OxygenOS is a custom operating system developed by OnePlus for its smartphones. Based on Android, it offers a clean and user-friendly interface, providing a smooth experience with minimal bloatware. OxygenOS is known for its speed and efficiency, allowing users to customize their devices easily. The operating system includes various features such as Dark Mode, Zen Mode, and enhanced gaming options. Regular updates ensure that users receive the latest security patches and improvements. OxygenOS aims to deliver a balance between performance and personalization, catering to the needs of its diverse user base.