Downlaod the App and copy the .apk file to your Android smartphone. Then enable unknown origin apps to be able to install on your phone. Install the app. Enable Bluetooth on your phone and search for devices. Turn on the matrix. Select the HC06 module and pair with 1234 or 0000 password. Then open the app, click the Bluetooth icon and select the HC06 module. Now you can send text or select modes.