 <p>Look in the project build settings for the <em>Deployment Target</em> setting. This is the lowest version of the SDK that you're interested in supporting. If it's lower than 4.0 then all of the pre-4.0 methods will be stripped out by the compiler (since they won't be available on the devices you're planning to deploy to). Try setting it to 4.0 or later; that should help.</p>