A method for a portable device having a touch screen display, the method comprising: displaying, in full mode, an original screen on the touch screen display, the original screen comprising one or more icons, wherein, when one of the icons is selected, a corresponding function is performed; when an input event for entering mini-mode is received, displaying a mini-mode screen on the touch-screen display, the mini-mode screen comprising a reduced version of the original screen, the reduced version of the original screen comprising one or more reduced version icons corresponding to the one or more icons, wherein the input event comprises a preset dragging touch gesture performed in a vicinity of an edge of the original screen and which satisfies a determined movement speed limit; when an input event for selecting at least one reduced version icon on the mini-mode screen is detected, performing a function corresponding to the selected at least one reduced version icon; and when an input event for changing size of the mini-mode screen is detected, allowing the mini-mode screen to be changeable in size by an input event subsequent to the input event for changing size, characterized in that the mini-mode screen comprises at least one icon outside of the reduced version of the original screen, and wherein a relative position of the at least one icon outside of the reduced version of the original screen with respect to the mini-mode screen is dependent on a location of the mini-mode screen with respect to the touch screen display, and when the mini-mode screen is located on a right of the touch screen display, the at least one icon outside of the reduced version of the original screen are positioned one by one from the right to the left, and when the mini-mode screen is located on a left side of the touch screen display, the at least one icon outside of the reduced version of the original screen are positioned one by one from the left to the right. displaying, in full mode, an original screen on the touch screen display, the original screen comprising one or more icons, wherein, when one of the icons is selected, a corresponding function is performed; when an input event for entering mini-mode is received, displaying a mini-mode screen on the touch-screen display, the mini-mode screen comprising a reduced version of the original screen, the reduced version of the original screen comprising one or more reduced version icons corresponding to the one or more icons, wherein the input event comprises a preset dragging touch gesture performed in a vicinity of an edge of the original screen and which satisfies a determined movement speed limit; when an input event for selecting at least one reduced version icon on the mini-mode screen is detected, performing a function corresponding to the selected at least one reduced version icon; and when an input event for changing size of the mini-mode screen is detected, allowing the mini-mode screen to be changeable in size by an input event subsequent to the input event for changing size, characterized in that the mini-mode screen comprises at least one icon outside of the reduced version of the original screen, and wherein a relative position of the at least one icon outside of the reduced version of the original screen with respect to the mini-mode screen is dependent on a location of the mini-mode screen with respect to the touch screen display, and when the mini-mode screen is located on a right of the touch screen display, the at least one icon outside of the reduced version of the original screen are positioned one by one from the right to the left, and when the mini-mode screen is located on a left side of the touch screen display, the at least one icon outside of the reduced version of the original screen are positioned one by one from the left to the right.