A cellular phone places a call to vehicle navigation apparatus, performs ID matching, and acquires the information on the position of the vehicle measured by the vehicle navigation apparatus. The cellular phone acquires peripheral map data including the po...

A cellular phone includes an X-axis magnetic sensor for outputting a first value corresponding to a component of an external magnetic field along the direction of a transverse axis of the main body, and a Y-axis magnetic sensor for outputting a second valu...

A portable phone has a CPU and a magnetic sensor unit including an X-axis magnetic sensor, a Y-axis magnetic sensor, and a temperature sensor. CPU measures at first and second temperatures the influence of a magnetic field of permanent magnets upon an outp...