Can a Cell Phone Booster work in this? More tests on the HiBoost

In the second of two parts, I do more in-depth testing to see if the HiBoost Travel 4G 2.0 RV Cell Phone Booster is suitable for my small fiberglass trailer. The results were a little surprising! I also get to try a few of my viewer's suggestions to improve performance. The speed app I used is "Network Cell Info Lite" which is available at Google Play Store.

UPDATE 2/24/2022: After correspondence with HiBoost, I received a response to a very specific question: "Is this system suitable for a fiberglass RV?"
Their answer: "Yes, our booster is suitable for fiberglass RV. But for fiberglass RV, the coverage range seems not good enough if compared with metal (roof) RV. The booster could provide a wider range if it is used in a metal (roof) RV."

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Products Mentioned in this video (Amazon Affiliate Link*):
HiBoost RV Cell Phone Booster: https://amzn.to/351VY5q

My Equipment (Amazon Affiliate Links*):

Camcorder: Sony FRD-AX53: https://amzn.to/3fqW7jd
Osmo Action Camera: https://amzn.to/2QCSUlh
Action Camera stabilizer: https://amzn.to/35nRXD2
Main Camera: Sony A7Sii: https://amzn.to/2J9voXk
4K Sports Camera: https://amzn.to/2Dtsygn
Zoom Field Recorder: https://amzn.to/2WrLZQU
Shotgun Mic: http://amzn.to/2kOJqqY
Tripod: https://amzn.to/2X0Vk0P
Editing: Powerdirector 17: https://amzn.to/2KqY8gC
Sports Chair: https://amzn.to/3cPTS7U
MPPT Controller: https://amzn.to/2LHgM5t
Portable Power Station: https://amzn.to/2LEZt4Z

How I get around:
Trailer: 2008 Outback by Trillium https://trilliumtrailers.com/
Tow Vehicle: 2010 Jeep Liberty, 6 cyl 3.7L gas engine, 4WD, over 220,000 km

* Amazon Affiliate Links provide me with a very small percentage of the sale with no additional cost to the buyer. Please support Slim Potatohead by using my links for any Amazon purchase. Thanks!