Can we connect external Bluetooth Dongle in Android Tablet? For my survey I want to attach an external USB Bluetooth Dongle to an Android Tablet. Actually I want better range of the bluetooth, so I will use an antenna for the external bluetooth. I want to know :


Which Android version supports it?
Can an external Bluetooth work if the Tablet already has an internal Bluetooth ?
Any suggestion of Android Tablet in the market ?
If you are able to connect an external Bluetooth Dongle to the Android device, it ought to work for you, even with an intrnal Bluetooth present.   

Android devices with OS v3.1 and above shall support USB host capabilities. So, it is advisable to experiment with devices with the above operating systems. However, it will be on your end to make the dongle work for you; i.e. by creating a separate application for the same.