new unopened iphone 4 8gb black on t mobile ?

this is a unwanted upgrade never opened Technical Details:will not ship or post Black, 8GB internal storage 3G, Wi-Fi 802.11 b/g/n WiFi and Bluetooth connectivity Video calling with FaceTime Retina display with 960x640 resolution HD video recording 5-megapixel camera with LED flash Dual-mic noise suppression Scratch-resistant glass back panel iCloud cloud service Twitter integration Digital compass Google Maps TV-out