Facebook Mobile User Counts Revealed: 192M Android, 147M iPhone, 48M ...
As of September 2011, Facebook for Android has 66 million MAU and Facebook for iPhone had 91 million MAU. In December 2011, right before Facebook stopped openly publishing stats, Android surpassed the iOS app. By just 11 months later in November ...
Facebook ports Pages Manager app to Android
Facebook Adding Voice to Messenger App for Android and iOS
Facebook Pages Manager app now on Android