T-Mobile is using mmWave spectrum in the 39 GHz band . T-Mobile brands its mid-band and millimeter wave flavors of 5G as ‘Ultra Capacity’ versus the “Extended Range” 600 MHz deployments used for broader nationwide 5G coverage.
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T-Mobile will continue building out 5G in millimeter wave (mmWave) , where it makes sense, like dense urban areas. Millimeter wave delivers massive capacity, but only over a very small footprint.
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