Designing a threaded view for mobile requires careful consideration, especially for smaller screens. Prioritize simplicity and clarity. Utilize clear visual cues, such as indentation or lines, to indicate the hierarchy of comments. Ensure that users can easily identify parent comments and their corresponding replies.

Limit the depth of threads to 2 or 3 levels for better mobile usability. If users need to explore further, offer an option to open the thread in a new window, maintaining a seamless browsing experience. Additionally, consider implementing collapsible threads to help users manage and navigate through longer discussions. This way, they can expand threads of interest while keeping the interface tidy.