I have a Max BR1 Mini (original, not LTE-A), and one of the SIMs in it is Verizon via Unlimitedville. It worked fine for a while, but now will only connect via 3G. Things I’ve tried:
Putting SIM in a MoFi and it connected fine to LTE.
Putting a t-mobile SIM in the BR1-mini: connects fine to 4G
Forcing to LTE-only: no connection
Rebooting the BR1-mini
Resetting the BR1-mini to factory defaults
Traveling to other regions (has persisted across 5 states and 3 timezones now)
Any ideas? The settings are basically all default/auto, which worked before. The APN is auto-setting to “VZWINTERNET”