The OnePlus 7 got OxygenOS 9.5.4 update last week with DC Dimming, Fnatic Mode, and April 2019 security patch. OnePlus is rolling out another update for the phone OxygenOS 9.5.5.
The new build weighs 125MB in size and brings in improvements to the camera and the Nightscape Mode. It also bumps up the security patch level to May 1, 2019.
This update will be released for a limited number of users initially, with a wider rollout commencing in a few days if all goes smoothly. You can check for it manually by heading to your phone’s Settings > System > System updates menu.