The most common 2G technology was the time-division multiple access (TDMA)-based GSM , originally from Europe but used in most of the world outside Japan and North America. In North America, Digital AMPS (IS-54 and IS-136) and cdmaOne (IS-95) were the main systems.
Read moreIs 2G used anymore?
When Will 2G Shut Down? Most of America’s largest carriers have already shuttered their 2G service or plan to soon: AT&T stopped servicing its 2G network back in 2017. Verizon Wireless phased out its 2G CDMA network at the end of 2020 .
Read moreWhat is the most successful 2G technology?
GSM became the predominant 2G technology that swept through most parts of the world, and went on to serve 80% of the mobile market in the decades to come.
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