Hello! We appreciate your interest in our products. The device is indeed brand new. An unlocked smartphone is a phone that isn't tied to a specific carrier or contract. Therefore, you have the freedom to shop for the latest phones and plans as often — or as infrequently — as you like. Plus, they don't come preloaded with numerous carrier applications that take up space on your phone. And when it comes to international travel, unlocked phones can't be beaten. That being said, you will want to reach out to T-mobile and ensure the device is compatible with their network. We hope this answers your question and helps you with your purchase decision. ^Rod