Don't waste your time.
I spent a lot of time trying to get the service to work. If you're not mildly tech savvy, do not even bother with the service. You need to go into your phone settings and get direction from their support team through their own application. It involves making some changes and adjustments to APN and another setting. I got this service for their Global Roaming services and the phone briefly worked at one my layovers. Enough to use 0.01gb of data according to their app. I was otherwise not able to use the service. Fonus ultimately failed to provide the service I paid for, and would not provide a refund. It's a bit of a gamble to go with them, and they do not stand behind their (lack of) service.