I got a mini wide angle lens for my iPhone 4 as part of our annual secret santa exchange at work. The lens is a 2-in-1 and also acts as a macro lens. For $20, the quality is amazing. One problem, with the iPhone 4, the magnetic ring adhesive doesn't stick to the glass iPhone backing very well and keeps falling off plus I really don't like the look of having something stuck to the back of the phone all the time. I came up with a simple solution involving a mini suction cup and part of a binder clip. Since the lens is magnetic to begin with, it sticks right to the binder clip. I bent the clip a little with some pliers to get it just right. Works like a charm.