Latest Facebook 47 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.3; en-us; HUAWEI C8816 Build/HuaweiC8816) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 C8816
Mozilla/5.0 (Linux; U; Android 4.3; en-gb; HTC Desire 516 dual sim Build/JWR66Y) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 Desire 516 Dual SIM
Mozilla/5.0 (Linux; U; Android 4.1.2; pt-pt; LG-E975T Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 Optimus G
Mozilla/5.0 (Linux; U; Android 4.1.2; pl-pl; HTC Desire 500 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 Desire 500
Mozilla/5.0 (Linux; U; Android 4.1.2; es-pe; LG-P659H Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 P659H
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/47.0.0.25.125;] Android 4 Z740G
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/47.0.0.24.125;] Android 4 Z740G
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; LG-LG870 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 870
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; GT-S7710L Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 Galaxy Xcover 2
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; GT-I9082 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 Galaxy Grand Duos
Mozilla/5.0 (Linux; U; Android 4.1.2; en-cn; HTC_7060 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 7060
Mozilla/5.0 (Linux; U; Android 4.1.2; en-ca; LG-E617G Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 E617G
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; LG-SU870 Build/IMM76L) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 SU870
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/47.0.0.25.125;] Android 4 LS860
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; LG-AS730 Build/IMM76L) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 AS730
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; HUAWEI M881 Build/HuaweiM881) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 M881
Mozilla/5.0 (Linux; U; Android 4.0.3; en-ca; LG-P880g Build/IML74K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 4 Optimus 4X HD
Mozilla/5.0 (Linux; Android 6.0; STARTRAIL 8 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 6 StarTrail 8
Mozilla/5.0 (Linux; Android 6.0; STARTRAIL 8 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 6 StarTrail 8
Mozilla/5.0 (Linux; Android 6.0; STARTRAIL 8 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/47.0.0.25.125;] Android 6 StarTrail 8