To make reading on the OnePlus smartphone screen easier or more pleasant, we can activate the high contrasttext function.

This feature displays text with a wider margin, resulting in higher contrast and sharper display, which improves readability.

Android 10 | OxygenOS 10.0
Step 1:  Open the  Settings
Step 2:  Tap on  System
Step 3:  Tap on  Accessibility
Step 4:  Enable or disable  High contrast text
  1. Open the Settings
  2. Tap on System
  3. Tap on Accessibility
  4. Enable or disable High contrast text

OnePlus Instructions