Still having crappy connectivity on 12.1.1 with my XS Max, Verizon. I was visiting my mother in the hospital and her doctor called me there repeatedly on my cell and the call failed each time after a few seconds. I thought it was just the building, and went out to make the call. However, back in the hospital today I tried calling my uncle from the same room and after 3 brief connections and “call failed” messages, I borrowed my son’s iPhone 6s, also on Verizon, called my uncle, no drops, no failures. At this point, I’m just disgusted and feeling like Apple has really screwed up these phones.
Hospitals are a tough environment for a cell phone. I have not had a cell phone get really good coverage in one over the years. I have usually had to connect to the hospitals WiFi.