How to use SIRI
Siri is often the easiest way to start using the accessibility features on your iOS device. With Siri, you can open apps, turn some of the settings on or off, or use Siri as a personal assistant to complete tasks.
For example, Press and Hold the Home Button on older devices, or the Side Button on a newer device, and say "Turn on VoiceOver" or "Turn off VoiceOver."
Siri with VoiceOver
Siri knows when VoiceOver is turned on; it will often read back more information than appears on the screen
Remember that you can also use VoiceOver to read the Siri notification on the screen. A use of this might be asking Siri how to spell a word, when you hear the result you can swipe through the word letter by letter.
Set how long Siri waits for you to finish speaking
1 Go to Settings/Accessibility/Siri.
2 Below Siri Pause Time, choose Default, Longer, or Longest.
Type instead of speaking to Siri
1 Go to Settings/Accessibility/Siri, then turn on Type to Siri.
2 To make a request, activate Siri, then interact with Siri by using the keyboard and text field.
Control voice feedback for Siri
1 Go to Settings/Accessibility/Siri.
2 Choose Don't Speak in Silent Mode, Only Speak with Hey Siri, or Always Speak Responses.
Use "Hey Siri" when covered or face down
1 To allow your device to listen for "Hey Siri" when it's covered or facing down, go to Settings/Accessibility/Siri
2 Turn on Always Listen for "Hey Siri."
Hide apps when Siri is active
1 To hide the current app when you activate Siri, go to Settings/Accessibility/Siri
2 Turn off Show Apps Behind Siri.
Have Siri hang up phone and FaceTime calls
You can end a call by saying "Hey Siri, hang up." Participants on the call will hear you.
1 Go to Settings/Accessibility/Siri/Call Hangup
Turn on Call Hangup.