Latest Facebook Messenger 420 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7s Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 9 Blade A7s
Mozilla/5.0 (Linux; Android 9; Lenovo ThinkPad 11e 3rd Gen Chromebook Build/R103-14816.131.0; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Chrome OS 14816 ThinkPad 11e 3rd Gen Chromebook
Mozilla/5.0 (Linux; Android 8.1.0; Vivo XL4 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.139 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 8 Vivo XL4
Mozilla/5.0 (Linux; Android 8.1.0; Gravity_5_GO Build/OPM2.171019.012; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 8 Gravity 5 GO
Mozilla/5.0 (Linux; Android 7.0; NEM-L22 Build/HONORNEM-L22; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.139 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 7 Honor 5C Dual SIM
Mozilla/5.0 (Linux; Android 6.0; PGN522 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/95.0.4638.74 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 6 P6 Plus
Mozilla/5.0 (Linux; Android 6.0; Ilium L910 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/106.0.5249.126 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 6 Ilium L910
Mozilla/5.0 (Linux; Android 13; SM-A715F Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/113.0.5672.131 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 13 Galaxy A71
Mozilla/5.0 (Linux; Android 13; SM-A536B Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 13 Galaxy A53 5G
Mozilla/5.0 (Linux; Android 13; SM-A515F Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 13 Galaxy A51
Mozilla/5.0 (Linux; Android 13; CPH2337 Build/TP1A.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/113.0.5672.163 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 13 K10 5G
Mozilla/5.0 (Linux; Android 12; SM-N970F Build/SP1A.210812.016; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 12 Galaxy Note 10
Mozilla/5.0 (Linux; Android 12; SM-G973W Build/SP1A.210812.016; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 12 Galaxy S10
Mozilla/5.0 (Linux; Android 12; SM-A032M Build/SP1A.210812.016; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 12 Galaxy A03 Core
Mozilla/5.0 (Linux; Android 12; 220333QBI Build/SKQ1.211103.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/112.0.5615.136 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 12 Redmi 10 Power
Mozilla/5.0 (Linux; Android 11; SM-A507FN Build/RP1A.200720.012; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 11 Galaxy A50s
Mozilla/5.0 (Linux; Android 11; Multilaser_E_Pro Build/V3_20211102; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 11 E Pro
Mozilla/5.0 (Linux; Android 11; Lenovo K14 Plus Build/ROQS31.166-87-9; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 11 K14 Plus
Mozilla/5.0 (Linux; Android 11; A55 Pro Build/RP1A.200720.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 11 A55 Pro
Mozilla/5.0 (Linux; Android 10; MAR-LX2 Build/HUAWEIMAR-L22B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/111.0.5563.116 Mobile Safari/537.36 [FB_IAB/Orca-Android;FBAV/420.0.0.15.50;] Android 10 P30 Lite