When the frame is downloading photos and videos a download indicator will appear at the bottom of the screen. The download indicator has 3 modes.
A small mode which takes up minimal space:
A Medium mode, which just gives text status:
And a Large mode, which shows you the icons of photos/videos being downloaded, the progress and if any duplicates or errors occurred:
You may toggle between each mode by tapping on it.
In the Medium and Large modes, you will see a message stating "Downloading n of N items" whenever the frame is busy downloading photos or videos. This means it is downloading the nth item out of a total of N items. N represents the total number of items that can be downloaded at that time. N may grow as the frame discovers there are more items to download from the cloud.
In Large mode the download indicator will give you more detail. In the example below, the frame is downloading the 18th out of 18 items. The last item has already been downloaded and is has 50% of processing completed.
Note: When downloading is finished the message will display "Downloaded X of X items". The indicator will disappear on its own 5 mins after the downloading of the last item.
If you want to see the most recent items you downloaded you can go to the Recent Items playlist located in the Switch/Select Playlist screen.