• On an iPhone with Face ID: Triple-click the side button. Or, if Accessibility Shortcut is turned on, press and hold the side button and either volume button until the sliders appear, then drag Emergency SOS.
• On an iPhone with a Home button: Triple-click the side button or Sleep/Wake button (depending on your model).

By default, iPhone plays a warning sound, starts a countdown, then calls the emergency services.

After the emergency call ends, iPhone alerts your emergency contacts that you made a call and sends them your current location (if available).