A. 1. Use iPhone's built-in Night Shift: Go to Settings > Display & Brightness > Night Shift. Schedule it to turn on automatically during the evening hours to reduce blue light. 2. Enable Dark Mode: Go to Settings > Display & Brightness and select 'Dark' to enable Dark Mode, which may help reduce eye strain while reading.

B. 3. Use a third-party app: Consider using a third-party app that offers night mode features for reading articles.