title: iphone: backgrounded app sync webservice
body: <p>I know this question may be a little bit common and over asked but I cannot find any precise information... so : </p>
  
  <p>Is it possible to have some kind of thread running when the app is in background so I can perform basic sync with my webservice ?</p>
  
  <p>App is in background : I mean the user clicked the Home button, or switched to another app
  basic sync : photo upload and download with AFNetworking. I know it has method to continue an HTTPRequest while app is in background, but this is not my point.</p>
  
  <p>My goal would be to make some kind of sync manager, reading a list of photos to update created while the user was on the app, and perform those changes.</p>
  
  <p>I know that the manager could be killed by the OS, but since my server uses atomic transfers it is not a problem. I just need a way to relaunch it... Push ?</p>
  
  <p>I think apps like Google Latitude or Mail and those kind of apps uses what I am looking for but I cannot find any relevant details on it. And using iOS5 is not a problem but waiting for iOS6 would not be a solution.</p>
  
  <p>Thank you for your replies !</p>
  
  <p>PS : well I almost forgot. the app is designed for an enterprise program, so maybe rules are different ? I don't think there is any check for in-house deployment so it might lead to new possibilities...</p>