Patent ID: 8189500

Claim:
A communication terminal for packet data communication with a base station that is connected to a mobile communication network, the communication terminal comprising: a search unit for searching for connectable base stations; a history check unit for examining if discovered base stations searched for by the search unit have been previously connected to; a trial unit for trying the packet data communication with not-yet-connected base stations when the not-yet-connected base stations are determined to be included in the discovered base stations by the history check unit; a relation storage unit for storing relationship information relating the result of a packet data communication trial by the trial unit with a base station ID of a base station subject to the packet data communication trial; a packet data communication availability check unit for determining if a base station with which packet data communication is possible is among the discovered base stations based on the relationship information stored in the relation storage unit; and a presentation unit for presenting information regarding availability of packet data communication based on the determining by the packet data communication availability check unit.