A mode determination section receives control signals from a quality IF section, a quality IF section, and a quality IF section, and determines whether a W-LAN communication section, a personal handy phone communication section, and an EV-DO communication section are each during communication or in the sleep mode based on the control signals. A request section requests the quality IF section, the quality IF section, and the quality IF section to output the radio quality information at predetermined intervals. A quality determination section receives control signals from the quality IF section, the quality IF section, and the quality IF section. Then, it determines one of the W-LAN communication section, the personal handy phone communication section, and the EV-DO communication section to be used for communication based on the radio quality information indicated by the control signals.