Oppo has started rolling out the Android 10-based ColorOS 7 software update to all Oppo F15 and Oppo A91 smartphones. The update will bring features like Dark Mode, redesigned UI and optimised camera to the smartphone.

source https://gadgets.ndtv.com/mobiles/news/oppo-coloros-7-update-rollout-f15-a91-android-10-india-2269452#rss-gadgets-all