Hi again.
I guess I am not sure how the iCloud photo library is supposed to work. I thought that using it was supposed to free up space on a device. It seems kind of a paradox that we can't use iCloud photo library to free up space until we free up space!
So...I have told the owner of the phone that he will have to delete some photos in order for this to work. I was unable to give him a sensible explanation for why.
His photos take up 7.9 Gb on the phone right now. So if he deletes enough to get 500 Mb of storage space on his phone and his photo library gets uploaded, what then? Will he have a whole bunch of free space on his phone (it is set to keep lower resolutions of the photos on the phone in order to save space) and continue to upload subsequent additions to the photo library?
He's taken more pictures and now has less than 100 Mb available on the phone.
I thought that once you enabled iCloud photo library, the actual photos wouldn't be physically on the phone anymore, and you would only be able to see them if you had access to iCloud via wifi or cellular. I guess that is not the way it works, correct? They are all still physically on the phone AND in the cloud as well? And if you activate the feature to 'optimize space', it just keeps lower resolution copies of the photos on the phone?
If this is the case, then there really is no point in the owner of this particular phone using this feature, as he only has one device anyway.
I am asking this and I am thoroughly confused about this because of an incident with another owner of an iPhone 6. His Windows computer was unable to 'see' his phone when connected via USB. He also was nearly out of storage space and he wanted to copy his photo library to his Windows PC. We tried everything to get his computer to see the phone, and nothing worked. So we decided to do this with my computer, and I would move his photos to a flash drive to give to him. In the meantime, he turned on iCloud photo library, unbeknown to me. So I connected his iPhone to my Windows PC, it found the iPhone as a storage device, I went to copy the photos to my computer and lo and behold, only 3 photos were found on his phone. Yet when he used his phone to look at his photos, he could see them all. My computer could only see 3 because that was all that were physically on the phone. This is how I got the impression that once the photos were 'uploaded' to iCloud, they would no longer physically be on that phone, taking up mega-gigs of storage.