title: How to identify iphone (3g,4s,5) version programmatically
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/8426518/how-to-find-iphone-ipod-device-model3g-3gs-4-4s-by-code">How to find iPhone/iPod Device model(3G,3GS,4,4S) by code?</a><br>
    <a href="https://stackoverflow.com/questions/13139430/objective-c-how-detect-iphone-iphone5-and-ipad">Detect device type</a>  </p>
  </blockquote>
  
  
  
  <p>I want to identify iphone's model (3g,4s,5) programmatically.</p>
  
  <p>then How can I find it?</p>