Latest Facebook 172 user agents:

User Agent	Platform	Device
Mozilla/5.0 (iPad; CPU OS 9_3_5 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G36 [FBAN/FBIOS;FBAV/172.0.0.46.94;FBBV/108425359;FBDV/iPad3,6;FBMD/iPad;FBSN/iPhone OS;FBSV/9.3.5;FBSS/2;FBCR/Carrier;FBID/tablet;FBLC/pl_PL;FBOP/5;FBRV	iOS 9	iPad 4