When converting some iOS apps from iOS6 to iOS7, I came across a very strange bug. I had an app with tons of views and view controllers, and on the right side of the screen, touches wouldn’t be recognized. (For buttons, gestures, scrolling, etc.) It was quite obvious that one of the views frame’s wasn’t covering that part of the screen. The easy way to figure out which view it is is to add:

    self.view.clipsToBounds=true;

inside each viewDidLoad, verify that the dead zone is no longer visible, and then slowly remove the clipsToBounds calls one at a time until the dead zone is visible again, and you’ve found the offending view! Then take whatever steps you need to adjust that view properly.

In my case, a view had a frame (0,0+768,1024) for a landscape view. Changing this to (0,0+1024,768) resolved the issue. Oddly enough, either sized frame didn’t cause iOS6 to have issues, just iOS7.