I was rewatching Steve's greatest keynote - the iPhone introduction. When he made the first public call (with Ive) and then Schiller called in as well, he demoed the iPhone's ability to manage multiple calls and how simple it was. Here it is: http://youtu.be/t4OEsI0Sc_s?t=26m15s For one, that screen at 27:19 doesn't exist anymore. And you can't easily switch at the top like at 27:33. The UI for multiple calls doesn't seem as effective or simple as it was in that demo. What iOS version changed that? Do we know why? Just curious, thank you!