I1589258610770 , via OnePlus Community App , Jan 18, 2022 : 9RT isn't a OnePlus device I am using it but it's much like Oopo phone without OnePlus feature, disappointed OnePlus ☹️
Aaron2017 , Jan 18, 2022 : It resembles more to Oppo's ColorOS now yes, but the merge of the codebases of OxygenOS and ColorOS has been announced quite a while ago though https://forums.oneplus.com/threads/...se-and-software-maintenance-schedule.1462181/
mp3399 , via OnePlus Community App , Jan 19, 2022 : Hey, there's only two varient Oxygen os (india) & color os (china) if you wanna install oxygen then just wait for a while as it's just got launch in india so I'll take some time to start development of that device