maintaing sync location between ipad and iphone?

So I can't seem to figure this out. I am reading an ibook on the Ipad. I synced the book over to my iphone via itunes. The book open fine on the iphone, but none of my bookmarks, notes, etc. have been synced over. So i have no idea where I left off with the book that I am reading. This functionality is available on the kindle app, which I have used and works fine. Is this feature not available in the Ibook app?