I've heard that UIActionSheet is best to use as a popup for the iPhone, but I do not know whether apple will like the following use of the class:
I do not wish to present the user with a choice, but rather notify them when the app looses connectivity. I would love to use a native apple class... is there anything better than the UIActionSheet?
Am I allowed to use the UIActionSheet in this way?
I believe what you're looking for is UIAlertView. It's usually used to provide informational updates to the user, or in your case, connectivity updates, and if need be provide options