Latest Facebook 509 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 10; MED-LX9 Build/HUAWEIMED-LX9; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/92.0.4515.105 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;] Android 10 Y6p
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23D8133 [FBAN/FBIOS;FBAV/509.0.0.52.94;FBBV/721998097;FBDV/iPhone13,2;FBMD/iPhone;FBSN/iOS;FBSV/26.3.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/726005937;IABMV/1] iOS 26 iPhone 12
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23D8133 [FBAN/FBIOS;FBAV/509.0.0.52.94;FBBV/721998097;FBDV/iPhone12,1;FBMD/iPhone;FBSN/iOS;FBSV/26.3.1;FBSS/2;FBID/phone;FBLC/en_US;FBOP/5;FBRV/726005937;IABMV/1] iOS 26 iPhone 11
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_11 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/20H360 [FBAN/FBIOS;FBAV/509.0.0.52.94;FBBV/721998097;FBDV/iPhone10,1;FBMD/iPhone;FBSN/iOS;FBSV/16.7.11;FBSS/2;FBID/phone;FBLC/en_US;FBOP/5;FBRV/726005937;IABMV/1] iOS 16 iPhone 8
WhatsApp/2.2316.6 (Linux; Android 15; ELN-L09 Build/HONORELN-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 15 Pad X9 11.5" LTE
Mozilla/5.0 (Linux; Android 9; YK_P30 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] FBNV/5 Android 9 YK P30
Mozilla/5.0 (Linux; Android 9; YK_P30 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 YK P30
Mozilla/5.0 (Linux; Android 9; Y4800 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 Y4800
Mozilla/5.0 (Linux; Android 9; X20 PRO Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 X20 Pro
Mozilla/5.0 (Linux; Android 9; X19 S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 X19 S
Mozilla/5.0 (Linux; Android 9; vivo X21i Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 X21i
Mozilla/5.0 (Linux; Android 9; UMIDIGI X Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 X
Mozilla/5.0 (Linux; Android 9; U70B Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] FBNV/5 Android 9 U70B
Mozilla/5.0 (Linux; Android 9; U70B Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 U70B
Mozilla/5.0 (Linux; Android 9; Trekker-X4 Build/PKQ1.190414.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 Trekker-X4
Mozilla/5.0 (Linux; Android 9; TBBVNC100005207 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] FBNV/5 Android 9 TBBVNC100005207
Mozilla/5.0 (Linux; Android 9; TBBVNC100005207 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 TBBVNC100005207
Mozilla/5.0 (Linux; Android 9; TBBVNC100005207 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.100 Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 TBBVNC100005207
Mozilla/5.0 (Linux; Android 9; T9S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/135.0.7049.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;IABMV/1;] Android 9 T9 S
Mozilla/5.0 (Linux; Android 9; Spark Plus 3 Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/122.0.6261.64 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/509.0.0.67.28;] Android 9 Plus 3