I have used a number of consumer LTE modems that work really well and give me 20mbps down and about 5/7mbps

It is useless to a Verizon customer -- as I am -- which is to say 151 million subscribers to Verizon Mobile with the lowest "churn" rate (people leaving for another carrier).In other words, this won't work at all in many areas where you might be "on the go" -- as Verizon is everywhere (and with a strong 4G LTE signal) but AT&T isn't.