"Embedded Linux powered 14 percent of smart phones shipped worldwide in Q1 of 2005, up 412 percent from 3.4 percent in Q1 2004, according to Gartner Inc. Windows Mobile shipments also grew substantially, rising 50 percent from a 2.9 share in Q1 2004 to 4.5 percent in Q1 2005, Gartner says."

"Of the 180 million mobile terminals shipped in Q1 2005, Gartner says 8.4 million were "smart phones"—devices with complex operating systems such as Linux, Symbian, Palm OS or Windows Mobile. In other words, about 1.2 million Linux smart phones shipped in Q1 2005, along with just under 400,000 Windows Mobile devices."

http://www.eweek.com/article2/0,1895,1839133,00.asp