Latest Facebook Messenger 325 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; SM-J701F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Galaxy J7 Core
Mozilla/5.0 (Linux; Android 9; SM-J600FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Galaxy J6
Mozilla/5.0 (Linux; Android 9; SM-J330FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.159 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-A530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Galaxy A8
Mozilla/5.0 (Linux; Android 9; SM-A505GN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Galaxy A50
Mozilla/5.0 (Linux; Android 9; Redmi Note 7 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Redmi Note 7
Mozilla/5.0 (Linux; Android 9; Redmi Note 5 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.159 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Redmi Note 5
Mozilla/5.0 (Linux; Android 9; Redmi Note 5 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.0.78;] Android 9 Redmi Note 5
Mozilla/5.0 (Linux; Android 9; Redmi 6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Redmi 6
Mozilla/5.0 (Linux; Android 9; POCOPHONE F1 Build/PKQ1.180729.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Pocophone F1
Mozilla/5.0 (Linux; Android 9; MHA-L29 Build/HUAWEIMHA-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.159 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 Mate 9
Mozilla/5.0 (Linux; Android 9; LM-X430 Build/PKQ1.190522.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 K40S
Mozilla/5.0 (Linux; Android 9; CPH2083 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.164 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 A12
Mozilla/5.0 (Linux; Android 9; ASUS_X00TD Build/PKQ1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.159 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 9 ZenFone Max Pro M1
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1820 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/87.0.4280.141 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 8 Y91i
Mozilla/5.0 (Linux; Android 8.1.0; SM-J730G Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.159 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 8 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 8.1.0; SM-G610F Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 8 Galaxy J7 Prime
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/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/325.0.0.16.118;] Android 8 Redmi 5 Plus