The OxygenOS is based on the Android 5.0.2 Lollipop OS and OnePlus claims that it is light and has subtle features. Some of the common features include Gestures which includes double tapping to wake up the phone, music controls, shortcuts for camera and flashlight.
Customization features includes customizing the wallpapers, ability to switch between hardware and software navigation and so on; Quick Settings lets you rearrange tiles in the notification tray and so on.
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