Wireless communication device

According to an embodiment, a wireless communication device, which complies with plural communication methods, includes a storing circuit and a received data selection determining circuit. The storing circuit sequentially stores a first received data until the first received data reaches a predetermined data size. When it is assumed that a radio signal complies to a second communication method, a first period is longer than a second period. The first period is a period from a first time when a reception of the radio signal is started to a second time when the first received data with the data size is stored. The second period is a period from the first time to a time when a second reception start signal is detected. The received data selection determining circuit determines a selection of the first received data, when the second reception start signal is not detected at the second time.