treequell the reset options at the link you provided didnt work.
It happened simultaneously anfter my wife ans I both updated and whwn I (stupidly) updated my test device as well.
When I tey to make a call it says disable aurplane mode.
When Ibtey to text the built-in messaging client gives me a red message saying text not sent tap to try again.
Yet the same SIM works in all other phones.
I don't think I can be the only one affected given my multiple phones.
I will see if it works with another carrier SIM in case they made a voLTE change.
In the meantime, is there anyone else affected? Anything else I can try?