Mobile Compatibility List
From Zarafa wiki
Zarafa enables end users to work with mobile devices using different technologies. End users can use BlackBerry devices by using the BlackBerry Enterprise Server (BES) or BlackBerry Express Server. Any other mobile device using ActiveSync (Windows Mobile, iPhone, Android, certain Nokia models etc.) can use Z-Push (http://z-push.sf.net) for push mail and calendars.
The attached document is an overview of the status of compatibility of different devices and software versions when using BES or Z-Push.