Latest Facebook 165 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 8.1.0; TA-1033 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 6
Mozilla/5.0 (Linux; Android 8.0.0; SM-G9600 Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Galaxy S9
Mozilla/5.0 (Linux; Android 8.0.0; SM-G950F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Galaxy S8
Mozilla/5.0 (Linux; Android 8.0.0; ONEPLUS A5010 Build/OPR1.170623.032; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 5T
Mozilla/5.0 (Linux; Android 8.0.0; ONEPLUS A5000 Build/OPR1.170623.032; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 5
Mozilla/5.0 (Linux; Android 8.0.0; ONEPLUS A3010 Build/OPR6.170623.013; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 3T
Mozilla/5.0 (Linux; Android 8.0.0; ONEPLUS A3003 Build/OPR6.170623.013; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 3
Mozilla/5.0 (Linux; Android 8.0.0; ONEPLUS A3000 Build/OPR6.170623.013; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 3
Mozilla/5.0 (Linux; Android 8.0.0; Moto Z (2) Build/OCX27.109-48; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Moto Z2
Mozilla/5.0 (Linux; Android 8.0.0; Mi A1 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Mi A1
Mozilla/5.0 (Linux; Android 8.0.0; MI 6 Build/OPR1.170623.027; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Mi 6
Mozilla/5.0 (Linux; Android 8.0.0; G8441 Build/47.1.A.12.119; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XZ1 Compact
Mozilla/5.0 (Linux; Android 8.0.0; G8342 Build/47.1.A.12.119; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XZ1
Mozilla/5.0 (Linux; Android 8.0.0; G8341 Build/47.1.A.12.75; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XZ1
Mozilla/5.0 (Linux; Android 8.0.0; G8141 Build/47.1.A.12.119; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XZ Premium
Mozilla/5.0 (Linux; Android 8.0.0; G3121 Build/48.1.A.0.129; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XA1
Mozilla/5.0 (Linux; Android 8.0.0; G3116 Build/48.1.A.0.129; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XA1
Mozilla/5.0 (Linux; Android 8.0.0; F8332 Build/41.3.A.2.99; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XZ
Mozilla/5.0 (Linux; Android 8.0.0; F8331 Build/41.3.A.2.24; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia XZ
Mozilla/5.0 (Linux; Android 8.0.0; F8131 Build/41.3.A.2.107; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/65.0.3325.109 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/165.0.0.53.93;] Android 8 Xperia X Performance