Mr. Antonucci said he turns off Verizon Wireless's 4G LTE connection while in his office at a casting agency, though he uses the high-speed mobile network to watch basketball games at home.

WSJ: Fast Phones, Dead Batteries

In July, I wrote about one part of this evolution where mobile games developer Social Gaming Network launched the first game ever to let iPhone and Android users play each other in real-time.

FORBES: Connect

So in October, Facebook rolled out a new ad program so developers could pay the social network to promote mobile installations of their games.

WSJ: Even Facebook Must Change

These reductions, along with our ongoing efforts to implement more stringent budget and resource allocation around new games and partner projects, will improve our profitability and allow us to reinvest in great games and our Zynga network on web and mobile.

ENGADGET: Zynga shutters Boston, UK and Japan studios, lays off 5% of full-time staff

Facebook also makes some money off Facebook games like Farmville, which share revenue with the social network, but is hoping to move beyond just Zynga to become the "default" platform for mobile games from all developers.

CNN: Facebook mobile users surpass desktop users for first time

Previously, Facebook expected to profit from the sale of virtual goods in mobile games, much like how it takes a cut of such sales from desktop games that run atop the social network.

WSJ: Even Facebook Must Change