Latest Facebook 323 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE Blade V10 Vita RU Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Blade V10 Vita
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7s 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/323.0.0.46.119;] 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/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Blade A3 (2020)
Mozilla/5.0 (Linux; Android 9; Z6201V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/101.0.4951.41 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Blade A7
Mozilla/5.0 (Linux; Android 9; X20 PRO Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 X20 Pro
Mozilla/5.0 (Linux; Android 9; WP6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 WP6
Mozilla/5.0 (Linux; Android 9; W-V720-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Y80
Mozilla/5.0 (Linux; Android 9; W-P311-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 View 3
Mozilla/5.0 (Linux; Android 9; VTR-L29 Build/HUAWEIVTR-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 P10
Mozilla/5.0 (Linux; Android 9; vivo Z1i Build/PKQ1.180819.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Z1i
Mozilla/5.0 (Linux; Android 9; VIVO Y3s 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/FB4A;FBAV/323.0.0.46.119;] Android 9 Y3s
Mozilla/5.0 (Linux; Android 9; vivo 1921 Build/PKQ1.190302.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 U20
Mozilla/5.0 (Linux; Android 9; V1934A Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Y5s
Mozilla/5.0 (Linux; Android 9; V1913A Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.132 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Y7s
Mozilla/5.0 (Linux; Android 9; U70B 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/FB4A;FBAV/323.0.0.46.119;] Android 9 U70B
Mozilla/5.0 (Linux; Android 9; U307AS Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/101.0.4951.61 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Life 2
Mozilla/5.0 (Linux; Android 9; SM-N950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-G973 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/87.0.4280.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Galaxy S10
Mozilla/5.0 (Linux; Android 9; SM-G889YB Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/323.0.0.46.119;] Android 9 Galaxy Xcover FieldPro