This is a pretty impressive setup. Recently I lived in an RV for a year and my setup was much more janky than this...
Basically consisted of a gl.inet router that I plugged in a old Moto X4. This allowed me to get wifi from whichever campsite we stayed at (always garbage) and then I would pay for 100GB from Cricket and T-Mobile. I would swap sims when I would run out of data about half way through the month.
Then I discovered I could get unlimited data on Cricket with a regular phone plan if I changed the TTL on the router. Ended up being the most stable option for the last few months.
Basically consisted of a gl.inet router that I plugged in a old Moto X4. This allowed me to get wifi from whichever campsite we stayed at (always garbage) and then I would pay for 100GB from Cricket and T-Mobile. I would swap sims when I would run out of data about half way through the month.
Then I discovered I could get unlimited data on Cricket with a regular phone plan if I changed the TTL on the router. Ended up being the most stable option for the last few months.