1 From the keyboard: 2  How to enable the virtual keyboard on Acer Iconia. 3  Press Fn + F3 to display Device Control. 4  From the Acer Ring: 5  Close the virtual keyboard. 6  Place five fingers at once on the bottom screen and the Acer Ring appears.7  Tap the Device Control icon to open the application.ou can enable the Device Control panel from the virtual keyboard or from the Acer Ring. 1  From the keyboard: 2  How to enable the virtual keyboard on Acer Iconia. 3  Press Fn + F3 to display Device Control.