CIMM DEFINITION: A secure specification that allows users to access information instantly via handheld wireless devices such as mobile phones, pagers, two-way radios, smartphones and communicators. A WAP browser provides all of the basic services of a computer based web browser but simplified to operate within the restrictions of a mobile phone, such as its smaller view screen. WAP sites are websites accessed via the WAP browser.

2: A specification for a set of communication protocols to standardize the way that wireless devices, such as cellular mobile telephones, PDAs and others access and browse Internet-based content. (Source: IAB)