Facebook says it has 845M users with 425M on mobile devices

Facebook announced new usage milestones in its S-1 filing today: 845 million monthly active users including 425 million users who access the service on mobile devices.

The company had last claimed 800 million monthly active users  and 350 million mobile monthly active users at its f8 developer conference in September.

Overall, that means the social network has seen a 39 percent increase in monthly active users since December 2010. It saw particularly strong growth in Brazil with a 268 percent increase year-over-year and India with a 132 percent increase.

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