Latest Facebook 551 user agents:

User Agent Platform Device
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F77 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone14,5;FBMD/iPhone;FBSN/iOS;FBSV/26.5;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906493495;IABMV/1] iOS 26 iPhone 13
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F77 Safari/604.1 [FBAN/FBIOS;FBAV/551.0.0.39.67;FBBV/897790831;FBDV/iPhone17,4;FBMD/iPhone;FBSN/iOS;FBSV/26.5;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/0;IABMV/1] iOS 26 iPhone 16 Plus
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F77 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone12,3;FBMD/iPhone;FBSN/iOS;FBSV/26.5;FBSS/3;FBID/phone;FBLC/en_GB;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone 11 Pro
Mozilla/5.0 (iPhone; CPU iPhone OS 26_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23C55 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone12,8;FBMD/iPhone;FBSN/iOS;FBSV/26.2;FBSS/2;FBID/phone;FBLC/es_LA;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone SE (2020)
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22H31 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone12,1;FBMD/iPhone;FBSN/iOS;FBSV/18.7.1;FBSS/2;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1];FBNV/1 iOS 18 iPhone 11
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F81 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone18,5;FBMD/iPhone;FBSN/iOS;FBSV/26.5.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone 17e
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F77 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone16,1;FBMD/iPhone;FBSN/iOS;FBSV/26.5;FBSS/3;FBID/phone;FBLC/en_GB;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone 15 Pro
Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22A3354 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone15,4;FBMD/iPhone;FBSN/iOS;FBSV/18.0;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1];FBNV/1 iOS 18 iPhone 15
Mozilla/5.0 (iPhone; CPU iPhone OS 18_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22A3354 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone15,4;FBMD/iPhone;FBSN/iOS;FBSV/18.0;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1] iOS 18 iPhone 15
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22H352 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone17,2;FBMD/iPhone;FBSN/iOS;FBSV/18.7.8;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1] iOS 18 iPhone 16 Pro Max
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F81 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone18,1;FBMD/iPhone;FBSN/iOS;FBSV/26.5.1;FBSS/3;FBID/phone;FBLC/en_GB;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone 17 Pro
Mozilla/5.0 (iPhone; CPU iPhone OS 18_7 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22H352 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone17,3;FBMD/iPhone;FBSN/iOS;FBSV/18.7.8;FBSS/3;FBID/phone;FBLC/en_Qaau_US;FBOP/5;FBRV/906413714;IABMV/1] iOS 18 iPhone 16
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F81 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone18,3;FBMD/iPhone;FBSN/iOS;FBSV/26.5.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone 17
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23D127 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone13,4;FBMD/iPhone;FBSN/iOS;FBSV/26.3;FBSS/3;FBID/phone;FBLC/vi_VN;FBOP/5;FBRV/906413714;IABMV/1];FBNV/1 iOS 26 iPhone 12 Pro Max
Mozilla/5.0 (iPhone; CPU iPhone OS 26_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23D127 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone13,4;FBMD/iPhone;FBSN/iOS;FBSV/26.3;FBSS/3;FBID/phone;FBLC/vi_VN;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone 12 Pro Max
Mozilla/5.0 (iPhone; CPU iPhone OS 26_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23C71 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone14,8;FBMD/iPhone;FBSN/iOS;FBSV/26.2.1;FBSS/3;FBID/phone;FBLC/it_IT;FBOP/5;FBRV/906413714;IABMV/1] iOS 26 iPhone 14 Plus
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F77 Safari/604.1 [FBAN/FBIOS;FBAV/551.0.0.39.67;FBBV/897790831;FBDV/iPhone15,5;FBMD/iPhone;FBSN/iOS;FBSV/26.5;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/0;IABMV/1] iOS 26 iPhone 15 Plus
Mozilla/5.0 (iPhone; CPU iPhone OS 26_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23F77 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone15,5;FBMD/iPhone;FBSN/iOS;FBSV/26.5;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1];FBNV/1 iOS 26 iPhone 15 Plus
Mozilla/5.0 (iPhone; CPU iPhone OS 26_4_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/23E261 Safari/604.1 [FBAN/FBIOS;FBAV/551.1.0.46.67;FBBV/899660416;FBDV/iPhone15,4;FBMD/iPhone;FBSN/iOS;FBSV/26.4.2;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/906413714;IABMV/1];FBNV/1 iOS 26 iPhone 15
Mozilla/5.0 (iPhone; CPU iPhone OS 16_1_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/20B101 Safari/604.1 [FBAN/FBIOS;FBAV/551.0.0.39.67;FBBV/897790831;FBDV/iPhone12,8;FBMD/iPhone;FBSN/iOS;FBSV/16.1.1;FBSS/2;FBID/phone;FBLC/hr_HR;FBOP/5;FBRV/0;IABMV/1] iOS 16 iPhone SE (2020)