Tuaw: When the iPhone 4 becomes available later this week, many folks will find themselves with two iPhones: one shiny and new, the other slightly less so. Those not donating the past edition to a relative or friend might want to sell it. Here's what you can do to successfully and painlessly sell your "old" iPhone.
Hmm I should buy a 3GS and put ios4 on it and have fun with trying to brick it
:D.