Latest Facebook 125 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.3; en-us; HUAWEI H871G Build/HuaweiH871G) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 4 H871G
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/125.0.0.23.80;] Android 4 P935
Mozilla/5.0 (Linux; U; Android 4.0.3; en-us; HTC_Amaze_4G Build/IML74K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 4 Amaze 4G
Mozilla/5.0 (Linux; U; Android 4.0.3; en-ca; GT-I9100M Build/IML74K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 4 Galaxy S II
Mozilla/5.0 (Linux; Android 7.0; Konnect_601 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 7 Konnect 601
Mozilla/5.0 (Linux; Android 7.0; HUAWEI VNS-L31 Build/HUAWEIVNS-L31; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 7 P9 Lite
Mozilla/5.0 (Linux; Android 6.0; VFD 500 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/49.0.2623.105 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Smart Turbo 7
Mozilla/5.0 (Linux; Android 6.0; VFD 300 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.77 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Smart Mini 7
Mozilla/5.0 (Linux; Android 6.0; U FEEL Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 U Feel
Mozilla/5.0 (Linux; Android 6.0; SUNNY Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.81 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Sunny
Mozilla/5.0 (Linux; Android 6.0; STARNAUTE3 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 StarNaute 3
Mozilla/5.0 (Linux; Android 6.0; B1-780 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Iconia One 7
Mozilla/5.0 (Linux; Android 6.0; ALE-L21 Build/HuaweiALE-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 P8 Lite (2015)
Mozilla/5.0 (Linux; Android 6.0; 8063 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 One Touch Pixi 4 7" WiFi
Mozilla/5.0 (Linux; Android 6.0; 5010D Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/50.0.2661.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 One Touch Pixi 4 5" 3G
Mozilla/5.0 (Linux; Android 6.0; 4034D Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 One Touch Pixi 4 4"
Mozilla/5.0 (Linux; Android 6.0.1; VFD 600 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/56.0.2924.87 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Smart Prime 7
Mozilla/5.0 (Linux; Android 6.0.1; TOMMY Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/61.0.3163.98 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Tommy
Mozilla/5.0 (Linux; Android 6.0.1; SM-J500FN Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Galaxy J5 (2015)
Mozilla/5.0 (Linux; Android 6.0.1; SM-J500F Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/125.0.0.23.80;] Android 6 Galaxy J5 (2015)