2G stands for second-generation cellular networks, representing the historic shift from analog to digital mobile communications. It encompasses standards like GSM, CDMA, and TDMA, which allowed for basic data services such as SMS text messaging alongside encrypted voice calls. These networks operate by multiplexing multiple users into a single frequency channel, vastly increasing system capacity over earlier analog systems.
We still have a few legacy telemetry devices out in the field relying on the 2G network, so we need to upgrade them before the final sunset.
The shutdown of 2G networks globally has forced many industrial IoT and telemetry systems to migrate directly to 4G or LTE-M.
Related terms
3G
The third generation of mobile telecommunications technology, known for introducing mobile broadband to cellular networks.
GSM
Global System for Mobile communications is a standard for digital cellular networks.
CDMA
A channel access method where multiple transmitters send information simultaneously over a single communication channel.
EDGE
Enhanced Data rates for GSM Evolution is a legacy mobile data standard that improved 2G speeds.