A mobile device that performs a call with an external mobile device, the mobile device comprising: a display unit; and a control unit configured to: execute an application for performing the call with the external mobile device, while the call is performed with the external mobile device, control to obtain, through the application for performing the call, text generated based on voice data that is exchanged between the mobile device and the external mobile device, input text input to the mobile device, and provided text that is received from the external mobile device, and while the call is performed with the external mobile device, control to display, through the application for performing the call, the text generated based on the voice data, the input text input to the mobile device, and the provided text that is received from the external mobile device on the display unit of the mobile device, wherein the text generated based on the voice data comprises text generated based on voice data sent towards the external mobile device from the mobile device and text generated based on voice data received, by the mobile device, from the external mobile device, and wherein the voice data received, by the mobile device, is provided through the application for performing the call at the mobile device. a display unit; and a control unit configured to: execute an application for performing the call with the external mobile device, while the call is performed with the external mobile device, control to obtain, through the application for performing the call, text generated based on voice data that is exchanged between the mobile device and the external mobile device, input text input to the mobile device, and provided text that is received from the external mobile device, and while the call is performed with the external mobile device, control to display, through the application for performing the call, the text generated based on the voice data, the input text input to the mobile device, and the provided text that is received from the external mobile device on the display unit of the mobile device, execute an application for performing the call with the external mobile device, while the call is performed with the external mobile device, control to obtain, through the application for performing the call, text generated based on voice data that is exchanged between the mobile device and the external mobile device, input text input to the mobile device, and provided text that is received from the external mobile device, and while the call is performed with the external mobile device, control to display, through the application for performing the call, the text generated based on the voice data, the input text input to the mobile device, and the provided text that is received from the external mobile device on the display unit of the mobile device, wherein the text generated based on the voice data comprises text generated based on voice data sent towards the external mobile device from the mobile device and text generated based on voice data received, by the mobile device, from the external mobile device, and wherein the voice data received, by the mobile device, is provided through the application for performing the call at the mobile device.