Bluetooth getting switched on automatically

[neku]

I have switched off Bluetooth on my laptop and smartphone at night to prevent hacking. However , I am finding that Bluetooth is switched on automatically on the smartphone, laptop after some time. How to prevent the bluetooth from getting switched on?

 

[eLdavis]

Have never experienced this before though. Once you switch off your Bluetooth, it should remain switched off until you choose to on it back. It could be a malfunction or something.