Latest Facebook Lite 50 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; C2105 Build/15.3.A.1.14) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 Mobile Safari/534.30[FBAN/EMA;FBLC/pt_PT;FBAV/50.0.0.3.82;] Android 4 Xperia L
Mozilla/5.0 (Linux; U; Android 4.2.2; pt-pt; ALCATEL ONE TOUCH 7041X Build/JDQ39) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.2 Mobile Safari/534.30 SVN/070FPG1[FBAN/EMA;FBLC/pt_PT;FBAV/50.0.0.3.82;] Android 4 One Touch Pop C7
Mozilla/5.0 (Linux; Android 9; Hisense U963 Build/PPR1.180610.011; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/78.0.3904.96 Mobile Safari/537.36[FBAN/EMA;FBLC/en_US;FBAV/50.0.0.3.82;] Android 9 U963
Mozilla/5.0 (Linux; Android 5.1; PHQ520 Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/46.0.2490.76 Mobile Safari/537.36[FBAN/EMA;FBLC/fr_FR;FBAV/50.0.0.3.82;] Android 5 Griffe G5