From telegraph and telephone to mobile phone, from 1G to 4G, the evolution of communication technology has brought endless convenience and welfare to human beings and society. Now the 5G has already came, but what is the 5G?Is 5G just only faster? Of course not.The 5G is not only the accelerate of the network speed from 2G.txt to 3G.jpg then to 4G.avi. 5G also implement the expansion of the commun……