We've been using Visible successfully for over a year (and 3 months now) now with a ZTE phone and an attached miniature wifi router so we can connect to more than one device. In keeping with the spirit of the law, the router is the "one" device connected to the phone. Everything else is connected to the router, multiples, all at the same time. Works truly unlimited and works very well. $40 a month and use it full time. Never had any throttling, failures, or dead zones (except a small pocket at a really remote private campground in Lower Michigan one week-end).
We have our Samsung cell phones with an unlimited data plan that we use for back-up, as my wife is still working permanently remotely and we are on the road way too much. Even when home, we still use the Visible for the camper, even though our house has a totally different internet system.
We don't share our plan with anyone and don't mind the $40 a month. It is very reliable and works very well for us. But, I've learned a long time ago that if you invite anyone to your home, you can expect to get screwed over. So we don't share ours with no one, for any reason.
2019 Montana High Country 375FL
2014 Chevy Duramax HD 6.6 - 3500 Diesel Dully Long bed Crew Cab