Does T-Mobile Wifi for Home 5G use the 5G UC?

I got this for my Mom's condo a few weeks back. It works brilliantly!  That said, it just says "5G" on the status bar even though my Mom lives in a full 5G UC area.  Speedtest maxes out wirelessly around 85 down, 30 up but the same test on my iPhone 13 Pro Max using UC is about 250-300 down, 30-60 up.  Sooo yeah.  The tech specs absolutely show that the device supports 5G UC 2.5 ghz band n41.  I've called customer care a few times and they are very much not helpful. 
 

All that said, even in regular 5G it works so fantastic.  She streams everything, 4K Dolby Vision, multiple phones and tablets accessing at the same time - absolutely zero issues. Super impressed. Let's hope they iron out the UC thing soon.