Latest Facebook Messenger 401 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; RX7 Mini Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 9 RX7 Mini
Mozilla/5.0 (Linux; Android 9; Primo S7 Pro Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.116 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 9 Primo S7 Pro
Mozilla/5.0 (Linux; Android 9; Prime_4_Lite Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.58 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 9 Prime 4 Lite
Mozilla/5.0 (Linux; Android 9; CPH1861 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.117 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 9 1
Mozilla/5.0 (Linux; Android 9; BUZZ 2 Lite Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 9 Buzz 2 Lite
Mozilla/5.0 (Linux; Android 9; BUZZ 2 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 9 Buzz 2
Mozilla/5.0 (Linux; Android 8.1.0; URBAN 1 Pro Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.116 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 8 Urban 1 Pro
Mozilla/5.0 (Linux; Android 8.1.0; Redmi 5 Plus Build/OPM1.171019.019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.58 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 8 Redmi 5 Plus
Mozilla/5.0 (Linux; Android 8.1.0; i72 Build/OPM2.171019.012; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 8 i72
Mozilla/5.0 (Linux; Android 8.1.0; Griffe T5 Build/OPM2.171019.012; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 8 Griffe T5
Mozilla/5.0 (Linux; Android 8.1.0; CPH1853 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.153 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 8 A3s
Mozilla/5.0 (Linux; Android 7.1.1; OPPO A73 Build/N6F26Q; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 7 A73
Mozilla/5.0 (Linux; Android 6.0; HT10 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 6 HT10
Mozilla/5.0 (Linux; Android 6.0.1; STV100-1 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/106.0.5249.126 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 6 BlackBerry Priv
Mozilla/5.0 (Linux; Android 5.1.1; OPPO A33m Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/42.0.2311.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 5 A33m
Mozilla/5.0 (Linux; Android 13; V2130 Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/108.0.5359.128 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 13 V23 5G
Mozilla/5.0 (Linux; Android 13; SM-G990U1 Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.58 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 13 Galaxy S21 FE 5G
Mozilla/5.0 (Linux; Android 13; SM-A715F Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.58 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 13 Galaxy A71
Mozilla/5.0 (Linux; Android 13; SM-A528B Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 13 Galaxy A52s 5G
Mozilla/5.0 (Linux; Android 13; RMX3478 Build/TP1A.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.116 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/401.0.0.14.97;] Android 13 Q5