Big Bart
Tow&Slow
It's a matter of lack of coverage. As in, there is no signal that my SIM is allowed to connect to. Visible is owned and run by Verizon but it's more like old Sprint coverage areas of 15 years ago. They use Verizon towers and have zero roaming. And not all Verizon towers have Visible service being broadcast, so I have been told by Visible support.
Ok that makes much more sense now, when you wrote "cell service" I did not understand it was actually Visible cell service. It sounded like you meant there was no cellular service in those areas. What a bummer they block you from being able to roam so you can get better coverage. I guess it’s that old adage you get what you pay for. (Upside is they do have low prices.)
I have been with Verizon for 30 years and pay more than most. But their coverage is hard to beat. I feel they must have the most extensive roaming contract base. Heck I even get coverage at my cousins cabin out in the middle of Federal park south of Flagstaff and at my buddies cabin way off the grid by Seligman, AZ. (Think route 66)
So hopefully the SIMM card from Walmart will tide you over till you move down the road.
I would worry on a big trip like yours if I break down, had an accident, or had a medical emergency I might not be able to make a call.
Now to bring this back to Oilburners.net.
The older gentleman I bought my IDI from bought it in 1988 to pull his 5th wheel travel trailer. His idea of being connected was probably a CB radio, pager, quarters for the pay phones, a road Atlas, travelers checks, AAA guide to RV parks, and his analog TV.
Now in the 21st Century you have the luxury of digital TV, cell service, cellular WIFI, text messaging, video conferencing, GPS, ATM card for 7x24 banking, Venmo, Zelle, online banking to pay those bills or deposit checks or move money, music and video streaming, online RV park reservations, and the internet!
We have come a long way to making travel easier and more enjoyable in time since Ford built my 88 F250 IDI.
Safe travels Cubey and keep those pics coming.