Latest Facebook Messenger 301 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/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-M205FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Galaxy M20
Mozilla/5.0 (Linux; Android 9; SM-J730G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-G960F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.198 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Galaxy S9
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-A600FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] 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/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Galaxy A8
Mozilla/5.0 (Linux; Android 9; SM-A207M Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Galaxy A20s
Mozilla/5.0 (Linux; Android 9; Redmi Note 8 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Redmi Note 8
Mozilla/5.0 (Linux; Android 9; Redmi Note 7 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Redmi Note 7
Mozilla/5.0 (Linux; Android 9; Redmi 7 Build/PKQ1.181021.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Redmi 7
Mozilla/5.0 (Linux; Android 9; POT-LX1 Build/HUAWEIPOT-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 P smart (2019)
Mozilla/5.0 (Linux; Android 9; MRD-LX1 Build/HUAWEIMRD-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Y6 (2019)
Mozilla/5.0 (Linux; Android 9; moto e6s Build/POBS29.288-60-6-1-1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Moto E6s
Mozilla/5.0 (Linux; Android 9; moto e6 play Build/POAS29.550-132-2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Moto E6 Play
Mozilla/5.0 (Linux; Android 9; moto e(6) plus Build/PTB29.401-18; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Moto E6 Plus
Mozilla/5.0 (Linux; Android 9; MI 8 SE Build/PKQ1.181121.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.72 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Mi 8 SE
Mozilla/5.0 (Linux; Android 9; MHA-AL00 Build/HUAWEIMHA-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.141 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Mate 9
Mozilla/5.0 (Linux; Android 9; LG-H930 Build/PKQ1.190414.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 V30
Mozilla/5.0 (Linux; Android 9; JKM-LX3 Build/HUAWEIJKM-L23; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/301.0.0.12.112;] Android 9 Y9 (2019)