Do you pay attention to which way to hold your iPhone when using the camera on your phone? When taking pictures or shooting video in landscape mode, it does make a difference which way round you hold your iPhone even though the phone superficially caters nicely for any orientation and will nicely display the pictures the correct way in your gallery.
Here we look at the iPhone disconnection problem when trying to backup through iTunes. This problem has been around for years but I have not seen it until a few days ago. This video talks through the solution I found to the problem.