I am using an iPhone for the first time and have previously (and continue to still use) been using facebook on Android for a long time. Why doesn't the YouTube app launch straight away when you click a YouTube video within facebook rather than it launching the mobile web version? In Android all YouTube videos launch directly to the YouTube app. It's frustrating when you want to view the selected video in the YouTube app and not in the rubbish mobile web version of YouTube. This is also the case for What's the point of having all these apps on the iPhone if they can't speak to each other?