In order to enable wireless communication to/from an intended partner user's portable wireless communication device to be reliably established, provided is a portable wireless communication device, including first attitude information acquisition means for acquiring first attitude information indicating a roll angle or a pitch angle of the portable wireless communication device; second attitude information reception means for receiving, via wireless communication, second attitude information indicating a roll angle or a pitch angle of a partner communication device from the partner communication device; and determination means for determining whether or not to establish a communication connection to the partner communication device based on a bearing of each of the portable wireless communication device and the partner communication device, the first attitude information, and the second attitude information.