Latest Facebook 70 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.3; en-us; ZTE-Z669 Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Z669
Mozilla/5.0 (Linux; U; Android 4.1.2; pt-br; LG-E455f Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 E455f
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; ZTE-Z995 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.21.83;] Android 4 Z995
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; SCH-I200PP Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.21.83;] Android 4 Galaxy Stellar
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; HUAWEI G730-C00 Build/HuaweiG730-C00) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Ascend G730
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; HTC One VX Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 One VX
Mozilla/5.0 (Linux; U; Android 4.1.2; en-au; HTC_0P6A1 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 0P6A1
Mozilla/5.0 (Linux; U; Android 4.1.2; en-au; GT-I8730T Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Galaxy Express
Mozilla/5.0 (Linux; U; Android 4.1.1; en-us; ZTE-Z993 Build/JRO03C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Z993
Mozilla/5.0 (Linux; U; Android 4.0.4; en-us; LG-LS860 Build/IMM76I) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 LS860
Mozilla/5.0 (Linux; U; Android 4.0.3; en-ca; HTC-Z710a Build/IML74K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Z710a
Mozilla/5.0 (Linux; Android 6.0.1; HTC 2PST5 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/49.0.2623.105 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 6 2PST5
Mozilla/5.0 (Linux; Android 5.0.2; VF-895N Build/LRX22G; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/64.0.3282.137 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 5 Smart Prime 6
Mozilla/5.0 (Linux; Android 4.4.4; Y635-L02 Build/HuaweiY635-L02) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Y635
Mozilla/5.0 (Linux; Android 4.4.4; SM-E500YZ Build/KTU84P) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/33.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Galaxy E5
Mozilla/5.0 (Linux; Android 4.4.2; SM-G357M Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Galaxy Ace Style
Mozilla/5.0 (Linux; Android 4.4.2; GT-I9190 Build/KOT49H) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/30.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/70.0.0.22.83;] Android 4 Galaxy S4 mini