Latest Facebook 173 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 8.1.0; TA-1053 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/67.0.3396.68 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 5
Mozilla/5.0 (Linux; Android 8.1.0; TA-1004 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.49.99;] Android 8 8
Mozilla/5.0 (Linux; Android 8.1.0; Pixel 2 XL Build/OPM2.171019.029.B1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Pixel 2 XL
Mozilla/5.0 (Linux; Android 8.1.0; ONEPLUS A5010 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.49.99;] Android 8 5T
Mozilla/5.0 (Linux; Android 8.1.0; Nokia 7 plus Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.34.99;] Android 8 7 plus
Mozilla/5.0 (Linux; Android 8.1.0; Nokia 1 Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 1
Mozilla/5.0 (Linux; Android 8.1.0; Infinix X5515I Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Smart 2
Mozilla/5.0 (Linux; Android 8.1.0; CLT-L29 Build/HUAWEICLT-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 P20 Pro
Mozilla/5.0 (Linux; Android 8.1.0; Aquaris X Pro Build/OPM1.171019.019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Aquaris X Pro
Mozilla/5.0 (Linux; Android 8.0.0; SM-G950F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.106 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Galaxy S8
Mozilla/5.0 (Linux; Android 8.0.0; SM-G935F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.58.99;] Android 8 Galaxy S7 Edge
Mozilla/5.0 (Linux; Android 8.0.0; SM-G930F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Galaxy S7
Mozilla/5.0 (Linux; Android 8.0.0; SM-A720F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Galaxy A7 (2017)
Mozilla/5.0 (Linux; Android 8.0.0; F8131 Build/41.3.A.2.99; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Xperia X Performance
Mozilla/5.0 (Linux; Android 8.0.0; F5121 Build/34.4.A.2.70; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 8 Xperia X
Mozilla/5.0 (Linux; Android 7.1.2; View XL Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 7 View XL
Mozilla/5.0 (Linux; Android 7.1.2; View XL Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.126 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 7 View XL
Mozilla/5.0 (Linux; Android 7.1.2; View Prime Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 7 View Prime
Mozilla/5.0 (Linux; Android 7.1.2; TA-1024 Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 7 5
Mozilla/5.0 (Linux; Android 7.1.2; TA-1021 Build/N2G47H; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/173.0.0.62.99;] Android 7 6