when does Note 10 + will get ONE UI 3.0

once try resetting ur keyboard (in keyboard settings -> Reset

ok 4G is comming what's the issue then

try these solutions one after other (any one can successfully)1.check signal strength2.try to keeping in only LTE mode (not auto)3.remove both sims and keep only one sim and put 1st sim slot and restart phone and check

Yes, it does