A communication apparatus includes a display input unit having a display screen and an input unit for receiving an operation relative to the display screen; a control unit configured to control the display input unit so that destination information of a transmission destination is obtained; and a communication unit configured to transmit data to a destination specified with the destination information. The control unit displays a first key correlated to one letter on the display screen. The control unit displays a text input screen on the display screen so that the control unit receives an operation of inputting one letter when the control unit receives an operation of specifying the first key. The control unit obtains a text string formed of the one letter correlated to the first key thus specified and the one letter thus input as the destination information.