5G on the horizon: Here's what it is and what's coming – Ars Technica

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That doesn't mean 5G won't open up interesting possibilities in areas like home broadband and machine-to-machine connectivity. But in the form of wireless mobile device connectivity we know best, 5G marketing has been writing checks that actual 5G technology will have a lot of trouble cashing. The first thing to know about 5G is that it's a family affair--and a sometimes-dysfunctional one. Millimeter-wave 5G occupies bands much higher than any used for 4G LTE today--24 gigahertz and up, far above the 2.5 GHz frequency of Sprint, hitherto the highest-frequency band in use by the major US carriers. At those frequencies, 5G can send data with fiber optic speeds and latency--1.2