To provide a mobile radio terminal which can be prevented from being abused by a third person through a connecting interface for connecting external equipment.

When a utilization limit request such as dial lock is made through a key input part 72, a control part 100 limits utilization of a BT radio part 90, based on conditions corresponding to the request. Once this utilization limit is set, as long as authentication information to be inputted through a camera 81 does not match with authentication information previously stored in a memory part 60, Blue tooth communication using the BT radio part 90 cannot be performed.