WAP is an open global standard for application that uses wireless communication. Its main application is to allow access to the internet from a mobile phone or PDA.
A WAP browser is to grant all of the fundamental services of a computer based web browser but cut down to function within the limits of a mobile phone. WAP is now the protocol used for the mainstream of the world's mobile internet sites, known as WAP sites. Presently the Japanese i-mode system is the only other major competing wireless data protocol.
Mobile internet sites, or WAP sites, are websites written in, or vigorously transformed to, WML (Wireless Markup Language) and accessed via the WAP browser.
Before the introduction of WAP, service providers had enormously restricted opportunities to offer interactive data services.