We already knew Facebook’s various mobile apps were popular, be they on Apple’s iPhone or iPad, on devices running Google’s Android operating system, or even on BlackBerry devices and feature phones.

But the company hadn’t released the exact numbers on its mobile “monthly active users” (MAUs) since September, as TechCrunch reports, when it revealed that it had about 350 million mobile MAUs. But with the filing of Facebook’s initial public offering this week, the company also revealed that in December it reached 425 million mobile MAUs, out of 845 million monthly active users across all platforms.

Source: Yahoo! News: Software News