1. A mobile communication terminal comprising: a short message interpretation unit which extracts a phone number of a sender of a short message from a header of the short message; a short message processing unit which obtains an image which is mapped to the phone number and generate a screen on which the image is combined with text of the short message; a mapping unit which maps the phone number and the image of the sender; a storage unit which stores the phone number and the image of the sender; and an output unit which outputs the screen to be displayed.