The service for full unlock all iPhonemodels from the regional lock on to United States! If you ordered a check by IMEI and this test showed regional lock on the US: "USA GSM Default Policy", you can order this service. Line USA GSM in your result means that this phone can be used with SIM cards of any operator, but only in the US. To solve this problem, and the phone with the lock began to work in networks of any other country - order the service. After unlocking the phone can be upgraded to any version of the OS.
The main requirement - in your test result by IMEI must be a string: Next Tether Activation Policy Description: USA GSM Default Policy.
IMPORTANT:Any other information in the line "Next Tether Activation Policy Description" means that the service can not be ordered.