Move an Image from One Collection to Another?

In Grid view, tap-and-hold on the image you want to move and a pop-up menu will appear. Tap on Move To (shown marked in red in the inset above), and you get a screen showing thumbnails for all your collections (well, all your collections except for the one your photo is currently in, of course). Just tap on the collection where you want your image to move to, then tap on the checkmark icon in the top right of the screen, and off it goes. Notice that there’s also an empty collection thumbnail in the top-left corner (the one with the plus sign), in case the place you want to move your image to is an entirely new collection. Also, if you want to keep the image in the same collection it’s currently in, and instead just make a copy and put that in a different collection, then you’d choose Copy To from that menu (instead of Move To).