Somebody calling himself bamf-hacker in an online forum has claimed that there is a trick to use Siri to access Bluetooth and other settings by using your voice.
Following is the procedure to make this fantasy come alive:
1. Create a contact and in the Website field and put the code for system preference. For example, you add contact name as “Bluetooth”. You add the web-address as “prefs:root=General&path=Bluetooth”.
2. After adding these details, you should activate Siri and say, “Bluetooth”. The contact card will open. There would be a link that can be clicked, right to the Bluetooth Settings.
So now one can use Blutooth through Siri.