I live in an area where the Sprint signal outside is very good. My problem is that our house is made of 8 inch limestone blocks. Not much signal penetrates the stone. I put in a repeater that uses a directional antenna outside and wires into a repeater inside so the inside signal is now as strong as the outside signal. I purchased ours from jdtech.com, its the cheapest they have and it works fine. The more expensive models will cover a larger area with signal but we really didn't need that.

R