Getting medical ID from a locked phone
I use FaceID for logging in, so there's no Emergency button on the screen. How would one get my medical ID without logging into the phone?
Question marked as
Press and hold the side button (power) and one of the volume buttons. You should then see the slider for Medical ID as well as Emergency as long as you selected Show When Locked (and Show During Emergency Call) when setting up your Medical ID in the Health app.
Set up your Medical ID in the Health app on your iPhone - Apple Support
