System and method for providing integrated projection service of plurality of smart devices in vehicle

A system for providing an integrated projection service of a plurality of smart devices in a vehicle and including a head unit, wherein the system comprises the head unit having:

• a controller configured to control approval when smart devices make a request for connection to enable wired or wireless data communication, to search for a service to be provided by a corresponding smart device, to integrate a plurality of service lists retrieved by each of the smart devices, and to list priorities for respective services to be provided in the vehicle;
• a transmission/reception unit connected to the controller and configured to receive a signal to request enabling wired or wireless data communication of the smart devices;
• and
• a display unit connected to the controller and configured to display priorities for the respective listed services according to control of the controller.