JIO’S ‘STANDALONE’ 5G ARCHITECTURE.

Second generation (2G) developed in the early 1990s: This 2nd generation technology introduced digital voice (e.g. CDMA- Code Division Multiple Access and GSM-Global System for Mobile Communication).

Roaming was offered to users through small data services like SMS and MMS at a maximum speed of around 50 kbps. In 2G there is little shift of focus from data support to voice calling.2G continues to be popular in India even as it is being gradually phased out in many parts of the world. Jio, a major service provider in the country, last year set itself a goal of ‘2G-must Bharat’ — to “free 300 million subscribers still trapped in the 2G era”.