For better security, set a passcode that needs to be entered to unlock iPhone when you turn it on or wake it. Setting a passcode also turns on data protection, which encrypts your iPhone data with 256-bit AES encryption. (Some apps may opt out of using data protection.)
Go to Settings Use Emergency SOS).
An attempt to view your Medical ID is initiated (see restore your device from a backup. If you didn’t back up your iPhone, you need to Set up Face ID on iPhoneSet up Touch ID on iPhone