Latest Facebook 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/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Blade A7s
Mozilla/5.0 (Linux; Android 9; ZTE Blade 10 Vita Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.196 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Blade 10 Vita
Mozilla/5.0 (Linux; Android 9; ZTE Blade 10 Vita Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Blade 10 Vita
Mozilla/5.0 (Linux; Android 9; ZTE Blade 10 Vita Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.130 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Blade 10 Vita
Mozilla/5.0 (Linux; Android 9; ZTE A2019G Pro Build/PKQ1.181203.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Axon 9 Pro
Mozilla/5.0 (Linux; Android 9; Z6201V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.196 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Blade A7
Mozilla/5.0 (Linux; Android 9; Z6201V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.147 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Blade A7
Mozilla/5.0 (Linux; Android 9; Z6201V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.130 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Blade A7
Mozilla/5.0 (Linux; Android 9; Z3351S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.131 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Quest 5
Mozilla/5.0 (Linux; Android 9; Y8 Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.196 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Y8
Mozilla/5.0 (Linux; Android 9; Y4800 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Y4800
Mozilla/5.0 (Linux; Android 9; X90L Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 X90L
Mozilla/5.0 (Linux; Android 9; X2_euro Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.131 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 X2
Mozilla/5.0 (Linux; Android 9; X19 S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 X19 S
Mozilla/5.0 (Linux; Android 9; Wildfire E1 Plus Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Wildfire E1 Plus
Mozilla/5.0 (Linux; Android 9; W109 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.196 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 W109
Mozilla/5.0 (Linux; Android 9; W-P611-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 View 3 Pro
Mozilla/5.0 (Linux; Android 9; W-P611-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.131 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 View 3 Pro
Mozilla/5.0 (Linux; Android 9; W-K510-EEA Build/PPR1.181008.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/114.0.5735.130 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Y60
Mozilla/5.0 (Linux; Android 9; vivo Z1i Build/PKQ1.180819.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.138 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/420.0.0.32.61;] Android 9 Z1i