Here is a short YouTube video on how the Mifi works - https://www.youtube.com/watch?v=saoFblUv99M
"I needed an iPhone to run some apps whilst at Disney World. USA Smart Phones was fantastic, they offered a short-term rental at a significantly lower rate than anyone else I could find. Their communication was superb, about the best I've ever experienced (they called me on a Sunday evening within a few minutes after submitting the order online to confirm and talk me through service plan options). They issued the refund from the balance of my deposit immediately after receiving the returned phone. I give my highest possible recommendation for USA Smart Phones - Mark Rouleau, Indianapolis, IN "