What is 3G and why is it being shut down?

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What is 3G and why is it being shut down?: On Feb. 22, 2022, AT&T is scheduled to turn off its 3G cellular network. T-Mobile is scheduled to turn its off on July 1, 2022, and Verizon is slated to follow suit on Dec. 31, 2022. The vast majority of cellphones in service operate on 4G/LTE networks, and the world has begun the transition to 5G, but as many as 10 million phones in the U.S. still rely on 3G service. In addition, the cellular network functions of some older devices like Kindles, iPads and Chromebooks are tied to 3G networks. Similarly, some older internet-connected systems like home security, car navigation and entertainment systems, and solar panel modems are 3G-specific. Consumers will need to upgrade or replace these systems. So why are the telecommunications carriers turning off their 3G networks?

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