Protecting Your Eyes and Preserving Battery Life
If you find yourself squinting when you look at your iPhone late at night, or if reading bright white web pages is causing eye strain during your morning commute, it is time to enable Dark Mode. This feature fundamentally shifts the aesthetic of iOS, replacing blinding white backgrounds with deep blacks and dark greys, while turning standard black text into a highly legible white.
However, Dark Mode provides more than just a comfortable viewing experience in low-light environments. If you own an iPhone with an OLED display (which includes the iPhone X, iPhone 11 Pro, and all iPhone 12, 13, 14, and 15 models), enabling Dark Mode can significantly improve your daily battery life. OLED screens light up individual pixels independently. When a pixel needs to display true black in Dark Mode, the iPhone simply turns that specific pixel completely off, drawing zero power from the battery.
Apple allows you to enable Dark Mode manually whenever you want it, or set it to activate automatically on a daily schedule so you never have to think about it.
Method 1: Enabling Dark Mode via the Control Centre
The fastest way to toggle Dark Mode on or off instantly is by using the Control Centre, which you can access from any app or even from the lock screen.
- Open the Control Centre.
- If your iPhone has Face ID (no physical home button), swipe down firmly from the top-right corner of the screen (over the battery icon).
- If your iPhone has a physical Home button, swipe up from the very bottom edge of the screen.
- Locate the Brightness Slider (the thick vertical bar with a sun icon inside it).
- Press and hold your finger anywhere on the Brightness Slider for about one second until the slider expands to fill the screen.
- At the bottom of the expanded screen, you will see a circular button labelled Dark Mode. Tap this button to instantly switch the interface from Light to Dark (or vice versa).
- Tap anywhere on the empty space outside the slider to return to the Control Centre, and swipe up to return to your app.
Method 2: Configuring an Automatic Dark Mode Schedule
While the Control Centre method is fast, the best way to use Dark Mode is to automate it. You can tell your iPhone to use the standard Light Mode during the day when you are fighting glare from the sun, and automatically switch to Dark Mode in the evening when your environment gets dimmer.
- Open the Settings app on your iPhone.
- Scroll down and tap on Display & Brightness.
- At the top of this menu, you will see visual options for Light and Dark. Below these options, toggle the switch labelled Automatic so it turns green.
- A new menu option will appear below it called Options. Tap it.
You now have two choices for your automated schedule:
- Sunset to Sunrise (Recommended): Your iPhone will use its location services to determine exactly when the sun sets and rises in your specific city, and will automatically toggle Dark Mode on and off at those precise moments every day.
- Custom Schedule: If you prefer strict control, you can select specific times. For example, you can tell the phone to turn Light Mode on exactly at 07:00 and turn Dark Mode on exactly at 18:00, regardless of what the sun is doing outside.
How Dark Mode Interacts with Third-Party Apps
When you enable Dark Mode at the system level (either manually or via a schedule), all built-in Apple apps like Messages, Mail, Notes, and Safari will instantly respect the change.
Fortunately, the vast majority of popular third-party apps available on the App Store (including WhatsApp, Instagram, X/Twitter, and Google Maps) are programmed to “listen” to your iPhone’s system setting. When the system shifts to Dark Mode at sunset, these apps will automatically turn dark at the exact same moment without you needing to do anything.
If you encounter an app that remains stubbornly bright white despite Dark Mode being active, you will need to open that specific app, navigate to its internal settings menu, and manually look for a “Theme” or “Appearance” toggle to force it into a dark aesthetic.
