2G Network

2G is short for second-generation wireless telephone technology. Second generation 2G cellular telecom network commercially in 1991. Three primary benefits of 2G networks over their predecessors were that phone conversations were digitally encrypted: 2G introduced data services for mobile, Starting with SMS text messages, 2G system allowing for far greater mobile phone penetration levels were significantly more efficient on the spectrum. 2G technology such as text messages, picture messages and MMS enabled mobile phone network to provide the service.
After 2G was launched, the previous mobile telephone systems were retrospectively 1G dubbed.