The following App you can freely download to install and pair-up on your smartphone: "MedM health" or "MedM weight".
Install the app on your smartphone, turn on Bluetooth and App. Make sure both are ON when pair-up is proceeding.
Press and hold "UNIT" button in the back of the scale to start pair-up.
But please take note it is only available for devices which support Bluetooth 4.0 technology.