Latest Facebook Messenger 255 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; VTR-L29 Build/HUAWEIVTR-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 P10
Mozilla/5.0 (Linux; Android 9; VTR-L09 Build/HUAWEIVTR-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 P10
Mozilla/5.0 (Linux; Android 9; SM-M305M Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.117 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy M30
Mozilla/5.0 (Linux; Android 9; SM-J730G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-J600FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy J6
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J330FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] 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/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A70
Mozilla/5.0 (Linux; Android 9; SM-A600FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A6
Mozilla/5.0 (Linux; Android 9; SM-A530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126 Android 9 Galaxy A8
Mozilla/5.0 (Linux; Android 9; SM-A530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A8
Mozilla/5.0 (Linux; Android 9; SM-A505GN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; SM-A505FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; SM-A505FM Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; SM-A505F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; SM-A405FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A40
Mozilla/5.0 (Linux; Android 9; SM-A205U Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.149 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] 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/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A20
Mozilla/5.0 (Linux; Android 9; SM-A205F 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/Orca-Android;FBAV/255.0.0.14.126;] Android 9 Galaxy A20