Latest Facebook 186 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 8.1.0; Redmi Note 5 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Redmi Note 5
Mozilla/5.0 (Linux; Android 8.1.0; ONEPLUS A6003 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 6
Mozilla/5.0 (Linux; Android 8.1.0; ONEPLUS A6000 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 6
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/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 5T
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/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.39.81;] Android 8 5T
Mozilla/5.0 (Linux; Android 8.1.0; ONEPLUS A5000 Build/OPM1.171019.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 5
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/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 7 plus
Mozilla/5.0 (Linux; Android 8.1.0; Mi A2 Lite Build/OPM1.171019.019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Mi A2 Lite
Mozilla/5.0 (Linux; Android 8.1.0; Mi A1 Build/OPM1.171019.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Mi A1
Mozilla/5.0 (Linux; Android 8.1.0; COL-L29 Build/HUAWEICOL-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Honor 10
Mozilla/5.0 (Linux; Android 8.1.0; CLT-L29 Build/HUAWEICLT-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 P20 Pro
Mozilla/5.0 (Linux; Android 8.1.0; CLT-L09 Build/HUAWEICLT-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 P20 Pro
Mozilla/5.0 (Linux; Android 8.0.0; W_C860 Build/OPR1.170623.032; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 View 2 Pro
Mozilla/5.0 (Linux; Android 8.0.0; WAS-LX1A Build/HUAWEIWAS-LX1A; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 P10 Lite
Mozilla/5.0 (Linux; Android 8.0.0; VTR-L29 Build/HUAWEIVTR-L29; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 P10
Mozilla/5.0 (Linux; Android 8.0.0; TA-1033 Build/OPR1.170623.026; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 6
Mozilla/5.0 (Linux; Android 8.0.0; SM-N950F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Galaxy Note 8
Mozilla/5.0 (Linux; Android 8.0.0; SM-G960F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/91.0.4472.101 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Galaxy S9
Mozilla/5.0 (Linux; Android 8.0.0; SM-G960F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.91 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Galaxy S9
Mozilla/5.0 (Linux; Android 8.0.0; SM-G960F Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/68.0.3440.85 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/186.0.0.48.81;] Android 8 Galaxy S9