Vehicular communication system

摘要

Under a state where an in-vehicle navigation apparatus and a cellular phone intercommunicate with each other by connecting a Bluetooth communication link, when a changeover relative to an application program is determined in one of the in-vehicle navigation apparatus and the cellular phone, an application program synchronization operation is executed such that the application program stored in the in-vehicle navigation apparatus and the application program stored in the cellular phone become identical to each other.