Disconnect a Bluetooth device
If you do not want to be connected to a Bluetooth device anymore, you can remove the connection. This is useful if you no longer want to use a device like a mouse or headset, or if you no longer wish to transfer files to or from a device.
Open the Activities overview and start typing Bluetooth.
Click on Bluetooth to open the panel.
Select the device which you want to disconnect from the list.
In the device dialog box, switch the Connection switch to off, or to remove the device from the Devices list, click Remove Device.
You canlater if desired.