Currently, networks use four generations of technology: 2G, 3G, 4G, and the latest 5G. The second generation was first introduced in the 1990s, the third-generation technology was first rolled out ...
Who is still using, or trying to use, 2G and 3G networks, why do they have to be turned off in the first place, and what if any alternatives are there when no 4G or 5G coverage is available?
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