I found for Hundreds of blogs on the net the announced that Google Sync a way of synchronizing your Google Calendars and Contacts through mobile devices is now available for Windows Mobile Phone and iPhone. Finally synchronization app for iPhone and Windows Mobile now added to Google’s services list. Google Sync will keep the user’s phone up to date in terms of calendar events and contacts. It makes your life easier especially when you change mobile phones. You can restore the data to the new phone. You can also make a service backup your contacts and events and reduce the hassle of your phone gets lost.
Google Sync allow you for a two way push sync of Google Calendar and Gmail contacts data to iPhone and windows mobile devices through ActiveSync. It is also available and support SyncML devices.
google always improve their support
I do not know about this before, thanks