Ready for 5G? These are the plans you’ll need at each of the major US carriers

signal. Millimeter-wave is a higher-frequency version of 5G, offering speeds that can easily top 1Gbps. The problem with millimeter-wave, however, is range. It is often only available on particular blocks of certain cities, doesn’t work indoors and can be impeded by leaves, glass and even a hand between your phone and the transmitter.