The HTC Desire HD is a larger successor to the HTC Desire. The Desire HD has a 4.3 inch super LCD touch screen and it ships running Android 2.2 with the HTC Sense user interface on top. Unlocking isn't important for just calls and text messages, but also for email and internet access supported by the phone's HSDPA data connection. Like all HTC Android phones, it's very easy to unlock with just a single unlock code, freeing it up for use on a network of your choice.
In the emails that we send out for HTC orders, we only need to send 1 unlock code. This code is the one that is unique for the IMEI that your supplied and will work on nearly all networks. This is an extremely simple process and one that HTC have deliberately worked on. We also provide the instructions to enter the code for each HTC mobile phone, so you'll know exactly what to do.