5G, which is short for 5th Generation, is a cellular communication network standard. It follows the 4G, 3G, and 2G digital cellular standards, and the original analog cellular standards collectively referred to as 1G. 5G will provide cellular data at speeds of 20 Gbps, with enhanced MIMO (multiple-input multiple-output) communications to serve an increasing number of IoT devices.
The original 5G specification was created by the ITU (International Telecommunication Union). Today, it is standardized by the industry consortium 3GPP (3rd Generation Partnership Project). 5G networks are scheduled to begin service in April 2019, with broad adoption by 2020.