A communication terminal according to the present invention is configured so that a user can selectively set any one of a first display mode for displaying a CLI message with high priority, a second display mode for displaying a phone book storage information with high priority, and a third display mode for displaying both of the CLI message and phone book storage information. When an incoming call takes place, it is determined whether or not any one of the first, second, and third modes is set. According to the determination result, the caller name notified by the CLI message and the user name stored in the phone book are selectively displayed.