Fonegard is a mobile app that helps protect Android phones from theft. It detects when a phone is disconnected from a paired Bluetooth device, triggering a loud alarm and flashing camera to alert the owner. To use it, users turn on their Bluetooth, pair their phone to the device, open the Fonegard app, and press "Start" when in areas prone to theft. To disable it, they open the app again and press "Stop" when in safe areas.