Unlock your HTC Vivid Phone Network by Code. Just select your HTC Vivid original network and go to the corresponding unlocking page to unlock your phone. If you already know the procedure, just select the details and make an order. It is easy and fast. Everything is automatic, it will automatically go to the server, and the code will be delivered by email.
Once the HTC Vivid is unlocked, you can use the default as well as another network provider sim card too.