A mobile terminal including a bar-type terminal body having a front side and a rear side; a mobile communication module transmitting and receiving a wireless signal; a touch screen disposed at the front side of the bar-type terminal body, the touch screen including a display module for displaying information and a front touch sensor for sensing a front touch input; a battery disposed in the bar-type terminal body; a cover disposed at the rear side of the bar-type terminal body and covering the battery, the cover having a first through hole and a second through hole; a front camera disposed at the front side of the bar-type terminal body; a rear camera disposed in the first through hole of the cover at the rear side of the bar-type terminal body; a rear input unit provided at the rear side of the bar-type terminal body, the rear input unit including a button member disposed at the second through hole of the cover and a rear touch sensor for sensing a rear touch input applied to the button member; one or more processors; and a memory storing one or more programs configured to be executed by the one or more processors. Further, the front side of the bar-type terminal body is absent any manipulation button for inputting a control command except for the touch screen; wherein a position of the rear input unit is overlapped with a position of the touch screen and is disposed laterally between the rear camera and the battery; wherein in response to receiving the rear touch input via the rear input unit, the one or more processors process the rear touch input as a control command for different functions according to information output to the touch screen; wherein a first function of the different functions releases a locked state of the mobile terminal in response to a first rear touch input applied to the rear touch sensor in a first state that a lock screen is displayed on the touch screen; wherein a second function of the different functions connects an incoming call in response to a second rear touch input applied to the rear touch sensor in a second state that the incoming call is received on the mobile terminal; and wherein a third function of the different functions captures an image through at least one of the front camera and the rear camera in response to a third rear touch input applied to the rear touch sensor in a third state that a camera preview is displayed on the touch screen.