Latest Facebook Messenger 386 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 8.1.0; SM-J415GN Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/103.0.5060.129 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.2.0.22.106;] Android 8 Galaxy J4+
Mozilla/5.0 (Linux; Android 13; V2031 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/386.2.0.22.106;] Android 13 Y51s
Mozilla/5.0 (Linux; Android 12; moto g82 5G Build/S1SU32.73-112-2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.91 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.2.0.22.106;] Android 12 Moto G82 5G
Mozilla/5.0 (Linux; Android 12; ASUS_AI2201_D Build/SKQ1.220406.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.91 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.2.0.22.106;] Android 12 ROG Phone 6
Mozilla/5.0 (Linux; Android 11; RMX3491 Build/RKQ1.211019.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.85 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.2.0.22.106;] Android 11 9i
Mozilla/5.0 (Linux; Android 11; BNE-LX1 Build/HUAWEIBNE-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.0.0.19.106;] Android 11 Nova 10 SE
Mozilla/5.0 (Linux; Android 11; BL6000Pro Build/RP1A.200720.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.105 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.0.0.19.106;] Android 11 BL6000 Pro
Mozilla/5.0 (Linux; Android 11; AE9010 Build/RP1A.201005.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.85 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.0.0.19.106;] Android 11 V80
Mozilla/5.0 (Linux; Android 10; Nokia C3 Build/QP1A.190711.020; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/108.0.5359.128 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.0.0.19.106;] Android 10 C3
Mozilla/5.0 (Linux; Android 10; Nokia C3 Build/QP1A.190711.020; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.141 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.0.0.19.106;] Android 10 C3
Mozilla/5.0 (Linux; Android 10; M2003J15SC Build/QP1A.190711.020; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/105.0.5195.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/386.2.0.22.106;] Android 10 Redmi Note 10X