Screen Reader Basics VoiceOver on iPhone

If you also want to know how to use it on a Mac visit:

Screen Reader Basics VoiceOver on Mac

Or if you are new to Web Accessibility, this may be helpful:

Web Accessibility Made Easy

Activate

Go to

Settings -> Accessibility -> turn on VoiceOver

Tell Siri

“Activate Voice Over”

Stop

Tap with 2 fingers

Continue

Tap with 2 fingers again

Move

In order

Swipe right or left

Hear every word you touch

Drag the finger over the screen

Open an app, link, or button

Double-tap

Open App Switcher

Swipe from bottom to top until you feel a haptics response

Close apps

Swipe up with 3 fingers

Return

Make the Z with 2 fingers

Return to preview screen

make a Z with 2 fingers

Open Control Center

1. Tap the status bar at the top edge of the screen

The screenshot is taken from the source below, all credits should be given to them

3. Slide up with 3 fingers

Source