What is the impact of the "Requires full screen" option in Xcode for an iPhone-only app?
<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>

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