T-Mobile has a reputation for not working well in buildings. The lower the frequency of a radio wave, the farther it can travel and the better it can pierce objects, especially concrete walls. But what does this mean for its customers? Greater Coverage Inside and Outside With the newly acquired 600 MHz spectrum, which will broadcast as band 71, T-Mobile will be able to deploy far-reaching signals with greater bandwidth across the entire US. Prior to this, T-Mobile had low-band spectrum in the 700 MHz wavelength, broadcast as band 12, but it did not have enough bandwidth to maintain sufficient data speeds. A more comprehensive list maintained by a third-party can be found here.With this new spectrum, T-Mobile now has sufficient low-band licenses to broadcast across the entire US and provide sufficient data speeds due to the high bandwidth allocated. As of April 2020, the list only has about 20 devices, but I think it’s out-of-date. On its website, T-Mobile has a list titled “Extended Range LTE – (600MHz) COMPATIBLE PHONES”. I believe the first phone compatible with the band was the LG V30, a phone released in late 2017. Since T-Mobile only began using the band in the last few years, many consumers still don’t have devices that support band 71. T-Mobile subscribers can only take advantage of band 71 coverage if they have compatible phones. The company has put a lot of effort into pitching the benefits of its Extended Range LTE™, T-Mobile’s marketing phrase for the combination of its low-frequency coverage in band 12 and band 71. T-Mobile spent a lot of money acquiring the rights to transmit signals in band 71 in most of the U.S. While low-frequency bands work well for offering extensive coverage, they’re not especially good for delivering high speeds. Since band 71 is lower frequency than other bands commonly used by cellular companies, it’s unusually well-suited for traveling long distances and penetrating buildings.
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