I've been getting some reports of some students turning in photos that Canvas (or teachers) can't open. I am assuming they are HEIC photos from certain models of phones...
My video shows users how to change that setting on an iPhone. I do not know about 'droids.
I watched that video this AM and boy do I sound tired! Sorry but the content is still good.
If you are wanting to OPEN their photos this is a good website to use to convert them.
Personally I would force THEM to do the work by allowing only .jpg (or .pdf) on your uploads in Canvas.
Oh, and I recorded this using the Loom App on my iPhone. Those instructions are here.