Don't worry, it will work after you receive the Android 11 (one ui 3) firmware update. I had the same problem with my G9880 (S20 ultra) and as soon as I updated the problem was solved. You will receive the update in January!
I had the exynos version but it heats up badly with some tougher processing tasks up to the point of force closing apps. Battery consumption is worse.That's why I replaced it with the snapdragon version which is totally up to the expectations.
I have the same problem with my G9880 (S20 ultra SD). No 5G after software update and hasn't been fixed until now. We are waiting for action from Samsung's side because Kuwait network carriers won't bother to solve anything.
Actually 5G Snapdragon devices are affected after July/August software update. My S20 Ultra Snapdragon is facing the same issue. I guess some network updates should be done in Kuwait to fix this issue or hopefully Samsung could fix this issue with fu...