title: Login via native Facebook iOS app from mobile webpage
body: <p>I know various flavors of questions on similar topics are around, but I couldn't find the exact situation I'm look for. I have a "Login to Facebook" button on a mobile webpage on my domain on iOS (in Safari). If the user has the native Facebook iOS app installed, I'd like to have them login through native FB iOS app [instead of being forced to login via the mobile FB website, where are they unlikely to be logged in already].</p>