Latest Facebook Messenger 277 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; vivo 1915 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Y19
Mozilla/5.0 (Linux; Android 9; vivo 1907 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 V17 Neo
Mozilla/5.0 (Linux; Android 9; vivo 1906 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Y11
Mozilla/5.0 (Linux; Android 9; vivo 1723 Build/PKQ1.190118.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 V9
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J330F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 9; Redmi Note 8T Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Redmi Note 8T
Mozilla/5.0 (Linux; Android 9; Redmi Note 5 Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Redmi Note 5
Mozilla/5.0 (Linux; Android 9; MRD-LX2 Build/HUAWEIMRD-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Y6 Pro (2019)
Mozilla/5.0 (Linux; Android 9; moto g(6) play Build/PPPS29.55-35-18-7; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Moto G6 Play
Mozilla/5.0 (Linux; Android 9; JKM-LX2 Build/HUAWEIJKM-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] 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/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Nova 3i
Mozilla/5.0 (Linux; Android 9; CPH2015 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 A31
Mozilla/5.0 (Linux; Android 9; cp3705AS Build/3705AS.SPRINT.200717.0S; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 Legacy
Mozilla/5.0 (Linux; Android 9; ASUS_X00TDB Build/PKQ1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 ZenFone Max Pro M1
Mozilla/5.0 (Linux; Android 9; ANE-LX3 Build/HUAWEIANE-L23; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] 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/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 9 P20 Lite
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1812 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 8 Y81i
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1808 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/83.0.4103.106 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 8 Y81
Mozilla/5.0 (Linux; Android 8.1.0; vivo 1801 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/84.0.4147.125 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/277.0.0.12.116;] Android 8 Y71i