After unlocking your HTC 7 Mozart, you will be able to use the phone on any network worldwide without any restrictions. So you will be free from those expensive contracts and if you are in another country you can use a local sim card and save on roaming charges.
Please check the correct tool by using the IMEI widget provided below and then proceed with the order.
Press *#06# to get your IMEI number.
Enter an IMEI and find whether an HTC tool is available for your phone !
Instructions
Download our software from here and follow the instructions given in the software. Alternatively you can find the instructions on this page.