title: App going background and auto lock
body: <p>Is there any difference between- An iphone app going background and phone is getting auto locked</p>
  
  <p>I am developing an iPhone app
  My app resumes its uploading process when it return from background
  But it is not working if unlocked from auto locked</p>
  
  <p>What is the issue..I have tried alot,but could not figure it out..Please help me</p>