A mobile terminal comprising: a display configured to display information; a short range communication module configured to exchange a signal with an external control device; and a controller configured to: receive the signal from the external control device, determine a context at a timing point of receiving the signal, and control an operation corresponding to the signal to be performed in the determined context, characterized in that the operation includes an activation or deactivation of a lock mode of the mobile terminal and a sound output for indicating the mobile terminal's location; wherein the lock mode is entered, if a distance between the mobile terminal and the external control device deviates by exceeding a threshold distance; and wherein the lock mode is cancellable by an input for mode cancellation after the lock mode has been entered in response to the deviation from the threshold distance, and the lock mode is automatically cancellable without the input for mode cancellation, if the distance between the mobile terminal and the external control device becomes equal to or smaller than the threshold distance, wherein the controller is further configured to control the display to display a confirmation button while performing the sound output based on a strength of the signal, wherein the sound output stops if a signal corresponding to a manipulation of the external control device is received via the short range communication module even though the confirmation button is not touched via the display of the mobile terminal. a display configured to display information; a short range communication module configured to exchange a signal with an external control device; and a controller configured to: receive the signal from the external control device, determine a context at a timing point of receiving the signal, and control an operation corresponding to the signal to be performed in the determined context, receive the signal from the external control device, determine a context at a timing point of receiving the signal, and control an operation corresponding to the signal to be performed in the determined context, characterized in that the operation includes an activation or deactivation of a lock mode of the mobile terminal and a sound output for indicating the mobile terminal's location; wherein the lock mode is entered, if a distance between the mobile terminal and the external control device deviates by exceeding a threshold distance; and wherein the lock mode is cancellable by an input for mode cancellation after the lock mode has been entered in response to the deviation from the threshold distance, and the lock mode is automatically cancellable without the input for mode cancellation, if the distance between the mobile terminal and the external control device becomes equal to or smaller than the threshold distance, wherein the controller is further configured to control the display to display a confirmation button while performing the sound output based on a strength of the signal, wherein the sound output stops if a signal corresponding to a manipulation of the external control device is received via the short range communication module even though the confirmation button is not touched via the display of the mobile terminal.