If you know about Facebook Zero, they provide free Facebook browsing on mobile phones with several partnered networks around the world. Users open Facebook site with mobile internet but aren't charged.
Similarly, Google is also testing a service called Google Freezone. Users will be able to use Google search, Gmail, Google+ with mobile browser without paying data charges.
Currently Google Freezone is being tested in Philippines but later Google will partner with other providers of different countries to provide free services through mobile browsers.
Google Freezone Philippine page: http://goo.gl/xeplI