Use accessibility features with Siri on iPhone
Siri is often the easiest way to start using accessibility features with iPhone. With Siri, you can open apps, turn many settings on or off, or use Siri for what it does best—acting as your intelligent personal assistant.
Ask Siri. Say something like: “Turn on VoiceOver” or “Turn off VoiceOver.” Learn how to ask Siri.
Siri knows when VoiceOver is on, so will often read more information back to you than appears on the screen. You can also use VoiceOver to read what Siri shows on the screen.
Type instead of speaking to Siri
Go to Settings > Accessibility > Siri, then turn on Type to Siri.
To make a request, summon Siri, then interact with Siri by using the keyboard and text field.
Control voice feedback for Siri
Go to Settings > Accessibility > Siri.
Choose Always On, Control with Ring Switch, or Hands-Free Only.