Anecdotally, coverage and speed in my area are slightly better with AT&T than they were with T-Mobile. Based on actual data, AT&T beats out T-Mobile for coverag

Anecdotally, coverage and speed in my area are slightly better with AT&T than they were with T-Mobile. Based on actual data, AT&T beats out T-Mobile for coverage and speed across most of the US. Yes it supports wi-fi calling (my Pixel 6a defaults to that whenever I'm at home). And yes it supports tethering / hot spots.