5G mmWave still seems like the wrong priority to me. Ridiculously fast, but too difficult to deploy. From the iPhone 12 review in the New York Times:

But the locations where I tracked down ultrafast 5G were far less satisfying. At one point, I found the speedy connection in the back of a Safeway parking lot. Another time I was in front of a Pet Food Express. What would I do with an incredibly fast internet connection there?