Latest Facebook Messenger 245 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; STK-L21 Build/HUAWEISTK-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 Y9 Prime (2019)
Mozilla/5.0 (Linux; Android 9; SM-N950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.62 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-A207M Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 Galaxy A20s
Mozilla/5.0 (Linux; Android 9; SM-A205GN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/76.0.3809.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 Galaxy A20
Mozilla/5.0 (Linux; Android 9; POT-LX1 Build/HUAWEIPOT-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 P smart (2019)
Mozilla/5.0 (Linux; Android 9; CPH1923 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 A1k
Mozilla/5.0 (Linux; Android 9; COL-L29 Build/HUAWEICOL-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 Honor 10
Mozilla/5.0 (Linux; Android 9; COL-L29 Build/HUAWEICOL-L2901; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 Honor 10
Mozilla/5.0 (Linux; Android 9; CLT-L29 Build/HUAWEICLT-L2901; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 P20 Pro
Mozilla/5.0 (Linux; Android 9; BLA-L09 Build/HUAWEIBLA-L09S; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/77.0.3865.92 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 Mate 10 Pro
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/81.0.4044.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.108 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 9; ANE-LX1 Build/HUAWEIANE-L2101; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 8.1.0; moto e5 play Build/OPGS28.54-53-8-9; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.99 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 8 Moto E5 Play
Mozilla/5.0 (Linux; Android 8.1.0; LML212VL Build/OPM1.171019.019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 8 Rebel 4
Mozilla/5.0 (Linux; Android 8.1.0; DUB-LX3 Build/HUAWEIDUB-LX3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.93 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 8 Y7 (2019)
Mozilla/5.0 (Linux; Android 8.1.0; CPH1853 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 8 A3s
Mozilla/5.0 (Linux; Android 8.1.0; CPH1823 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.108 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 8 F9 Pro
Mozilla/5.0 (Linux; Android 8.1.0; 5003D_EEA Build/OPM2.171019.012; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.101 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/245.0.0.19.113;] Android 8 1C (2019)