Sprint buyback Program determine with just a few simple steps if your Sprint PCS or Nextel phone is eligible for a Sprint account credit. If it is not, you can recycle your phone, battery and accessories with Sprint Project Connect. All you have to do is enter your account number, not your mobile phone number. At the website you can get more information about Sprint Buyback in the categories available. These categories are Eligible Phone Models, Buyback Support, and FAQ. Sprint Nextel is a comprehensive range of wireless and wireline communications services bringing the freedom of mobility to consumers, businesses and government users. Sprint Nextel is recognized for developing, engineering and deploying innovative technologies, including two robust wireless networks serving approximately 54 million customers. Sprint has thousands of locations to serve its customers. In order to find a store in your area go to the Find a Store section, and enter the information required.