Apple push notification not changing icon badge automatically

Question

I have seen the mail app in my iPhone (4S, iOS 5.1) automatically updates the badge count if new mail arrives, even when app is not running. So it is possible to achieve thi

Answer 1

The issue is now fixed. The provider server was sending the badge number in quotation marks (as JSON String, i.e. "9"). Strange that APNs/iOS does not recognize it as integer. Now the quotes are removed and it works :)