Let my iPhone4 go.

The first month when I came here, I bought an iPhone4 at T-mobile. About one month later, a disaster came. My iPhone was automatically updated and then my T-mobile sm card became invalid. I came to T-mobile and they promised me to exchange it for a unlocked iPhone4 if I payed 150 more dollars. Then about half a year passed, I haven't received the new one. Every time I called T-mobile, they only asked me to wait and wait. Until recently, they told me that the guy taking care of my stuff had quitted. And he even left with my iPhone which I asked him to exchange. So I didn't receive the new one and definitely lost the old one. Fortunately, last month, finally, the guy who takes charge of that T-mobile store made a lot effort to give me a new locked one and payed my 150 dollars back.

Since it was still a locked iPhone, which was not for my T-mobile sm card, it means nothing to me. Then guess what! I traded it in at Amazon.com, and got 270 dollars, which was about third time as what I payed for it!