Signal Booster/Remote Antenna (again)

Before I try tech “support” again I thought I’d ask here. Traveling in my RV I end up in low signal strength areas and being in a big metal box doesn’t help. I looked over the Xfinity web site and found one of the suggested solutions was using a signal booster (https://www.xfinity.com/hub/mobile/5-ways-to-improve-your-cell-phone-signal). With this in mind I purchased an $$$ King Cellular Booster. The problem is, while other carriers have web pages with instructions on how to register a booster/remote antenna (to include the Sprint page), other than the suggestion to use a booster in weak areas, the Xfinity site has no help on how to do this. A call to tech support last year had to be one of the #most frustrating experiences. I was forwarded around the world to various call centers. First I got sales pitches for WiFi pods. I already use them for my home Internet but it has nothing to do with cellular signals. If you don’t already have WiFi a booster won’t help a bit. Their suggestion made it clear the person on the line had no clue about what I was asking. After being passed on to other tech support people over and over I’d be told “Yes, I you can use a cellular booster” but s/he had no idea how to do it. Going to a Xfinity store the person suggested I call Sprint because they manage the network. I tried but without a full Sprint account it was a fail.

Now I’m in the process of buying a new phone and deciding if I want to continue to stay with Xfinity. Without the ability to pull in weak signals in the RV using an external antenna and booster whatever savings I might get from staying with Xfinity is a waste.

Has anyone been able to make use of Xfinity’s suggestion to use a signal booster with their Xfinity account? For any Xfinity person responding, if this isn’t possible than WHY do you continue to suggest it on your website? I trusted it before buying the expensive signal booster that remains unused. Without some way to register the booster the company web page seems to to be false information.