Using mirror mode, you will see the same content on the Android device and HUION pen displays. If the Android device is placed in a horizontal orientation, the screen automatically adapts to full display on HUION pen displays with certain edge area not working due to the screen ratio.
If the Android device is placed in vertical orientation, HUION pen displays will be limited to the same screen size of the Android device.
Under projection mode, HUION pen displays work as a 2nd display much like a computer. Orientation of the Android device will not influence of what you will see on HUION pen displays. See “Connecting my pen display, Android is only using a portion of the pen display area …”.