Latest Facebook 79 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.3; en-us; ZTE-Z777 Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 Z777
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/79.0.0.18.71;] Android 4 Z667G
Mozilla/5.0 (Linux; U; Android 4.2.2; zh-tw; HTC 9060 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 9060
Mozilla/5.0 (Linux; U; Android 4.1.2; zh-tw; LG-E975w Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 Optimus G
Mozilla/5.0 (Linux; U; Android 4.1.2; ru-ru; GT-I8190T Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 Galaxy S III mini
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; ZTE-Z740G Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 Z740G
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; SCH-I200 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 Galaxy Stellar
Mozilla/5.0 (Linux; U; Android 4.1.2; en-gb; GT-I8730T Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 Galaxy Express
Mozilla/5.0 (Linux; U; Android 4.1.2; en-ca; LG-E410B Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 Optimus L1 II
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; LG-LS860 Build/IMM76I) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 LS860
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; LG-LG730 Build/IMM76L) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 730
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; Huawei-H867G Build/HuaweiH867G) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 H867G
Mozilla/5.0 (Linux; U; Android 4.0.4; en-ca; LG-P935 Build/IMM76D) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 P935
Mozilla/5.0 (Linux; U; Android 4.0.3; en-us; HUAWEI U8681 Build/HuaweiU8681) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 4 U8681
Mozilla/5.0 (Linux; Android 5.1; VF-696 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.77 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 5 Smart Grand 6
Mozilla/5.0 (Linux; Android 5.1.1; Y538 Build/HuaweiY538) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 5 Y538
Mozilla/5.0 (Linux; Android 5.1.1; SM-J200GU Build/LMY47X; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/43.0.2357.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 5 Galaxy J2
Mozilla/5.0 (Linux; Android 5.0; BLU VIVO SELFIE Build/LRX21M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/50.0.2661.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 5 Vivo Selfie
Mozilla/5.0 (Linux; Android 5.0.2; SM-G530FZ Build/LRX22G; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 5 Galaxy Grand Prime
Mozilla/5.0 (Linux; Android 5.0.2; LG-H525n Build/LRX22G; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/50.0.2661.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/79.0.0.18.71;] Android 5 G4c