Mobile communication system, mobile terminal and controlling method thereof

A first mobile terminal, processing data with a second mobile terminal registered as a master device, the first mobile terminal comprising:

• a wireless communication unit configured to wirelessly communicate with the second mobile terminal;
• and
• a controller configured to:
• register the second mobile terminal as a master device and the first terminal as a slave device,
• store, 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,
• transmit, via the wireless communication unit, an application activation request signal to the second mobile terminal based on the stored status information,
• receive a response signal corresponding to the application activation request signal from the second mobile terminal, and
• activate the application in response to the received response signal.

A mobile communication system processing data between a plurality of mobile terminals, the mobile communication system comprising:

• a first mobile terminal registered as a slave device through software execution;
• a second mobile terminal registered as a master device through the software execution;
• and
• a communication server transmitting and receiving the data between the first mobile terminal and the second mobile terminal,
• wherein the first mobile terminal further comprises:
• a wireless communication unit configured to wirelessly communicate with the second mobile terminal;
• and
• a controller configured to:
• register the second mobile terminal as a master device and the first terminal as a slave device,
• store, 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,
• transmit, via the wireless communication unit, an application activation request signal to the second mobile terminal based on the stored status information,
• receive a response signal corresponding to the application activation request signal from the second mobile terminal, and
• activate the application in response to the received response signal.