3 clean websites promoted by Gadget Blog to trade in your old used phone in US:

  • Glyde has cool feature = you can sell and buy used phone. Is like a market place. They running trade in and Auction business at the same time.
  • Whiz = nothing to shout about
  • uSell = The post says that this is 1 of the most recognizable, which mentions in the New York Times, Forbes NBC, ABC and CNET.Instead of Mark up the price to keep the customer, they can compare the price from different web site and allow customer to sell the used phone to another company from uSell website