Each devices on our website is completely Brand New and Unlocked. They are not restricted to any network, and will work with every GSM network within the USA, and almost every GSM network across the world. If you have any questions concerning a particular international GSM network, please feel free to contact our helpful customer service. We will respond as soon as possible. We stand behind our products, and all of the devices our covered by our Mr Aberthon 14 Day Warranty.