A mobile terminal of displaying data by individual SIM cards and a display method of sorting data according to individual SIM cards includes the steps of authenticating a SIM card that is inserted into the mobile terminal when the power is on by retrieving subscriber information stored in the SIM card and displaying data stored by the authenticated SIM card user in a different form than other data. When a mobile terminal is shared by a plurality of users, data may be displayed in different forms according to the SIM card inserted into the mobile terminal.