Latest Facebook Messenger 168 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; ALCATEL ONE TOUCH 7041X Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.2 Mobile Safari/534.30 SVN/090FPG1 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 4 One Touch Pop C7
Mozilla/5.0 (Linux; Android 8.1.0; TA-1021 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 6
Mozilla/5.0 (Linux; Android 8.1.0; ONEPLUS A5000 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 5
Mozilla/5.0 (Linux; Android 8.0.0; VTR-L09 Build/HUAWEIVTR-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 P10
Mozilla/5.0 (Linux; Android 8.0.0; SM-N950F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 Galaxy Note 8
Mozilla/5.0 (Linux; Android 8.0.0; SM-G950U Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 Galaxy S8
Mozilla/5.0 (Linux; Android 8.0.0; SM-G950F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 Galaxy S8
Mozilla/5.0 (Linux; Android 8.0.0; Mi A1 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 Mi A1
Mozilla/5.0 (Linux; Android 8.0.0; MI 5 Build/OPR1.170623.032; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 Mi 5
Mozilla/5.0 (Linux; Android 8.0.0; G8341 Build/47.1.A.12.179; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 8 Xperia XZ1
Mozilla/5.0 (Linux; Android 7.1.2; Redmi 5A Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 Redmi 5A
Mozilla/5.0 (Linux; Android 7.1.1; VFD 710 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 Smart V8
Mozilla/5.0 (Linux; Android 7.1.1; VFD 710 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 Smart V8
Mozilla/5.0 (Linux; Android 7.1.1; VFD 510 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 Smart E8
Mozilla/5.0 (Linux; Android 7.1.1; SM-J510FN Build/NMF26X; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 Galaxy J5 (2016)
Mozilla/5.0 (Linux; Android 7.1.1; SM-J510FN Build/NMF26X; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 Galaxy J5 (2016)
Mozilla/5.0 (Linux; Android 7.1.1; ASUS_X00HD Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 ZenFone 4 Max
Mozilla/5.0 (Linux; Android 7.1.1; ASUS_X00DD Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 ZenFone 3 Max
Mozilla/5.0 (Linux; Android 7.1.1; Aquaris U Plus Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.26.45;] Android 7 Aquaris U Plus
Mozilla/5.0 (Linux; Android 7.0; WAS-LX1A Build/HUAWEIWAS-LX1A; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/168.0.0.27.45;] Android 7 P10 Lite