title: how to save current state of application
body: <p>I am making an iphone application in which after login we will go through some steps and then finally we make a call from within the app. As we know on making call our app quits so plz suggest me how to resume that state on relaunching the app?<br/>
  1-login<br/>
  2-some steps<br/>
  3-list of numbers<br/>
  4-call</p>
  
  <p>Any help will be appreciated.
  Thanx..</p>