I have no idea why TMO updated the map yet. Visited about every site for the 5G UC coverage they they are showing, even did network resets at each site and did the airplane mode switch and no connection what so ever. Even couldnt even pick it up on the main roads that are shown for the sites. Think they jumped the gun on this one. I know I can connect to 5G UC since i'm a iphone 12 pro. and have connected to it before in richmond va with good results.