"The company’s unique multi-layer approach to 5G, with dedicated standalone 5G deployed nationwide across 600MHz, 1.9GHz, and 2.5GHz delivers customers a consistently strong experience, with 85% of 5G traffic on sites with all three spectrum bands deployed."
Meanwhile they are very close to a construction deadline in June for 850Mhz of mmWave in most of Ohio iirc. No reported sightings.