Final answer:
The best feature for recovering a lost mobile device is a Locator application, as it helps track the device's real-time location using GPS and internet connectivity, aiding in its recovery.
Step-by-step explanation:
The best feature to use for recovering a lost mobile device is a Locator application. A locator app helps you track the real-time location of your mobile device through GPS and internet connectivity. If your device is lost or stolen, you can access the locator service through another device or a computer to find your mobile device's current location. This is usually the most immediate step you can take to recover a lost device.
While a Remote backup application is useful for saving your data, it does not help locate the device. Remote wipe is a security feature that allows you to erase your data remotely in case your device is stolen, preventing unauthorized access to your information. An RFID chip can only be helpful in tracking if it is in range of an RFID reader, which is not practical for most lost or stolen devices scenarios.