The two 2016-released handsets are being treated as we speak to an incremental roll-out of OxygenOS 5.0.4. That’s obviously a few versions behind the software currently powering the OnePlus 5, 5T, and 6, and it’s still based on Android 8.0 Oreo.
Updated Android security patch to 2018.7
Improved image quality for the front camera
Fixed manual ISO setting issue of 3rd party camera apps
Fixed parallel WhatsApp crash issue
Fixed front camera zoom-in issues for Snapchat
In addition to a couple of relatively minor camera improvements, and small bug fixes for two popular third-party apps, the latest update bumps up the Android security patch to the July level. Due to a typo, yes, a typo, your settings will be stuck showing June 1 under security patch level, but rest assured, you are indeed protected against the latest threats.
Like all staggered rollouts, it might take a few days for all users to receive the alert encouraging you to update. So far, no critical bugs have been reported, so it’s undoubtedly safe to install this minor OxygenOS 5.0.4 goodie pack. Also, in case you’re (furiously) wondering, other updates are definitely in the pipeline for the OnePlus 3 and 3T. Can you say Android 8.1?