To understand why a user might type this exact string into a search engine, it is necessary to unpack each individual piece of the phrase:
Users typed strict short codes and explicit domain extensions. 4G LTE / HTML5 Full desktop-grade sites optimized for smartphones.
The introduction of full HTML browsers on mobile devices, rendering WAP obsolete.
Introduced in the late 1990s and widely used throughout the 2000s, WAP was designed to bring internet content to mobile phones with limited processing power and low bandwidth.