Benefits of 4G:

--->download speed is from 100Mbps to 1Gbps
--->high quality mobileTV
--->free internet anytime, anywhere
--->video streaming has no buffer
--->backward compatibility
--->most likely, phones are built with
...............fiber thread as a substitute of hologram(no more keyboard)
...............storage up to 250GB
...............20MP camera
...............user controlled softwares(choose your own application)

4G was implemented in Japan but here in the Philippines, implementation is on the year 2015.