Latest Facebook 14 user agents:

User Agent Platform Device
Mozilla/5.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Mobile/12A365 [FBAN/FBIOS;FBAV/14.9.0.33.26;FBBV/4302539;FBDV/iPhone4,1;FBMD/iPhone;FBSN/iPhone OS;FBSV/8.0;FBSS/2; FBCR/T-Mobile;FBID/phone;FBLC/es_LA;FBOP iOS 8 iPhone 4S
Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D257 [FBAN/FBIOS;FBAV/14.1.0.25.26;FBBV/4228546;FBDV/iPhone3,1;FBMD/iPhone;FBSN/iPhone OS;FBSV/7.1.2;FBSS/2; FBCR/DIGITEL;FBID/phone;FBLC/es_LA; iOS 7 iPhone 4
Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_1 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D201 [FBAN/FBIOS;FBAV/14.9.0.33.26;FBBV/4302539;FBDV/iPhone3,3;FBMD/iPhone;FBSN/iPhone OS;FBSV/7.1.1;FBSS/2; FBCR/Verizon;FBID/phone;FBLC/en_US; iOS 7 iPhone 4
Mozilla/5.0 (iPad; CPU OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D257 [FBAN/FBIOS;FBAV/14.9.0.33.26;FBBV/4302539;FBDV/iPad3,3;FBMD/iPad;FBSN/iPhone OS;FBSV/7.1.2;FBSS/2; FBCR/;FBID/tablet;FBLC/es_LA;FBOP/1] iOS 7 iPad 3
Mozilla/5.0 (iPad; CPU OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D257 [FBAN/FBIOS;FBAV/14.9.0.33.26;FBBV/4302539;FBDV/iPad2,2;FBMD/iPad;FBSN/iPhone OS;FBSV/7.1.2;FBSS/1; FBCR/movistar;FBID/tablet;FBLC/es_LA;FBOP/1] iOS 7 iPad 2
Mozilla/5.0 (iPad; CPU OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D257 [FBAN/FBIOS;FBAV/14.0.0.25.26;FBBV/4017285;FBDV/iPad4,1;FBMD/iPad;FBSN/iPhone OS;FBSV/7.1.2;FBSS/2; FBCR/;FBID/tablet;FBLC/ru_RU;FBOP/1] iOS 7 iPad Air
Mozilla/5.0 (iPad; CPU OS 7_1_2 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D257 [FBAN/FBIOS;FBAV/14.0.0.25.26;FBBV/4017285;FBDV/iPad2,5;FBMD/iPad;FBSN/iPhone OS;FBSV/7.1.2;FBSS/1; FBCR/;FBID/tablet;FBLC/en_US;FBOP/1] iOS 7 iPad Mini