The problem with relying on cell service to provide Internet is many of the place RVer's tend to go are in fringe or even no cell areas. I have both an iPhone and iPad with Verizon 4g service, and yet there are still many places in California where you don't get 4g service. But Verizon is better than any others. If you really need it for your business then you'll just have to watch where you camp. You may not be camping on much of the California coast or in the mountains. Or if you want to camp on the Beach there are some nice campgrounds in Los Angeles, Orange, or San Diego County that probably have good cell coverage.
