There are 320 million cell phones in use around the U.S. and about 50 percent are smart phones that are handled all day long. You are more likely to get it through germs through the air, but doctors say you should wash your hands and your phone frequently. A study says cell phones are 10 times as dirty as a toilet seat. Think about how gross a toilet seat is, then multiply it by 10. That touches your face. Read the story HERE