A terminal comprising: a wireless communication unit configured to execute a first conversation with at least one correspondent party using an instant messaging service; a memory configured to store contents of a plurality of previous conversations including the first conversation; a touch screen configured to display a list of the plurality of the previous conversations after the first conversation is terminated; characterized by a controller configured to: receive, via the touch screen, a first selection signal to select the first conversation from the list of the plurality of the previous conversations; in response to the first selection signal, display stored contents of the first conversation, wherein the stored contents of the first conversation are displayed together with file transceiving state information indicating if a file transceiving was in progress during the first conversation, control the wireless communication unit to execute a second conversation with the at least one correspondent party of the first conversation using the stored contents of the first conversation according to a second selection signal, wherein the stored contents of the first conversation is included in contents of the second conversation, receive, via the touch screen, a third selection signal to select a file transmission option displayed together with the stored contents of the first conversation, and in response to the third selection signal, restart the file transceiving with the at least one correspondent party. a wireless communication unit configured to execute a first conversation with at least one correspondent party using an instant messaging service; a memory configured to store contents of a plurality of previous conversations including the first conversation; a touch screen configured to display a list of the plurality of the previous conversations after the first conversation is terminated; characterized by a controller configured to: receive, via the touch screen, a first selection signal to select the first conversation from the list of the plurality of the previous conversations; in response to the first selection signal, display stored contents of the first conversation, wherein the stored contents of the first conversation are displayed together with file transceiving state information indicating if a file transceiving was in progress during the first conversation, control the wireless communication unit to execute a second conversation with the at least one correspondent party of the first conversation using the stored contents of the first conversation according to a second selection signal, wherein the stored contents of the first conversation is included in contents of the second conversation, receive, via the touch screen, a third selection signal to select a file transmission option displayed together with the stored contents of the first conversation, and in response to the third selection signal, restart the file transceiving with the at least one correspondent party. receive, via the touch screen, a first selection signal to select the first conversation from the list of the plurality of the previous conversations; in response to the first selection signal, display stored contents of the first conversation, wherein the stored contents of the first conversation are displayed together with file transceiving state information indicating if a file transceiving was in progress during the first conversation, control the wireless communication unit to execute a second conversation with the at least one correspondent party of the first conversation using the stored contents of the first conversation according to a second selection signal, wherein the stored contents of the first conversation is included in contents of the second conversation, receive, via the touch screen, a third selection signal to select a file transmission option displayed together with the stored contents of the first conversation, and in response to the third selection signal, restart the file transceiving with the at least one correspondent party.