Facebook only as good as that guy's Samsung Galaxy S2

Facebook develops "year class" to help optimize itself, in part, against Android fragmentation:

The company reports that "overall, about two-thirds of the phones connected to Facebook are equivalent to something released in 2011 or earlier," which would mean that 66 percent of the installed base of Android users accessing Facebook are on the level of an iPhone 4 (or as Facebook's graphic indicates, a Samsung Galaxy S2, which shipped with Android 2.3 Gingerbread).

Facebook says 66% of Android phones it sees have iPhone 4 era specs from 2011 (or worse) | AppleInsider

Given what my iPhone 5s Facebook experience is like, Galaxy S2 Facebook has to be so ugh.