What emergency contact does on your iPhone

An emergency contact on your iPhone is information that appears on your lock screen when someone holds down the power button during an emergency. It shows your name, any medical conditions or allergies you've entered, and the phone numbers of people you've designated as emergency contacts. First responders and bystanders can see this information without unlocking your phone — they don't need your passcode or Face ID.

This setup takes about five minutes and lives in the Health app, not in your regular Contacts. The information syncs across your devices if you use iCloud, so it updates automatically on your iPad or Apple Watch too.

Key Takeaways

  • Emergency contact information appears on your lock screen when someone presses and holds the power button, visible without unlocking your phone.
  • You set this up in the Health app under your Medical ID, not in the Contacts app.
  • You can add up to five emergency contacts with their phone numbers and relationships to you.
  • Medical details like allergies, blood type, and current medications are optional but visible to first responders.
  • The information syncs to your iPad and Apple Watch if you use the same Apple ID.

Opening the Health app and creating your Medical ID

Open the Health app on your iPhone — it's the white app with a red heart. Tap the profile icon in the top right corner (it looks like a person's silhouette). Scroll down and tap "Medical ID."

If you've never set this up, you'll see a button that says "Create Medical ID." Tap it. If you already have one, you'll see an "Edit" button instead — tap that to add or change emergency contacts.

Adding your emergency contacts

Once you're in the Medical ID screen, scroll down to the "Emergency Contacts" section. Tap "Add Emergency Contact." A menu will appear asking you to choose a contact from your phone's address book and select their relationship to you — options include "Family," "Friend," "Doctor," "Other," and several family-specific roles like "Mother" or "Sibling."

Select the person's name from your contacts, then choose their relationship. Their phone number will pull in automatically from your contacts list. Repeat this process for up to five people. You don't have to fill all five slots — add only the people you want first responders to call.

Adding medical information that appears on your lock screen

In the same Medical ID screen, you can add optional medical details that will show on your lock screen. These sections include Date of Birth, Blood Type, Allergies, Medications, Medical Conditions, Organ Donor status, and Notes. Fill in only what's relevant to you.

For example, if you have a severe peanut allergy, add it under "Allergies." If you take insulin, list it under "Medications." If you have a heart condition, add it under "Medical Conditions." First responders can see all of this without unlocking your phone, so include anything that could affect emergency treatment.

Checking what appears on your lock screen

After you save your Medical ID, lock your iPhone and press and hold the power button (or volume up button on older models) until you see the emergency call screen. You'll see a "Medical ID" button at the bottom left. Tap it to see exactly what information will be visible to someone who finds your phone.

This preview shows you what a first responder or bystander will see. If something is missing or incorrect, go back into the Health app, tap your profile icon, select "Medical ID," and tap "Edit" to make changes.

Keeping your emergency contacts current

If someone's phone number changes or you want to add a different person, open the Health app, tap your profile icon, select "Medical ID," and tap "Edit." You can change, add, or remove emergency contacts at any time. The changes save automatically.

If you get a new iPhone, your Medical ID transfers automatically if you sign in with the same Apple ID and restore from your iCloud backup. If you set up your new phone as a fresh device, you'll need to recreate your Medical ID in the Health app.

What happens if you don't set up emergency contact

Without a Medical ID, someone who finds your phone can still call emergency services by tapping "Emergency SOS" on the lock screen, but they won't know your name, any medical conditions, or who to contact on your behalf. First responders will have no way to reach your family or know about allergies or medications that could affect treatment.

Setting up emergency contact takes a few minutes and could make a real difference in how quickly the right people are notified and how accurately you're treated in an emergency.

Frequently Asked Questions

Can someone call my emergency contacts without unlocking my phone?

No. They can see the phone numbers and names of your emergency contacts on the Medical ID screen, but they have to manually dial the number themselves. The phone doesn't auto-call anyone.

What if I don't want certain information visible on my lock screen?

You control what appears. Leave sections blank if you don't want them shown. For example, you can add emergency contacts but skip the medical details, or add blood type but not medications. Only the information you enter will display.

Does my emergency contact information sync to my Apple Watch?

Yes, if your Apple Watch is paired with your iPhone and you use the same Apple ID. The Medical ID appears on your watch's lock screen the same way it does on your phone.

Can I edit my Medical ID from my iPad?

Yes. Open the Health app on your iPad, tap your profile icon, and select "Medical ID." Any changes you make sync back to your iPhone automatically through iCloud.

What if I change my mind and want to delete my Medical ID?

Open the Health app, tap your profile icon, select "Medical ID," tap "Edit," scroll to the bottom, and tap "Delete Medical ID." You can recreate it anytime by following the same steps from the beginning.