Slideshow Full screen view is not available immediately on iOS devices. It requires the system to generate a video file, and this may take from a few minutes up to an hour. Shorter slideshows will take less time to generate.

When you first make your slideshow visible, and at any time you make a change in the slideshow, this video file should be generated. In this case, the full screen on iPhone devices will be available after the file is finished being prepared. During preparation, iPhone users will not be able to access full screen mode.