A lot of my time during my work day is spent in areas with varying degrees of cell service. Some pretty good to a lot of areas with very poor cell signal. Just 3 days ago after installing the drive reach OTR system, I was in an area that is usually very poor cell signal, but with the drive reach in operation, not only did I have good enough signal for phone calls and text messages, I checked and I could even browse the internet on my iphone. A guy standing several yards away from me was trying to make a call on his phone and could not get his phone to connect due to his very poor signal. It has been awesome since putting this drive reach system in my work truck.