Latest Facebook Messenger 400 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Ciao-Max; SM-N976U Build/SP1A.210812.016; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.154 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android Galaxy Note 10+
Mozilla/5.0 (Linux; Android 9; VIEW 1 Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.57 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 9 View 1
Mozilla/5.0 (Linux; Android 9; Hisense H30 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/400.0.0.11.90;] Android 9 H30 Lite
Mozilla/5.0 (Linux; Android 8.1.0; W_K400 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/69.0.3497.100 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 8 Lenny 5
Mozilla/5.0 (Linux; Android 8.1.0; TECNO ID3k Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.58 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 8 Camon iAir 2+
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/76.0.3809.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 8 Redmi 5 Plus
Mozilla/5.0 (Linux; Android 8.1.0; Allure M3 Lite Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 8 Allure M3 Lite
Mozilla/5.0 (Linux; Android 6.0.1; Z981 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/400.0.0.11.90;] Android 6 Blade Z Max Pro
Mozilla/5.0 (Linux; Android 5.1.1; Lenovo A6020a46 Build/LMY47V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 5 Vibe K5 Plus
Mozilla/5.0 (Linux; Android 4.4.4; Lenovo A6000 Build/KTU84P) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 4 A6000
Mozilla/5.0 (Linux; Android 13; V2201 Build/TP1A.220624.014_NONFC; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.153 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 V25e
Mozilla/5.0 (Linux; Android 13; V2169 Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.154 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 Y77 5G
Mozilla/5.0 (Linux; Android 13; V2169 Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.153 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 Y77 5G
Mozilla/5.0 (Linux; Android 13; RMX2180 Build/RP1A.200720.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.85 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 C15
Mozilla/5.0 (Linux; Android 13; CPH2457 Build/TP1A.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.153 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 Reno 8 Z
Mozilla/5.0 (Linux; Android 13; CPH2337 Build/TP1A.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.153 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 K10 5G
Mozilla/5.0 (Linux; Android 13; ASUS_I004D Build/TKQ1.220807.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 ZenFone 8 Flip
Mozilla/5.0 (Linux; Android 13; 2203129G Build/TKQ1.220807.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.153 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 13 12 Lite
Mozilla/5.0 (Linux; Android 12; VNE-LX1 Build/HONORVNE-L41CM; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/105.0.5195.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 12 X6
Mozilla/5.0 (Linux; Android 12; V2217 Build/SP1A.210812.003; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/400.0.0.11.90;] Android 12 Y02