The Pictures I Took With My iPhone Won't Open!

The other day a student came to me with this problem. 

He couldn't open pictures he took on his iPhone on his Mac.

I was puzzled and took the following steps.

1. I looked to see what the image type was. You can by looking a the end of the file name (photo.jpg). 

2. In this case, there were no file extensions, so I right-clicked and chose Get Info. 

3. The file I was looking at was called HEIC. I had never seen that before so I went to the phone that took the photo.

4. I went into the phone settings to see what was going on by going Settings > Camera > Formats

5. From there I switched the photo format to most compatible.