WAP gateway enables accessing internet content from mobile phones and thus provides added value to end-users of GSM services. Additionally, WAP gateway makes it easier for the Mobile operator to implement new VAS (value added services) like advanced data and telephony services.

WAP gateway acts as a gateway between the mobile phones and the mobile network on one side and the Internet on the other side.

WAP gateway implements the standardized Wireless Application Protocol (WAP), which is an access protocol standard suite, developed by WAP Forum. The protocol is a client/server protocol where the client has limited processing power, memory and small screen size, e.g. a mobile phone.