title: How to get device make and model on iOS?
body: <p>I was wondering if it's possible to determine what kind of iPhone (for example) the currentdevice is? I know it's possible to get the model through<br>
      <code>NSString *deviceType = [[UIDevice currentDevice] model];</code><br>
  which will just return whether I have an "iPhone" or an "iPod", BUT I was wondering if it's possible to detect/know if I have an iPhone 3GS vs. and iPhone 4 vs. an iPhone 4S <em>(in actuality, all I really want to do is determine if I have a 3G or not, because I'm doing fairly graphics intensive stuff)</em>. </p>
  
  <p>So yeah, let me know, thank you!</p>