OnePlus is now pushing a new update for the older gen of OnePlus smartphones the OnePlus 3 & OnePlus 3T. The OnePlus has started pushing the Oxygen OS 5.0.3 to both the devices from today.
As per the changelog, the Oxygen OS 5.0.3 brings the much awaited Face Unlock feature to both OnePlus 3 & OnePlus 3T smartphones. The new update also brings the latest May 2018 security update.
The update also adds the recently deleted section in the gallery app and adds larger files category under File manager app. As it is an OTA update it might take some time to hit on your device so be patient.