At my one property I called 611 to report/complain, thinking maybe something was down. This is what they told me to do. My iPhone never found LTE even with a reboot. It works to find LTE elsewhere when I’ve since done this trick so it’s not my phone, it seems. It’s a dead area. Yet the signal strength indicates otherwise.
It’s not clear how one reports major service issues to ATT for further investigation without waiting on hold for an hour with 611. And that may not even do it.
And that’s not to mention poor performance when I have service in many places. Here’s an example of miserable response times. A fine push of data speeds to download, but it’s almost like the requests can’t go out..
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Quite often it just can’t connect to speedtest, BITOG, google, you name it. Even slower than this
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That was one of the things that has clued me in more than once. I’ve been at places with “rewards” cards on my phone and the apps have said I’m “offline”, even with multiple bars of service. No settings, restarts, etc. have fixed it. Leaving the area does.