I have the most current version of iSilo and I have iPhone 4S. This issue has been happening ever since I've had isilo on previous versions and iPhone models. The issue I have is that when I scroll down by swiping on the screen the document goes back to where I started to scroll from. It doesn't happen all the time but it happens enough to be annoying. It doesn't matter. Where I am in the document it does the same thing.