What does this circle S mean on far screen

Hello, darrel196!

Thanks for reaching out to the Apple Support Communities! That's a great question you have about the circle with the letter "S" you are seeing. What you're looking at is a generic icon in place of a contacts photo if you don't have one added. You can check out this article to Edit contacts on iPhone for information about how you can change the contact icon to a photo.

Thanks again for the question and have a great day!