How to turn on Crash Detection on your Apple iPhone 15

Press Settings.

Press Emergency SOS.

Press the indicator next to 'Call After Serious Crash' to turn on the function.

Press Set up Emergency Contacts in Health and follow the instructions on the screen to key in your emergency info and emergency contacts.

If you've added emergency contacts, they will automatically be notified if you've been in a severe car crash. If you add your emergency info, it will be displayed on your phone's lock screen.

Slide your finger upwards starting from the bottom of the screen to return to the home screen.