Linux:
@b0jang You just might need to move the modem to a better location in the house or up a bit higher
I've tried it outdoors on the deck, still won't pick up 5G.
Spyware:
Shift house or have an external antenna installed. I've had better 4G signal with modem in a steel box. You obviously aren't within 500 metres of tower.
Yeah, the 4G signal isn't that great. But the 5G one is more than adequate and I don't see why the modem fails to connect to 5G, unless there's some minimum quality threshold to be even allowed to connect to the 5G tower.