We've added Full Screen mode to our API for video calls, allowing users to maximize the video call iframe and enjoy a richer experience on their devices. This feature is now available for all API customers, who can enable it by setting the `showFullscreenButton` configuration flag to true. The new UI design philosophy focuses on keeping the focus on the call experience, with the full screen UX appearing when hovering over the iframe. To implement Full Screen mode, developers simply need to sign up for a free account, embed a call into their product, and set the `showFullscreenButton` flag to true.