I don't think I've ever seen "3G" showing in the little connection icon. All it's ever shown is 4G or the letter E or a WiFi graphic when I've switched to Wifi.
It's pretty amazing that we've gotten to the point where it's even reasonable to expect a phone to get a connection as fast as what your home ISP provides. I remember when I got my Nokia 6620 years ago, and it was the first smart phone on AT&T's Edge wireless network. I don't know how fast Edge was, but I suspect not very fast by today's standards.