Latest Facebook Lite 25 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; ALCATEL ONE TOUCH 7041D Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.2 Mobile Safari/534.30[FBAN/EMA;FBLC/pt_PT;FBAV/25.0.0.8.145;] Android 4 One Touch Pop C7 Dual SIM
Mozilla/5.0 (Linux; U; Android 4.1.2; en-us; GT-I9128V Build/JZO54K) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/en_US;FBAV/25.0.0.8.145;] Android 4 Galaxy Grand
Mozilla/5.0 (Linux; Android 6.0.1; VFD 600 Build/MMB29M; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36[FBAN/EMA;FBLC/pt_PT;FBAV/25.0.0.8.145;] Android 6 Smart Prime 7
Mozilla/5.0 (Linux; Android 6.0.1; Micromax AQ4502 Build/MOB30R; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.106 Mobile Safari/537.36[FBAN/EMA;FBLC/en_GB;FBAV/25.0.0.7.145;] Android 6 Canvas A1