Latest Facebook Messenger 252 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/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-J730G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-J400F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Galaxy J4
Mozilla/5.0 (Linux; Android 9; SM-A750FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Galaxy A7 (2018)
Mozilla/5.0 (Linux; Android 9; SM-A405FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.117 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Galaxy A40
Mozilla/5.0 (Linux; Android 9; Mi A3 Build/PKQ1.190416.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Mi A3
Mozilla/5.0 (Linux; Android 9; MI 8 Lite Build/PKQ1.181007.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Mi 8 Lite
Mozilla/5.0 (Linux; Android 9; MI 8 Lite Build/PKQ1.181007.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.117 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Mi 8 Lite
Mozilla/5.0 (Linux; Android 9; FIG-LX1 Build/HUAWEIFIG-L31; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 P smart
Mozilla/5.0 (Linux; Android 9; CPH1923 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.117 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 A1k
Mozilla/5.0 (Linux; Android 9; BLA-L29 Build/HUAWEIBLA-L29S; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.117 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 Mate 10 Pro
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L2101; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 8.1.0; SM-J727T Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 8 Galaxy J7 V
Mozilla/5.0 (Linux; Android 8.1.0; SM-J710F Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 8 Galaxy J7
Mozilla/5.0 (Linux; Android 8.1.0; Redmi 6A Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 8 Redmi 6A
Mozilla/5.0 (Linux; Android 8.1.0; EML-L29 Build/HUAWEIEML-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 8 P20
Mozilla/5.0 (Linux; Android 8.1.0; CUBOT_J3 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 8 J3
Mozilla/5.0 (Linux; Android 8.1.0; CPH1909 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 8 A5S
Mozilla/5.0 (Linux; Android 8.0.0; LDN-L21 Build/HUAWEILDN-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 8 Y7 Prime
Mozilla/5.0 (Linux; Android 7.0; XT1585 Build/NCK25.118-10.5; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/252.1.0.15.119;] Android 7 Droid Turbo 2