When delivering mobile BPM solutions; what are your experiences of the preferred and or most prevalent mobile devices in use?

Based upon a number of current live Mobile BPM deployments and feedback from a series of MBPM webinars we have run this year, the picture seems to be that the mobile device market place still remains somewhat fragmented.

Our experience is that no one player has become or is becoming dominant.

The most prevalent devices are not surprisingly: the Blackberry, the iPhone/iPad, Windows Mobile Devices and Android devices, but most organisations either have not set or even started to consider setting, a corporate preference or standard for which devices their users will have.

I would be interested in hearing your point oif view on this?  Thank you.