I upgraded a few days ago and now cannot text or call some of my contacts. Support was not helpful. I know have a Primary line and a Business line, same number on both? I switch between lines to try and text and cannot. I also cannot text from my computer to the same people. I have iPhone 13 Pro Max and an iMac. Everything is up to date. Thank you !
My daughter had the same issue after the upgrade - she eventually gave up on customer care fixing her issue and switched services -- I have been a customer for years and it appears that i will be switching at the end of the month as well -- they tell me i can't upgrade without buying two new phones. Good LUCK