Provided is a mobile phone including: a transceiver for receiving voice and data signals from outside; a voice processing part for demodulating the voice signal input from the transceiver and outputting the voice signal as a voice, and modulating a voice received from outside and converting the voice into a voice signal; a control part for processing the voice signal and the data signal received from the transceiver; a display part controlled by the control part to display a vector graphic; a memory for storing an operating program of the control part and a system program; a vector graphic processing part for producing and modulating a vector graphic in response to control of the control part and outputting the vector graphic to the display part; and a button including an input part for transmitting an input from outside to the control part, the input part performing the function of connecting to a wireless Internet service when pressed and controlling the size of the vector graphic when rolled.