An electronic device (200, 1101) comprising: a display; a communication system; and a processor, configured to: connect, through the communication system via wireless communication, to a second electronic device which is controlled by the electronic device (200, 1101), identify a running application, identify a plurality of screens of the running application, determine a master screen and a slave screen among the plurality of screens (1113, 1115, 1117, 1119) of the running application, wherein the master screen is one of an initial screen which is displayed in executing the application, a predefined default screen of the running application, a last execution screen of a previous operation, or a screen selected by a user from the plurality of screens, and the slave screen is a screen subordinate to the master screen, characterized in that in response to an incoming call received from a third electronic device and related to the running application, control the display of the electronic device (200, 1101) to display an incoming call screen and transmit a call log screen and a contact screen as the slave screen to the second electronic device. a display; a communication system; and a processor, configured to: connect, through the communication system via wireless communication, to a second electronic device which is controlled by the electronic device (200, 1101), identify a running application, identify a plurality of screens of the running application, determine a master screen and a slave screen among the plurality of screens (1113, 1115, 1117, 1119) of the running application, wherein the master screen is one of an initial screen which is displayed in executing the application, a predefined default screen of the running application, a last execution screen of a previous operation, or a screen selected by a user from the plurality of screens, and the slave screen is a screen subordinate to the master screen, characterized in that in response to an incoming call received from a third electronic device and related to the running application, control the display of the electronic device (200, 1101) to display an incoming call screen and transmit a call log screen and a contact screen as the slave screen to the second electronic device. connect, through the communication system via wireless communication, to a second electronic device which is controlled by the electronic device (200, 1101), identify a running application, identify a plurality of screens of the running application, determine a master screen and a slave screen among the plurality of screens (1113, 1115, 1117, 1119) of the running application, wherein the master screen is one of an initial screen which is displayed in executing the application, a predefined default screen of the running application, a last execution screen of a previous operation, or a screen selected by a user from the plurality of screens, and the slave screen is a screen subordinate to the master screen, characterized in that in response to an incoming call received from a third electronic device and related to the running application, control the display of the electronic device (200, 1101) to display an incoming call screen and transmit a call log screen and a contact screen as the slave screen to the second electronic device.