On both my iOS devices, with current OS and updates, a full-screen product view isn't actually full screen.
It winds up being a strange floating window anchored to the left side of the screen, only covering about 2/3 of the width. Sometimes it takes up the full height of the window, sometimes not. Rotating the device between portrait and landscape yields interesting effects, most noteably sometimes having to figure out where the windows went, by zooming outward.
Is this on anyone's radar?