Latest Facebook 201 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; SM-N950U Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-G950U Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; RMX1945 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/71.0.3578.99 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 C2
Mozilla/5.0 (Linux; Android 9; RMX1941 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/93.0.4577.82 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 C2
Mozilla/5.0 (Linux; Android 9; RMX1941 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/71.0.3578.99 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 C2
Mozilla/5.0 (Linux; Android 9; RMX1811 Build/PKQ1.190319.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 C1
Mozilla/5.0 (Linux; Android 9; Pixel 2 Build/PQ2A.190305.002; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/71.0.3578.98 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 Pixel 2
Mozilla/5.0 (Linux; Android 9; CPH1931 Build/PKQ1.190714.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 A5 (2020)
Mozilla/5.0 (Linux; Android 9; CPH1923 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.104 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 A1k
Mozilla/5.0 (Linux; Android 9; CPH1923 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 A1k
Mozilla/5.0 (Linux; Android 9; CPH1923 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 A1k
Mozilla/5.0 (Linux; Android 9; CPH1923 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/71.0.3578.99 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 9 A1k
Mozilla/5.0 (Linux; Android 8.1.0; Z60s Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 Z60s
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1812 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 Y81i
Mozilla/5.0 (Linux; Android 8.1.0; SNE-LX1 Build/HUAWEISNE-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 Mate 20 Lite
Mozilla/5.0 (Linux; Android 8.1.0; DRA-LX2 Build/HUAWEIDRA-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 Y5 Prime (2018)
Mozilla/5.0 (Linux; Android 8.1.0; CPH1909 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/69.0.3497.100 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 A5S
Mozilla/5.0 (Linux; Android 8.1.0; CLT-L29 Build/HUAWEICLT-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/71.0.3578.99 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 P20 Pro
Mozilla/5.0 (Linux; Android 8.0.0; SM-J600G Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 Galaxy J6
Mozilla/5.0 (Linux; Android 8.0.0; SM-J400F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/201.0.0.58.99;] Android 8 Galaxy J4