Latest Facebook Messenger 270 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/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-A6060 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Galaxy A60
Mozilla/5.0 (Linux; Android 9; SM-A530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Galaxy A8
Mozilla/5.0 (Linux; Android 9; SM-A305G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Galaxy A30
Mozilla/5.0 (Linux; Android 9; SM-A205G Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Galaxy A20
Mozilla/5.0 (Linux; Android 9; SM-A107F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Galaxy A10s
Mozilla/5.0 (Linux; Android 9; Redmi Note 8T Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Redmi Note 8T
Mozilla/5.0 (Linux; Android 9; Redmi Note 8 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Redmi Note 8
Mozilla/5.0 (Linux; Android 9; Redmi Note 7S Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Redmi Note 7S
Mozilla/5.0 (Linux; Android 9; Redmi Note 7 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] 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/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Redmi Note 5
Mozilla/5.0 (Linux; Android 9; Redmi 8 Build/PKQ1.190319.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Redmi 8
Mozilla/5.0 (Linux; Android 9; MHA-L29 Build/HUAWEIMHA-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Mate 9
Mozilla/5.0 (Linux; Android 9; MAR-LX3A Build/HUAWEIMAR-L03A; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 P30 Lite
Mozilla/5.0 (Linux; Android 9; EML-L29 Build/HUAWEIEML-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 P20
Mozilla/5.0 (Linux; Android 9; CPH2015 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 A31
Mozilla/5.0 (Linux; Android 9; CPH1969 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 F11 Pro
Mozilla/5.0 (Linux; Android 9; CPH1893 Build/PKQ1.190414.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 R17 Neo
Mozilla/5.0 (Linux; Android 9; CPH1859 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 F7
Mozilla/5.0 (Linux; Android 9; COL-L29 Build/HUAWEICOL-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/270.0.0.17.120;] Android 9 Honor 10