Storage system for mobile communication device data

摘要

A data communication system in which a plurality of types of data related to a mobile unit is stored in a storage device provided in a mobile communication device, different update conditions have been previously held for each type of data, each of data stored in the storage device is transmitted to a server at a timing in accordance with an update condition for each type of data, and data sent to the server through a network line is received and written into a storage device of the server to update a database.