Smartphones Have a Mobile Operating System
You can think of a smartphone like a miniature computer that can also place and receive calls. Though there lacks an industry-standard definition of a smartphone, the simplest way to tell a cell phone apart from a smartphone is to determine whether or not the device has a mobile operating system.
Cell phones can typically send and receive text, picture and video messaging. Many cell phones can email, too. Smartphones, though, typically go a step further by syncing with the email server of your personal or corporate provider.http://smartphonenet.blog.com/2010/11/29/how-are-cell-phones-different-from-smartphones/