Cell search method and mobile communication terminal

A mobile communication terminal to be used in an environment in which a plurality of common carriers run respective networks using different frequency bands within a specified range of frequencies, comprising:

• a transmitter/receiver for communicating with a base station via an antenna;
• a cell search section for searching for a plurality of cells to find a cell of a desired network;
• a cell information storage section for storing first frequency band information together with corresponding network information having been searched by the cell search section during finding the cell of the desired network;
• and
• a cell search control section for determining each frequency band among the specified range of frequencies whose band allocation is continuing and adjacent to the first frequency band information corresponding to the cell of the desired network as second frequency band information for selection, and instructing the cell information storage section to store the second frequency band information together with a given priority;
• and
• wherein the cell search control section instructs the cell search section to find a frequency included in the second frequency band information in accordance with the given priority when the frequency being used in the desired network is lost.