Latest Facebook 338 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 9; ZTE Blade V1000RU 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/338.1.0.36.118;] Android 9 Blade V10
Mozilla/5.0 (Linux; Android 9; ZTE Blade L8 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/338.1.0.36.118;] 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/94.0.4606.61 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 Blade A5 (2020)
Mozilla/5.0 (Linux; Android 9; Z6201V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/96.0.4664.45 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 Blade A7
Mozilla/5.0 (Linux; Android 9; Z6201V 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/338.1.0.36.118;] Android 9 Blade A7
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/338.1.0.36.118;] 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/338.1.0.36.118;] Android 9 Xperia L4
Mozilla/5.0 (Linux; Android 9; X90L Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 X90L
Mozilla/5.0 (Linux; Android 9; X90L Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.61 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 X90L
Mozilla/5.0 (Linux; Android 9; WP5 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/338.1.0.36.118;] Android 9 WP5
Mozilla/5.0 (Linux; Android 9; W-V800-OPE 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/338.1.0.36.118;] 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/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] 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/94.0.4606.61 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] 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/92.0.4515.159 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] 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/77.0.3865.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 Y80
Mozilla/5.0 (Linux; Android 9; vivo 1902 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/85.0.4183.81 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 Y17
Mozilla/5.0 (Linux; Android 9; VIEW 1 Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.71 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 View 1
Mozilla/5.0 (Linux; Android 9; VFD 730 Build/PKQ1.190407.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.61 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 Smart V10
Mozilla/5.0 (Linux; Android 9; VFD 630 Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/94.0.4606.61 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 Smart N10
Mozilla/5.0 (Linux; Android 9; TBBVNC100005207 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/115.0.5790.166 Safari/537.36 [FB_IAB/FB4A;FBAV/338.1.0.36.118;] Android 9 TBBVNC100005207