Latest Facebook Messenger 130 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 6.0.1; 5051X Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.124 Mobile Safari/537.36 [FB_IAB/MESSENGER;FBAV/130.0.0.15.89;] Android 6 One Touch Pop 4
Mozilla/5.0 (Linux; Android 5.0.2; ZTE Blade L3 Build/LRX22G; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/59.0.3071.125 Mobile Safari/537.36 [FB_IAB/MESSENGER;FBAV/130.0.0.15.89;] Android 5 Blade L3
Mozilla/5.0 (Linux; Android 4.4.2; HIGHWAY SIGNS Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 [FB_IAB/MESSENGER;FBAV/130.0.0.15.89;] Android 4 Highway SIGNS
Mozilla/5.0 (Linux; Android 4.4.2; CHC-U01 Build/HuaweiCHC-U01) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 [FB_IAB/MESSENGER;FBAV/130.0.0.15.89;] Android 4 G Play Mini