How do I deactivate a used sprint iPhone 4s
Hello,
I have a pawn shop that called me and asked me if there's anyway to deactive a used iPhone 4s so they can resell. The Pawn shop is required to hold all products for at least 15 days for police to evaluate and see if it's been reported stolen. They've gone through this process and have tried contacting the seller to deactivate his account (which he apparently forgot to or didn't know he had to). Is there any way I can clear phone to be used as a fresh new device?
Any help would be appreciated. Thanks,
Caleb
iPhone 4S, iOS 5.0.1, AT&T