Latest Facebook 339 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE Blade A7 2019 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Blade A7 (2019)
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/94.0.4606.80 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] 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/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Blade A5 (2019)
Mozilla/5.0 (Linux; Android 9; XQ-AD51 Build/57.0.A.2.295; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Xperia L4
Mozilla/5.0 (Linux; Android 9; XQ-AD51 Build/57.0.A.2.242; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Xperia L4
Mozilla/5.0 (Linux; Android 9; X20 PRO Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/86.0.4240.198 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 X20 Pro
Mozilla/5.0 (Linux; Android 9; X19 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/72.0.3626.121 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] 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/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 WP6
Mozilla/5.0 (Linux; Android 9; VTR-L09 Build/HUAWEIVTR-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.80 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 P10
Mozilla/5.0 (Linux; Android 9; VTR-L09 Build/HUAWEIVTR-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 P10
Mozilla/5.0 (Linux; Android 9; vivo 1916 Build/PKQ1.190626.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 U10
Mozilla/5.0 (Linux; Android 9; VIA_E3 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 VIA E3
Mozilla/5.0 (Linux; Android 9; U693CL Build/U693CL_01.02.01; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 UMX U693CL
Mozilla/5.0 (Linux; Android 9; U307AS Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/79.0.3945.116 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] 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/94.0.4606.80 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-N950F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SM-J730GM Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.85 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Galaxy J7 Pro
Mozilla/5.0 (Linux; Android 9; SM-J530F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.80 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Galaxy J5 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J330FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.32.118;] Android 9 Galaxy J3 (2017)
Mozilla/5.0 (Linux; Android 9; SM-J330FN Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.61 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/339.0.0.20.118;] Android 9 Galaxy J3 (2017)