I have been using Wilson boosters nearly 20 years, and that has included several different models. When the phone companies upgrade their signal, it requires a new booster suited for the new technology. All of them worked great until the latest one. I can't get this one to be reliable. It works well at times, and others it just fades away. I have a Yagi antenna and all sorts of equipment I've used through the years, but no combination works very well.
But, honestly, I don't know if the problem is with the Wilson booster or the VZ signal. I used to be able to talk on my phone most anywhere, but the VZ signal is nothing like it used to be. I think their 5g signal is geared towards data in big cities and is not concerned with rural areas. We will be remembering the good ole days when mobile phones used to work when you were traveling.