The present invention provides a portable communication terminal that allows users to use only basic functions without having to peruse an instruction manual.The basic module (21) of a memory device (2) includes a simple-mode basic module (211) that shows a GUI mode customized to be user friendly, and a custom-mode basic module (212) that shows a GUI mode for letting the user select only desired functions at the time of initial activation. If the “simple-mode” is selected through the basic module (21), the menu display screen of an output device (3) displays only the function menu of the simple-mode basic module (211). If the “custom-mode” is selected through the basic module (21), the menu display screen of the output device (3) displays the function menu of the custom-mode basic module (212) and functions selected through the custom-mode basic module (212).