So right now if you take an iPhone, and you bring it to a new computer and want to sync it with that computer, all the stuff on your iPhone gets erased and synced to match up with what is in the iTunes library on that computer. This makes sense - Apple doesn't really want it to be easy for you to borrow a friend's iPhone and import all their apps/music/movies, etc. But if this functionality is similar for iOS 5, it seems counter-intuitive. In other words, they're making a big push to letting someone take their iPhone right out of the box and get going - no PC needed. So lets say my mom gets an iPhone 5, starts playing with it for a few weeks, get some books, apps, music, a movie, etc. Then when she finally does want to plug it into a computer to back it up, will everything get erased as it does now? If someone has any knowledge on the subject, I'd be greatly appreciative!