Latest Facebook Messenger 149 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; GT-I9082 Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 4 Galaxy Grand Duos
Mozilla/5.0 (Linux; Android 8.0.0; ONEPLUS A3003 Build/OPR6.170623.013; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 8 3
Mozilla/5.0 (Linux; Android 7.1.1; SM-N950F Build/NMF26X; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 Galaxy Note 8
Mozilla/5.0 (Linux; Android 7.1.1; ASUS_Z01MD Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 ZenFone 4 Selfie Pro
Mozilla/5.0 (Linux; Android 7.1.1; ASUS_X00HD Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 ZenFone 4 Max
Mozilla/5.0 (Linux; Android 7.0; SM-J530F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 7.0; SM-G930F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] 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/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] 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/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 Galaxy S6
Mozilla/5.0 (Linux; Android 7.0; SM-C5000 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/149.0.0.22.95;] Android 7 Galaxy C5
Mozilla/5.0 (Linux; Android 7.0; SM-A310F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 Galaxy A3 (2016)
Mozilla/5.0 (Linux; Android 7.0; PRA-LX1 Build/HUAWEIPRA-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 P8 Lite (2017)
Mozilla/5.0 (Linux; Android 7.0; MI 5 Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 Mi 5
Mozilla/5.0 (Linux; Android 7.0; LG-H850 Build/NRD90U; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 G5
Mozilla/5.0 (Linux; Android 7.0; HUAWEI VNS-L31 Build/HUAWEIVNS-L31; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 7 P9 Lite
Mozilla/5.0 (Linux; Android 6.0; ZTE BLADE A601 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/50.0.2661.86 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 6 Blade A601
Mozilla/5.0 (Linux; Android 6.0; ROBBY Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 6 Robby
Mozilla/5.0 (Linux; Android 6.0; Redmi Note 4 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 6 Redmi Note 4
Mozilla/5.0 (Linux; Android 6.0; F3212 Build/36.0.B.2.109; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 6 Xperia XA Ultra Dual
Mozilla/5.0 (Linux; Android 6.0; BTV-DL09 Build/HUAWEIBEETHOVEN-DL09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/55.0.2883.91 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/149.0.0.22.95;] Android 6 MediaPad M3