how to run background process on the iOS using private APIs to sync email items without jailbreaking the phone

Question

I\'m working on an enterprise application, which is similar to contacts, calendar. I would like to sync my calendar and contact even when my application is in background. I\

Answer 1

If this is an enterprise app and you're not submitting to Apple then I would explore having your app identify itself as a VOIP app. Then you can set a keepAliveTimer and get get periodic processing time in the background to do what you need.