Latest Facebook 99 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.4.2; nl-nl; HTC Desire 526G dual sim Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Desire 526G Dual SIM
Mozilla/5.0 (Linux; U; Android 4.3; es-us; SM-G350M Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Galaxy Core Plus
Mozilla/5.0 (Linux; U; Android 4.3; en-us; ZTE-Z667G Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Z667G
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; Vodafone 785 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.2 Mobile Safari/534.30 SVN/240HGG2 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Smart 4 Mini
Mozilla/5.0 (Linux; U; Android 4.2.2; es-us; GT-S7275B Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Galaxy ACE 3
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/99.0.0.26.69;] Android 4 A47
Mozilla/5.0 (Linux; U; Android 4.2.2; en-au; GT-S7275Y Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Galaxy ACE 3
Mozilla/5.0 (Linux; U; Android 4.1.2; es-us; ZTE-Z740G Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Z740G
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; LG-E980h Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Optimus G Pro
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; HUAWEI G730-C00 Build/HuaweiG730-C00) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Ascend G730
Mozilla/5.0 (Linux; U; Android 4.1.2; en-au; GT-I8730T Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Galaxy Express
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; LG-LS840 Build/ZVK.IMM76D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 4 Viper 4G LTE
Mozilla/5.0 (Linux; Android 6.0; LG-H812 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.124 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 6 G4
Mozilla/5.0 (Linux; Android 6.0; E5363 Build/27.3.B.0.122; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.124 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 6 Xperia C4 Dual
Mozilla/5.0 (Linux; Android 6.0.1; SM-N930R7 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/54.0.2840.68 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 6 Galaxy Note 7
Mozilla/5.0 (Linux; Android 6.0.1; SM-N930R4 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.124 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 6 Galaxy Note 7
Mozilla/5.0 (Linux; Android 6.0.1; SM-N930P Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.124 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 6 Galaxy Note 7
Mozilla/5.0 (Linux; Android 5.1; VF-795 Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 5 Smart Speed 6
Mozilla/5.0 (Linux; Android 5.1.1; Z716BL Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/42.0.2311.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 5 Citrine LTE
Mozilla/5.0 (Linux; Android 5.0; SM-N900W8 Build/LRX21V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/54.0.2840.68 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/99.0.0.26.69;] Android 5 Galaxy Note 3