I'm helping a friend who has just acquired an iPad Mini with a Bluetooth keyboard attached. However the on-screen keyboard keeps popping up and getting in the way of whatever I'm trying to do. If I touch the button near the bottom RH corner to get it to disappear, it generally does, but then it usually reappears a few moments later. At first I thought it may be caused by the physical keyboard's battery not being fully charged, so I've recharged it, but the problem remains. How can I get iOS to keep the on-screen keyboard out of the way whenever the Bluetooth keyboard is connected? The system is recognising the external keyboard, so I am able to use it.