How to Copy a Frame in Sigma Mobile for Vibe-coding on Phone?

I'm using a chat agent to prototype my designs. But currently in Figma mobile app, it only allow me to view and comment on my canvas. I cannot select the frame and share the frame link to my chat agent as a reference for vibe coding. The workaround of request desktop app from Browser crashes all the time. Please enable the feature to be compatible with the recent AI trends.