I'm working on my iPhone application and I integrated iAd banners in all views of the app, sharing an unique banner object created on the app delegate.
I'm able to display the iAd test banner on the simulator and it works fine, but when I try to install the app on the iPhone 3GS iOS 5.1 from Xcode, the iAd test banner simply is never displayed. All the times I've received the following error, on the banner delegate didFailToReceiveAdWithError:
Error Domain=ADErrorDomain Code=3 "The operation couldn\u2019t be completed. Ad inventory unavailable" UserInfo=0x58dd80 {ADInternalErrorCode=3, NSLocalizedFailureReason=Ad inventory unavailable}
Is this normal?