TerraNova: Only apart from Chrome and Kiwi, it is possible to display YouTube's highest quality on mobile devices. However, Chrome does not support extensions on Android. Firefox is fast, but can it really display YouTube's highest quality? In order to achieve this, it is necessary to refine the user experience and develop methods for optimizing the video streaming process. A well-designed Firefox plugin could possibly solve this problem, allowing users to enjoy their favorite YouTube videos at the highest quality, even on mobile devices.