Smartphones accounted for 54% of all phones sold in 2013

"Worldwide sales of smartphones to end users totaled 968 million units in 2013, an increase of 42.3 percent from 2012, according to Gartner, Inc. Sales of smartphones accounted for 53.6 percent of overall mobile phone sales in 2013, and exceeded annual sales of feature phones for the first time.
Smartphone sales grew 36 percent in the fourth quarter of 2013 and accounted for 57.6 percent of overall mobile phone sales in the fourth quarter, up from 44 percent year over year. This increasing contribution of smartphones was led by growth in Latin America, the Middle East and Africa, Asia/Pacific and Eastern Europe, where smartphone sales grew by more than 50 percent in the fourth quarter of 2013. With a 166.8 percent increase in the fourth quarter of 2013, India exhibited the highest smartphone sales growth among the countries tracked by Gartner, and Latin America saw the strongest growth among all regions (96.1 percent) in the fourth quarter. China also contributed significantly to worldwide smartphone sales as sales grew 86.3 percent in 2013."

Source:  Press release from Gartner, 13th February 2014