The Samsung Galaxy Z Flip runs on Samsung's One UI 2.0, which is based on Android 10. One UI 2.0 offers a user-friendly interface with intuitive navigation and a clean design. It comes with various customization options, allowing users to personalize their phone according to their preferences. The software also includes useful features and optimizations that enhance the overall user experience. One UI 2.0 is designed to make the most out of the foldable display, providing a seamless and intuitive user interface when switching between folded and unfolded modes. With its user-friendly software, the Samsung Galaxy Z Flip offers a smooth and enjoyable user experience.