Latest Facebook Messenger 236 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.1.1; en-us; HTC Desire 501 dual sim Build/JRO03H) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 4 Desire 501 Dual SIM
Mozilla/5.0 (Linux; Android 9; Mi A3 Build/PKQ1.190416.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 9 Mi A3
Mozilla/5.0 (Linux; Android 8.1.0; LAVA LE9810 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.110 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 8 R3 Note
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/236.0.0.14.120;] Android 8 A3s
Mozilla/5.0 (Linux; Android 8.0.0; LDN-LX3 Build/HUAWEILDN-LX3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/76.0.3809.132 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 8 Y7 (2018)
Mozilla/5.0 (Linux; Android 8.0.0; FS8016 Build/OPR1.170623.027; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 8 Aquos S2 Plus
Mozilla/5.0 (Linux; Android 7.0; Redmi Note 4 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 7 Redmi Note 4
Mozilla/5.0 (Linux; Android 6.0; Redmi Note 4 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 6 Redmi Note 4
Mozilla/5.0 (Linux; Android 5.1; vivo 1707 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/50.0.2661.86 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 5 Y51 (2015)
Mozilla/5.0 (Linux; Android 5.1.1; SM-G531H Build/LMY48B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/70.0.3538.64 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/236.0.0.14.120;] Android 5 Galaxy Grand Prime