What is the primary benefit of enabling Find My on an Apple device?

Enabling Find My on an Apple device provides the primary benefit of locating lost or stolen devices. This feature uses GPS and network connections to pinpoint the device's location, allowing users to track their devices on a map. In addition to tracking, Find My can also help in protecting personal data by enabling users to remotely lock or erase their devices if they are lost or stolen. The capability to send a sound to the device can assist in finding it if it is nearby, making it an indispensable tool for device recovery.

While performing system diagnostics, speeding up the device, or sharing apps with friends might seem relevant to device functionality, they do not serve the essential purpose that Find My is designed for. Instead, Find My specifically addresses security concerns around losing or misplacing devices, making it a vital feature for Apple users concerned about device safety.