Huawei EMUI is a custom user interface developed by Huawei for its smartphones and tablets. Based on the Android operating system, EMUI enhances the user experience with features like customizable themes, improved multitasking, and various performance optimizations. The interface is designed to be user-friendly, offering intuitive navigation and a range of built-in applications. EMUI also includes security features and regular updates to ensure device performance and safety, making it a popular choice among Huawei device users.