Latest Facebook 64 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.3; es-us; G630-U251 Build/HuaweiG630-U251) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Ascend G630
Mozilla/5.0 (Linux; U; Android 4.2.2; en-us; Micromax A47 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 A47
Mozilla/5.0 (Linux; U; Android 4.1.2; pt-br; LG-E475f Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Optimus L1 II
Mozilla/5.0 (Linux; U; Android 4.1.2; pt-br; GT-S6810B Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Galaxy FAME
Mozilla/5.0 (Linux; U; Android 4.1.2; es-us; GT-I8260L Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Galaxy Core
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; ZTE-Z740 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Z740
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; HUAWEI C8813DQ Build/HuaweiC8813DQ) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 C8813DQ
Mozilla/5.0 (Linux; U; Android 4.1.1; en-us; ZTE-Z992 Build/JRO03C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Avail 2
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; Huawei-U8687 Build/HuaweiU8687) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 U8687
Mozilla/5.0 (Linux; U; Android 4.0.4; en-ca; SGH-S730M Build/IMM76D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Galaxy Discover
Mozilla/5.0 (Linux; U; Android 4.0.3; es-mx; LG-E612f Build/IML74K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Optimus L5
Mozilla/5.0 (Linux; U; Android 4.0.3; en-gb; HUAWEI U8815 Build/HuaweiU8815C02B952) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 U8815
Mozilla/5.0 (Linux; Android 5.1; LG-AS811 Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/45.0.2454.95 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 5 AS811
Mozilla/5.0 (Linux; Android 5.1.1; SM-G531F Build/LMY48B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 5 Galaxy Grand Prime
Mozilla/5.0 (Linux; Android 5.0.2; LG-F540L Build/LRX22G; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/64.0.0.10.76;] Android 5 F540L
Mozilla/5.0 (Linux; Android 4.4.2; LG-H221 Build/KOT49I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/64.0.0.52.76;] Android 4 Joy
Mozilla/5.0 (iPod touch; CPU iPhone OS 9_3_5 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13G36 [FBAN/FBIOS;FBAV/64.0.0.43.138;FBBV/38842789;FBRV/0;FBDV/iPod5,1;FBMD/iPod touch;FBSN/iPhone OS;FBSV/9.3.5;FBSS/2;FBCR/;FBID/phone;FBLC/ iOS 9 iPod Touch 5
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/64.0.0.43.138;FBBV/38842789;FBRV/0;FBDV/iPad2,2;FBMD/iPad;FBSN/iPhone OS;FBSV/9.3.5;FBSS/1;FBCR/Carrier;FBID/tablet;FBLC/ru_RU;FBOP/5] iOS 9 iPad 2
Mozilla/5.0 (iPad; CPU OS 9_3_2 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13F69 [FBAN/FBIOS;FBAV/64.0.0.43.138;FBBV/38842789;FBRV/0;FBDV/iPad5,4;FBMD/iPad;FBSN/iPhone OS;FBSV/9.3.2;FBSS/2;FBCR/Carrier;FBID/tablet;FBLC/ru_RU;FBOP/5] iOS 9 iPad Air 2
Mozilla/5.0 (iPad; CPU OS 8_1_2 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Mobile/12B440 [FBAN/FBIOS;FBAV/64.0.0.43.138;FBBV/38842789;FBRV/0;FBDV/iPad4,2;FBMD/iPad;FBSN/iPhone OS;FBSV/8.1.2;FBSS/2;FBCR/Beeline;FBID/tablet;FBLC/ru_RU;FBOP/5] iOS 8 iPad Air