Latest Facebook 211 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; vivo 1920 Build/PKQ1.190626.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 S1 Pro
Mozilla/5.0 (Linux; Android 9; vivo 1920 Build/PKQ1.190626.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 S1 Pro
Mozilla/5.0 (Linux; Android 9; vivo 1916 Build/PKQ1.190626.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 U10
Mozilla/5.0 (Linux; Android 9; vivo 1906 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 Y11
Mozilla/5.0 (Linux; Android 9; SM-A505F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; POT-LX1 Build/HUAWEIPOT-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.104 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 P smart (2019)
Mozilla/5.0 (Linux; Android 9; moto z3 Build/PDXS29.84-51-11-4; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/73.0.3683.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 Moto Z3
Mozilla/5.0 (Linux; Android 9; H4413 Build/50.2.A.3.65; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 9 Xperia XA2 Plus
Mozilla/5.0 (Linux; Android 8.1.0; Vivo XI Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Vivo XI
Mozilla/5.0 (Linux; Android 8.1.0; TECNO ID3k Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/71.0.3578.99 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Camon iAir 2+
Mozilla/5.0 (Linux; Android 8.1.0; SNE-LX1 Build/HUAWEISNE-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/69.0.3497.100 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Mate 20 Lite
Mozilla/5.0 (Linux; Android 8.1.0; SM-J327R4 Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Galaxy J3 Emerge
Mozilla/5.0 (Linux; Android 8.1.0; SM-J327R4 Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.162 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Galaxy J3 Emerge
Mozilla/5.0 (Linux; Android 8.1.0; GS185 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.157 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 GS185
Mozilla/5.0 (Linux; Android 8.1.0; E1060X Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/119.0.6045.66 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Lifetab E1060X
Mozilla/5.0 (Linux; Android 8.1.0; E1060X Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Lifetab E1060X
Mozilla/5.0 (Linux; Android 8.1.0; E1060X Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/106.0.5249.118 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Lifetab E1060X
Mozilla/5.0 (Linux; Android 8.0.0; SM-G935F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Galaxy S7 Edge
Mozilla/5.0 (Linux; Android 8.0.0; SM-G570F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Galaxy J5 Prime
Mozilla/5.0 (Linux; Android 8.0.0; SM-A750FN Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/211.0.0.43.112;] Android 8 Galaxy A7 (2018)