Here’s something we’ve all experienced many times: for some inscrutable reason, you cannot carry out an operation you thought would be easy. Here’s a good example:
I had a photo on my iPhone that I wanted to transfer to my Mac. I’ve done this hundreds of times before. All you do is open the Photos app on the iPhone, press the micro-icon signifying a file transfer, select the photo you want transferred, press the AirDrop icon, then press the icon representing the device you wish to send the photo to. As I said, I’ve done this hundreds of times.
But for some reason, today it didn’t work. I was able to establish that the problem was with the Mac, not the iPhone. So, I went to the obvious place: Sharing in the System Preferences app:
The “File Sharing” option is for somebody to access the files on my computer. It seems that there’s nothing here that specifies who can send photos to my Mac.