Latest Facebook 306 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2020RU 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/306.1.0.40.119;] Android 9 Blade A7 (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/306.1.0.40.119;] 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/77.0.3865.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] 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/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] 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/80.0.3987.99 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Blade A5 (2019)
Mozilla/5.0 (Linux; Android 9; ZTE 2050 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/306.1.0.40.119;] Android 9 Blade 20 Smart
Mozilla/5.0 (Linux; Android 9; Z6621O Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/80.0.3987.162 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Optus X Vista
Mozilla/5.0 (Linux; Android 9; X19 S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/103.0.5060.129 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 X19 S
Mozilla/5.0 (Linux; Android 9; WP6 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/306.1.0.40.119;] 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/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] 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/88.0.4324.152 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Y80
Mozilla/5.0 (Linux; Android 9; W-K510-EEA Build/PPR1.181008.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Y60
Mozilla/5.0 (Linux; Android 9; VTR-L09 Build/HUAWEIVTR-L0901; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 P10
Mozilla/5.0 (Linux; Android 9; VKY-L09 Build/HUAWEIVKY-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 P10 Plus
Mozilla/5.0 (Linux; Android 9; vivo 1906 Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Y11
Mozilla/5.0 (Linux; Android 9; VFD 730 Build/PKQ1.190407.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Smart V10
Mozilla/5.0 (Linux; Android 9; V1930A Build/PKQ1.190616.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/107.0.5304.141 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Y3 Standard
Mozilla/5.0 (Linux; Android 9; TECNO KC8 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/306.1.0.40.119;] Android 9 Spark 4
Mozilla/5.0 (Linux; Android 9; TECNO BB4k 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/306.1.0.40.119;] Android 9 Spark 4 Lite
Mozilla/5.0 (Linux; Android 9; STF-L09S Build/HUAWEISTF-L09S; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/88.0.4324.181 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/306.1.0.40.119;] Android 9 Honor 9