An operation control method for a vehicle infotainment system for enabling phone projection to be automatically executed during a connection between a head unit of a vehicle and a smart device, and the method comprises: a phone projection setting step of allowing any one of a plurality of phone projections mounted on a head unit of a vehicle to be set; a step of connecting a first smart device to the head unit of a vehicle; a step of determining whether the first smart device connected to the head unit of a vehicle supports the phone projection set in the phone projection setting step; and a step of executing the set phone projection if the first smart device supports the set phone projection, according to the determination result.