Latest Facebook Messenger 318 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; MRD-LX1 Build/HUAWEIMRD-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 Y6 (2019)
Mozilla/5.0 (Linux; Android 9; Mi A1 Build/PKQ1.180917.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.19.123;] Android 9 Mi A1
Mozilla/5.0 (Linux; Android 9; MAR-LX1A Build/HUAWEIMAR-L21A; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 P30 Lite
Mozilla/5.0 (Linux; Android 9; LG-H870 Build/PKQ1.190522.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 G6
Mozilla/5.0 (Linux; Android 9; JKM-LX2 Build/HUAWEIJKM-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 Y9 (2019)
Mozilla/5.0 (Linux; Android 9; INE-LX2r Build/HUAWEIINE-LX2r; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 Nova 3i
Mozilla/5.0 (Linux; Android 9; CPH1931 Build/PKQ1.190714.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 A5 (2020)
Mozilla/5.0 (Linux; Android 9; ASUS_X01BDA Build/PKQ1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 ZenFone Max Pro M2
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L01; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1811 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 8 Y91
Mozilla/5.0 (Linux; Android 8.1.0; SM-J530F Build/M1AJQ; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 8 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 8.1.0; DRA-L21 Build/HUAWEIDRA-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 8 Y5 (2018)
Mozilla/5.0 (Linux; Android 8.0.0; WAS-TL10 Build/HUAWEIWAS-TL10; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 8 P10 Lite
Mozilla/5.0 (Linux; Android 8.0.0; SM-G930F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 8 Galaxy S7
Mozilla/5.0 (Linux; Android 8.0.0; LDN-LX2 Build/HUAWEILDN-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/93.0.4577.62 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 8 Y7 Prime (2018)
Mozilla/5.0 (Linux; Android 8.0.0; AGS2-L09 Build/HUAWEIAGS2-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 8 MediaPad T5 10
Mozilla/5.0 (Linux; Android 7.0; TRT-LX3 Build/HUAWEITRT-LX3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 7 Y7 (2017)
Mozilla/5.0 (Linux; Android 7.0; PRA-TL10 Build/HONORPRA-TL10; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.120 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/318.0.0.20.123;] Android 7 Honor 8 Lite