Matrack device app scans for Matrack device via BLE, connects to Matrack device using BLE and displays the values. It is used for troubleshooting the Matrack device.  Matrack device is connected to trucks via J1939 cable or OBDii and reads the values in ECM including vin, ignition state, speed, odometer and engine hours. After BLE connection, app screen refreshes periodically to update values.

Features:
- BLE scan and connect to Matrack device.
- Display ECU values including vin, odometer, ignition state, speed, engine hours
- Periodically refresh the screen to display latest value.
- Update Matrack device firmware.
- Send troubleshooting data to Matrack server
- Receive troubleshooting commands via push notification