I don't the model but it is from motorola (very small in size and similar to USB drive).. not exactly USB drive but bigger and around USB drive.
I think Xun Chi 138 is the smallest phone in the world and its most amazing feature is that it comes with touch pad.
recently i have seen a mobile phone with some person. while i am passing on the way to office. I have observed that it is very small at least half of the size while comparing with nokia's small/old mobile handset's. But, i have not seen the manufacturer of that mobile handset.
I have an A100. I don't use it anymore though. Phones seem to be getting bigger and bigger these days. If someone made a TINY phone *not a smart/touch phone*, no internet, built for battery life, I'd buy it. Here's my A100:
Ya u can find the small smart phones in ice cream mobiles. really having a many models and designs in it and very easy to use the mobile.
I just hunting down smallest cell phone on Google. As per its result currently Samsung SGH-E888 and Modu Phone are most smallest phone. Check out these two small mobile phones.