Which of the following can be used to help recover a lost smartphone?

Remote support software is designed to allow a technician to control a device for troubleshooting purposes and does not provide geographic location tracking for physical recovery.

Locator applications such as Find My Device (Android) or Find My (iOS) use the device's GPS, Wi-Fi, and cellular data to report its real-time geographic location to the owner, enabling recovery of a lost or stolen smartphone.

NFC (Near Field Communication) only functions at ranges of a few centimeters and cannot be used to locate a device that is not in immediate physical proximity.

GPS navigation software uses GPS to provide turn-by-turn directions for the user of the device, not to track or report the device's location to an external party for recovery.