I live here on the "left" coast and my arsenal consists of (1) T mobile primary 55 plus plan cell, (2) a Visible phone on the Verizon network and finally (3) that ToGo data SIM on AT&T network.
There are still times, I won't have a signal but I do also have the WeBoost. I generally use the We Boost with an omni directional antenna and it helps greatly.
Back to the OP's question....two or three points....height of the outside antenna, quality wire between outside antenna and booster and finally separation between the two inside units(booster and indoor panel antenna.
