A facsimile machine reads an image and stored the image data. A second circuit substrate is provided on a lower side of the first circuit substrate, the second circuit substrate having an opening which exposes part of the first circuit substrate, the second circuit substrate also having, on the lower surface side thereof, a plurality of external-connection connection pads and a plurality of test connection pads connected to the lower wiring lines. In response, a cellular telephone determines applicability of such restrictions and applies them to further use of the cellular telephone while such restrictions continue to apply.