Sensor data of respective controlled objects of a vehicle are collected by calling a vehicle remote-control system provided to the vehicle via a mobile phone, and then these data are displayed on an LCD display panel 11c of the mobile phone. In this state, the controlled object to be remotely controlled is selected by operating a cursor (30) and an ON/OFF setting button (31), and then its ON or OFF state is set. At this time, the remote-control command data are transmitted to the vehicle remote-control system from the mobile phone to set the corresponding controlled object. The condition is transmitted once again to the mobile phone as the sensor data, and is displayed on the LCD display panel (11c).