WhitePages.com
m.whitepages.com (xhtml-mp/wml)
WhitePages.com is a free, full-featured mobile phone directory for the US and Canada. The site offers Yellow and White Pages searches, reverse phone number lookup, reverse address lookup and zip code and phone prefix look ups. Results include click to call phone numbers, street address, map and driving directions.
Superpages
yp108.superpages.com/ (xhtml-mp)
yp108.superpages.com/cgi/cs_clie... (wml)
Yellow Pages, People Search, Reverse Phone Directory. plus weather and a search for movies playing nearby with times, directions, cast list, and plot synopsis.
On non-smartphones, the user interface is a bit clumsy and not always logically laid out . For example, people search accepts city/state but not zip code. In the movie search if you select "New Arrivals" which is the first link on the page you get the message "Select Location First". Location is the last link on the page!
Smartphones are served a touch optimized version of the site that has much better usability.
Go2
m.freemobile411.com/ (xhtml-mp)
Mobile directory search for US addresses only. Search by zip code or address for a Business name or category or find a person by name. FreeMobil411 returns the address and click to call phone numbers. The businesses or residence address is displayed on a Mapquest Mobile map.
The Phonebook (UK)
wap.thephonebook.com/ (xhtml-mp)