I know exactly what you mean by this! I can always tell if it was taken on an iPhone -- not that it looks bad, or anything, but there's always a few little cues

I know exactly what you mean by this! I can always tell if it was taken on an iPhone -- not that it looks bad, or anything, but there's always a few little cues that make it obvious. As you mentioned, I think the motion is a large part of it.