So you found an iPhone and being the honest responsible adult you are you want to get it back to its owner, but the owner has (smartly) enabled the lock screen and you can’t get into it to find out who owns it. What to do?
Siri to the rescue!
She has a special Siri Trick. Hold down the home button until Siri asks what she can help you with, then say “who am I?” Siri will respond with something like what you see here, and if the owner’s contact record contains a phone number or email address, voila!