Latest Facebook Lite 506 user agents:

User Agent Platform Device
Mozilla/5.0 (Linux; Android 16; SM-A156E Build/BP2A.250605.031.A3; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/147.0.7727.55 Mobile Safari/537.36[FBAN/EMA;FBLC/id_ID;FBAV/506.0.0.0.35;FBCX/modulariab;] Android 16 Galaxy A15 5G