FIELD: information technology.
SUBSTANCE: find out whether the use of the telephone number stored in the contact record is longer than the period of use of the telephone number, receive a period of use according to a predetermined period, update the period of use in a timely manner, when the period of use changes, and delete the phone number from the contact record when the usage time is longer term of use. In this case, the receipt of a period of use according to a predetermined period comprises steps of recording by the service side the period of use of the telephone number provided to the user, by the service party, the period of use to another user who needs to store the telephone number, download the telephone number to side of the service according to a predetermined period and receive the period of use requested by the telephone number from the service side.
EFFECT: providing more accurate definition of whether the phone number has expired, to automatically delete contact records that help the user conveniently manage the address book.
14 cl, 15 dwg
