If you head over to Google Mobile Products you'll be able to access a list of countries where Google supports mobile products. This is a fairly new area of the search engine.
I suspect coders will be interested in the
doctypeGoogle uses for these mobile pages.
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">