As long as the Federal Aviation Administration and airlines are convinced that flights will not be jeopardized, a new swath of radio frequencies may provide AT&T and Verizon 5G with increased speed and reach. Suppose you've been paying attention to the conflict between carriers AT&T and Verizon and the Federal Aviation Administration over safety concerns related to 5G. In that case, you may have heard the phrase "C-band" spoken. This is a reference to the C-band spectrum used by wireless networks.