I am an oppo user and I am so amazed by using colour os 12 , recently I shifted from oppo to iqoo because iqoo is performing best in market, they providing best performing devices but their software experience is feeling like needs so many improvement and some of the features are missing like on-screen translate and youtube background running, and ui design, font design need to be improved and refreshing but iqoo is making improvements, hope they will bring more and more best improvements in future.