A method for providing information to a head unit of a vehicle by using a template-based user interface. The head unit acquires information on multiple applications belonging to a specific category among built-in internal applications of the head unit and external applications stored in a mobile terminal connected with the head unit. The head unit acquires information on available applications that support detailed functions included in the acquired multiple applications belonging to the specific category by individual detailed functions by referring to the information on the detailed functions included in the applications belonging thereto. The head unit to displays one or more lists of the available applications by the detailed functions through the template.