A portable electronic device comprises a double-sided display including a first display side and a second display side formed on a side opposite the first display side; a direct memory access (DMA) controller configured to read first image data from a memory; at least one sensor configured to detect at least one of a position change of the double-sided display and a movement of a user's pupil and to output a detection signal; a status signal generator configured to interpret the detection signal output and to output a status signal; a transmission order determiner configured to receive the first image data from the DMA controller, to determine a transmission order of the first image data based on the status signal, and to output second image data corresponding to the determined transmission order; and a display driver integrated circuit (IC) configured to transmit the second image data to the display.