How to enable Bluetooth in Kali Linux

check that bluetooth is installed by running this command

aptitude install bluetooth

I am pretty sure it is installed but....

Next check that the daemon is running

/etc/init.d/bluetooth status

if not replace the word status with start to start (stop will stop the daemon)

Then click on Applications in the upper right of the desktop, and from there
go to System Tools -> Preferences -> Main Menu

In the new window that opens, click into Other and click in the check box on the left of the window to "show" Bluetooth Device Setup.

Close the window

NOW

Click the Applications icon again -> Other and you should now see the Bluetooth Device Setup.
From there it should be simple to pair the device.

Hope this helps!