WAP Internet applications can be viewed on WAP-enabled devices. Top cellphone manufacturers such as Ericsson, Nokia, Motorola and Samsung all produce WAP-enabled devices. Access to wireless Internet applications using a WAP device is via a proxy server, or gateway, to the server of the company supplying the information. In the case of cellphones the ISP and the operator are often one and the same. Gateways are managed by several key global companies including CMG, Ericsson, Motorola and Peramon.
Information is requested by the wireless device from the origin server.
The request for information is routed through the gateway which modifies the information in the request so it's readable by the server. Certain technologies such as Push and SMS allow the server to initiate the communication cycle, sending data to the wireless device without a request.