This one was curious to me ... what do you mean? Pictures? Music? "data" as in, files? I don't understand you here.
That said, I think (THINK) that Apple's model is to endeavor to leverage the cloud for all data movement, rather than making things local peer to peer. Noting how they are pursuing the Apple TV zero storage model, I think they are becoming less enamored with local files and local comms.
I am not an expert on this. I am in process of installing android sdk.
In the simplest level, files.
So camera takes pictures, then another app can modify those pictures.
For iphone you can install a PDF viewer. So I installed 3 different ones. But each one is "sandboxed" it has its own file storage.
So the first one can access the PDF put into each other ones file storage.
On a higher level, it appears that there is some sort of COM or OLE, what M$ uses so windoze apps can talk to each other.
So you can link your phone contacts, to a profile on flickr, to a gmail account, to face book etc. I have to study API, but there are like 5-6 apps that come installed that do this.
On HTC apps can put stuff on the main screen etc.
The sandbox model of iphone makes apps a lot safer, but they are "limited".
This is, of course, the essence of the debate between ITTO and me ... which is the right model? My assertion here will be that the rightest model is that both exist

My bitch with apple, is that they are doing "false advertising". IPhone is like singapore, Android is like Philippines. Singapore has very strict rules, you deal drugs you are hanged, you vandalize, spit on the street, flogging. Very strict rules with cars etc. Philippines you can do what ever you want. But when something bad happens to you, don't go crying to the gov't.
Singapore is not a dictatorship in my opinion, because any person there is free to come and go. Other people are free to go there, providing you are self sustaining, and are not a burden on the country. Philippines not an issue with being a burden on the country, because if you can not feed yourself, you die, pretty simple.
But don't go telling people Singapore is like Philippines or vice versa

. Well maybe weather wise they are, and the people in both places are asian but ....

IMHO apple is doing old fashioned advertising. One model fits all. I think that the modern way of sales is products will be tailored to individuals/groups.