Latest Facebook Messenger 323 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; SM-J730G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.88 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-J701M Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Galaxy J7 Core
Mozilla/5.0 (Linux; Android 9; SM-J400F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Galaxy J4
Mozilla/5.0 (Linux; Android 9; SM-J330F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 9; Redmi Note 8 Pro Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Redmi Note 8 Pro
Mozilla/5.0 (Linux; Android 9; moto g(6) play Build/PPPS29.55-35-18-7; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Moto G6 Play
Mozilla/5.0 (Linux; Android 9; LM-X410(FG) Build/PKQ1.190522.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 K11
Mozilla/5.0 (Linux; Android 9; JAT-LX3 Build/HUAWEIJAT-LX3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Honor 8A
Mozilla/5.0 (Linux; Android 9; JAT-LX3 Build/HUAWEIJAT-LX3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.88 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Honor 8A
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L01; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.83 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 9; Active 1+ Build/PKQ1.190118.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.117 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 9 Active 1 Plus
Mozilla/5.0 (Linux; Android 8.1.0; SM-J530F Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.73 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 8.1.0; DUB-LX1 Build/HUAWEIDUB-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 Y7 (2019)
Mozilla/5.0 (Linux; Android 8.1.0; CPH1903 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 AX7
Mozilla/5.0 (Linux; Android 8.1.0; CPH1903 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.164 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 AX7
Mozilla/5.0 (Linux; Android 8.1.0; CPH1803 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 A3s
Mozilla/5.0 (Linux; Android 8.0.0; SM-G935F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 Galaxy S7 Edge
Mozilla/5.0 (Linux; Android 8.0.0; SM-G935F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.115 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 Galaxy S7 Edge
Mozilla/5.0 (Linux; Android 8.0.0; SM-G930F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/323.1.0.12.119;] Android 8 Galaxy S7