Lost Mode

Lost Mode is a feature of the Find My software and service developed and operated by Apple to help users identify and find lost or stolen Apple devices, such as supported iPads, iPhones, iPod touches, Macs, Apple Watches, AirPods, and AirTags.

Usage
A user can log into the Find My app or iCloud account with their Apple ID to locate their lost Apple device, play a sound to help locate it, display a lost message with return contact information, or in some cases erase it.