Latest Facebook 544 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 8.0.0; RNE-L21 Build/HUAWEIRNE-L21; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 8 Mate 10 Lite
Mozilla/5.0 (Linux; Android 15; helio 45 Build/AP3A.240905.015.A2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 15 Unknown
Mozilla/5.0 (Linux; Android 9; SM-G970F Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/138.0.7204.179 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 9 Galaxy S10e
Mozilla/5.0 (Linux; Android 15; TECNO KM7 Build/AP3A.240905.015.A2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 15 KM7
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/544.0.0.32.278;FBBV/860466667;FBDV/iPhone14,5;FBMD/iPhone;FBSN/iOS;FBSV/26.3;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/868588164;IABMV/1] iOS 26 iPhone 13
Mozilla/5.0 (Linux; Android 15; Infinix X6880 Build/AP3A.240905.015.A2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/144.0.7559.82 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] FBNV/500 Android 15 Hot 50 Pro+
Mozilla/5.0 (Linux; Android 15; Infinix X6880 Build/AP3A.240905.015.A2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/144.0.7559.82 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 15 Hot 50 Pro+
Mozilla/5.0 (Linux; Android 10; Infinix X680B Build/QP1A.190711.020; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 10 Hot 9 Play
Mozilla/5.0 (Linux; Android 14; V2307 Build/UP1A.231005.007; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 14 Y200 5G
Mozilla/5.0 (Linux; Android 13; V2066 Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 13 V21
Mozilla/5.0 (Linux; Android 16; SM-S731U Build/BP2A.250605.031.A3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/144.0.7559.82 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] FBNV/500 Android 16 SM-S731U
Mozilla/5.0 (Linux; Android 15; CPH2591 Build/AP3A.240617.008; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/144.0.7559.82 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 15 A18
Mozilla/5.0 (Linux; Android 14; 23053RN02I Build/UP1A.231005.007; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/144.0.7559.82 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] FBNV/500 Android 14 Redmi 12
Mozilla/5.0 (Linux; Android 13; TECNO KI7 Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 13 Spark 10 Pro
Mozilla/5.0 (Linux; Android 14; 24117RN76E Build/UP1A.231005.007; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/144.0.7559.82 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 14 Redmi Note 14
Mozilla/5.0 (Linux; Android 12; V2120 Build/SP1A.210812.003; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.159 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 12 Y15s
Mozilla/5.0 (iPhone; CPU iPhone OS 17_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/21G93 Safari/604.1 [FBAN/FBIOS;FBAV/544.0.0.32.278;FBBV/860466667;FBDV/iPhone12,3;FBMD/iPhone;FBSN/iOS;FBSV/17.6.1;FBSS/3;FBID/phone;FBLC/it_IT;FBOP/5;FBRV/868588164;IABMV/1] iOS 17 iPhone 11 Pro
Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22E252 Safari/604.1 [FBAN/FBIOS;FBAV/544.0.0.32.278;FBBV/860466667;FBDV/iPhone12,1;FBMD/iPhone;FBSN/iOS;FBSV/18.4.1;FBSS/2;FBID/phone;FBLC/en_GB;FBOP/5;FBRV/868588164;IABMV/1] iOS 18 iPhone 11
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/544.0.0.32.278;FBBV/860466667;FBDV/iPhone16,2;FBMD/iPhone;FBSN/iOS;FBSV/26.3;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/868588164;IABMV/1] iOS 26 iPhone 15 Pro Max
Mozilla/5.0 (Linux; Android 12; V2120 Build/SP1A.210812.003; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.120 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/544.0.0.42.272;IABMV/1;] Android 12 Y15s