To see the metadata for an iPhone image that you have pulled onto your computer:
On a Mac:
open the image
click Tools > Show Inspector
On Windows:
right-click the file
select Properties > Details
Try it out! : Online photo
Try it out! Click the image to see this photo, from a free stock photo site. Try downloading the photo on to your computer (you can delete it later) and finding the metadata, or try looking for the metadata on a photo that you already have.