We have 4 AT&T 5S users in the family. 3 of the 4 always say "LTE" in the status bar area. And we have good LTE coverage around here. But I noticed that my wife's 32GB 5S just says 4G all the time. Everyone has the latest release build of iOS. I've rebooted the phone and reset network settings, but nothing helped. Any ideas? Kind of stumped. Thanks in advance.