As soon as I installed the beta software, I no longer see the 5G UC. I see 5G+ and when I run a speed test, my phone is only connecting to LTE. I hope this is a fix soon cause it's annoying.
The connection indicator in the Speedtest app doesn't seem to be accurate. You can go to service mode by dialing *#0011# and verify which band you're currently connected to. I'm seeing the 5G+ icon and I'm connected to one of T-Mobile's 5G UC band, so I think it's safe to say that 5G+ and 5G UC are the same thing.
Thank you for your feedback.
Please use the latest Samsung Members app to submit an error report (Samusng Members > One UI Beta Program > Beta Feedback > Error Report.
We appreciate your contribution to the Beta Program.
One UI Beta Team