Latest Facebook Messenger 375 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; V1901A Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 9 Y3
Mozilla/5.0 (Linux; Android 9; TECNO BB4k Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/93.0.4577.82 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 9 Spark 4 Lite
Mozilla/5.0 (Linux; Android 9; STK-LX1 Build/HUAWEISTK-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 9 P smart Z
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G390F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 9 Galaxy Xcover 4
Mozilla/5.0 (Linux; Android 9; INE-LX2 Build/HUAWEIINE-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 9 Nova 3i
Mozilla/5.0 (Linux; Android 9; FIG-LA1 Build/HUAWEIFIG-LA1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 9 P smart
Mozilla/5.0 (Linux; Android 8.1.0; Redmi 6A Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 8 Redmi 6A
Mozilla/5.0 (Linux; Android 8.1.0; MI PLAY Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 8 Mi Play
Mozilla/5.0 (Linux; Android 8.1.0; BKK-LX2 Build/HONORBKK-LX2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 8 Honor 8C
Mozilla/5.0 (Linux; Android 8.0.0; SM-G935F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 8 Galaxy S7 Edge
Mozilla/5.0 (Linux; Android 8.0.0; SM-G930F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 8 Galaxy S7
Mozilla/5.0 (Linux; Android 8.0.0; ANE-LX1 Build/HUAWEIANE-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 8 P20 Lite
Mozilla/5.0 (Linux; Android 7.1.2; Redmi 4A Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 7 Redmi 4A
Mozilla/5.0 (Linux; Android 7.0; SM-G925F Build/NRD90M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 7 Galaxy S6 Edge
Mozilla/5.0 (Linux; Android 6.0; CPH1609 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 6 F3
Mozilla/5.0 (Linux; Android 6.0.1; Neffos Y5 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/54.0.2840.85 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 6 Y5
Mozilla/5.0 (Linux; Android 13; SM-A136U Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/104.0.5112.97 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 13 Galaxy A13 5G
Mozilla/5.0 (Linux; Android 12; V2126 Build/SP1A.210812.003_NONFC; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/103.0.5060.129 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 12 V23e 5G
Mozilla/5.0 (Linux; Android 12; V2124 Build/SP1A.210812.003; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.114 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/375.0.0.17.104;] Android 12 Y76 5G