I am selling my white iPhone4, 32G. It is in perfect working condition. Originally from AT&T, but it is unlocked for GSM. Thus, it can work on sim card of any carriers.
There are some scratches on the corners of the phone, but the screen and back are in perfectly workable condition. Please refer to the photos for details.
I could give you the case I bought for it, which is also in the picture. The phone looks perfect in the case. It also comes with the usb cable.