How to differentiate between iphone4 and iphone 3

Question

I am trying to build a game for the iphone using cocos2d engine. I wanted to know how can I tell a difference whether the user is using iphone 4 or iphone 3 as I wanted to l

Answer 1

scale is available for iPad, however you can always use if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) to check whether it is iPad or iPhone/iTouch