Latest Facebook Messenger 338 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; vivo 1906 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.61 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Y11
Mozilla/5.0 (Linux; Android 9; SM-N960F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Galaxy Note 9
Mozilla/5.0 (Linux; Android 9; SM-J730F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.45 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J330F 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/338.1.0.11.117;] Android 9 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Galaxy S8
Mozilla/5.0 (Linux; Android 9; SM-A507FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.119 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Galaxy A50s
Mozilla/5.0 (Linux; Android 9; RMX1942 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 C2
Mozilla/5.0 (Linux; Android 9; Redmi 6A Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Redmi 6A
Mozilla/5.0 (Linux; Android 9; Redmi 6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Redmi 6
Mozilla/5.0 (Linux; Android 9; Mi A1 Build/PKQ1.180917.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Mi A1
Mozilla/5.0 (Linux; Android 9; MI 6X Build/PKQ1.180904.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.104 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Mi 6X
Mozilla/5.0 (Linux; Android 9; LM-X525 Build/PKQ1.190223.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Q60
Mozilla/5.0 (Linux; Android 9; LM-G710VM Build/PKQ1.181105.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.45 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 G7 ThinQ
Mozilla/5.0 (Linux; Android 9; KFMAWI Build/PS7322; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Fire OS 7 Fire HD 10 (2019)
Mozilla/5.0 (Linux; Android 9; INE-LX1 Build/HUAWEIINE-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.45 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Nova 3i
Mozilla/5.0 (Linux; Android 9; FIG-LX1 Build/HUAWEIFIG-L31; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.45 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 P smart
Mozilla/5.0 (Linux; Android 9; AMN-LX9 Build/HUAWEIAMN-LX9; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Y5 (2019)
Mozilla/5.0 (Linux; Android 9; AMN-LX1 Build/HUAWEIAMN-LX1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/338.1.0.11.117;] Android 9 Y5 (2019)