Latest Facebook 172 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/67.0.3396.87 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 5
Mozilla/5.0 (Linux; Android 8.1.0; Plume L1 Plus Build/O11019; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Plume L1 Plus
Mozilla/5.0 (Linux; Android 8.1.0; ONE A2003 Build/OPM2.171019.029; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.117 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.12.93;] Android 8 2
Mozilla/5.0 (Linux; Android 8.1.0; Nexus 6P Build/OPM2.171019.029.A1; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Nexus 6P
Mozilla/5.0 (Linux; Android 8.1.0; EML-L09 Build/HUAWEIEML-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 P20
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/172.0.0.66.93;] Android 8 Aquaris X Pro
Mozilla/5.0 (Linux; Android 8.0.0; VTR-L09 Build/HUAWEIVTR-L09; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.31.93;] Android 8 P10
Mozilla/5.0 (Linux; Android 8.0.0; SM-G960F 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/172.0.0.66.93;] Android 8 Galaxy S9
Mozilla/5.0 (Linux; Android 8.0.0; SM-A320FL Build/R16NW; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Galaxy A3 (2017)
Mozilla/5.0 (Linux; Android 8.0.0; MIX 2S Build/OPR1.170623.032; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Mi Mix 2S
Mozilla/5.0 (Linux; Android 8.0.0; Mi MIX 2 Build/OPR1.170623.027; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Mi Mix 2
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/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.31.93;] Android 8 Mi A1
Mozilla/5.0 (Linux; Android 8.0.0; MHA-AL00 Build/HUAWEIMHA-AL00; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Mate 9
Mozilla/5.0 (Linux; Android 8.0.0; HTC U11 life Build/OPR6.170623.013; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 U11 Life
Mozilla/5.0 (Linux; Android 8.0.0; HTC U Ultra Build/OPR1.170623.032; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 U Ultra
Mozilla/5.0 (Linux; Android 8.0.0; HTC U Ultra 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/172.0.0.66.93;] Android 8 U Ultra
Mozilla/5.0 (Linux; Android 8.0.0; G8141 Build/47.1.A.12.179; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Xperia XZ Premium
Mozilla/5.0 (Linux; Android 8.0.0; G8141 Build/47.1.A.12.145; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 Xperia XZ Premium
Mozilla/5.0 (Linux; Android 8.0.0; F5321 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/172.0.0.66.93;] Android 8 Xperia X Compact
Mozilla/5.0 (Linux; Android 8.0.0; CUBOT_X18_Plus Build/O00623; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/66.0.3359.158 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/172.0.0.66.93;] Android 8 X18 Plus