Latest Facebook 506 user agents:

User Agent Platform Device
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/506.1.0.77.87;FBBV/714726354;FBDV/iPhone16,2;FBMD/iPhone;FBSN/iOS;FBSV/26.3.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5;FBRV/717677729;IABMV/1] iOS 26 iPhone 15 Pro Max
Mozilla/5.0 (Linux; Android 13; SM-A037F Build/TP1A.220624.014; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/136.0.7103.125 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.0.0.61.109;] Android 13 Galaxy A03s
Mozilla/5.0 (iPhone; CPU iPhone OS 18_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/22E240 [FBAN/FBIOS;FBAV/506.1.0.77.87;FBBV/714726354;FBDV/iPhone12,1;FBMD/iPhone;FBSN/iOS;FBSV/18.4;FBSS/2;FBID/phone;FBLC/en_US;FBOP/5;FBRV/717677729;IABMV/1] iOS 18 iPhone 11
Mozilla/5.0 (Linux; Android 12; V2061 Build/SP1A.210812.003; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.122 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 12 V21e
Mozilla/5.0 (Linux; Android 16; SM-A256B Build/BP2A.250605.031.A3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/145.0.7632.159 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 16 Galaxy A25 5G
Mozilla/5.0 (Linux; Android 9; ZT216_1 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] FBNV/5 Android 9 ZT216
Mozilla/5.0 (Linux; Android 9; ZT216_1 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 9 ZT216
Mozilla/5.0 (Linux; Android 9; Z6621O Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 9 Optus X Vista
Mozilla/5.0 (Linux; Android 9; X20 PRO Build/P00610; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 9 X20 Pro
Mozilla/5.0 (Linux; Android 9; vivo 1725 Build/PKQ1.180819.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 9 X21
Mozilla/5.0 (Linux; Android 9; V1941A Build/PKQ1.190302.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/74.0.3729.136 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;] Android 9 U3
Mozilla/5.0 (Linux; Android 9; V1941A Build/PKQ1.190302.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] FBNV/5 Android 9 U3
Mozilla/5.0 (Linux; Android 9; V1941A Build/PKQ1.190302.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 9 U3
Mozilla/5.0 (Linux; Android 9; V1941A Build/PKQ1.190302.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.135 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 9 U3
Mozilla/5.0 (Linux; Android 9; UMIDIGI X Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;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/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;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/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;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/134.0.6998.170 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;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/134.0.6998.170 Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] Android 9 TBBVNC100005207
Mozilla/5.0 (Linux; Android 9; SM-T867V Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/134.0.6998.170 Safari/537.36 [FB_IAB/FB4A;FBAV/506.1.0.74.27;IABMV/1;] FBNV/5 Android 9 Galaxy Tab S6 10.5" LTE