title: Data usage from any application
body: <p>I want to read how much data from 3G every app uses. Is this is possible in iOS 5.x ? And in iOS 4.x? My goal is for example:</p>
  
  <ul>
  <li>Maps consumed 3 MB from your data plan</li>
  <li>Mail consumed 420 kB from your data plan</li>
  </ul>
  
  <p>etc, etc. Is this possible?</p>
  
  <p>EDIT:
  I just found app doing that: <a href="http://itunes.apple.com/us/app/dataman-pro-real-time-data/id433617332?mt=8" rel="nofollow noreferrer">Data Man Pro</a></p>
  
  <p><img src="https://i.stack.imgur.com/S1yCy.jpg" alt="enter image description here"></p>
  
  <p>EDIT 2:
  I'm starting a bounty. Extra points goes to the answer that make this clear. I know it is possible (screen from Data Man Pro) and i'm sure the solution is limited. But what is the solution and how to implement this.</p>