title: Making iPhone App iOS 5 Compatible
body: <p>I have developed the app using Base SDK 4.3. </p>
  
  <p>I want to make sure my app is iOS 5 compatible. </p>
  
  <p>In that case, should I change my base SDK to 5.0 or keep it at 4.3 and test it in iPhone 5 Simulator?</p>
  
  <p>Please let me know.</p>
  
  <p>Thanks!   </p>