It sounds interesting that one will be able to use fifth generation (5G) as Samsung claims that it has successfully tested 5G services. If it is correct than worldwide 5G will be available by 2020. Just check out the speed of 5G, 4G and 3G to understand the difference of technology.
Those transmission speeds would mean that an entire 640MB CD could be downloaded in five seconds, or a standard 4GB DVD in half a minute. At such speeds, users could have real-time streaming of ultra-high definition video, 3D movies or games. 5G would offer transmitting speeds "up to several hundred times faster" than existing 4G networks.
4G has been launched as a trial version in Kolkata by Airtel but imagine they do not cover the city properly as they have certain areas where one do not get any signal. So companies have to get their act together. India is better in terms of claims as it claim to offer 21 MBPS in 3G whereas in UK the 4G services that are now being implemented offer average speeds of between 8 Mbps and 12 Mbps.
Spped upto 21 MBPS but it is a distant dream as companies fail to deliver such speeds. At a good 3G speed one can make a video call.
India is still struck with 2G as a company like Vodafone has not still launched 3G services in Punjab for mobiles. Thus we will have to wait much beyond 2020 to see 5G getting implemented in India. Moreover the researchers have played down claims by Samsung to have developed "5G" mobile systems able to transmit data hundreds of times faster than 4G networks, pointing out that its tests only apply to one element of the system needed to implement a standard.