Currently Being ModeratedApr 7, 2012 7:47 AM (in response to ralphiedee)
Books made with iBooks Author only work on iPad, sorry.
If you want a book for both, you should use something that outputs a compatible e-pub file, such as with Pages.
Currently Being ModeratedSep 21, 2012 12:05 PM (in response to K T)
Thank you for this info. I also just did a photo-heavy book with iBooks Author and was trying to test in on the phone (a friend is testing it on iPad) and iTunes wouldn't let me do it. I was getting an iHeadache! Just converted to pdf in Author and now converting to epub file to test on phone.
Everything else posted was telling me I was an idiot for manually syncing my music and such for the iphone :/.