Latest Facebook 274 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE Blade A5 2019 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.198 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Blade A5 (2019)
Mozilla/5.0 (Linux; Android 9; Z3153V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.89 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Blade Vantage 2
Mozilla/5.0 (Linux; Android 9; Z3153V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Blade Vantage 2
Mozilla/5.0 (Linux; Android 9; vivo X21A Build/PKQ1.180819.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 X21A
Mozilla/5.0 (Linux; Android 9; vivo 1906 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Y11
Mozilla/5.0 (Linux; Android 9; U304AA Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Radiant Core
Mozilla/5.0 (Linux; Android 9; TECNO CC9 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.108 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Camon 12 Pro
Mozilla/5.0 (Linux; Android 9; SUGAR T50 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.96 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 T50
Mozilla/5.0 (Linux; Android 9; SM-J701F 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/274.0.0.46.119;] Android 9 Galaxy J7 Core
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.114 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.127 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J260AZ Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Galaxy J2 Pure
Mozilla/5.0 (Linux; Android 9; SM-A207F 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/274.0.0.46.119;] Android 9 Galaxy A20s
Mozilla/5.0 (Linux; Android 9; SM-A202F 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/274.0.0.46.119;] Android 9 Galaxy A20e
Mozilla/5.0 (Linux; Android 9; SM-A105FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Galaxy A10
Mozilla/5.0 (Linux; Android 9; Redmi Note 8 Pro Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Redmi Note 8 Pro
Mozilla/5.0 (Linux; Android 9; Redmi Note 7 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 Redmi Note 7
Mozilla/5.0 (Linux; Android 9; POT-LX3 Build/HUAWEIPOT-L03; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 P smart (2019)
Mozilla/5.0 (Linux; Android 9; POT-LX1A Build/HUAWEIPOT-L41B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.104 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 P smart (2020)
Mozilla/5.0 (Linux; Android 9; POT-LX1 Build/HUAWEIPOT-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/274.0.0.46.119;] Android 9 P smart (2019)