1. Open the Health application and click the Summary tab.
2. Tap the personal portrait in the upper right corner.
3. Under your personal portrait, tap "Medical Emergency Card".
4. Click "Edit" in the upper right corner.
5. In order to allow the medical emergency card to be viewed on the lock screen of iPhone, please turn on "Show when locked". In an emergency, this function can provide information to people who want to lend a helping hand. To share your medical emergency card with emergency personnel, please turn on "Share during emergency call". When you call or send a message to an emergency service agency on iPhone or Apple Watch, your medical emergency card will be automatically * * * shared with the emergency service agency *.
6. Enter health information, such as your date of birth, allergies and blood type. Click "Finish".