Apparatus and method for displaying messages in a mobile terminal

PURPOSE: An apparatus and a method for displaying messages in a mobile terminal are provided to enable a user to confirm the related messages at one time by discriminating the related messages through a tag in a portable terminal. CONSTITUTION: A portable terminal calculates the replay origination time differences and the averages of the time differences(303). The portable terminal updates a TIV of a corresponding time section(305), and confirms a tag(307). The tag is allocated to an original message, and the portable terminal allocates the tag identical to the tag of the original message to a replay message(309). The portable terminal generates a new tag(311).