There is a new service which enables Wikipedia access on your mobile, it' called Unyverse
. It is smart client application running on your Java , Siambian or Windows Mobile Phone.
It has nice advantages over the pure WAP/WEB access:
1) The reading experience is better I think because your can scroll page by page and adapt the font size
2) You can bookmark articles and retrieve them on your unyverse web account
3) You read access offline all your previously downloaded articles, which is usefull when there is no or slow network data coverage.
4) It is faster because the entire article content is downloaded compressed, then you can read any section instantly
There is a nice demo on You Tube