Open a picture file with the Gallery app or choosing a picture in My Files.
Tap on the picture.
A bottom menu bar will appear.
There is a Play icon, this will start a slide show with a nice little zoom animation. I don't know if you can turn the zoom off or change the timer. The slide show will only show the pictures from the same folder selected.
There is also a Share, Delete, Rotate, and Crop option on the bottom menu bar.
edit: I am also able to just swipe through the pictures. I don't see a Done button at all. Are you by any chance using a different picture viewing app or have the most recent HD update?
I was going to Library/My Files and tapping on a photo file. (Icon. No thumbnail).
Now that I've used the Gallery App once it seems to now default to that. So all is well.
Very helpful. Thanks. Although it doesn't work for pictures saved on an SD, correct?