Why Can't I Make Calls In Some Parts Of The USA?

If you travel outside a cell phone service area, you may be unable to place calls until you get to another service area. Some parts of the United States have no cell phone service depending on the service provider. Major cell phone services offer help locating these "dead zones." A good example is the Verizon coverage locator. Entering in a city and state will tell you whether you may encounter cell phone problems in that area. Parts of Montana, Wyoming and Idaho have "no coverage" areas, which will affect your cell phone reception. The Verizon coverage locator can't give an accurate picture on your cell phone roaming options, but it can help you to anticipate when you may have cell phone reception interruptions.