Latest Facebook 431 user agents:

User Agent Platform Device
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0 FBAN/FB4A;FBAV/431.0.0.34.108;FBBV/594567890;FBLC/id_ID Windows 10 Unknown
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7s Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Blade A7s
Mozilla/5.0 (Linux; Android 9; ZTE Blade A3 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Blade A3 (2020)
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/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] 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/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Axon 9 Pro
Mozilla/5.0 (Linux; Android 9; ZTE A2019 Pro Build/PKQ1.181105.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Axon 9 Pro
Mozilla/5.0 (Linux; Android 9; Z6621O Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.166 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Optus X Vista
Mozilla/5.0 (Linux; Android 9; Z6201V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Blade A7
Mozilla/5.0 (Linux; Android 9; Y9Plus Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/100.0.4896.58 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Y9 Plus
Mozilla/5.0 (Linux; Android 9; Y8 Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] 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/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Y4800
Mozilla/5.0 (Linux; Android 9; X19 S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 X19 S
Mozilla/5.0 (Linux; Android 9; X19 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 X19
Mozilla/5.0 (Linux; Android 9; X109 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 X109
Mozilla/5.0 (Linux; Android 9; X104-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 X104
Mozilla/5.0 (Linux; Android 9; WP7 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 WP7
Mozilla/5.0 (Linux; Android 9; W109 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] 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/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 View 3 Pro
Mozilla/5.0 (Linux; Android 9; vivo Z1i Build/PKQ1.180819.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Z1i
Mozilla/5.0 (Linux; Android 9; vivo Z1 Build/PKQ1.180819.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/116.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/431.0.0.30.108;] Android 9 Z1