And mobile daily active users passed web users for the first time.
At the end of Q3 Facebook said its summer-launched mobile advertising initiative accounted for 14 per cent of total ad revenues over the quarter, shy of the third that was predicted by analysts.
The social behemoth has now released Q4 financials and mobile is now playing a more integral part to the firm's business than ever before. This time around mobile ads accounted for 23 per cent of total revenues, suggesting we can expect growth again in Q1.
Overall Q4 revenues grew by 40 per cent and reached $1.6bn, a 40 per cent year-on-year climb, with advertising accounting for 84 per cent of all revenue.
Facebook reports a total of 1.06 billion monthly active users as of December 31st at a 25 per cent year-on-year growth, while daily active users hit 618m at a 28 per cent year-on-year rise.
As for mobile, monthly active users rose 57 per cent year-on-year to 680m, while daily actives exceeded web users for the first time.
Mark Zuckerberg, Facebook founder and CEO, said: "In 2012, we connected over a billion people and became a mobile company. We enter 2013 with good momentum and will continue to invest to achieve our mission and become a stronger, more valuable company."
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