I have been looking at pre-paid plans from Verizon(only 700 LTE band for their pre-paid hotspot), AT&T, T-Mobile etc. perhaps to put in a MiFi hotspot or buy a hotspot from a provider, but have no idea which one to use, their reputation, real life coverage etc. It is clear that all data plans in the USA are really expensive, I get 100GB monthly traffic with my Scandinavian provider for the same price as 6-8 GB monthly in the US, which I guess could be a problem with our Apple phones as they do not recognize a metered WiFi hotspot. But that is another issue. I travel all over but most of the time outside the big cities -- and my experience from roaming with my own phone and the cheap local phone so far tells me that coverage fluctuates wildly depending on the operator.