PURPOSE: To effectively utilize the received information service by displaying message data when identification information to identify a type of message data and identification information of the message data during display are identical to each other.

CONSTITUTION: A control section 7 consists of a CPU or the like. When the control section 7 receives new information service data during the display processing of the display content based on the information service data stored in a message memory 10 in the read mode in the reception processing, the display format data of the information service displayed as the identification information and the data of the display format of th received information service data are detected and collated, and when they are coincident, the reception of the new information service data is informed by a call tone different from usual reception notice and the display content by the received information service data is displayed on a display section 11 with priority.