[dhgunit]

If there are any cell phone experts here:

How small could you make a phone? If you just wanted to make phone calls and nothing else? Most phones have internal antennas now, how big are they? And how much space would you need to have a phonebook that could hold about 500 names and numbers?

And possibly bluetooth capability?

Also, don't worry about the battery.

I just have an idea for an invention that I got from my job, and I was wondering how small you can go right now.