AT&T's Dynamic Spectrum Sharing (DSS) Technology allows carriers to use the same channel for both 4G LTE and 5G users. AT&T Labs came up with and developed the concept which is now part of 5G standards. As AT&T says, "it turns up 5G without turning off 4G LTE." Resources are allotted to each technology based on demand. Today, AT&T announced that it has turned on 5G in 28 more markets coast to coast covering 179 million people. Overall, AT&T is offering 5G to consumers in a total of 355 markets in the states.