I gave up on the big carriers and moved to a smaller company that resells the same service -- this is how Cricket and some of the other companies work --- you're getting the same network just at a discount and possibly being "Deprioritized" a bit - but its never been a problem. I use '
Red Pocket' for both my phone service, as well as a hotspot plan.   Its like $20 month for the phone, and $40 a month for the hotspot.   20 gigs of data for $40 isn't bad.   They'v been really good so far, and aren't doing anything jenky like Nomad Internet or ConnecTEN are doing -- both fo which I have used.
The Data speeds are about 3-4 megabit, but I've seen much faster.   This is enough for YouTube (not 4k, but HD), remote desktop, and video calling.   I was able to work remotely using this a couple of times.   Even with my wife doing the same -- the video did 'pixelate' a bit at that point but it was still usable.   I mean, really, 9 times out of 10 on video calls I would turn off my camera anyway in which case audio was fine.
This might not be ideal in congested areas where the cellular networks aren't built up - but int he past 5 years, I've seen a marked improvement in coverage.
All that said...Starlink is faster than that, and theoretically has coverage everywhere.   The only down side is that it doesn't fit in my pocket, needs a lot more power (7 amps)  Stricly for the "RV" -- The Starlink value proposition is really good.  
While in Texas last week, I saw a couple of mini's in front of the parked RVs.  The "antenna" is really shrunk!!!  I didn't see any people to ask if they liked it, but I assume it worked -- it was there.   The trees were dense with exposed sky basically above the 'camp-ground loops.   I'm not sure how being farther south impacted this...its got me thinking
The only downside is that you effectively need 110 volts --- the Starlink is 60 watts, which will suck a Group 24 battery dead in short order.  6 amps is a chunk of power.   Even a LI battery would only give you about 10 hours if my arithmetic is right.   Which is always questionable this early in the day 
