4G communication technology is the fourth generation of mobile information system, is a better improvement on the 3G technology, compared to 3G communication technology, a greater advantage, is the WLAN technology and 3G communication technology for a good combination, so that the image transmission speed is faster, so that the transmission of the quality of the image and the image looks more clear. The application of 4G communication technology in smart communication devices allows users to access the Internet more quickly, with speeds up to 100Mbps.