Latest Facebook Messenger 280 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; SM-N950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-J730G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/87.0.4280.141 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-G950F 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/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-A505GN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; SM-A205GN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Galaxy A20
Mozilla/5.0 (Linux; Android 9; SM-A205G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] 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/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Redmi Note 8T
Mozilla/5.0 (Linux; Android 9; Redmi Note 7 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Redmi Note 7
Mozilla/5.0 (Linux; Android 9; Redmi Note 5 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] 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/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Redmi 8
Mozilla/5.0 (Linux; Android 9; Redmi 8 Build/PKQ1.190319.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Redmi 8
Mozilla/5.0 (Linux; Android 9; Redmi 7 Build/PKQ1.181021.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Redmi 7
Mozilla/5.0 (Linux; Android 9; MRD-LX2 Build/HUAWEIMRD-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Y6 Pro (2019)
Mozilla/5.0 (Linux; Android 9; MRD-LX2 Build/HUAWEIMRD-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Y6 Pro (2019)
Mozilla/5.0 (Linux; Android 9; moto g(8) plus Build/PPIS29.65-51-7; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Moto G8 Plus
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/86.0.4240.110 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 Moto G6
Mozilla/5.0 (Linux; Android 9; LM-X420 Build/PKQ1.190302.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 K40
Mozilla/5.0 (Linux; Android 9; LM-X410(FG) Build/PKQ1.190522.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 K11
Mozilla/5.0 (Linux; Android 9; LGL322DL Build/PKQ1.190414.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/280.0.0.16.110;] Android 9 K30