In a cell phone, no consideration is given to a switch unit when a reception circuit for space diversity is added, and consequently an antenna can be optimally connected to the reception circuit for space diversity. The cell phone comprises a first antenna for radio communication, a transmission-reception circuit to exchange signals with a base station through the first antenna, and a GPS reception circuit to receive signals from the GPS satellite through the first antenna. The reception circuit receives a signal from the base station, a second antenna different from the first antenna is provided, and the switch unit changes over connections between the first antenna and the second antenna, and the transmission-reception circuit, the GPS reception circuit and the reception circuit according to operation modes.