A portable telephone and display method of data thereof

PURPOSE: A mobile phone and a data display method are provided to display data according to a select input type on a display window as divided according to selection of a window dividing function while a user is writing a character message. CONSTITUTION: When a user selects a character message function to transmit a character message, a controller displays a transmission character message created by the user on one input display window(310). The controller judges whether a reception character message and a call setup request have been received from an external wireless communication network or whether the user has selected a window dividing function, and if the user selects the window dividing function, the controller discriminates a selection input type(320). The controller divides the display window into two section, and displays the transmission character message being created in one section and a data corresponding to a selection input type in another section of the display window.