korea iphone4s using in us?

[eunho]

My little brother just made a trip from korea and he brought an iphone 4s from there.(he found it from taxi while hes on the way to airport)
I did try to find the owner but my brother restore everything in there
Is there anyway i can find the owner,?
If i cant is there anyway to use it in the state?

 

[Alli]

If he's already restored it as new, there won't be any way to find the owner. It may be possible to use it in the US.