FIELD: radio engineering and communications.
SUBSTANCE: according to the disclosed invention, a mobile device which performs a call with an external mobile device comprises a control unit configured to receive text, wherein the text is converted from voice data, which are exchanged between mobile device and external mobile device, during call between mobile device and external mobile device, and obtaining input text, which is introduced into mobile device, and provided text, which is received from external mobile device; and a display unit configured to place text, input text and provided text and display arranged text, input text and provided text on a device screen during a call between a mobile device and an external mobile device.
EFFECT: design of a technology which enables a user to use a voice call service and a text messaging service in combination, or to efficiently switch and use a voice call service and a text messaging service.
30 cl, 57 dwg
