I don't know how picky the carrier is when it comes to visible surface scratches, I know Apple checks and looks at everything, they even perform diagnostic testing
carrier 'offers' (where they provide bill credits over many months for some $ rather higher than the actual trade-in value) - in an Apple Store - doesn't matter so long as value isn't zero.
carrier 'offers' (where they provide bill credits over many months for some $ rather higher than the actual trade-in value) - in an Apple Store - doesn't matter so long as value isn't zero.