I'm used to the Palm Treo 700p, running Palm OS. On Palm OS, the system clipboard can hold only text.
I now also own a Samsung Galaxy S Relay, running Android "Jelly Bean" 4.1.2. This is a phone rather similar to the Samsung Galaxy S III, but with a slide-out physical keyboard included.
I take screenshots in the usual way it's done on a Galaxy S Relay. I hold the Power + Home keys at the same time for a few seconds until I see a white border around the edge of the screen. (Not for too long. I don't want my phone to suddenly power off without saving anything to disk.)
Like a Galaxy S III, my phone then saves a screenshot to a "Screenshots" photo album.
Like a Galaxy S III, my phone shows a notification labeled "Screenshot captured". I can expand the notification using two fingers to see a preview of the top few centimeters of the screenshot, and then can tap "Delete" or "Share".
And, like a Galaxy S III, my phone displays a pop-up "toast" message at the bottom of the screen which says
Copied to clipboard.
Hold on. What? The screenshot was copied to the clipboard?
Can the clipboard, in any version of Android, hold images?