This service will unlock all iPhone from Verizon that are only locked for International (but still work on all domestic network in the USA)
To check if you have one of those unit, you need to order a complete iPhone GSX Check report... it's mandatory !!!!!
If the report show "Next Tether: US GSM/VZW Service" and "Replacement Detail Available For This IMEI" or "This IMEI has replacement information" then you can order.
There is no Refund if you place an order on this service without checking first with iPhone GSX Check if it's supported !