Latest Facebook 400 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE A2019G Pro Build/PKQ1.181203.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/99.0.4844.88 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Axon 9 Pro
Mozilla/5.0 (Linux; Android 9; ZTE A2019G Pro Build/PKQ1.181203.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.118 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Axon 9 Pro
Mozilla/5.0 (Linux; Android 9; ZTE A2019G Pro Build/PKQ1.181203.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.117 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] 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/109.0.5414.117 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] 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/109.0.5414.117 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Blade A7
Mozilla/5.0 (Linux; Android 9; YK_P30 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.117 Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 YK P30
Mozilla/5.0 (Linux; Android 9; Y9Plus Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.117 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Y9 Plus
Mozilla/5.0 (Linux; Android 9; X19 S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.63 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 X19 S
Mozilla/5.0 (Linux; Android 9; X19 S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.118 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 X19 S
Mozilla/5.0 (Linux; Android 9; UNONU N55S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.118 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 N55S
Mozilla/5.0 (Linux; Android 9; U307AS Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.85 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Life 2
Mozilla/5.0 (Linux; Android 9; U304AC Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.117 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Icon
Mozilla/5.0 (Linux; Android 9; Twist SE Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/108.0.5359.128 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Twist SE
Mozilla/5.0 (Linux; Android 9; THANOS_10 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.118 Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Thanos 10
Mozilla/5.0 (Linux; Android 9; THANOS_10 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.117 Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Thanos 10
Mozilla/5.0 (Linux; Android 9; TECNO KC1 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Spark Air
Mozilla/5.0 (Linux; Android 9; TECNO KC1 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.105 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Spark Air
Mozilla/5.0 (Linux; Android 9; TECNO CC9 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/110.0.5481.65 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 Camon 12 Pro
Mozilla/5.0 (Linux; Android 9; TBBVNC100005207 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.118 Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 TBBVNC100005207
Mozilla/5.0 (Linux; Android 9; T9S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/109.0.5414.118 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/400.0.0.37.76;] Android 9 T9 S