title: Is it possible to use iPhone Simulator 3.1 from XCode 3.2.3?
body: <p>Because the Simulator 3.2 and 4.0 in the SDK 4 do NOT actually work for iPhone simulation (which always comes out iPad and not responding at all), I ended up with 2 SDK installations, using SDK 3.1.3/Simulator 3.1 for simulation, and SDK 4 for building onto the iPhone with OS 4. (More details <a href="https://stackoverflow.com/questions/2708003/xcode-3-2-make-emulator-to-open-in-iphone-mode/3119532#3119532">here</a>.)</p>
  
  <p>I tried to use the old Simulator 3.1 from the SDK4-XCode 3.2.3, e.g. by copying the full "iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator3.1.3.sdk" directory into the corresponding XCode3.2.3 directory, and choose the Simulator-3.1.3 (which does appear in the "Active Executable" list), but it cannot build, with more than 30 errors, e.g. </p>
  
  <blockquote>
    <p>Undefined symbols:<br>
    "_OBJC_CLASS_$_NSURLConnection",
    referenced from:
          objc-class-ref-to-NSURLConnection in
    GRACEViewController.o<br>
    "_OBJC_CLASS_$_NSString", referenced
    from:
          objc-class-ref-to-NSString in GRACEViewController.o</p>
  </blockquote>
  
  <p><strong>Is there a way to use Simulator 3.1 (instead of Simulator 3.2 or 4.0) when using XCode 3.2.3 (which is a must to build into iPhones on OS 4) ???</strong></p>