Right now the camera on your cell phone does not take very good pictures. This is because the manufacturers are limited by the size of your phone. A good lens that can zoom in on something is large and cumbersome. Recently, scientists have developed an incredibly tiny liquid lens that may replace the current lens in your phone. It can zoom up to 3X and gives the option of adjusting the focal point. Read more about it in these articles:

Wired Magazine

PC Magazine

The Register