 <p>When you are worried about the backward compatibility, from advance to the older iOS, the best way is to learn about the difference. Try to understand what have come far from iOS 6 &amp; whats new in iOS7. Please refer this optimizing guide <a href="https://developer.apple.com/library/ios/documentation/userexperience/conceptual/transitionguide/SupportingEarlieriOS.html" rel="nofollow">here</a></p> <p>Also the more precise guide to what you are looking found is well defined here in <a href="https://developer.apple.com/library/ios/documentation/userexperience/conceptual/transitionguide/AppearanceCustomization.html" rel="nofollow">Apple Docs</a> and <a href="https://developer.apple.com/library/ios/documentation/userexperience/conceptual/transitionguide/TransitionGuide.pdf" rel="nofollow">here</a>.</p> <p>I am sure once you are setup with all "the stuff" that defines the differences (ios7 &amp; ios6 transition), you will overcome the problems.</p>