Also known as "WAP", "Wireless Web", or "Mobile Web". This feature means that the phone contains mini-browser software that will let you navigate various services through the Internet, shown on the phone's display.
Most phones with Wireless Internet can only display pages specifically designed for phones - they cannot display most full web sites. Some newer phones can also display full web sites, although how well the page fits on the display varies depnding on the mini-browser software.
Some traditional web sites do offer versions specifically designed for phones, however frequently only a fraction of the content or services are offered in the wireless version, such as features that are time- or location-sensitive.
Several different standards exists: HDML, WML, cHTML, and xHTML. Older phones support HDML and WML. Most new phones support WML and xHTML. Some phones also work with cHTML, the standard behind NTT DoCoMo's i-Mode service, which is found in Japan and parts of Europe.
xHTML, which is related to WAP 2.0, is the standard that the industry is converging on.