T-Mobile has launched 5G SA (stand-alone) technology in its mid-band spectrum (primarily band 41) nationwide. This step not only moves to a more modern network with lower latency, but will enable 5G CA (carrier aggregation) of 3 frequency bands of simultaneous 5G, allowing faster data speeds of up 3 Gbps. This new, faster 5G mode will "begin" to roll out this year. The Samsung Galaxy S22 will be the first phone able to use this mode, "and it will expand to additional devices in the near future." Initial 5G networks operated in NSA (non-stand-alone) mode, which required mobile devices to stay connected to a 4G network in one band. This limited the specific frequency band combinations devices could use, limiting 5G data speeds and — in some cases — 5G coverage. T-Mobile addressed the coverage issue with the nationwide launch of 5G SA in its low-band frequencies in 2020. Today's announcement extends 5G SA to mid-band frequencies, addressing the data speed issue.


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