Is this something that just recently happened. I just find it strange that a phone that's been out for 2 and a half years is suddenly having LTE problems. I have no such problems with my S9. But then, I'm on AT&T.
I received this phone from my daughter(birthday present) everything was fine for about 2 weeks then I recieved a software update and I have not had lte service since then! joeldf, if you can find a solution or know of something that might help please let me know