I tried toggling 4G... going into and out of flight mode... taking the battery out and restarting... going into GSM only and then back to auto select.. Nothing worked.
The method I described above apparently forces LTE only mode and somehow causes it to stick on LTE after going back to Automatic.
I've been doing it all day with great success. It would be nice if it automatic went back to LTE, but in the meantime this is a solution where there wasn't one before.
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