To set options for Siri, go to Settings > General > Siri. Options include:

  • Turning Siri on or off

  • Language

  • Voice gender (may not be available in all areas)

  • Voice feedback

  • My Info card

  • Raise to speak

  • Prevent access to Siri when iPhone is locked. Go to Settings > Touch ID & Passcode (iPhone 5s) or Settings > Passcode (other models). You can also disable Siri by turning on restrictions. See Restrictions.