Latest Facebook Messenger 170 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; GT-I9060 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 4 Galaxy Grand Neo
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; GT-I8200N Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 4 Galaxy S III mini Value Edition
Mozilla/5.0 (Linux; U; Android 4.1.2; pt-pt; GT-I8190 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/MESSENGER;FBAV/170.0.0.39.87;] Android 4 Galaxy S III mini
Mozilla/5.0 (Linux; Android 8.0.0; TA-1032 Build/O00623; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 8 3
Mozilla/5.0 (Linux; Android 8.0.0; SM-G935F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 8 Galaxy S7 Edge
Mozilla/5.0 (Linux; Android 7.1.1; Moto G (5S) Build/NPPS26.102-49-8; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Moto G5s
Mozilla/5.0 (Linux; Android 7.1.1; ASUS_X00DD Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 ZenFone 3 Max
Mozilla/5.0 (Linux; Android 7.0; WAS-LX1A Build/HUAWEIWAS-LX1A; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 P10 Lite
Mozilla/5.0 (Linux; Android 7.0; TRT-LX1 Build/HUAWEITRT-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Y7 (2017)
Mozilla/5.0 (Linux; Android 7.0; Sunny2 Plus Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Sunny 2 Plus
Mozilla/5.0 (Linux; Android 7.0; SM-J730F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.35.87;] Android 7 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 7.0; SM-J710F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Galaxy J7
Mozilla/5.0 (Linux; Android 7.0; SM-J330FN Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 7.0; SM-G930F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Galaxy S7
Mozilla/5.0 (Linux; Android 7.0; SM-G925F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Galaxy S6 Edge
Mozilla/5.0 (Linux; Android 7.0; SM-G920F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.35.87;] Android 7 Galaxy S6
Mozilla/5.0 (Linux; Android 7.0; SM-A510F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Galaxy A5 (2016)
Mozilla/5.0 (Linux; Android 7.0; Redmi Note 4 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.39.87;] Android 7 Redmi Note 4
Mozilla/5.0 (Linux; Android 7.0; PRA-LX1 Build/HUAWEIPRA-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.35.87;] Android 7 P8 Lite (2017)
Mozilla/5.0 (Linux; Android 7.0; PRA-LX1 Build/HUAWEIPRA-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.81 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/170.0.0.35.87;] Android 7 P8 Lite (2017)