A method of operating a mobile communication device, the method comprising: establishing a video telephony call between a first user and at least a second user; displaying a first display window including a first image data of the first user and a second display window including a second image data of the second user on the mobile communication device, said first and second image data being transmitted/received through the video telephony call; displaying a chatting window on the mobile communication device when a video chatting service is selected such that the first and second users can perform a chatting operation in the chatting window; providing a menu for selecting at least one data to be stored along with chatting data displayed in the chatting window when a storage of a video chatting log is selected, the menu comprising an item for selecting the first image data of the first user, an item for selecting a first voice data of the first user, an item for selecting the second image data of the second user and an item for selecting a second voice data of the second user; selecting at least one image data to be stored along with the chatting data in response to a touch and drag input (496, 497), wherein the touch and drag input is an input touching at least one of the first and second display windows and dragging it to the chatting window; linking the chatting data displayed in the chatting window with the selected at least one image data; and storing the linked chatting data as the video chatting log, the video chatting log comprising synchronization information for synchronizing the chatting data and the at least one data linked along with the chatting data. establishing a video telephony call between a first user and at least a second user; displaying a first display window including a first image data of the first user and a second display window including a second image data of the second user on the mobile communication device, said first and second image data being transmitted/received through the video telephony call; displaying a chatting window on the mobile communication device when a video chatting service is selected such that the first and second users can perform a chatting operation in the chatting window; providing a menu for selecting at least one data to be stored along with chatting data displayed in the chatting window when a storage of a video chatting log is selected, the menu comprising an item for selecting the first image data of the first user, an item for selecting a first voice data of the first user, an item for selecting the second image data of the second user and an item for selecting a second voice data of the second user; selecting at least one image data to be stored along with the chatting data in response to a touch and drag input (496, 497), wherein the touch and drag input is an input touching at least one of the first and second display windows and dragging it to the chatting window; linking the chatting data displayed in the chatting window with the selected at least one image data; and storing the linked chatting data as the video chatting log, the video chatting log comprising synchronization information for synchronizing the chatting data and the at least one data linked along with the chatting data.