Research analysts at Canalys Ltd. conclude (http://www.canalys.com/pr/2005/r2005041.htm) that converged devices (smart phones and wireless handhelds) are driving the growth of the mobile device market with Symbian OS representing a total market share of 60%. Some key points:

Overall global shipments of smart mobile devices up 82% year on year in Q1 2005;
Handhelds down 6%, but converged devices (smart phones and wireless handhelds) up 137%;
Nokia ships 5.4 million smart phones to give it 50% market share;
PalmOne growth slows to 1%, lead over RIM and HP shrinks;
Fujitsu becomes second largest provider of Symbian-based handsets.

Regarding PalmOne the reports states that handheld shipments fell 27%, but this was counterbalanced by the continued success of the company's Treo smart phones in the US. Around 40% of palmOne’s device shipments are now accounted for by Treo smart phones, up from 17% a year earlier.

Handheld shipments may have fallen 27%, but that doesn't necessarily reflect weak market. They haven't really supplied the same kind of competitive product as previously done. And the T5, which is nice, has has some sw compatibility issues because of the new memory management, I assume. Should pick up when those issues get worked out over time in 3rd party applications. And those solutions should carry over into upcoming new models, hopefully, also.