Here's my "setup" using my old iPhone 4S. Actually, since we just bought a 5S for my wife, I'll probably start using hers going forward.
Unfortunately, I did quite a bit of photography before I thought to anchor things down with a rubber band. Some of my shots were not the most clear:
But others did turn out pretty sharp:
If I'm bored sometime I will reshoot many of the less stellar efforts.
Nothing beats PCGS TrueView, though: