To determine which version of the Android OS (Operating System) your device is running:
From the home screen, press the Settings Button;
Then select the Settings option;
Scroll down and select About Phone;
Scroll down to Android Version;
The number under the heading is the version number of the Android OS on your device.
Tractivity requires the device to be running Android 4.3 (Jellybean) or newer.
To determine which version of Bluetooth you device is equipped with:
Search the website of the device manufacturer (e.g. Samsung) for the model number of your device, and look for information about which version of Bluetooth it contains.
Or contact your service provider to inquire.