it's very straight forward. add the toggle button to your pull-down menu icons too. it would be good though if the phone was listening for usb devices all the time like you would normally expect on pc's
My xperia z5 compact does not react to the mouse I attach through the otg. I am afraid there is some check box waiting to be checked. Now that I know it, I should've done it before my display cracked and my touchsreen got damaged. Any help for me out there?