Latest Facebook Messenger 165 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; ME173X Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Safari/534.30 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 4 MeMO Pad HD 7
Mozilla/5.0 (Linux; Android 8.1.0; ONEPLUS A5010 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 5T
Mozilla/5.0 (Linux; Android 8.0.0; VTR-L09 Build/HUAWEIVTR-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 P10
Mozilla/5.0 (Linux; Android 8.0.0; SM-G950U1 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/165.0.0.25.92;] 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/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 Galaxy S8
Mozilla/5.0 (Linux; Android 8.0.0; SC-02J 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/165.0.0.25.92;] 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/165.0.0.25.92;] Android 8 Mi A1
Mozilla/5.0 (Linux; Android 8.0.0; MHA-L29 Build/HUAWEIMHA-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 Mate 9
Mozilla/5.0 (Linux; Android 8.0.0; G8141 Build/47.1.A.12.145; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 Xperia XZ Premium
Mozilla/5.0 (Linux; Android 8.0.0; BLA-L29 Build/HUAWEIBLA-L29S; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 Mate 10 Pro
Mozilla/5.0 (Linux; Android 8.0.0; ASUS_Z017D Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 ZenFone 3
Mozilla/5.0 (Linux; Android 8.0.0; ASUS_Z012D 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/165.0.0.25.92;] Android 8 ZenFone 3
Mozilla/5.0 (Linux; Android 8.0.0; ANE-LX1 Build/HUAWEIANE-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 8 P20 Lite
Mozilla/5.0 (Linux; Android 7.1.2; Redmi 5 Plus Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 7 Redmi 5 Plus
Mozilla/5.0 (Linux; Android 7.1.1; ASUS_X00ID Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 7 ZenFone 4 Max
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/165.0.0.25.92;] 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/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] 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/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 7 P10 Lite
Mozilla/5.0 (Linux; Android 7.0; WAS-LX1 Build/HUAWEIWAS-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 7 P10 Lite
Mozilla/5.0 (Linux; Android 7.0; U PULSE Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/165.0.0.25.92;] Android 7 U Pulse