During the Facebook Q4 earnings call earlier this week, Mark Zuckerberg hinted that Graph Search for mobile devices is in development, though he wouldnt go into specifics about when it would launch. Just got Graph Search on the Facebook app pic.twitter.com/NPXhWUgKtK — Seth Fiegerman (@sfiegerman) February 1, 2014 A Facebook representative later confirmed with The Verge that the company has indeed started a small test of the navigation for mobile Graph Search. The move jibes well with Facebooks ambitions — the company already plans to release a whole suite of apps for smartphones in 2014.