole system

1. Open Settings and go to Display (on some phones, Display and brightness).
2. Look for Dark theme or Dark mode and turn it on.
3. On Samsung, the options appear as Light and Dark at the top of the Display screen.
4. You can also add a Dark theme tile to Quick Settings by swiping down twice, tapping the edit (pencil) icon and dragging the tile into place.

Apps that are set to follow the system theme will switch automatically.

Schedule it

Most phones can turn dark mode on and off automatically:

1. In the same Dark theme or Dark mode screen, look for Schedule or Dark mode settings.
2. Choose Sunset to sunrise, which uses your location and time zone, or set custom times.
3. On some phones, the sunset option needs location access for the system.

A schedule is useful if you like light mode in daylight and dark mode at night without thinking about it.

Per-app theme settings

Each app usually has a theme option. Setting it to System default or Use device settings makes the app follow Android. Choosing Dark or Light forces that theme in the app only.

• WhatsApp: Settings → Chats → Theme. Choose System default, Light or Dark. The chat wallpaper can be changed separately under Chats → Default chat theme or Wallpaper, depending on the version.
• Instagram: open your profile, tap the menu, go to Settings and activity and look for Theme or Dark mode. On many versions Instagram simply follows the system theme.
• TikTok: Profile → menu → Settings and privacy → Display (or Dark mode on some versions).
• Telegram: Settings → Chat Settings, then choose a dark theme or turn on Auto-Night Mode, which can switch on a schedule or based on screen brightness.

Modified versions such as JTWhatsApp, JTInstagram, JTikTok and JTelegram usually keep the original theme option and add their own theme menus, with extra colours and styles. If you use a mod theme and the Android dark mode at the same time, the two can conflict; pick one approach and apply it consistently.

Dark mode, battery and eye comfort

On phones with OLED or AMOLED screens, dark pixels use less power than bright ones, so dark mode can help battery life somewhat. How much depends on the screen, the brightness and what you are viewing. On LCD screens, the backlight stays on regardless, so the effect is small. Screen brightness and screen-on time usually matter more than the theme.

Dark mode is also different from a blue light filter. Features such as Night Light or Samsung's Eye comfort shield warm the colours of the screen, while dark mode changes the background. You can use them together.

When an app does not follow dark mode

1. Check the app's own setting. If the app is set to Light, it ignores the system theme. Change it to System default.
2. Update the app. Older versions may not support dark mode.
3. Restart the app after changing the system theme.
4. Web pages inside apps may stay bright, because they depend on the website's own design.

Some Android versions include an option in Developer options that forces dark colours on apps that do not support them. It can make some screens hard to read, so leave it off unless you are comfortable reverting it.

Key takeaways

• Turn on dark mode under Settings → Display, and add a Quick Settings tile for fast switching.
• Use a schedule to switch automatically at sunset or at times you choose.
• Set each app's theme to System default so it follows Android, or pick a fixed theme per app.
• On OLED screens, dark mode can help battery life a little; on LCD screens, the difference is small.
• If an app stays bright, check its own theme setting and update it.