Enabling the Invert Color shortcut on an iPhone allows you to quickly toggle the color inversion feature directly from your device’s accessibility shortcuts. This is particularly useful for users who need high contrast to see their screen more clearly or prefer an alternative color scheme. To activate this shortcut, Follow the steps given below to quickly enable the iPhone Invert Color Shortcut.
Enable Invert Color Shortcut on Apple iPhone
Unlock your iPhone Screen using Face ID or passcode.
1. Open Setting App looks like a Gear icon.
2. Next, Find Accessibility.

3. Now scroll down the screen until the last setting option and tap on Accessibility Shortcut

4. Now, on the screen, you can see a number of options in them. Tap on Smart Invert Colors.
5. Return to the home screen and click the side button 3X (Three times).

That’s it.
Your iPhone OLED screen turns in Safari, Apple News, and messages into a true black dark mode. Moreover, it maintains most images, and the lock screen and Home screen are in their real color, giving them a natural look.
Note: Turn on Smart Invert color does disable/off Turn Tone display color and Night Shift mode.