[Johnno]

For some clarity regarding phone photos, as an example my Nokia Lumia 1520 Windows phone has several settings for photos and I would assume (yup I'll risk it) other brands of phones would have similar settings, if I used the default image settings which are in HD with photos hitting 9Mb in size, not only this the default settings were actually takingg two photos of everything, one in HD and the other in low/space saving mode, easily under half that of the HD photos... when I saw this years ago I dialled back the image quality with various photos in the range from 2.5Mb up to 4.73Mb.

I would suggest folks go into their phone settings, camera and photos and have a squiz at what tweaks are available and have play, perhaps starting from the lowest quality and size and work your way through. You can save considerable room on the phone storage and the cloud also. With newer cameras and lenses available our photos will continue to grow in size and quality such as 4k and now 8k...