I have noticed that now that I've activated the wi-fi calling via tech support my phone no longer connects/displays LTE+, only LTE , when I toggle off wi-fi. I've opened another ticket with tech support to investigate
Yes, I have received the 8.1 update, but I was also in the beta (now on the non-beta 8.1).I can also confirm that contacting tech support fixed the "emergency contact/ iPhone" prompt and is now working on my device