OnePlus has issued an over the air update (OxygenOS 4.1.7) to the OnePlus 3 and 3T with the August security patch and some fixes and optimizations.
By request from Google the update will remove Hangouts from the core package in the case that it has never been updated so if you want to keep Hangouts on your OnePlus 3 or 3T you’d best update it on the Play Store prior to installing the update. Naturally you also get the chance to download it from the play store later on.
Here’s a full changelog:
Enhanced system fluidity
Android security patch updated to August
Sound channel error while recording videos
Call is routed to speaker accidently by some 3rd party apps
Screen is turned on by screen off gesture while making a phone call
Rendering issue in Indian Kannada language
App locker issue caused by some 3rd party apps
As requested by Google, Hangouts will be removed if you have never updated it on Play Store. To keep Hangouts, please update it prior to the upgrade.