An estimated 240 million emergency 9-1-1 calls are made from phones in the United States each year, with least 80 percent originating from wireless devices, according to the National Emergency Number Association.

Among those calls are an increasingly unhealthy number of 9-1-1 misdials, many coming from newer models of some cell phones and smart watches with a feature that activates an automated emergency call when side buttons are pressed multiple times — often accidentally… READ MORE