If your phone is too small to let you dial, then it is probably called the Xun Chi 138. It is definitely the world’s smallest phone. As you can see from the photo, it’s a hair’s breadth larger than a AA battery. It weighs in at just 2 ounces.
It does have a camera, though, a 1.3-megapixel one, an MP3 player and a USB port.
It supports only Chinese character recognition, so non-Chinese-speakers might not have to worry about it. If you’re interested, though, you should know to make or take calls, you will need to plug in a headset and use a stylus.