Latest Facebook 266 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/90.0.4430.66 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.56.124;] Android 9 Blade A5 (2019)
Mozilla/5.0 (Linux; Android 9; W-V800-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 View 3 Lite
Mozilla/5.0 (Linux; Android 9; W-P311-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 View 3
Mozilla/5.0 (Linux; Android 9; U304AA Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.96 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.56.124;] Android 9 Radiant Core
Mozilla/5.0 (Linux; Android 9; TECNO LB8a Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Pouvoir 3 Plus
Mozilla/5.0 (Linux; Android 9; SM-S767VL Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 Crown
Mozilla/5.0 (Linux; Android 9; SM-S757BL Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 Crown
Mozilla/5.0 (Linux; Android 9; SM-S506DL Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; SM-S367VL Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J3 Orbit
Mozilla/5.0 (Linux; Android 9; SM-S260DL Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J2 Core
Mozilla/5.0 (Linux; Android 9; SM-S102DL Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy A10e
Mozilla/5.0 (Linux; Android 9; SM-N950U1 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-N950U Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-J737V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-J737U Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-J737T1 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.93 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-J737T Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-J737R4 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-J737P Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-J737A Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/266.0.0.64.124;] Android 9 Galaxy J7 (2018)