A method of processing data in a first mobile terminal, and which includes registering, via a controller of the first mobile terminal, a second mobile terminal as a master device and the first terminal as a slave device; storing, via a memory associated with the first mobile terminal, status information indicating previous success or non-success of receiving a positive response from the second mobile terminal for a request to activate an application on the first mobile terminal; transmitting, via a wireless communication unit of the first mobile terminal, an application activation request signal to the second mobile terminal based on the stored status information; receiving, via the wireless communication unit, a response signal corresponding to the application activation request signal from the second mobile terminal; and activating, via the controller, the application in response to the received response signal.