Can iPhone programs read and write to the iPhones filesystem, so I can save documents like I do on my Mac?
As far as we can tell, the answer is no. According to Ars Technica’s John Siracusa, iPhone programs can write files to their own “application package” — in other words, the folder in which an app’s own files are stored. But it’s not likely to be a very safe place. However, since all iPhone programs will have access to a SQLite database, it’s likely that programs that need to store “files” on the iPhone will actually do so by saving them into the iPhone’s built-in SQL database. Still, this is one of those areas that’s going to take a bit of time to shake out.
