From this service, you can place an order for any HTC phone, may be locked to any country of any network. This service is connected to the HTC database, means once you will place your order, unlock code will be automatically delivered to your email according to the IMEI.
We only need 15-digit correct IMEI to provide the correct network unlock code of HTC phones. Once paid and the code will be not found in the first database, then I will check with the 2nd and 3rd database.
Newest HTC models from MetroPCS USA or T-Mobile USA does not ask for Network Unlock code. They use a “Device Unlock app” and cannot be unlocked by code. As said above unlock code is available for all HTC phones by IMEI, but if you will not found a place to enter the code on your phone, then the code will be useless for you.