Is there any property or other mechanism in iPhone OS to check during runtime whether application is running on iPad 3G or iPad Wi-Fi? Seems like UIDevice class does not provide
I assume that other than 3G networking capabilities, there is no need to make a difference. Using Reachability.h class provided by Apple you can check if internet connection is available and if it is Mobile network or Wireless network.
Sample code here: http://developer.apple.com/iphone/library/samplecode/Reachability/Introduction/Intro.html
The Reachability class provides the following values:
ReachableViaCarrierDataNetwork
, ReachableViaWiFiNetwork
or NotReachable
.