However, the company is still in the early stages of leveraging its mobile growth, executives said.
Facebook posted net income of $64 million for the quarter, representing a profit for the first time since the company went public last May. It reported a net loss of $59 million during 2012's third quarter. However, the fourth-quarter profit was down more than 78% from the $302 million that Facebook earned a year earlier, before it was publicly listed.
Total annual revenue increased 37% to $5.09 billion.