2G connectivity refers to second-generation wireless telephone technology. Second generation 2G cellular telecom networks were commercially launched on the GSM standard in Finland by Radiolinja (now part of Elisa Oyj) in 1991.
Three primary benefits of 2G networks over their predecessors were that phone conversations were digitally encrypted. 2G technologies enabled the various mobile phone networks to provide the services such as text messages, picture messages and MMS (multi media messages). All text messages sent over 2G are digitally encrypted, allowing for the transfer of data in such a way that only the intended receiver can receive and read it.
Some 2G devices
After the launch of 2G, the previous mobile telephone systems were retrospectively dubbed 1G. While radio signals on 1G networks are analog, radio signals on 2G networks are digital. Both systems use digital signaling to connect the radio towers (which listen to the handsets) to the rest of the telephone system.
2G network technology uses digital signals instead of analog signals used in the 1G network. This network provides better voice quality and higher capacity compared to the first-generation network.
2G connectivity has been superseded by newer technologies which would be tackled in our next post. Despite the rise of more advanced network generations like 4G and 5G, the 2G network still plays a crucial role in certain regions and industries, especially in developing countries where 2G-compatible devices are more affordable and widespread compared to newer devices.