Latest Facebook Messenger 286 user agents:

User Agent Platform Device
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/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Y11
Mozilla/5.0 (Linux; Android 9; vivo 1901 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Y15
Mozilla/5.0 (Linux; Android 9; SM-M205FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Galaxy M20
Mozilla/5.0 (Linux; Android 9; SM-J737T1 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Galaxy J7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-J400F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Galaxy J4
Mozilla/5.0 (Linux; Android 9; SM-J330F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G970F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Galaxy S10e
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-A405FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Galaxy A40
Mozilla/5.0 (Linux; Android 9; Redmi Note 8T Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Redmi Note 8T
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/80.0.3987.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Redmi Note 7 Pro
Mozilla/5.0 (Linux; Android 9; Redmi Note 6 Pro Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Redmi Note 6 Pro
Mozilla/5.0 (Linux; Android 9; Redmi Note 5 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/76.0.3809.89 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Redmi Note 5
Mozilla/5.0 (Linux; Android 9; Redmi 8 Build/PKQ1.190319.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Redmi 8
Mozilla/5.0 (Linux; Android 9; POT-LX1 Build/HUAWEIPOT-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 P smart (2019)
Mozilla/5.0 (Linux; Android 9; moto g(6) play Build/PPPS29.55-35-18-7; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Moto G6 Play
Mozilla/5.0 (Linux; Android 9; moto g(6) Build/PPSS29.55-37-7-10; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Moto G6
Mozilla/5.0 (Linux; Android 9; Mi MIX 2 Build/PKQ1.190118.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Mi Mix 2
Mozilla/5.0 (Linux; Android 9; MAR-LX2 Build/HUAWEIMAR-L22B01; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 P30 Lite
Mozilla/5.0 (Linux; Android 9; JKM-LX2 Build/HUAWEIJKM-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/286.0.0.21.122;] Android 9 Y9 (2019)