How to trace exact location of iPhone?

So I was at khols earlier, my little brother put his iphone down, and some piece of *** kid took it and went off. I never set up anything like iCloud or anything like that on the phone (and I obviously can't now so don't give me any BS app where you need to send invites for it to work).So basically I'm asking for a website that can trace the EXACT location of a cellphone number, preferably for free. Please help quickly so I can find this ***. Thanks.

The findmyiphone app can be downloaded on any apple device and can be used to track other devices, so long as you had an apple id.