My friend moved to a new house and ATM there is no fixed internet available yet. He has great 4G/LTE coverage so he would like to use that.
So the question is, is it possible to just plug a USB 4G dongle to a pfSense box and then configure it to use 4G as the WAN?
If that is not possible or recommended, Can you recommend a 4G/LTE “modem” that has a ethernet port and is mains powered? Doesn’t have to be industrial, but would prefer not to use those cheap consumer “devices”. So something in the prosumer segment 
Thanks.