The update arrives as Open Beta 30 for the OnePlus 3 and 21 for the OnePlus 3T. In addition to Face Unlock, the update also includes for Airtel VoLTE in India, OnePlus Switch application for backup & restore, and several other changes.
Keep in mind that the Airtel VoLTE feature may not work in some areas. Plus, the update may not be compatible with some third-party camera apps. Head to the Source link below to access the complete change log.
Am I missing something here? I have this feature in oneplus 3t since December if I remember!!