True, and I've heard that iOS 4 didn't run so well on the iPhone 3G in the first place. However, even once support was dropped, the iPhone 3G was still on the current major version (4.3, a relatively minor update, is the version that dropped 3G support), and it doesn't seem like apps required 4.3 until well after that version was out. That's a big difference than being 1-3 major versions behind on Android (especially considering the rather substantial changes in each major version of Android).