We have Sprint and live in Utah. We travel extensively and visit family in many areas. Our Sprint has worked in 90% of the areas. It is not cost effective for any cell company to spend thousands to cover 5 residents in remote areas, interstates serve thousands a day so coverage makes sense. I am posting this in Kansas in a remote area using my Samsung S3. Other phones in area have little to no coverage. Remember cell signals are line of sight, can't see a tower with binoculars you probably wont have a signal.