It is a communication terminal including an EVDO radio control portion 1172 adapted to perform a radio communication control operation according to an EVDO communication system. When a data link is released by issuing a power-supply-off instruction during an EVDO communication, the EVDO radio communication portion 1172 is not caused to release a communication session. When the release of a data link is not based on a power-supply-off instruction, the EVDO radio control portion 1172 is caused to release a communication session and to perform reestablishment of a communication session.