After unlcoking device will be usebale in the USA and out side. But if device is blacklisted/lost/stolen it will not be working in the USA but will be working outside. Use Premium Slow Unlock Sprint service if need to use in the USA.
Delivery time is average. No cancellation in case of overdue.
No refund for wrong network/junk IMEI.
No refund for IMEIs submitted after iPhone Worldwide unlock service.