A portable terminal (e.g., portable telephone) is constituted using a geomagnetic sensor for detecting an azimuth, and a GPS receiver for detecting a present position thereof. A direction of a prescribed place (e.g., Mecca) is calculated based on the azimuth information and position information, so that the calculated direction is indicated by an arrow displayed on the screen of a display. In addition, a prescribed message is displayed on the screen of the display, or it is produced as preset vocalized sounds by a speaker. The azimuth information and position information are automatically produced at each religious service time, at which a user, especially a muslim who pray, holds a religious service in the direction of Mecca. In addition, the portable terminal can detect a direction match between the direction designated by the prescribed portion (e.g., antenna) of the portable terminal body and the direction of Mecca.