How to Set up Find My iPhone

1. Start at your Home screen.
2. Tap Settings > [your name] > iCloud. If you’re using iOS 10.2 or earlier, go to Settings > iCloud.
3. Scroll to the bottom and tap Find My iPhone.
4. Slide to turn on Find My iPhone and Send Last Location.

If you’re asked to sign in, enter your Apple ID. If you forgot your Apple ID, just check here to find it.