title: Android Bluetooth LE and Classic Bluetooth API
body: <p>I am writing an App to be able to connect to Bluetooth LE devices and old classic Bluetooth devices.
  In Android OS 4.3, different API is used for LE and classic.</p>
  
  <p>How can I auto-detect to know that the devices that I connected to are Bluetooth LE devices or classic Bluetooth devices so that I can choose the correct API to connect?</p>