Latest Facebook Messenger 157 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.3; pt-pt; HUAWEI G6-L11 Build/HuaweiG6-L11C02B120) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 4 Ascend G6
Mozilla/5.0 (Linux; U; Android 4.3; pt-pt; GT-I9300 Build/JSS15J) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 4 Galaxy S III
Mozilla/5.0 (Linux; Android 8.1.0; Nexus 5X Build/OPM3.171019.016; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 8 Nexus 5X
Mozilla/5.0 (Linux; Android 8.0.0; VTR-L09 Build/HUAWEIVTR-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 8 P10
Mozilla/5.0 (Linux; Android 8.0.0; STF-L09 Build/HUAWEISTF-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 8 Honor 9
Mozilla/5.0 (Linux; Android 8.0.0; SM-G950F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] 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/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.19.89;] Android 8 Galaxy S8
Mozilla/5.0 (Linux; Android 7.1.2; View Prime Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 View Prime
Mozilla/5.0 (Linux; Android 7.1.1; VFD 710 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/157.0.0.21.89;] Android 7 Smart V8
Mozilla/5.0 (Linux; Android 7.1.1; TA-1032 Build/NMF26O; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 3
Mozilla/5.0 (Linux; Android 7.1.1; TA-1020 Build/NMF26O; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 3
Mozilla/5.0 (Linux; Android 7.1.1; SM-N950U Build/NMF26X; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 Galaxy Note 8
Mozilla/5.0 (Linux; Android 7.1.1; SM-J510FN Build/NMF26X; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 Galaxy J5 (2016)
Mozilla/5.0 (Linux; Android 7.1.1; PRO 6 Build/NMF26O; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.110 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 PRO 6
Mozilla/5.0 (Linux; Android 7.1.1; ASUS_X00ID 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/157.0.0.21.89;] 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/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 ZenFone 3 Max
Mozilla/5.0 (Linux; Android 7.1.1; Aquaris U 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/157.0.0.21.89;] Android 7 Aquaris U
Mozilla/5.0 (Linux; Android 7.0; WAS-LX1A Build/HUAWEIWAS-LX1A; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 P10 Lite
Mozilla/5.0 (Linux; Android 7.0; VFD 610 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/60.0.3112.116 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 Smart N8
Mozilla/5.0 (Linux; Android 7.0; VFD 610 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/56.0.2924.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/157.0.0.21.89;] Android 7 Smart N8