Latest Facebook 88 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 7.1.1; de-at; SAMSUNG SM-G960XU Build/NST78S;) AppleWebKit/271.07 (KHTML, like Gecko) Version/49 Mobile Safari/271.07 [FB_IAB/FB4A;FBAV/88.4.3.49.66;] Android 7 Galaxy S9
Mozilla/5.0 (Linux; U; Android 4.3; es-us; SM-G350M Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 Galaxy Core Plus
Mozilla/5.0 (Linux; U; Android 4.3; en-us; ZTE-Z777 Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 Z777
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/88.0.0.22.76;] Android 4 Z669
Mozilla/5.0 (Linux; U; Android 4.3; en-us; SM-G3518 Build/JLS36C) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 Galaxy Core LTE
Mozilla/5.0 (Linux; U; Android 4.3; en-us; MT2L03 Build/HuaweiMT2L03LITE) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 Ascend Mate 2
Mozilla/5.0 (Linux; U; Android 4.1.2; es-us; LG-LG730 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 730
Mozilla/5.0 (Linux; U; Android 4.1.2; es-mx; LG-E976 Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 Optimus G
Mozilla/5.0 (Linux; U; Android 4.1.2; es-mx; LG-E425f Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 E425f
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/88.0.0.22.76;] Android 4 Z995
Mozilla/5.0 (Linux; U; Android 4.1.2; en-ca; LG-E410B Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 Optimus L1 II
Mozilla/5.0 (Linux; U; Android 4.1.2; en-ca; GT-I9100M Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 Galaxy S II
Mozilla/5.0 (Linux; U; Android 4.1.2; en-au; LG-P655K Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 4 P655K
Mozilla/5.0 (Linux; Android 6.0; Micromax Q350 Build/MRA58K; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/63.0.3239.111 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 6 Canvas Spark 2 Plus
Mozilla/5.0 (Linux; Android 5.1; VF-696 Build/LMY47I; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/53.0.2785.124 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 5 Smart Grand 6
Mozilla/5.0 (Linux; Android 5.1; SELFIX_Q5_URBAN Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 5 Q5 Urban
Mozilla/5.0 (Linux; Android 5.1; SELFIX_Q3_REBEL Build/LMY47I) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/39.0.0.0 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 5 Q3 Rebel
Mozilla/5.0 (Linux; Android 5.1; NOS FIVE Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.81 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 5 Five
Mozilla/5.0 (Linux; Android 5.1.1; SM-G531F Build/LMY48B; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.81 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 5 Galaxy Grand Prime
Mozilla/5.0 (Linux; Android 5.0; SM-N900V Build/LRX21V; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/52.0.2743.98 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/88.0.0.22.76;] Android 5 Galaxy Note 3