Upgraded to 4G MiFi when we were in the Denver area a week ago. We have not been in 4G coverage until now; Sioux Falls, SD. I must say the speed difference is incredible. So far, the upgrade was a smart decision.The only thing I have noticed is the battery life is not very long. But, we keep it plugged into the charger so it is not a big negative. I'll have to time it when I get a chance.
Overall, my experience with Verizon Broadband coverage around the nation is very positive.
OK. Timed the battery. Looks like 3 1/2 to 4 hours. Acceptable.