In a previous life, working as the field service manager for a radio company that installed distributed antenna systems for cellular and emergency UHF radio communications, I recall that "boosters" like wilson were non-selective about what they boosted. Meaning, that they don't just boost whatever Verizon, or AT&T are sending, they boost all frequencies within a specific range, mostly creating a whole lot of RF noise. Particularly in proximity to another booster.
Some customers ( like some hospitals) had installed devices like that, before they called that radio company to assist with a dedicated cell receiver.
A spectrum analyzer showed lots of activity (elevated noise floor?) in the band with the boosters in play.
Of course, this was almost 5 years ago, so things may have changed and boosters may be more selective now..
I got an email from Costco (verified real), telling me that Verizon will not be available in the store.
Then I found this on line:
"no phones at Costco"