title: Getting current device language in iOS?
body: <p>I'd like to show the current language that the device UI is using. What code would I use? </p>
  
  <p>I want this as an <code>NSString</code> in fully spelled out format. (Not @"en_US")</p>
  
  <p>EDIT: For those driving on by, there are a ton of useful comments here, as the answer has evolved with new iOS releases.</p>