If a screen is too bright or too dim, your eyes work hard without you noticing to follow the text, and you feel tired by evening. Using standard features such as auto brightness, dark mode, and larger text makes a big difference in readability both outdoors by day and in a bedroom at night. This book carefully lists where to find key settings on major phones and recommends combinations for each situation, in a way beginners can follow.

Recommended for: People who squint at their screen and want to tune the settings.

- Using auto brightness

- Dark mode tips

- Enlarging text

- Bold text and zoom

- Reading outdoors

- Settings by situation

*Digital guide in PDF format. Not a substitute for medical advice.