Locate a family member’s missing device on iPhone
When you’re in a Family Sharing group and family members share their locations with you, you can use the Find My app on your iPhone, iPad, iPod touch, or on iCloud.com on a computer to help another family member find a lost device.
Set up your device to be found by a family member
A family member can help locate your missing device if you do the following on the device before it’s lost:
Turn on Location Services: Go to Settings > Privacy, then turn on Location Services.
Turn on Find My iPhone: Go to Settings > [your name] > Find My > Find My iPhone, then turn on Find My iPhone, Enable Offline Finding, and Send Last Location.
Share your location with family members: Go to Settings > [your name] > Family Sharing > Location Sharing, then turn on Share My Location.
Locate a family member’s device
Open Find My on your iPhone, iPad, or iPod touch, or open Find My iPhone on iCloud.com on a computer.
Sign in with your Apple ID.
In the list of devices, select the one you want to find.
Your devices are at the top of the list, and your family members’ devices are below yours.
The selected device appears on a map so you can see where it is.