An information terminal having a touch screen on which an instruction is input by touching the screen and the result of executing the instruction is displayed includes: a voice recognition and learning unit for recognizing an input voice signal; and a system controller which when a predetermined item on the touch screen is touched, recognizes an instruction corresponding to the coordinates of the touched item, and which when a voice corresponding to a sub-instruction associated with the recognized instruction is recognized by the voice recognition and learning unit, executes the corresponding sub-instruction. If a currently input voice does not correspond to an instruction to be executed, the information terminal stores the fact that the currently input voice is a voice instruction for the instruction to be executed.