Latest Facebook Messenger 268 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE Blade V10 Vita 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Blade V10 Vita
Mozilla/5.0 (Linux; Android 9; vivo 1902 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Y17
Mozilla/5.0 (Linux; Android 9; SM-S367VL 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy J3 Orbit
Mozilla/5.0 (Linux; Android 9; SM-N950F 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-J810Y 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy J8
Mozilla/5.0 (Linux; Android 9; SM-J810M 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy J8
Mozilla/5.0 (Linux; Android 9; SM-J530F 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/Orca-Android;FBAV/268.0.0.15.118;] 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/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G950F 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-A705FN 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy A70
Mozilla/5.0 (Linux; Android 9; SM-A205U 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy A20
Mozilla/5.0 (Linux; Android 9; SM-A205U 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Galaxy A20
Mozilla/5.0 (Linux; Android 9; Redmi Note 8T Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Redmi Note 8T
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/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Redmi Note 8 Pro
Mozilla/5.0 (Linux; Android 9; Redmi Note 8 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Redmi Note 8
Mozilla/5.0 (Linux; Android 9; Redmi Note 7 Pro Build/PKQ1.181203.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.162 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Redmi Note 7 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/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Redmi Note 7
Mozilla/5.0 (Linux; Android 9; Redmi 8 Build/PKQ1.190319.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Redmi 8
Mozilla/5.0 (Linux; Android 9; Redmi 6A 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 Redmi 6A
Mozilla/5.0 (Linux; Android 9; PADT00 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/Orca-Android;FBAV/268.0.0.15.118;] Android 9 A3