Methods, apparatuses, and systems for processing multi-touch input in a multi-tasking terminal with a touch screen are described. In one method herein, an electronic apparatus displays a first application program on its touch screen while both the first application program and a second application program are being multitasked, detects a flicking of four or more fingers in the displayed first application program on the touch screen; and, in response to detecting of the flicking of four or more fingers, switches the touch screen from the display of the first application program to a display of the second application program.