I have a knock off of the Wilson cellular amp that I keep in my truck. It works alright, and has saved my bacon a few times. It doesn’t work miracles, but in areas where you were able to some times get just a blip of service every once and a while, you will get at least one bar of signal with the amp. Outside of areas like that it is hit or miss. I did get great service with it when I got my truck stuck in a canyon and was able to call for some friends to come and help, but on the other hand I still can’t get service on certain areas of the ranch that have a reasonably good path to the local cell tower.

I think I paid $175 for mine.