Smartphones nearly a third of all phones sold in fourth quarter

smartphones made up 31 percent of the mobile device market in the fourth quarter, up from 23 percent in the last quarter of 2008

link: Smartphones: Not Just for The Young and Hip – CNBC

40% by end of 2010? 50% by end of 2011? Reason why:

about 75 percent of the smartphones purchased in the fourth-quarter were priced at $150 or less