The Photo backup screen

Me, Settings, Backup, then the button that carries your backend's name. The screen reads top to bottom: what is happening, what is there, what you can do.

• While a run is on: the phase, Connecting to the backend, Reading what the backend holds, Bringing photos from the backend or Backing up, with a bar and N of M.
• After a run: Done, Stopped, Waiting for battery, Waiting for Wi-Fi or Failed with the reason, then the counts: how many were backed up, how many brought back, how many failed, and when it finished.
• A notification shows the same progress while a run is on, so Android does not stop a long upload half way.
• Back up now starts a run; Stop ends the running one and holds everything until you press a button here again.

• The kind and name, the host or bucket, and the Backup quality in force.
• Photos in the backend and Size in the backend: what your storage holds for this index, as the lists in it say. Photos, videos and PDF pages are all counted.
• Photos on this phone and Size on this phone: the files in your synced folders plus the 720p copies, next to the backend's numbers, so you see how much the backend holds that the phone does not.
• Waiting to be backed up: indexed files on this phone that the backend does not have yet.
• Only in the backend: photos this phone has only as 720p copies. When it is more than zero, a note says how many and how big their full files are. See photos only in the backend.