System and method of deleting a call log and message log in a mobile phone

1 . A method of automatically deleting logged calls and messages in a mobile phone, in order to maintain security and protect privacy, the method comprising the steps of:

selecting a log deleting management database from a menu;

inputting a password;

displaying types of the log deleting management database if the input password is correct; and

recording at least one of a telephone number, a method of dialing the telephone number, and a method of recording the telephone number when the telephone number record is selected from the log deleting management database.

2 . The method according to claim 1 , wherein said dialing method determines whether a telephone number stored in said log deleting management database and a caller's name should be revealed to the recipient of the call when the number is dialed.

3 . The method according to claim 1 , wherein said recording method determines whether a telephone number stored in said log deleting management database, if received, should be recorded in a secret received number list.

4 . The method according to claim 1 , further comprising:

displaying a list of telephone numbers stored in the log deleting management database when a telephone number list is selected from the log deleting management database; and

while the list of telephone numbers stored in the log deleting management database is displayed, additionally perform at least one of recording the telephone number, recording a method of dialing the telephone number, recording a method of recording the telephone number when a new record is selected, deleting a selected telephone number when a deletion option is selected, and correcting a selected telephone number when a correction option is selected.

5 . The method according to claim 1 , further comprising:

displaying a message “no telephone number recorded” if the input password is incorrect.

6 . A system for automatically deleting logged calls and messages in a mobile phone, in order to maintain security and protect privacy, the system comprising:

a first mobile telephone and a second mobile phone; and

said first mobile phone being adapted to perform the following operations:

select a log deleting management database from a menu;

input a password;

display types of the log deleting management database if the input password is correct; and

record at least one of a telephone number, a method of dialing the telephone number, and a method of recording the telephone number when the telephone number record is selected from the log deleting management database.

7 . The system according to claim 6 , wherein said first mobile telephone is further adapted to determine whether a telephone number stored in said log deleting management database and a caller's name should be revealed to the recipient of the call when the telephone number is dialed.

8 . The system according to claim 6 , wherein said first mobile telephone is further adapted to determine whether a telephone number stored in said log deleting management database, if received, should be recorded in a secret received number list.

9 . The system according to claim 6 , wherein said first mobile telephone is further adapted to display a list of telephone numbers stored in the log deleting management database when a telephone number list is selected from the log deleting management database; and

while the list of telephone numbers stored in the log deleting management database is displayed, additionally perform at least one of recording the telephone number, recording a method of dialing the telephone number, recording a method of recording the telephone number when a new record is selected, deleting a selected telephone number when a deletion option is selected, and correcting a selected telephone number when a correction option is selected.

10 . The system according to claim 6 , wherein said first mobile telephone is further adapted to display a message “no telephone number recorded” if the input password is incorrect.