Latest Facebook 155 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 8.0.0; Pixel Build/OPR6.170623.012; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 8 Pixel
Mozilla/5.0 (Linux; Android 8.0.0; ONEPLUS A5000 Build/OPR6.170623.013; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 8 5
Mozilla/5.0 (Linux; Android 8.0.0; MHA-AL00 Build/HUAWEIMHA-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 8 Mate 9
Mozilla/5.0 (Linux; Android 7.1.2; Wileyfox Swift Build/N2G47Z; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Swift
Mozilla/5.0 (Linux; Android 7.1.2; View XL Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/58.0.3029.83 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 View XL
Mozilla/5.0 (Linux; Android 7.1.2; SM-A500FU Build/NJH47F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/60.0.3112.78 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Galaxy A5 Duos
Mozilla/5.0 (Linux; Android 7.1.2; Livecore7032 Build/NHG47K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Livecore 7032
Mozilla/5.0 (Linux; Android 7.1.2; LEX820 Build/NJH47F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Le Max 2
Mozilla/5.0 (Linux; Android 7.1.2; Aquaris X5 Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Aquaris X5
Mozilla/5.0 (Linux; Android 7.1.2; Aquaris U2 Lite Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Aquaris U2 Lite
Mozilla/5.0 (Linux; Android 7.1.2; Aquaris U2 Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Aquaris U2
Mozilla/5.0 (Linux; Android 7.1.2; Aquaris M5 Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Aquaris M5
Mozilla/5.0 (Linux; Android 7.1.2; A0001 Build/NJH47B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/59.0.3071.92 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 One
Mozilla/5.0 (Linux; Android 7.1.1; ZTE Blade A522 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Blade A522
Mozilla/5.0 (Linux; Android 7.1.1; ZTE Blade A522 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/56.0.2924.87 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Blade A522
Mozilla/5.0 (Linux; Android 7.1.1; Z Pro Build/NMF26O; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/52.0.2743.100 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.22.96;] Android 7 Z Pro
Mozilla/5.0 (Linux; Android 7.1.1; WIM Lite Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 WIM Lite
Mozilla/5.0 (Linux; Android 7.1.1; WIM Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 WIM
Mozilla/5.0 (Linux; Android 7.1.1; VFD 710 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Smart V8
Mozilla/5.0 (Linux; Android 7.1.1; VFD 710 Build/NMF26F; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/56.0.2924.87 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/155.0.0.36.96;] Android 7 Smart V8