At least on Apple's side (Find my iPhone), the owner can mark the device as lost [0], which will lock it and display a custom message on the lock screen. But a

At least on Apple's side (Find my iPhone), the owner can mark the device as lost [0], which will lock it and display a custom message on the lock screen. But a "pull" solution where a finder of the phone can contact the owner would be nice. [0]: https://support.apple.com/library/content/dam/edam/applecare/images/en_US/appleid/ios13-iphone-xs-lost-mode.jpg https://support.apple.com/library/content/dam/edam/applecare...