Latest Facebook 309 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/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade V10 Vita
Mozilla/5.0 (Linux; Android 9; ZTE Blade L8 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade L8
Mozilla/5.0 (Linux; Android 9; ZTE Blade A5 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade A5 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A5 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade A5 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A5 2020 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade A5 (2020)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A5 2019 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade A5 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A5 2019 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade A5 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE Blade A5 2019 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Blade A5 (2019)
Mozilla/5.0 (Linux; Android 9; X19 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 X19
Mozilla/5.0 (Linux; Android 9; WP6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 WP6
Mozilla/5.0 (Linux; Android 9; WP6 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 WP6
Mozilla/5.0 (Linux; Android 9; WP5 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 WP5
Mozilla/5.0 (Linux; Android 9; W-V800-TIM Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 View 3 Lite
Mozilla/5.0 (Linux; Android 9; W-V800-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 View 3 Lite
Mozilla/5.0 (Linux; Android 9; W-V800-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.93 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 View 3 Lite
Mozilla/5.0 (Linux; Android 9; W-V720-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.131 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Y80
Mozilla/5.0 (Linux; Android 9; W-V720-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.90 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Y80
Mozilla/5.0 (Linux; Android 9; W-V720-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.86 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Y80
Mozilla/5.0 (Linux; Android 9; W-V720-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/89.0.4389.105 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Y80
Mozilla/5.0 (Linux; Android 9; W-V720-EEA Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.93 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/309.0.0.47.119;] Android 9 Y80