projection manipulation unit 122 but also with the portable terminal a second user input unit 117 may be arranged on at least one of the front case 111 and the rear case 112 such as on the side of at least one of the front case and the rear case the first user input unit 133 may be used to input commands such as start end scroll or other input commands known in the art and the second user input unit 117 may serve as hot keys for performing specific functions such as activation of the first image input unit 115 the display unit 113 may be configured to display numbers characters symbols or the like an audio input unit 134 for inputting a user 39 s voice or various sounds may be disposed at the cover 130 the audio input unit 134 may be implemented as a microphone referring to fig2 a second image input unit 141 may be mounted to a rear surface of the rear case 112 the second image input unit 141 faces a direction which is opposite to a direction faced by the first image input unit 115 fig1 and may have a pixel density that is the same or different from that of the first image input unit 115 for example the first image input unit 115 may operate with a relatively lower pixel density lower resolution thus the first image input unit 115 may be useful when a user can capture an image of their face and send it to a calling party in.