A graphical user interface is generated at a mobile communication terminal having a first touch screen of a first size, the graphical user interface including one or more touch screen input options. The generated graphical user interface is transmitted from the mobile communication terminal and to a vehicle communication terminal having a second touch screen of a second size. An indication of touch screen input received at the second touch screen of the vehicle communication terminal is received at the mobile communication terminal and from the vehicle communication terminal. A function corresponding to the touch screen input received at the second touch screen of the vehicle communication terminal is executed at the mobile communication terminal.