title: What is the impact of the "Requires full screen" option in Xcode for an iPhone-only app?
body: <p>For an iPad-only app or a universal app, the <code>"Requires full screen"</code> option tells Xcode/iOS whether the app supports iPad multitasking feature introduced in iOS 9.  But the <code>"Requires full screen"</code> option is also present if it's an iPhone-only app.  In this case, what is the impact of this option?</p>
  
  <p><a href="https://i.stack.imgur.com/waYZq.png" rel="noreferrer"><img src="https://i.stack.imgur.com/waYZq.png" alt="enter image description here"></a></p>