I recently ran into a problem connecting my Instagram app on my iPhone 5 to Facebook, and neither Instagram's or Facebook's help pages were as helpful as they claim to be.
Instagram 3.4 is supposed to have improved sharing integration for iOS 6, supposedly making the connection to Facebook simplified and seamless on an iPhone 5.
Once you first try to share a photo on Instagram to Facebook, it will tell you to go to iOS Settings -> Privacy -> Facebook and then turn on Instagram to give it access. If you're lucky, it will be as simple as that. But if you're like me, you'll never even see... more