I am confused.
Here's a listing for the A045M.
https://www.ebay.com/itm/325416371254?hash=item4bc453c436:g:wHQAAOSwdI1jY99s
When I look at the 4G bands, it's these:
1, 3, 5, 7, 8, 20, 28, 38, 40, 41
AT&T says these are their bands:
https://www.att.com/support/article/wireless/KM1008740/...