The application sets up the parameters of the VALTRACK-V2 GPS tracker using Bluetooth present on the SIM800 module. It uses the SPP protocol to set the parameters.

Press and hold the SOS button on the VALTRACK-V2 to enable and enter bluetooth parameter setting mode. When the mode is entered the LED blinks thrice indicating that you can release the button now.

Search and connect to the device using the three dots button present on the top right corner of the App screen. There search and connect to the device like any other bluetooth device. Once connected the App will show as SIM800C: Connected.

The LED will keep blinking every second indicating that the device is connected.

Then enter the parameters,
WorkingMode,MotionAlertMode
HTTPURL
PingInterval

WorkingMode: 0 = SMS tracking mode
WorkingMode: 1 = TCP tracking mode
WorkingMode: 2 = HTTP tracking mode

MotioAlertMode: 0 = Motion Alert disabled
MotioAlertMode: 1 = SMS alert mode
MotioAlertMode: 2 = Call alert mode

Then press send to device. The device will send its current saved settings every 10 seconds in below ListView. Use it as confirmation that the data is set correctly as you intended.

When setup complete Press the SOS button again to come out of setup. The LED will turn off as a indication of setup complete.