Latest Facebook 250 user agents:

User Agent	Platform	Device
Mozilla/5.0 (iPhone; CPU iPhone OS 13_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 [FBAN/FBIOS;FBAV/250.0.0.35.219;FBBV/187722014;FBDV/iPhone11,6;FBMD/iPhone;FBSN/iOS;FBSV/13.3;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/18943	iOS 13	iPhone XS Max