A portable radio information terminal provided with at least two circuits, namely, an input-signal judging circuit and a message-notification-operation halting circuit. The input-signal judging circuit operates to form a judgment as to whether or not an input signal generated by an input device in the course of a message-notification operation is a rotary input signal generated by a rotary/press input device and supplies a result of the judgment to the message-notification-operation halting circuit. The message-notification-operation halting circuit continues the message-notification operation if the result of the judgment received from the input-signal judging circuit indicates that the input signal is a rotary input signal, and halts a message notifying unit currently carrying out the message-notification operation if the judgment indicates input signal is not a rotary input signal.