Latest Facebook 521 user agents:

User Agent Platform Device
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22H320 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone11,6;FBMD/iPhone;FBSN/iOS;FBSV/18.7.6;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 18 iPhone XS 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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone16,1;FBMD/iPhone;FBSN/iOS;FBSV/18.5;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 18 iPhone 15 Pro
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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone13,3;FBMD/iPhone;FBSN/iOS;FBSV/18.5;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1];FBNV/1 iOS 18 iPhone 12 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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone14,3;FBMD/iPhone;FBSN/iOS;FBSV/18.6.2;FBSS/3;FBID/phone;FBLC/en_GB;FBOP/5;FBRV/764780440;IABMV/1] iOS 18 iPhone 13 Pro Max
Mozilla/5.0 (iPhone; CPU iPhone OS 26_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23A355 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone14,5;FBMD/iPhone;FBSN/iOS;FBSV/26.0.1;FBSS/3;FBID/phone;FBLC/en_GB;FBOP/5;FBRV/764780440;IABMV/1] iOS 26 iPhone 13
Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22E252 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone16,1;FBMD/iPhone;FBSN/iOS;FBSV/18.4.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 18 iPhone 15 Pro
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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone14,7;FBMD/iPhone;FBSN/iOS;FBSV/26.3.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440] iOS 26 iPhone 14
Mozilla/5.0 (iPad; CPU OS 18_3_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22D82 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPad7,11;FBMD/iPad;FBSN/iPadOS;FBSV/18.3.2;FBSS/2;FBID/tablet;FBLC/en_GB;FBOP/5;FBRV/764780440] iPadOS 18 iPad 7 10.2
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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone17,1;FBMD/iPhone;FBSN/iOS;FBSV/26.3.1;FBSS/3;FBID/phone;FBLC/it_IT;FBOP/5;FBRV/764780440;IABMV/1] iOS 26 iPhone 16 Pro
Mozilla/5.0 (iPhone; CPU iPhone OS 17_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/21H216 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone14,5;FBMD/iPhone;FBSN/iOS;FBSV/17.7.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 17 iPhone 13
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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone13,2;FBMD/iPhone;FBSN/iOS;FBSV/18.5;FBSS/3;FBID/phone;FBLC/it_IT;FBOP/5;FBRV/764780440;IABMV/1] iOS 18 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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone15,3;FBMD/iPhone;FBSN/iOS;FBSV/26.3.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 26 iPhone 14 Pro Max
Mozilla/5.0 (Linux; Android 10; SM-G960U Build/QP1A.190711.020; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/146.0.7680.119 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/521.0.0.42.97;IABMV/1;] Android 10 Galaxy S9
Mozilla/5.0 (Linux; Android 14; SM-S237VL Build/UP1A.231005.007; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.146 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/521.0.0.42.97;IABMV/1;] Android 14 SM-S237VL
Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22E252 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone12,1;FBMD/iPhone;FBSN/iOS;FBSV/18.4.1;FBSS/2;FBID/phone;FBLC/fr_FR;FBOP/5;FBRV/764780440;IABMV/1] iOS 18 iPhone 11
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/521.0.0.38.98;FBBV/760232234;FBDV/iPhone17,1;FBMD/iPhone;FBSN/iOS;FBSV/26.3.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 26 iPhone 16 Pro
Mozilla/5.0 (Linux; Android 13; SM-S136DL Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/146.0.7680.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/521.0.0.42.97;IABMV/1;] Android 13 Galaxy A13 5G
Mozilla/5.0 (iPhone; CPU iPhone OS 16_7_14 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/20H370 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone10,3;FBMD/iPhone;FBSN/iOS;FBSV/16.7.14;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 16 iPhone X
Mozilla/5.0 (iPhone; CPU iPhone OS 26_0_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23A355 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone15,5;FBMD/iPhone;FBSN/iOS;FBSV/26.0.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1];FBNV/1 iOS 26 iPhone 15 Plus
Mozilla/5.0 (iPhone; CPU iPhone OS 26_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23C71 [FBAN/FBIOS;FBAV/521.0.0.38.98;FBBV/760232234;FBDV/iPhone15,2;FBMD/iPhone;FBSN/iOS;FBSV/26.2.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/764780440;IABMV/1] iOS 26 iPhone 14 Pro