Use display and text size preferences on your iPhone, iPad, and iPod touch - Apple Support

How to use a pointer device with AssistiveTouch on your iPhone

Adjust the brightness and color temperature on your iPhone or iPad

iPhone User Guide - Apple Support

How to have your iPhone or iPad highlight text as it reads your

Set up your iPhone or iPad - Apple Support

Make iPad text easier to read with accessibility features - Apple

How to use iCloud on iPod touch - Apple Support

Hide ads and distractions in Safari on iPhone - Apple Support

How to customize accessibility settings app by app on iPhone, iPad

Use and customize Control Center on iPad - Apple Support

Make iPhone text easier to read with accessibility features