Internet connectivity in iphone when application is minimize

i want to check for internet availability in whenever my application make call to webservice during my application was minimized. I had done some google work and found this :- How to check for an active Internet connection on iOS or OSX? http://forums.macrumors.com/showthread.php?t=635200开发者_运维问答

But this doesnt not gives me how do i check when application is minimized i.e paused!! please help me

When your application is running in background mode you cannot check for internet connectivity. You can run audio, VOIP or location services in background mode. Any open or listening sockets will be closed when the application enters background mode.