Patent ID: 7099651

Claim:
A cellular phone managing method comprising: generating and accumulating cellular phone user information, said generating including generating user information containing charge arrears status from cellular phone receipt arrears information; dealing with a specific user by extracting a specific user conforming to predetermined conditions from said user information and for dealing with a cellular phone of said extracted specific user in accordance with said extraction conditions, said dealing with a specific user including: extracting a specific user from said user information on a delinquent period basis and issuing dunning and/or function restriction to a cellular phone of said specific user depending on the delinquent period; and sending a dunning mail to a cellular phone of said specific user in case of a short delinquent period, imposing a restriction on functions of said cellular phone of said specific user in addition to said dunning mail in case of a longer delinquent period, and causing said cellular phone of said specific user to generate an alarm in case of an even longer delinquent period.