Latest Facebook 519 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 16; SM-S906E Build/BP2A.250605.031.A3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 16 Galaxy S22+
Mozilla/5.0 (Linux; Android 16; 23090RA98C Build/BP2A.250605.031.A3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] FBNV/5 Android 16 Redmi Note 13 Pro+
Mozilla/5.0 (iPhone; CPU iPhone OS 18_6_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22G100 [FBAN/FBIOS;FBAV/519.1.0.40.99;FBBV/753726094;FBDV/iPhone13,4;FBMD/iPhone;FBSN/iOS;FBSV/18.6.2;FBSS/3;FBID/phone;FBLC/en_GB;FBOP/5;FBRV/757734483;IABMV/1] iOS 18 iPhone 12 Pro Max
Mozilla/5.0 (iPhone; CPU iPhone OS 18_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22F76 [FBAN/FBIOS;FBAV/519.1.0.40.99;FBBV/753726094;FBDV/iPhone17,3;FBMD/iPhone;FBSN/iOS;FBSV/18.5;FBSS/3;FBID/phone;FBLC/it_IT;FBOP/5;FBRV/757734483;IABMV/1] iOS 18 iPhone 16
Mozilla/5.0 (Linux; Android 9; YAL Build/HUAWEIYAL; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 YAL
Mozilla/5.0 (Linux; Android 9; X19 S Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 X19 S
Mozilla/5.0 (Linux; Android 9; VIA_P3 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] FBNV/5 Android 9 VIA P3
Mozilla/5.0 (Linux; Android 9; VIA_P3 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 VIA P3
Mozilla/5.0 (Linux; Android 9; VIA_E3 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 VIA E3
Mozilla/5.0 (Linux; Android 9; Trekker-X4 Build/PKQ1.190414.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 Trekker-X4
Mozilla/5.0 (Linux; Android 9; Teracube One Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] FBNV/5 Android 9 One
Mozilla/5.0 (Linux; Android 9; SM-T865 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 Galaxy Tab S6 10.5"
Mozilla/5.0 (Linux; Android 9; SM-N950U Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 Galaxy Note 8
Mozilla/5.0 (Linux; Android 9; SHT-AL09 Build/HUAWEISHT-AL09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 MediaPad M5 8.4
Mozilla/5.0 (Linux; Android 9; S95Pro Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 S95 Pro
Mozilla/5.0 (Linux; Android 9; RCT6B06P23 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 Atlas 10.0"
Mozilla/5.0 (Linux; Android 9; RCT6613W23PG Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 Delta Pro 11.6"
Mozilla/5.0 (Linux; Android 9; R15_PRO Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 R15 Pro
Mozilla/5.0 (Linux; Android 9; Pearl K3 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/137.0.7151.89 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 Pearl K3
Mozilla/5.0 (Linux; Android 9; P609 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.42 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/519.0.0.44.92;IABMV/1;] Android 9 Optus X Wave