From latest research from Canalys

Worldwide shipments of smart mobile devices rise 55% year-on-year in Q2 2006

Handheld segment plummets 33%, overtaken by wireless handhelds for the first time

Smart phone shipments increase by 75% compared to one year ago

Nokia retains overall market lead, Motorola leapfrogs RIM, Sharp, Palm to take second

Symbian leads in OS share, with 67%, a year-on-year rise, but a sequential fall

Microsoft in second with share at 15%, ahead of RIM on 6%

More details here http://www.canalys.com/pr/2006/r2006071.htm