If user tests are to be believed, the initial rollout of AT&T's 5G home internet network may be disappointing to most. Download and upload speeds aren't much better than those on 4G LTE. These tests raise concerns about the viability of 5G in its current state. Numerous problems associated with wavelength penetration and power draw may not be worth the cost if the performance increase for 5G is this marginal.
https://www.notebookcheck.net/AT-T-s-5G-speeds-may-not-be-much-faster-than-4G-LTE.390721.0.html