the Fisheye, Telephoto, and Macro/Wide Angle Cell Phone Lenses. These finely constructed lenses transform your standard phone photos into wide, up-close, super zoomed and wonderfully warped wonders.
They work with any camera phone and attaching them is easy breezy! A detachable magnetic ring sticks to your cell, providing a sturdy, shake-free hold between the lens and your phone. – photojojo