I'm sitting at a friend's apartment right now where I've always been able to use the LTE network, and my phone consistently stayed connected to it. Since last night, though, my phone keeps switching to 4G and not switching back. When I toggled LTE off and on, it'll switch to LTE with about 3 bars, and I'll get a consistent 6 Mbps down. But after about minute, it'll switch to 4G with 4 bars and about 2 Mbps down. It won't switch back to LTE unless I toggle LTE, and then again it'll only stay connected for about a minute then switch back to 4G. I've never seen this happen before here, and I suspect it has to do with updating to iOS 6.1 last week. It seems like there's a new feature where it'll prefer 4G over LTE if 4G has a stronger signal, despite the face that LTE would still have significantly higher speeds. Resetting network settings has not helped. Has anyone else seen this?