Latest Facebook 264 user agents:

User Agent	Platform	Device
Mozilla/5.0 (iPad; CPU OS 12_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 [FBAN/FBIOS;FBAV/264.0.0.51.114;FBBV/206803549;FBDV/iPad5,1;FBMD/iPad;FBSN/iOS;FBSV/12.4.1;FBSS/2;FBID/tablet;FBLC/en_US;FBOP/5;FBRV/208102176;FBCR	iOS 12	iPad Mini 4