Hi Ike. We have the same model, 2019 3791RD. The white Furrion box you see when you come in the door is only the pre-wire for the device. If you slide the cover to the left you'll see there is nothing there. You have to purchase the device from Furrion along with a data plan. It is quite pricey. If you have wifi available where you camp and only need to boost the signal, there are boosters for that. Check
https://www.technorv.com/rv-wifi-boosters/. If you are wanting to use your cellular Verizon for wifi, you can purchase a wifi router to work with Verizon. They are typically called a hotspot. I think you'll find the "unlimited" plan is actually not truly unlimited. I have unlimited through AT&T and they
"may" throttle me after 22GB per month if needed for network congestion. I've never been throttled in several years though. For quick and dirty
no cost solution, you can hotspot or thether your phone. Another possibility is
https://www.mobilemusthave.com/?AffId=16. They offer devices and reseller options for unlimited data over Verizon and AT&T also.