Currently having same issue on 2 devices iPhone 11 and 12 pro, IOS 18.0.1 and 18.2 beta 2, both phones only showing 3G data and both take a quite a while to connect to the network after a restart, resetting network settings did not resolve the issue....
I also had this issue at 7:00 Newfoundland Time, Phone will drop back to 3G for calls, but I now somehow get low 5G service in my house. I've been on the iOS 17.4 since the first Dev Beta, and no updates were installed today so I don't think that wo...