If you use Copilot without signing in, you can't save your chat history. You'll start with a login screen on mobile devices. To change the voice model you selected or change the voice speed ...

The free version of Microsoft’s generative AI chatbot is available in a standalone app, in the Edge browser, and on the web.

This is where Microsoft 365 Chat comes into play. Co-pilot summarizing inbox Credit: Microsoft With Co-pilot underpinning it, you can ask it to give you a summary of any pressing updates for the day.