iPhone has accessibility features that you can turn on the first time you turn on your iPhone, to make it easier to set up and personalize other iPhone features.
VoiceOver—a gesture-based screen reader—tells you what’s happening onscreen.
After iPhone is turned on, triple-click the side button (on an iPhone with Face ID) or triple-click the Home button (on other iPhone models) to Zoom
Turn on and set up your iPhone. (See Get started with accessibility features on iPhone