A mobile information communication apparatus includes a data processing device for sending plotting command/data to a display control device that controls the pixels of a display panel belonging to the mobile information communication apparatus. An interface device is provided which receives the plotting command/data generated by the data processing device and sends, based on plotting command/data, an external display signal to the external display device. The data processing device and the interface device are configured to send, from the interface device, a higher-resolution external display signal.