I didn't read all the posts here, so I may be repeating what someone else has already addressed. For us, it was a building - discovery process to finally put together a system that works for internet use, including streaming video on our Roku televisions.
Without going into the long history, here is the final outcome.
We use Visible and recently upgraded to the 5g system. It's now $45 a month for truly unlimited internet. We purchased a ZTE $79 phone from Visible that is dedicated only for our internet use. Although it has a phone number, we never us it.
Visible's limitation is, you can connect only one device to it at a time, if that means using the phone's hot spot or using a hard wire, only 1 device can be connected at a time.
Enter a portable wifi router (1 device) that hard wire plugs into the phone. We ended up with a Gl iNet router
click here and we now use this one (this is our second router) from them, the first one died after 2 years
This one, click here.
Now, 2 Roku televisions running streaming video, 3 laptop computers (all company laptops working from home) and 1 personal laptop and 1 ipad all work flawless at the same time.
Move forward in time a little more...
We've traveled a LOT over the last 2 years. Covid did not stop us at all. We traveled and worked from the camper, and had a marvelous time.
It wasn't until this year we landed in a few campgrounds that had very, very poor phone service. We also have AT&T phones and data plans on them. Sometimes, neither worked, or worked very poor.
Enter
weboost... click here! ... specifically,
this one, click here! And then we went back to some of those campgrounds that had almost no phone service at all, and PRESTO! We had streaming video again!
Here's some photos of our "test run". We took the whole kick'in-ka'boot-al with us without the camper. It worked great at 2 different Indiana State Parks where we had no hot spot service and extremely bad phone service with both AT&T and Verision.
Did it cost? Yes.... The weboost runs over $500, but it's a one time purchase. The phone ran $79, a one time purchase. Visible service is $45 a month for truly unlimited service, and can be canceled at any time, dropped, and picked up any time again, no contracts, no long term commitments, month to month, easy peasy! The Gl iNet router cost about $40, a one time purchase. The stand for my weboost antenna $0! I made that out of scrap lumber given to me that came out of an old barn.
We have found, that if we have only 1 bar on the phones, the weboost works great! It also improves our AT&T phones and the internet quality on them too, in addition to the AT&T hot spots.
We are currently at an Indiana State Park we have not been to in a long-long time, because we could not get phone service or internet service here. We've been here for a week now, and my wife's company laptop is working just fine. (I'm retired now) but that Roku television is doing fantastic, as is my personal laptop, from where I am typing this post at this very moment.
Well, that's how we do it.