[JKT]

Seems not. I'd like Apple to add a way to eject your iPhone from the actual phone so that you don't have to be logged into your own account to do so. It's a real pain when you have to switch between users just to be able to take your phone with you...

[Simon]

IIRC removing it after it has sync'ed w/o actually ejecting it should cause no real trouble.

[Mac User #001]

Yeah, you can remove it when it isn't syncing with no consequences.

[Laminar]

Can't you set up the iPhone to be mounted as a flash drive as well? In that case, you would need to "eject" it.

[Simon]

That's the point, you can't. Nothing's mounted, so you can just remove it.