The communication device which implements a voice communicating function, a OS updating function, a navigation system, a remote controlling system, an auto emergency calling system, a cellular TV function, a GPS search engine function, a mobile ignition key function, a voice print authentication system, a fingerprint authentication system, an auto time adjusting function, a video/photo function, a taxi calling function, an address book updating function, a batch address book updating function, a batch scheduler updating function, and a calculating function.