A flexible portable device including a display unit for displaying an image, a communication unit for performing communication with an external device, a sensor unit for sensing user input or an environment of the flexible portable device, and a control unit for controlling the flexible portable device and the units of the flexible portable device. Further, the sensor unit includes a motion sensor unit for sensing motion of the flexible portable device and/or motion with respect to the flexible portable device, the flexible portable device has at least one flexible area which is bendable, and the motion sensor unit is located at a first area at which influence on the motion sensor unit when the flexible area is bent is avoided or minimized.