Open the Find My app on another Apple device
Sign in with your Apple ID
Tap Devices
Select your iPhone from the list
View its location on the map
Tap Play Sound to help find it nearby
Tap Directions to get navigation to it
If it is offline, check its last known location
Use Find My on iCloud.com if you do not have another Apple device
Go to iCloud.com/find
Sign in with your Apple ID
Select your iPhone
Enable Lost Mode if needed
Contact your carrier if the iPhone is lost or stolen