Digital device and control method thereof

A digital device comprising:

• a communication unit configured to transmit and receive a signal with an external device being operated by a user of the digital device;
• a display unit configured to display an image;
• a gesture sensor unit configured to sense a gesture with respect to the digital device;
• and
• a processor configured to control the communication unit, the display unit and the gesture sensor unit,
• wherein the processor is further configured to:
• when occurrence of an incoming call event is detected, execute an incoming call mode corresponding to the incoming call event,
• when occurrence of an incoming message event is detected during the execution of the incoming call mode, transmit a first signal to the external device,
• wherein the first signal is a control signal for the external device to execute an incoming message mode corresponding to the incoming message event, and to display an incoming message information detected by the digital device, and
• when a first gesture being made by moving downward the digital device is detected, switch the digital device from the incoming call mode to the incoming message mode and display the incoming message information being displayed in the external device on the display unit.